CZ20001417A3 - Skin or hair cleaning or conditioning article exhibiting improved delivery of aroma - Google Patents

Abstract

The present solution relates to thoroughly dry personal Cleaning Product One Use Suitable for Cleaning, so for skin / hair conditioning, and providing improved fragrance delivery. these products are used by consumers after moistening the dry product with water. The product contains a substrate water insoluble, foaming surfactant a fragrance-releasing complex. The products according to the invention further with preferably containing a conditioning component, the use of the substrate improves foaming of low surfactant levels increases cleaning and peeling, optimizes delivery and deposition of conditioning agents and provides desirable texture, thickness and volume properties. As a result of this solution it provides efficient cleaning using low and therefore less irritant, surfactant levels meanwhile provides better benefits of treatment with a substrate having required properties. The solution also includes products that they further comprise a coating agent for coating the complex releasing odor. The solution also includes products containing various active ingredients supplied to the skin or hair. The solution also includes methods of making these products.

Description

A cleansing and conditioning product for the skin or hair having improved odor delivery

Technical field:

The present invention relates to a thoroughly dry, disposable personal cleansing product suitable for both cleansing and conditioning the skin / hair, and providing improved fragrance delivery. These products are used by the consumer after wetting the dry product with water. The article comprises a water-insoluble substrate, a foaming surfactant, and a fragrance-releasing complex. The products of the present invention preferably further comprise a conditioning component.

BACKGROUND OF THE INVENTION:

The present invention relates to personal cleansing and conditioning products for the skin or hair having improved fragrance delivery. Fragrances, such as perfumes, are desirable components of personal cleansing products for two reasons: they mask unpleasant body odors and provide olfactory aesthetic benefits. Fragrances are also used in personal cleaners as a signal that the product is effective (eg, the skin is clean and fresh).

Traditionally, personal cleaners are sold in various forms, such as soaps, creams, solutions and gels. In order to be acceptable to consumers, these cleaning formulations attempt to satisfy a number of criteria. These criteria include cleansing effectiveness, skin feel, softness to the skin, hair and eye mucosa, and amount of foam. Ideal personal cleansers should gently cleanse the skin or hair, cause little or no irritation, and should not leave the skin or hair too dry when used frequently. However, these traditional forms of personal cleansing products have the basic problem of balancing cleaning performance against the benefits of treatment. While one solution to this problem is to use separately cleansing and conditioning products, this is not always appropriate or practical and many consumers would prefer to use a single product that is able to both cleanse and condition the skin or hair.

The conditioning ingredients are difficult to formulate in a typical cleaning composition because few conditioners are compatible with surfactants, resulting in an undesirable inhomogeneous composition. In order to obtain a homogeneous mixture with the conditioning ingredients and to prevent the loss of conditioning ingredients prior to deposition, additional ingredients such as emulsifiers, thickeners and gelling agents are often added to suspend the conditioning ingredients in the surfactant mixture. This results in an aesthetically pleasing homogeneous mixture, but often also poor deposition of conditioning ingredients, as conditioners are emulsified and are not effectively released during cleaning. Many conditioning ingredients also have the disadvantage of suppressing the formation of foam. Suppression of foaming is a problem because many consumers want cleaning products that provide rich, soft and plentiful foam.

Thus, it is apparent that conventional cleaning products that attempt to combine surfactants and conditioning agents suffer from disadvantages inherent in the incompatibility of surfactants and conditioners. One expedient solution is a product that provides efficient cleaning and consistent treatment in a convenient, inexpensive, and hygienic personal disposable cleaning product having beneficial washcloth properties. These products provide the advantage that there is no need to use a separate cleaning product and conditioner. These products are also very convenient because they are in the form of a thoroughly dry product which is moistened prior to use, eliminating the need to carry bulky bottles, pieces, containers, tubes and other forms of cleaning and conditioning products. Disposable products are also a more hygienic alternative to the use of sponges, washcloths or other cleaners for multiple reuse, as such tools produce bacterial growth, unpleasant odors and other unwanted properties associated with reuse.

Fragrances, such as perfumes, can be directly added to the disposable products described above. However, when perfumes are added as pure oil to or soaked in a thoroughly dry product, there are several disadvantages. One problem is that some perfume ingredients are not stable and thus are susceptible to destruction and / or loss. They may also undergo oxidative or other chemical reactions (eg through oxygen, light, heat, etc.), causing undesirable discoloration of products containing these perfume ingredients.

Another disadvantage arising from the direct addition of perfumes to thoroughly dry cleaning products is that the perfume ingredients are generally volatile and thus easily escape from the product during manufacture or storage. Particularly high is the loss of highly volatile perfume fractions. As a result, in the past, personal cleansing products have tended to use perfumes consisting mainly of less volatile, higher boiling (higher boiling) perfume ingredients to maximize odor balance during product manufacturing and storage, thereby providing better benefits in use and after use. use. However, this was not a very appropriate condition, as some volatile, low-boiling · X · X · X · χ X X X X X X X X X X X X X X X X X Perfume ingredients can provide a feeling of freshness and purity, and it is therefore highly desirable that these ingredients be delivered and present in a personal cleansing product.

Another problem arising from the direct addition of perfume to a thoroughly dry disposable product is that there is no flexibility to simultaneously optimize the odor in a clean product (eg, a disposable product) and during use of the product. For example, an optimum level of odor during use may result in a too strong odor of the pure product. Similarly, the optimum level of odor in a disposable product may lead to less satisfactory results in use. It would be desirable to be able to regulate odor independently of the pure product and when using the product.

Perfumes are ingredients that are usually added to personal cleansing products to impart aesthetically pleasing fragrances, as mentioned above. Perfumes can be designed and selected to create different consumer impressions. Unfortunately, any single perfume will typically carry only a single or continuous overall mission and will not likely transmit the composite functions of a multi-functional cleaning product, or will be improved when using the product to enhance product performance. Therefore, it is highly desirable for fragrances of dual nature to be added to personal cleansing products to transmit product characteristics or composite different product functions.

Surprisingly, the present inventors have found that the use of a fragrance-releasing complex provides a dry disposable cleansing and conditioning product (i) improved odor stability, (ii) increased flowering of the fragrance when using a disposable cleaning product, and (iii) a double-fragrance capability. The perfume component may comprise perfume complexed with various organic and inorganic substances.

It is therefore an object of the present invention to provide such thoroughly dry disposable cleaning products.

It is another object of the present invention to provide personal cleansing and conditioning products that consistently impart odor when used in combination with water.

These and other objects of the invention will be apparent from the following description.

SUMMARY OF THE INVENTION:

The present invention relates to a personal cleansing and conditioning product that is rinsed from the skin or hair and has suitable fragrance delivery properties, comprising: (A) a water-insoluble substrate, (B) at least one foaming surfactant. An agent added to or impregnated into this substrate and (C) a complex releasing agent. fragrance added to or impregnated into said substrate and constituting 0.015 to 15% by weight of said water-insoluble substrate, wherein said product is thoroughly dry before use. The fragrance-release complex comprises (i) 10 to 90% by weight of the porous fragrance carrier and (ii) 1 to 90% by weight of the fragrance impregnated into said carrier.

The present invention also relates to a method of making a disposable personal cleansing and conditioning product that is rinsed from the skin or hair and which has suitable fragrance delivery properties, comprising the steps of separately or simultaneously adding or impregnating to a water-insoluble substrate (A) at least one and (B) a fragrance-release complex added to or impregnated into said substrate and constituting 0.015 to 15% by weight of said water-insoluble substrate, wherein said article is thoroughly dry before use. The fragrance-release complex comprises (i) 10 to 90% by weight of the porous fragrance carrier and (ii) 1 to 90% by weight of the fragrance impregnated into said carrier.

In other embodiments, the flavor release complex is coated with a substance selected from the group consisting of paraffin waxes, microcrystalline waxes, animal waxes, vegetable waxes, saturated fatty acids and fatty alcohols, fatty acid esters, cellulose esters, polyalkylene glycol, polyvinyl alcohol, and mixtures thereof, and wherein the coating is present in an amount of 2 to 50% by weight of the fragrance-releasing complex.

In yet other embodiments, the present invention further comprises a component added to or impregnated into the substrate. The conditioning component comprises substances selected from the group consisting of water-soluble conditioning agents, fat-soluble conditioning agents, emulsifying agents, lipid-curing agents and mixtures thereof. The conditioning component preferably has a lipid hardness value greater than 0.02 kg. The conditioning component also preferably has a surface coating / leakage ratio greater than 1.25 at any point on the surface of the substrate.

All percentages and ratios used herein are by weight unless otherwise indicated, and all measurements were made at 25 ° C unless otherwise noted. The invention of this document may comprise, consist or consist essentially of the necessary as well as the optional ingredients and components described below.

Brief description of the drawings:

Figure 1 is a plan view of a cleaning and conditioning article of the present invention, wherein the article comprises an apertured paper layer and a nonwoven layer, with the paper layer shown in the paper layer shown in FIG. φ φφ φ towards the viewer and with a cut off portion of the apertured paper layer showing generally parallel, separate adhesive zones extending generally parallel to the longitudinal directions of the paper layer and the nonwoven layer.

Figure 2 is an illustration of a portion of the cleaning and conditioning article shown in Figure 1; Figure 2 is an enlargement of Figure 1 and illustrates creping combs in a paper layer.

Figure 3A is a cross-sectional illustration of the cleaning and conditioning article of the present invention along the direction indicated by line 3-3 in Figure 1 and showing the article before wetting the first layer.

Figure 3B is a cross-sectional illustration of the cleaning and conditioning article of the present invention along the direction indicated by line 3-3 in Figure 1 and showing the article after wetting the first layer.

Figure 4 is an illustration of a paper machine that can be used in the manufacture of paper fabrics that can be used to form the substrate portion of the cleaning and conditioning products herein.

Figure 5 is an illustration of a forming element that can be used in forming a paper warp with holes.

Detailed description of the invention:

The present invention provides the fragrance in an efficient and effective manner to a thoroughly dry, cleansing and disposable product. In particular, the personal cleansing products of the present invention may transmit the dual odor characteristics and may exhibit desirable odor characteristics in their pure (eg dry) form as well as during use. Thus, the personal cleansing products of the present invention provide (i) improved fragrance stability, (ii) increased fragrance bloom when using a disposable cleansing product, and (iii) the ability to double fragrance, although highly effective in skin or hair cleansing. These products may also contain a conditioning agent and other non-conditioning agents to be applied to the skin or hair.

By "foaming surfactant" is meant a surfactant which, when combined with water and mechanically mixed, forms a foam or suds. These surfactants should preferably be mild, meaning that these surfactants provide effective cleaning or cleaning benefits, but do not dry the skin or hair too much (eg by too much removal of natural fat and / or moisture) and still meet the foaming criteria described above.

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The term "disposable", or as used herein in the ordinary sense, means a product that is disposed of or discarded after single use.

The term "conditioning component" as used herein means a combination of conditioning agents. This combination also includes lipid-hardening agents.

The term &quot; water activated &quot; as used herein means that the present invention is presented to the user in dry form to be used after being wetted with water. These products have been found to produce foam or are "activated" by contacting them with water and then further exposing the product to mechanical forces such as friction.

The term "thoroughly dry" as used herein means that the product is thoroughly dewatered before use and generally appears to be dry to the touch. Thus, the article of the present invention will generally contain less than 10% by weight of water, preferably less than 5% by weight of water, and even more preferably less than 1% by weight of water, measured in a dry environment, e.g. at low humidity. One skilled in the art should recognize that the water content of an article, such as in the present invention, may vary depending on the relative humidity of the environment.

The term &quot; surface deposition / leakage ratio &quot; is a measurement of the ratio of the conditioning agent and the active ingredient that is on the surface of the substrate versus the conditioning agent and the active ingredient that is within the substrate. A person skilled in the art of analytical chemistry would be experienced in attenuated Total Reflectance (ATR) measurement of FTIR spectroscopy. What is considered a complete description is provided in the section entitled "Method for measuring the surface application of active ingredients and conditioning agents".

The term "Fine" as used herein with respect to foaming surfactants and products of the present invention means that the products of the present invention exhibit skin softness comparable to a synthetic soap bar, i.e., a fine alkyl glyceryl ether sulfonate (AGS) surfactant based. Methods for measuring the softness, or vice versa, of the surfactant-containing articles are based on a skin barrier destruction test. In this test, the finer the surfactant, the less the skin barrier is destroyed. The skin barrier destruction assay is measured by the relative amount of radiolabelled water (tritium, H-H2O) that passes from the test solution through the skin to the physiological buffer contained in the diffusate reservoir. This test is described by T. J. Franz in J. Invest. Dermatol. 1975, 64, 190-195 and U.S. Pat. No. 4,673,525 to Small et al., issued June 16, 1987, both of which are incorporated by reference in their entirety. Other methodologies for testing the fineness of a surfactant are well known to those skilled in the art and can also be used.

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The term "deposition consistency" as used herein means that the deposition of conditioning agents forming the conditioning component will be relatively uniform no matter how the user prepares for use and actually uses this cleaning and conditioning product (eg foaming the side of the treatment component substrate versus foaming of the substrate side with the surfactant). The products of the present invention will have a depositing consistency of greater than 60%, preferably greater than 65%, even more preferably greater than 70% and most preferably greater than 75%. The deposition consistency measure is the quotient obtained by dividing the amount of conditioning agents deposited under "non-ideal foaming and use" and the amount of conditioning agents deposited under "ideal foaming and use". Non-ideal foaming as used herein means that foaming is achieved by rubbing the surface of the conditioning agent product against or against each other and then contacting the skin or hair with the same surface. This causes ineffective deposition of the conditioning agents since some of the conditioning agents are emulsified by the surfactant. Ideal foaming as used herein means that foaming is achieved by rubbing the surface of the surfactant-containing article against or against each other but not containing the conditioning agents, and then contacting the skin or hair with the surface containing the conditioning component. The same starting points would be applied when both surfaces of the substrate were treated with conditioning agents (eg, deposition obtained by foaming and contacting the skin with the same foamed surface containing emulsified conditioning agents versus skin contact with a foamed surface containing non-emulsified conditioning agents). Deposition consistency is maximized when the lipid hardness of the conditioning components is greater than 0.02 kg.

The personal care products of the present invention comprise the following essential components: (A) a water-insoluble substrate, (B) at least one foaming surfactant added to or impregnated into the substrate, and (C) a fragrance-release complex added to or impregnated into said substrate. The articles of the present invention may further comprise a conditioning component added to or impregnated into the substrate.

I. Water insoluble substrate

The products of the present invention comprise a water-insoluble substrate. By "water-insoluble" is meant that the substrate does not dissolve in water or easily breaks when immersed in water. The water-insoluble substrate is a tool or means for delivering a foaming surfactant and conditioning the components of the present invention to the skin or hair to be cleaned and treated. Without being limited by theory, it is believed that a substrate, such as • 9 9 99 9 · 99 9 9

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Means for transmitting mechanical forces and providing agitation, provides a foaming effect, and also assists in depositing the conditioning component.

A wide variety of materials can be used as a substrate. The following non-limiting characteristics are suitable: (i) sufficient wet strength, (ii) sufficient abrasiveness, (iii) sufficient airiness and porosity, (iv) sufficient thickness and (v) suitable size.

Non-limiting examples of suitable insoluble substrates that meet the above criteria include nonwoven substrates, woven substrates, water-wound substrates, air-wound substrates, natural sponges, synthetic sponges, polymeric knitted nets, and the like. Preferred embodiments use nonwoven substrates because they are economical and readily available in a wide variety of materials. By non-woven substrate is meant a substrate whose layer is composed of fibers that are not woven into the fabric but rather arranged in a layer, tuft or cushion. The fibers may either be randomly arranged (i.e., irregularly arranged) or they may be carded (i.e. combed so as to be oriented predominantly in one direction). In addition, the nonwoven substrate may be a combination of layers of randomly arranged and carded fibers.

The nonwoven substrates may consist of a variety of both natural and synthetic materials. By nature it is meant that the materials come from plants, animals, or animal, plant and insect by-products. By synthetic it is meant that the materials are obtained primarily from various synthetic materials or from natural materials that have been further altered. A common base material is usually a fiber warp containing any fibers of known synthetic or natural textile fibers or mixtures thereof.

Non-limiting examples of natural materials useful in the present invention are silk fibers, keratin fibers and cellulose fibers. Non-limiting examples of keratin fibers include those fibers selected from the group consisting of wool, camel hair, and the like. Non-limiting examples of cellulose fibers include those selected from the group consisting of pulp fibers, cotton fibers, hemp fibers, jute fibers, flax fibers, and mixtures thereof.

Non-limiting examples of synthetic materials useful in the present invention include those selected from the group consisting of acetate fibers, acrylic fibers, cellulose ester fibers, modacrylic fibers, polyamide fibers, polyester fibers, polyolefin fibers, polyvinyl alcohol fibers, rayon fibers, polyurethane foam and mixtures thereof. Some examples of such synthetic materials include acrylic polymers such as acrilane, creslan and acrylonitrile based fibers, orion; cellulose ester fibers, such as cellulose acetate, • tttt tttt tttt tttt tttt tttt · tttt · tt ··· • tttttt tt ···· tt tttt · tt ··· tttt tt ·· tttt · · tttt · · tt · tt ··· ttt tttt tttt tttt tttt tttt amel and acele; polyamides such as nylons (eg, nylon 6, nylon 66, nylon 610 and the like); polyesters such as fortrel, codel and polyethylene terephthalate fibers, dacron; polyolefins such as polypropylene, polyethylene, polyvinyl acetate fibers; polyurethane foams and mixtures thereof. These and other suitable fibers and nonwoven materials prepared therefrom are generally described in Riedel &apos; s &quot; Nonwoven Bonding Methods and Materials &quot;, Nonwoven World (1987); in The Encyclopedia of American, Volume 11, pp. 147-153 and Volume 26, pp. 566-581 (1984); in U.S. Pat. No. 4,891,227 to Thaman et al., issued Jan. 2, 1990; and U.S. Pat. No. 4,891,228, all of which are incorporated herein by reference.

Nonwoven substrates made of natural materials consist of warps or layers most commonly formed from a liquid fiber suspension on fine wire screens. See. C. A. Hampel et al., The Encyclopedia of Chemistry, Third Edition, 1973, pp. 793-795 (1973); The American Encyclopedia, Vol. 21, pp. 376-383 (1984) and G. A. Smook, Handbook of Pulp and Paper Technologies, Technical Association for Pulp and Paper Industry (1986), incorporated herein by reference.

Substrates made of natural materials useful in the present invention can be obtained from a wide variety of commercial sources. Non-limiting examples of suitable commercially available paper layers useful in the present invention include Airtex®, a plastic air laid cellulose layer having a basis weight of 85 g / m ² , available from James River, Green Bay, Wisconsin; and Walkisoft®, a plastic airlaid cellulose layer having a basis weight of 90 g / m 2, available from Walkisoft USA, Mount Holly, North Carolina.

Methods for making nonwoven substrates are known in the art. Generally, these nonwoven substrates can be made by air winding, water winding, melt blowing, co-forming, spinning or carding processes in which the fibers or threads are first cut to the desired length from long fibers, passed through a stream of air or water and then laid on a screen through which air or water passes. The resulting layer, irrespective of the method of manufacture or composition, is then subjected to at least one of many types of bonding operations to anchor the individual fibers together to form a self-supporting warp. In the present invention, the nonwoven layer may be prepared by a variety of methods including water entanglement, thermal bonding, or thermal bonding, and combinations thereof. In addition, the substrates of the present invention may comprise a single layer or multiple layers. In addition, the multilayer substrate may include films and other non-fibrous materials.

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Nonwoven substrates made of synthetic materials useful in the present invention can also be obtained from various commercial sources. Non-limiting examples of suitable nonwoven laminates useful herein include HEF 40-047, which is a perforated water-knitted material comprising 50% rayon and 50% polyester and having a basis weight

51.43 g / m, available from Veratec, Inc., Walpole, Massachusetts; HEF 140-102, which is a perforated water-knitted material containing 50% rayon and 50% polyester and having

A basis weight of 66.98 g / m 2, available from Veratec, Inc, Walpole, Massachusetts; Novonet 149-616, a thermally bonded grid patterned material containing 100% polypropylene and having a basis weight of 59.82 g / m 2, available from Veratec, Inc., Walpole, Massachusetts; Novonet® 149-801, a thermally bonded grid patterned material comprising 69% rayon, 25% polypropylene, and 6% cotton and having a basis weight of 89.73 g / m ² , available from Veratec, Inc., Walpole, Massachusetts; Novonet® 149-191 which is a thermally bonded grid patterned material comprising 69% rayon, 25% polypropylene and 6% cotton and having a basis weight of 119.63 g / m, available from Veratec, Inc., Walpole, Massachusetts; HEF Nubtex® 149-801, which is a knotted, perforated, water-knitted material containing 100% polyester and having a basis weight of 83.75 g / m ² , available from Veratec, Inc., Walpole, Massachusetts; Keybak® 95IV, a dry-formed perforated material containing 75% rayon, 25% acrylic fibers and having a basis weight

51.44 g / m ² , available from Chicopee, New Brunswick, NJ; Keybak® 1368, which is a perforated material comprising 75% rayon, 25% polyester and having a basis weight of 46.66 g / m ² , available from Chicopee, New Brunswick, NJ; Duralace® 1236, which is a perforated, water-knitted material containing 100% rayon, and having a basis weight of 47.86 to 137.58 g / cm ² , available from Chicopee, New Brunswick, NJ; Duralace® 5904, which is a perforated, water-knitted material comprising 100% polyester and having a basis weight of 47.86 to 137.58 g / cm ² , available from Chicopee, New Brunswick, NJ; Sontara 8868, a water-knitted material comprising 50% cellulose and 50% polyester and having a basis weight of 71.78 µg / m 2, available from Dupont Chemical Corp.

Alternatively, the water-insoluble substrate may be a polymeric sponge as described in European Patent No. EP 702550 A1, published March 27, 1996, which is incorporated herein by reference in its entirety. The polymer sponge comprises a plurality of strands of shaped tubular sieve prepared from a highly flexible polymer, such as polymers of olefinic monomers and polyamides of polycarboxylic acids. Although these are polymers

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sponges designed for use with a liquid cleaning composition, these types of sponges can be used as a water-insoluble substrate in the present invention.

The substrate may be formed into a variety of shapes and forms including flat pads, thick pads, thin layers, lint-shaped tools, irregularly shaped tools, and has a surface area ranging from centimeters to hundreds of square centimeters. The exact size will depend on the desired use and product characteristics. Particularly common are square, round, rectangular or oval pads having a surface area of 6.5 to 929 cm, preferably 65.4 to 774 cm, and more preferably 193.5 to 516 cm, and a thickness of 0.025 to 12.7 mm, preferably 0.127 up to 6.35 mm and more preferably 0.254 to 2.54 mm.

The water-insoluble substrate according to the present invention may comprise two or more layers having different texture and abrasiveness. Different textures can result from the use of different combinations of materials or from different manufacturing processes or a combination of both. A dual textured substrate may be made to provide the advantage of a more abrasive peeling layer and a finer fine cleaning layer. In addition, the separate substrate layers have different colors, thereby helping the consumer to further distinguish these surfaces.

A. A water-insoluble substrate having at least one wet-extensible portion

The articles of the present invention may preferably comprise a water-insoluble substrate, wherein at least a first portion of said substrate is wet extensible and at least a second portion of said substrate is less extensible in moisture than said first portion. By wet-extensible is meant that the material, when wetted, tends to elongate in at least one direction. The extensibility test is shown below.

It is highly desirable to provide a cleaning and conditioning product having washcloth properties. These desirable features can be realized in disposable products by providing suitable texture, height (caliper) and volume (volume per unit weight). Relatively high texture values are useful in helping clean skin and hair. Relatively high height and volume values are useful in providing volume for receiving and retaining liquids by the product. Such washcloth-like articles typically have a substrate that contains one or more materials or layers. Surprisingly, it has been found that the present substrates, wherein at least a first portion of said substrate is wet extensible and at least a second portion of said substrate is less extensible wet than said first portion, provide these desirable washcloth-like properties.

One embodiment of a water-insoluble substrate having at least one wet-extensible portion is demonstrated in Figures 1 and 2.

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The invention includes a disposable wiping product with a multiple layer 20. Figures 1 to 2 show a two-layer embodiment of the present invention. Alternatively, the disposable wiping article may comprise more than two layers.

The disposable cleansing and conditioning article 20 comprises a substrate generally designated numerically 22. The substrate 22 comprises a first layer 100 and a second layer 200. The first layer 100 is apertured, wherein the first layer 100 comprises a plurality of apertures 102 that extend through the height of the first layer 100. In Figure 1, the brightness apertures 102 are shown only in a portion of the first layer 100.

The first layer 100 is wet extensible when wetted. The extensibility is measured according to the "wet extensibility test" described below and is given in percent. The second layer 200 is relatively less wet extensible than the first layer 100.

The selected portions of the first layer 100 are connected, directly or indirectly, to the second layer 200 to prevent stretching of the first layer in the plane of the first layer. In Figures 1 and 2, selected portions of the first layer 100 are joined to the second layer 200 to provide continuous joined areas designated 110 and separate unconnected areas 114.

In the embodiment shown in Figure 1, the bonded regions 110 are generally parallel, spaced apart regions that extend along the entire length of the article 20, and define the generally parallel, spaced apart bonded regions 114 of the first layer 100. The bonded regions 114 extend along the entire length of the article. The glue designated by numerical reference 300 in Figures 1 and 2 may be used to bond the first layer 100 and the second layer 200.

When the first layer is wetted, it tends to expand along one or more directions in the plane of the first layer. (The plane of the first layer is parallel to the plane of Figure 1). However, due to the relatively low wet extensibility of the second layer 200, the second layer limits the stretching of the first layer 100 in the plane of the first layer. As a result, the unconnected regions 114 of the first layer 100 deform, such as by bulging or corrugation in a Z-direction perpendicular to the plane of the first layer 100.

Figure 3A is an illustration of a cross-section of the cleaning and conditioning article 20 prior to wetting of the first layer 100. As shown in Figure 3A, the wiping article is typically flat prior to wetting. Figure 3B is a cross-sectional illustration similar to Figure 3A, but shows the article 20 after wetting the first layer 100. Figure 3B shows deformations outside the first layer 100 after wetting the first layer 100. The Z-direction is indicated in Figures 3A and 3B. Deformation of the moistened first layer 100 provides the article 20 with raised ridges 120 that increase the texture, height and wet volume of the article 20. In particular, the article 20 has a wet height to dry height ratio

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greater than 1.0 and preferably at least 1.1. The wet-to-dry-height ratio is measured from the height of the article 20 after wetting relative to the height of the dry product 20 before wetting. The wet-to-dry-height ratio is measured according to the "wet-to-dry-height ratio" procedure below.

The raised ridges 120 also provide bags 150 disposed between the unconnected portions of the first layer 100 and the underlying portions of the second layer 200. The apertures 102 provide leakage channels through which liquids and / or small particles may enter the bags 150.

In addition, since the article 20 is used with or contains a foaming agent, such as a surfactant, the apertures 102 can assist in incorporating air during the foaming process, thereby improving foam formation. For example, a portion of the article 20 may be coated or otherwise treated with a surfactant, as described in more detail below. The article 20 may be wetted with water to activate the surfactant, and the passage of air through the apertures 102 during use of the article (eg, washing or wiping) may aid in the formation of foam.

The size and number of holes 102 may affect the rate of foam formation and the quality of the foam formed. A relatively small number of relatively large apertures 102 will tend to reduce the time required to produce foam, but will produce relatively large transparent bubbles of foam. On the other hand, a relatively larger number of relatively smaller apertures 102 will result in a reduced bubble size, thereby increasing the softness and opacity of the foam, but increasing the time required for foam formation. 2 to 40 holes per centimeter can provide suitable foam quality and rate of foam formation.

First layer:

Referring in more detail to the components of the article 20, suitable materials from which the first layer 100 may be formed include shortened (e.g., creped) wet laid paper webs. Other suitable materials may include woven materials, nonwoven materials, foam, webs and the like.

The first layer 100 should be designed to have a wet extensibility of at least 4%, more preferably at least 10% and even more preferably at least 20%. In one embodiment, the first layer has a wet extensibility of 25%. The difference between the extensibility of the first and second wet layers (the extensibility of the second wet layer subtracted from the extensibility of the first wet layer) is preferably at least 4%, more preferably at least 10% and even more preferably at least 20%.

♦ Φ · Φ · · · · · · · · φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ • • • φ φ

The fibers or threads of the first layer 100 may be natural (eg, cellulosic fibers such as pulp fibers, cotton liners, rayon, and bagasse fibers) or synthetic (eg polyolefins, polyamides, or polyesters) or combinations thereof.

In one preferred embodiment, the first layer 100 comprises a wet laid paper web of pulp fibers that is shortened by creping by at least 4%, more preferably by at least 10% and even more preferably by at least 20%. Referring to Figure 2, the first layer 100 includes crepe spines 105 corresponding to a shortening of the first layer 100. The longitudinal direction (machine direction MD) and the cross machine direction (CD) are indicated in Figures 1 and 2. The longitudinal direction corresponds to the direction of production of the paper web of the first layer 100. The creping ridges 105 are perpendicular to the longitudinal direction and generally parallel to the transverse direction of the paper web of the first layer 100.

The paper web of the first layer 100 may have a basis weight between 25 and 45 g / m ² . In a preferred embodiment, the basis weight of the first layer 100 is 33 g / m 2.

The apertures 102 may be formed in the first layer 100 in any suitable manner. For example, the apertures 102 may be formed in the first layer 100 during formation of the paper web of the first layer 100, or optionally after the paper web of the first layer 100 is made. In one embodiment, the paper web of the first layer 100 is manufactured according to the teachings of one or more of the following U.S. Pat. patents, which are incorporated herein by reference: U.S. Pat. U.S. Patent No. 5,245,025, issued September 14, 1993 to Trokhan et al .; U.S. Pat. No. 5,277,761, issued Jan. 11, 1994 to Phan et al. and U.S. Pat. No. 5,654,076, issued Aug. 5, 1997 to Trokhan et al. In particular, U.S. Pat. No. 5,277,761 in box 10 discloses the formation of a paper web having apertures.

The crepe first layer 100 should have between 1 to 47 holes 102 per cm and more preferably between 1 to 16 holes 102 per cm before wetting the first layer. Wetting the crepe paper web causes the web to be expanded, if not limited, in at least one direction, such as in the longitudinal direction, such that the number of holes 102 per cm after wetting may be less than the number of holes per cm before wetting. Similarly, when holes are formed in a paper web and the paper web is subsequently creped, the number of holes per cm ² prior to creping may be less than the number of holes per cm ² after creping. Similar are the relationships for the sizes of the paper net to the sizes after creping and before wetting.

The apertures 102 may comprise 15 to 75% of the total area of the first layer 100. The apertures 102 shown in Figure 2 are alternately arranged (alternately arranged in both longitudinal and transverse directions) in a repeating, irregular pattern. In one embodiment, the first layer 100 comprises a paper web that is 25% dry creped (25% shortening). With this having a ductility of greater than 25%, and having from 6 to 6%, The apertures 102 have a length 103 (Figure 2) of 0.04 to 0.07 cm and a width 104 of 0.03 to 0.06 cm.

The paper web is first produced by forming an aqueous batch in paper making. The batch comprises paper-forming fibers and may further comprise various additives. U.S. Pat. No. 5,223,096, issued June 29, 1993 to Phan et al. is incorporated herein by reference for the purpose of disclosing various pulps and additives in paper making.

A suitable paper web for making the first layer 100 can be made as described below. The paper-making batch is prepared from water and highly refined Kraft pulp derived from north softwoods (NSK), having a fiber density of 0.2% by weight (dry fiber weight divided by total batch weight equal to 0.002) . A dry strength additive, such as carboxymethyl cellulose (CMC), is added to 100% NSK batches in an amount of 2.27 kg solid CMC per ton of dry fibers in the papermaking process. A wet strength additive such as Kymene 557H (available from Hercules, Inc. of Wilmington, Delaware) is added to the batch in an amount of 12.7 kg solid Kymene per tonne of dry fibers in papermaking.

Referring to Figure 4, the shaft is applied from the headbox 500 of the papermaking machine to the forming element 600 at a fiber density of 0.2%. The forming element 600 is in the form of an endless belt in Figure 4. A slurry of paper-forming fibers is applied to the forming element 600 and water from the slurry is dewatered through the forming element 600 to form a seed web of the paper-forming fibers designated numerically 543 in Figure 4.

Figure 5 shows a portion of the molding member 600. The molding member 600 has two opposing sides. The side shown in Figure 5 is the side that contacts the fibers forming the paper of the forming web. A description of a forming element of the type shown in Figure 5 is provided in the above-mentioned U.S. Pat. U.S. Patent Nos. 5,245,025; 5,277,761 and 5,654,076.

The molding member 600 has flow restriction components in the form of resin protrusions 659. The shown molding member 600 comprises a patterned array of protrusions 659 associated with a reinforcing structure 657 that may include a perforated base such as a woven mesh or other apertured structure. The protuberances 659 extend over the reinforcing structure 657.

A suitable molding element 600 has 6 protrusions 659 per cm surface of the molding element 600, with the protrusions 659 covering 35% of the surface of the molding element 600 as shown in Figure 5, and the protrusions extend 0.01 cm above the surface of the reinforcing structure 657. have a length in the longitudinal direction X of 0.06 cm and a width in the transverse direction Y of 0.04 cm.

• 4 4 4 4 4 4 4 4 4 4 4 4 4

4 4 ·· · 4,444 «4 4

4,444 4,444 4

444 ·· 44 44 44 44

The reinforcing structure 657 is perfectly permeable to fluids, while the protrusions 659 are completely impermeable to fluids. Thus, both the fluid from the batch during the papermaking process flows through the forming element, and the fiber forming paper in the batch will be retained on the reinforcing structure 657, leaving holes in the germline 543 corresponding generally to the size, shape and location of the size, shape and location of the protuberances 659.

Referring back to Figure 4, the embryonic web 543 is transferred to a conventional dewatering felt 550 by means of a vacuum sensing blade 560. The web 543 is transferred to the felt 550 at a fiber density of 4%. The web 543 is guided through a felt 550 for engagement 570 formed between the vacuum pressure roller 572 and the Yankee drying drum 575. The web 543 is dried on the Yankee drying drum 575 to a fiber density of 96% while the web is creped from the Yankee 575 drying drum using a creping scraper 577 bevel angle 25 ⁰ and impact angle 81 °. To achieve a belt reduction of 25%, the belt is wound or wound at a speed that is 25% slower than the Yankee 575 Drying Drum (the winding speed is equal to 0.75 times the machining speed). The shortened belt may have a basis weight of 33 g / m and a height of 0.031-0.033 mm, as measured by a limiting pressure of 14.73 g / cm and a loading foot having a diameter of 5.08 cm. The resulting truncated strip may be used to form a first layer 100 having a wet extensibility of at least 25%.

Second layer:

Referring back to Figures 1, 3A and 3B, the first layer 100 is bonded to the second layer 200 to prevent stretching of selected portions of the first layer 100 after wetting. The second layer 200 has a lower wet extensibility than the first layer 100.

Suitable materials from which the second layer 200 may be formed include woven materials, nonwoven materials, foams, webs and the like. Particularly preferred materials are nonwoven webs having fibers or threads randomly distributed as in "air-wound" or certain "water-wound" processes, or with a degree of orientation such as in certain "wet-wound" and "carding" processes.

One of the materials from which the second layer 200 may be formed is a nonwoven warp formed by water-entangled fibers. A suitable water-warp warp is a non-woven, water-warp warp comprising 50% by weight of rayon fibers and 50% by weight of polyester fibers having a basis weight of 62 g / m ² . A suitable water-entangled nonwoven warp is commercially available from PGI Nonwovens, Ohio, Benson, North Carolina under the designation Chicopee 9931.

• 9 · 99 · 9 9

9,999 9 9 9 *

999 9 9

9 9 * 9 99 999 * 9 9

999 9 * 99 9 9 · 9 * 99 99

Connection

Referring again to Figures 1, 3A and 3B, selected portions of the first layer 100 are bonded directly (or indirectly, such as through a third component) to the second layer 200 with a predetermined binding style to provide a plurality of bonded and unbonded portions of the first layer 100 In Figures 1 and 2, the bonded areas are designated 110 and the bonded areas are labeled 114. Both the first layer 100 and the second layer 200 may have a longitudinal direction and the two layers may be joined such that the longitudinal direction of the first layer is generally parallel to the longitudinal direction of the second. layers.

The first layer 100 and the second layer 200 may be joined in a suitable manner including, without limitation, adhesive bonding, mechanical bonding, thermal bonding, mechanical-thermal bonding, ultrasonic bonding, and combinations thereof.

In one embodiment, the first layer 100 may be bonded to the second layer 200 by an adhesive 300 applied to selected portions of the second layer 200. The adhesive is preferably water insoluble such that the article 20 can be wetted with water without delamination of the first and second layers. The adhesive is also preferably compatible with the surfactant. "Surfactant-compatible" means that the bonding properties of the adhesive are not impaired by the presence of the surfactant. Suitable adhesives include hot melt adhesives based on ethylene vinyl acetate (EVA). One suitable adhesive is a hot melt adhesive commercially available as H1382-01 from Findley Adhesives of Wauwatos, Wisconsin.

Referring to Figures 1 and 2, the hot melt adhesive may be applied to the nonwoven second layer 200 in strips that extend parallel to the longitudinal direction of the nonwoven second layer 200. The hot melt adhesive may be applied in strips 310 having a width W (Figure 1). ) 0.318 to 2.54 cm. The spacing D between adjacent adhesive strips may be 0.318 to 5.08 cm. In Figure 1, five strips 310A, 310B, 310C, 310D and 310E are shown. In one embodiment, the width W of the strips 310A, 310C, and 310E may be 1.27 cm, the width W of the strips 31 OB and 31 OD may be 0.635 cm, and the spacing D between adjacent strips may be 2.54 cm.

The glue may be applied to the nonwoven second layer 200 by means of a slotted applicator. A suitable slot-type applicator is the Nordson MX series extruder head melter commercially available from Nordson Company of Norcross, Georgia. The H1382-01 adhesive mentioned above can be applied to the second layer 200 at 194 ° C and at an application level of 4.65 mg / cm ² . Immediately after applying the adhesive to the nonwoven second layer 200, the nonwoven layer 200 and the paper first layer 100 may be bonded together by compressing these layers 100 and 200 together with an adhesive disposed between the second layer 200 and the first layer.

999 9 9 9 · «χ 9 9 9

999 99 999 · X X

XX 9Χ9Χ ΧΧΧΧ 999 XX XX XX XX

100. One convenient way of compressing the two layers 100 and 200 together is to pass the two layers through a press formed by two rollers which are loaded to provide sufficient press pressure for coupling.

The resulting laminate of the first and second layers may have an average dry height of 0.0724 cm, an average wet height of 0.0815 cm, and a wet height to dry height ratio of 1.1. Dry height, wet height and wet height to dry height ratio are measured as described below under the heading "wet height to dry height ratio".

The resulting laminate material of the first and second layers has separate, generally rectangular bonded areas 110 and separate, typically rectangular bonded areas 114. The first and second layers 100 and 200 may be bonded together to provide a different pattern of bonded and unbonded areas. For example, the adhesive could be applied in a continuous web to the second layer 200 to provide a continuous bonded area 110 and separate unbonded areas 114 having any suitable shape including, without limitation, circles, ovals, triangles, rhombuses and the like.

Wet extensibility test

The wet extensibility of the layer, such as layer 100 or layer 200, is determined by the following procedure. Prior to testing, the samples were conditioned for two hours at 38.9 ° C and 50% relative humidity.

Firstly, the direction of greatest wet extensibility in the plane of the layer is determined. For dry creped paper webs, this direction is parallel to the longitudinal direction and generally perpendicular to the crepe spines.

When the direction of greatest wet extensibility is unknown, this direction can be determined by cutting seven sheets from the sheet with sample lengths oriented between 0 and 90 ^° inclusive of the reference line drawn on the sheet. To determine the direction of greatest wet extensibility, the samples are then measured as explained below.

Once the direction of maximum wet extensibility is determined, 8 samples are cut to have a length of 17.78 cm measured parallel to the direction of greatest wet extensibility and a width of at least 2.54 cm. The samples are cut from the unconnected regions of layers 100 and 200, or if the unconnected regions having the above dimensions cannot be cut from the article 20, they are cut from the layers 100 and 200 prior to the mating of the layers. Two marks shall be drawn on each sample, eg by an ink pen. The marks are 12.7 cm apart, which is measured parallel to the direction of greatest wet extensibility. This 12.7 cm length is the initial dry sample length tested.

· · · «« «« «« ····················

Each sample is completely moistened by immersing the sample for 30 seconds in distilled water in a water bath. Each sample is removed from the water bath and immediately supported so that it is suspended vertically so that the line through the two marks is generally vertical. The wet sample is supported so that the holder does not interfere with the extension between two marks (eg, a clamp that does not touch the sample between two marks). The wet sample length tested is the distance between two marks. The distance is measured within 30 seconds after removal of the sample from the water bath.

The wet extensibility is calculated for each sample as:

Wet Extensibility of Sample = [Wet Length Tested - Initial Dry Test Length (12.7 cm)] / (Initial Dry Test Length) x 100

For example, for a wet length of 16.51 cm and an initial dry length of 12.70 cm, the wet extensibility ((16.51-12.70) / 12.70) x100 = 30%.

The wet extensibility of the samples is the average of 8 calculated extensibility values! of the wet sample.

The ratio of wet height to dry height

The ratio of wet height to dry height is measured according to the following procedure. Prior to testing, the samples were conditioned for two hours at 38.9 ° C and 50% relative humidity.

The dry height of the article 20 is measured by a cut-off pressure of 14.73 g / cm and a loading foot having a diameter of 5.08 cm. The dry height is measured for nine samples. The height for each sample is measured with a loading shoe centered on the unconnected region of the first layer 100. Nine height measurements are averaged to provide an average dry height.

Each sample is then moistened by immersion for 30 seconds in distilled water in a water bath. The sample is then removed from the water bath. The wet sample height is then measured within 30 seconds after removal of the sample from the bath. The wet height is measured in the same position as the dry height previously measured. The nine wet height measurements are averaged to provide an average wet height.

The ratio of wet height to dry height is the average wet height divided by the average dry height.

II. Foaming surfactant

The products of the present invention contain 0.5 to 12.5% by weight, preferably 0.75 to 11% by weight, and more preferably 1 to 10% by weight, based on the weight of the water-insoluble foaming surfactant.

· · · · · · · · · Φ · · · · · · · · ·

By foaming surfactant is meant a surfactant which, when mixed with water and mechanically mixed, forms a foam or suds. The surfactants or combination of surfactants should preferably be soft, which means that these surfactants provide sufficient cleaning benefits but do not dry the skin or hair too and still meet the foaming criteria described above.

A variety of foaming surfactants are useful and include those selected from the group consisting of anionic foaming surfactants, nonionic foaming surfactants, amphoteric foaming surfactants, and mixtures thereof. Cationic surfactants may also be used as optional ingredients provided that they do not adversely affect the overall foaming properties of the desired foaming surfactants.

A. Anionic foaming surfactants

Non-limiting examples of anionic foaming surfactants useful in the compositions of the present invention are disclosed in McCutcheon's Deterents and Emulsifiers, North American edition (1986), Publishing Corporation; in McCutcheon's Functional Materials, North American edition (1992); No. 3,929,678 to Laughlin et al., issued Dec. 30, 1975, all of which are incorporated by reference in their entirety.

A large number of anionic foaming surfactants are useful herein. Non-limiting examples of anionic foaming surfactants include those selected from the group consisting of sarcosinates, sulfates, lactylates (lactylactates), 2-hydroxyethanesulfonates,

2-aminoethanesulfonates, phosphates and mixtures thereof. Among the 2-hydroxyethanesulfonates, alkanoyl-2-hydroxyethanesulfonates are preferred, and among the sulfates, alkylsulfates and alkyl ether sulfates are preferred. Alkanoyl-2-hydroxyethanesulfonates typically have the general formula RCO-OCH 2 CH 2 SO 3 M, wherein R is an alkyl or alkenyl group of 10 to 30 carbon atoms and M is a water-soluble cation such as a cation derived from ammonia, sodium, potassium and triethanolamine. Non-limiting examples of these 2-hydroxyethanesulfonates include those alkanoyl-2-hydroxyethanesulfonates selected from the group consisting of ammonium cocoyl-2-hydroxyethanesulfonate, sodium cocoyl-2-hydroxyethanesulfonate, sodium lauroyl-2-hydroxyethanesulfonate, and mixtures thereof.

Alkyl sulfates and alkyl ether sulfates typically have the respective formulas ROSO 3 M and RO (C 2 H 4 O) _x SC> 3 M, wherein R is an alkyl or alkenyl group of 10 to 30 carbon atoms, x is 1 to 10 and M is a water-soluble cation such as from ammonia, sodium, potassium and triethanolamine. Another suitable class of anionic surfactants are the water-soluble salts of organic products when reacted with sulfuric acid of the formula R 1 -SO 2 -M, wherein R ¹ is selected from the group consisting of straight or branched chain saturated aliphatic hydrocarbon groups having from 8 to 24, preferably 10 to 16 carbon atoms and M is a cation. Still other anionic synthetic surfactants include the class designated succinamates, olefin sulfonates having 12 to 24 carbon atoms, and β-alkoxyalkane sulfonates. Examples of these are sodium lauryl sulfate and ammonium lauryl sulfate.

Other anionic agents include sarcosinates, non-limiting examples of which include sodium lauroyl sarcosinate, sodium cocoyl sarcosinate, and ammonium lauroyl sarcosinate.

Other useful anionic agents include soaps (i.e., alkali salts, e.g., sodium or potassium salts) of fatty acids typically having 8 to 24 carbon atoms, more preferably 10 to 20 carbon atoms. The fatty acids used in the production of soaps may be obtained from natural sources such as glycerides obtained from plants or animals (eg palm oil, coconut oil, soybean oil, castor oil, tallow, lard, etc.). Fatty acids can also be prepared synthetically. Soaps are described in more detail in U.S. Pat. No. 4,557,853 cited above.

Other anionic agents include phosphates such as monoalkyl, dialkyl, and trialkylphosphate salts.

Other anionic agents include alkanoyl sarcosinates corresponding to the general formula RCON (CH3) CH2CH2CO2M, wherein R is an alkyl or alkenyl group of 10 to 20 carbon atoms and M is a water-soluble cation such as ammonia, sodium, potassium and trialkanolamine ( e.g. triethanolamine) and a preferred example of which is sodium lauroyl sarcosinate.

Also useful are 2-aminoethanesulfonates, which are derived from taurine, also known as 2-aminoethanesulfonic acid. Examples of 2-aminoethanesulfonates include N-alkyltaurines, such as that prepared by reacting dodecylamine with sodium 2-hydroxyethanesulfonate according to the teachings of U.S. Pat. No. 2,658,072, which is incorporated herein by reference in its entirety.

Lactlates are also useful. Non-limiting examples of lactylates include sodium lauroyl lactylate, sodium cocoyl lactylate, ammonium lauroyl lactylate, caproyl lactylate, and triethanolammonium ("TEA") lauroyl lactylate.

Non-limiting examples of useful preferred anionic foaming surfactants herein include those selected from the group consisting of sodium lauryl sulfate, ammonium lauryl sulfate, ammonium laureth sulfate, sodium laureth sulfate, sodium trideceth sulfate, ammonium cetyl sulfate, sodium cetyl sulfate, cocoyl-2-hydroxyethane sulfate, coyoyl 2-hydroxyethane sulfate.

sodium, lauroyl lactylate, triethanolammonium lauroyl lactylate, sodium lauroyl sarcosinate, and mixtures thereof.

Particularly preferred for use in the present invention is ammonium lauryl sulfate, ammonium laureth sulfate, sodium lauroyl lactylate, caproyl lactylate, and triethanolammonium lauroyl lactylate.

B. Non-ionic foaming surfactants

Non-limiting examples of nonionic foaming surfactants for use in the compositions of the present invention are disclosed in McCutcheon's Detergents and Emulsifiers, North American edition (1986), Publishing Corporation and McCutcheon's Functional Materials, North American edition (1992), both of which are incorporated by reference. references in their entirety.

Non-ionic foaming surfactants useful herein include those selected from the group consisting of alkyl glucosides, alkyl polyglucosides, polyhydroxylated fatty acid amides, alkoxylated fatty acid esters, sucrose foaming esters, amine oxides, and mixtures thereof.

Alkylglucosides and alkylpolyglucosides are useful herein and can generally be defined as the condensation products of long-chain alcohols, e.g., C8-C30 alcohols, with sugars or starches or sugars or starch polymers, i.e. glycosides or polyglycosides. These compounds may be represented by the general formula (S) n -O-R, wherein S is a sugar moiety such as glucose, fructose, mannose, and galactose; n is an integer from 1 to 1000 and R is a C 8 -C 30 alkyl group. Examples of long chain alcohols from which an alkyl group may be derived include decyl alcohol, cetyl alcohol, stearyl alcohol, lauryl alcohol, myristyl alcohol, oleyl alcohol and the like. Preferable examples of these surfactants include those wherein S is the glucose moiety, R is a C 8 -C 20 alkyl group, and n is an integer from 1 to 9. Commercially available examples of such surfactants include decylpolyglucoside (available as APG 325 CS from Henkel) and lauryl polyglucoside (available as APG 600 CS and 625 CS from Henkel). Also useful are surfactants based on sucrose esters such as sucrose cocoate and sucrose laurate.

Other useful nonionic surfactants include those based on polyhydroxy fatty acid amides, more specific examples of which include glucosamides corresponding to the general structural formula:

OR ₂ II I RC-N23 This is where this: R ¹ is H, C 1 -C 4 alkyl, 2-hydroxyethyl, 2-hydroxypropyl a group, preferably a C 1 -C 4 alkyl group, more preferably a methyl or ethyl group, most preferably a methyl group; R is a C 5 -C 31 alkyl or alkenyl group, preferably a C 7 -C 19 alkyl or alkenyl group, more preferably a C 9 -C 17 alkyl or alkenyl group, most preferably a C 11 -C 15 alkyl or alkenyl group; and Z is a polyhydroxy hydrocarbon moiety having a linear hydrocarbon chain with at least 3 hydroxyl groups directly bonded to the chain, or an alkoxylated derivative thereof (preferably ethoxylated or propoxylated). Z is preferably a sugar moiety selected from the group consisting of glucose, fiructose, maltose, lactose, galactose, mannose, xylose, and mixtures thereof. A particularly preferred surfactant corresponding to the above structure is an alkyl-N-methylglucosamide wherein the alkyl is derived from coconut oil (i.e., where the R ² CO group is derived from coconut oil fatty acids). Processes for making polyhydroxy fatty acid amide-containing compositions are disclosed, for example, in GB Patent Specification 809,060 published February 18, 1959 by Thomas Hedley & U.S. Patent No. 2,965,576 to ER Wilson, issued December 20, 1960; U.S. Patent No. 2,703,798 to AM Schwartz, issued March 8, 1955, and U.S. Patent No. 1,985,424 to Piggott, issued December 25, 1934, which are incorporated by reference in their entirety.

Other examples of nonionic surfactants include amine oxides. The amine oxides correspond to the general formula RRR NO, wherein R contains an alkyl, alkenyl or monohydroxyalkyl group of 8 to 18 carbon atoms, 0 to 10 ethylene oxide moieties and 0 to 1 glyceryl moieties, and R and R contain 1 to 3 carbon atoms and 0 to 1 hydroxyl a methyl, ethyl, propyl, hydroxyethyl or hydroxypropyl group. The arrow in the formula is a common representation of a semi-polar bond. Examples of amine oxides suitable for use in the present invention include dimethyldodecylamine oxide, oleyldi (2-hydroxyethyl) amine oxide, dimethyloctylamine oxide, dimethyldecylamine oxide, dimethyltetradecylamine oxide, 3,6,9-trioxaheptadecyldiethylamine oxide, di (2-hydroxyethyl) tetradecylamine oxide, 2-dodecyloxy oxide, 2-dodecyloxy oxide -hydroxypropyldi (3-hydroxypropyl) amine oxide, dimethylhexadecylamine oxide.

Non-limiting examples of preferred nonionic surfactants useful herein are those selected from the group consisting of C ₈ -C 14 glucosamides, C ₈ -C 14 alkylpolyglucosides, sucrose cocoate, sucrose laurate, lauramine oxide, cocoamine oxide, and mixtures thereof.

C. Amphoteric foaming surfactants XX · XX X X X X X X XX XX XX XX XX

The term "amphoteric foaming surfactant" as used herein also includes zwitterionic surfactants, which are well known to those skilled in the art as a subset of amphoteric surfactants.

A large number of amphoteric foaming surfactants can be used in the compositions of the present invention. Particularly useful are those which are extensively described as derivatives of aliphatic secondary and tertiary amines, wherein the nitrogen is preferably a cation in which the aliphatic groups may be straight or branched chains and wherein one of the groups contains a water ionizable group such as a carboxyl group , sulfonate, sulfate, phosphate or phosphonate.

Non-limiting examples of amphoteric surfactants useful in the compositions of the present invention are disclosed in McCutcheon's Detergents and Emulsifiers, North American edition (1986), Publishing Corporation and McCutcheon's Functional Materials, North American Edition (1992), both of which are incorporated by reference. their full wording.

Non-limiting examples of amphoteric or zwitterionic surfactants are those selected from the group consisting of betaines, sultains, hydroxysultains, alkyliminoacetates, iminodialkanoates, aminoalkanoates, and mixtures thereof.

Examples of betaines include higher alkyl betaines such as cocodimethylcarboxymethyl betaine, lauryldimethylcarboxymethyl betaine, lauryldimethyl-α-carboxyethyl betaine, cetyldimethylcarboxymethyl betaine, cetyldimethyl betaine (available as Lonzaine 16SP from Lonza Corp.), lauryl-bis- (2-hydroxyethyl) carboxymethyl carboxymethyl carboxymethyl betaine , lauryl-bis- (2-hydroxypropyl) -α-carboxyethyl betaine, cocodimethylsulfopropyl betaine, lauryldimethylsulfoethyl betaine, lauryl-bis- (2-hydroxyethyl) sulfopropyl betaine, amidobetaines and amidosulfobetaines (wherein the RCONH (CH 2) 3 group is attached to the nitrogen atom of betaine betaine) (available as amphoteric Velvetex OLB-50 from Henkel) and cocamidopropyl betaine (available as Velvetex BK-35 and BA-35 from Henkel).

Examples of sultaines and hydroxysultaines include materials such as cocamidopropylhydroxysultain (available as Mirataine CBS from Rhone-Poulenc).

Preferred for use in the present invention are amphoteric surfactants having the following structure:

Rc-NH-CH2-N-R-X '

R ³ ··· · * · · tt ·:: · * ..::. ::::

Wherein R ¹ is an unsubstituted, saturated or unsaturated, unbranched or branched alkyl chain having 9 to 22 carbon atoms. A preferred R ¹ group has 11 to 18 carbon atoms, more preferably 12 to 18 carbon atoms, even more preferably 14 to 18 carbon atoms; m is an integer from 1 to 3, more preferably from 2 to 3, and most preferably 3; n is either 0 or 1, preferably 1; R ² and R ³ are independently selected from the group consisting of alkyl having 1 to 3 carbon atoms, unsubstituted or monosubstituted hydroxy, preferably R ² and R ³ are CH 3; X is selected from the group consisting of CO 2, SO 3 and SO 4; R ⁴ is selected from saturated or unsaturated, unbranched or branched alkyl chain, unsubstituted or monosubstituted with hydroxy having 1 to 5 carbon atoms. When X is CO 2, R ⁴ preferably has 1 to 3 carbon atoms, more preferably 1 carbon atom. When X is SO 3 or SO 4, R ⁴ preferably has 2 to 4 carbon atoms, more preferably 3 carbon atoms.

Examples of amphoteric surfactants of the present invention include the following compounds:

Cetyl dimethyl betaine (this substance also has the CTFA designation cetyl betaine) ^CH 3

C ₁₆ h ₃₃ - n-ch ₂ -co ₂ 'ch ₃

Cocamidopropyl betaine o _{3 3} l ₊

RC-NH- (CH ₂ ) n -CH ₂ - CO ₂ CH ₃ wherein R has 9 to 13 carbon atoms.

Kokamidopropylhydroxysultain

OCH ₃ OH 1 ₊ 1

RC-NH- (CH ₂ ) -N-CH-CH-CH-SO ₃ CH ₃ wherein R has 9 to 13 carbon atoms.

• · · • 4 4 4 44 44 • · · 4 4 4 4 4 • 4 • ··· • • 4 ·· 4 4 4 4 4 • · · 4 4 4 4 4 4 4 4 44 · 44 4 4 44 4 4 44

Examples of other useful amphoteric surfactants are alkyliminoacetates, iminodialkanoates and aminoalkanoates of the formulas RN [(CH2) _m CO2M] 2 and RNH (CH2) _m CO2M wherein m is 1 to 4, R is C8-C22 alkyl or alkenyl, and M is H, alkali metal, alkaline earth metal, ammonium or alkanolammonium. Also included are imidazolinium and ammonium derivatives. Specific examples of amphoteric surfactants include sodium 3-dodecylaminopropionate, sodium 3-dodecylaminopropanesulfonate, N-above alkylated aspartic acid, such as those made according to the teachings of U.S. Patent No. 2,438,091, which is incorporated herein by reference in its entirety, and products sold. under the name "Miranol" and described in US Patent No. 2,528,378, which is incorporated herein by reference in its entirety. Other examples of useful amphoteric substances include amphoteric phosphates such as cocamidopropyl phosphate-PG-dimethylammonium chloride (commercially available as Monaquat PTC from Mona Corp.). Also useful are amfoacetates such as disodium lauroamphodiacetate, sodium lauroamfoacetate and mixtures thereof.

Preferred foaming surfactants for use in the present invention are those wherein the anionic foaming surfactant is selected from the group consisting of ammonium lauroyl sarcosinate, sodium tridecethsulfate, sodium lauroyl sarcosinate, ammonium laurethsulfate, sodium laurethsulfate, ammonium lauryl sulfate, sodium lauryl sulfate. ammonium, sodium cocoyl-2-hydroxyethanesulfonate, sodium lauroyl-2-hydroxyethanesulfonate, sodium cetylsulfate, and mixtures thereof; wherein the non-ionic foaming surfactant is selected from the group consisting of lauramine oxide, cocamine oxide, decylpolyglucose, laurylpolyglucose, sucrose cocoate, C12-C14 glucosamides, sucrose laurate, and mixtures thereof; and wherein the amphoteric foaming surfactant is selected from the group consisting of disodium lauroamphodiacetate, sodium lauroamfoacetate, cetyl dimethyl betaine, cocamidopropyl betaine, cocamidopropylhydroxysultain, and mixtures thereof.

III. Fragrant component

The products of the present invention comprise a fragrance component which, by providing an olfactory aesthetic benefit, enhances consumer acceptance and / or serves as a signal that the product is effective. These products deliver fragrances in an efficient, stable and efficient way. In general, any fragrance or odor complex technology may be used in the products of the present invention. Preferred technologies are those which (i) prevent the loss, oxidation and chemical reaction of the odor prior to use by the consumer, and (ii) effectively release the odor upon wetting the article with an aqueous solution such as water.

A. A fragrance-releasing complex

• 9 9 • · · 99 • 9 9 9 9 9 99 9 99 9 9 9 999 9 9 9 99 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 • 99 99 • 9 9 9 9 9 99

The personal cleansing products of the present invention contain from 0.01 to 20% by weight, preferably from 0.015 to 15% by weight, and most preferably from 0.02 to 10% by weight, based on the weight of the substrate, of the fragrance-release complex. The fragrance-release complex comprises a porous fragrance carrier and a fragrance that is impregnated into the fragrance carrier. Preferred flavor release complexes are those that (i) prevent the loss, oxidation and chemical reaction of the flavor prior to use by the consumer, and (ii) effectively release the flavor upon wetting the article with an aqueous solution, e.g., water.

The weight ratio of fragrance to fragrance carrier in the fragrance-releasing complex is typically 5: 1 to 1:10, preferably 5: 1 to 1: 2, more preferably 2: 1 to 1: 2 depending on the absorbance of the fragrance carrier. When a high absorbency scent carrier is used, the weight ratio of scent to scent is 5: 1. When using a low absorbency scent carrier, the weight ratio of scent to scent is 1:10. For fragrance carriers with average absorbances, the weight ratio of fragrance to fragrance is between 5: 1 and 1:10. Some typical scent-to-scent weight ratios for certain major scent carriers are shown in the table below:

Fragrance carrier The ratio of fragrance to smell Silica 2 - 1 Zeolite 1: 6 β-Cyclodextrin 1: 6

Scent:

The fragrance-releasing complex comprising the personal cleansing products of the present invention comprises 1 to 90% by weight, preferably 15 to 80% by weight, more preferably 40 to 70% by weight, of the complex of fragrance. The term "fragrance" as used herein includes perfume ingredients, a cooling medium, and other tactile agents or combinations thereof.

The perfume ingredients used in the personal cleansing products of the present invention are conventional ingredients known in the art. Even perfume ingredients that are unstable due to volatility (which is noticeable by change in intensity) or change color when used in pure form are stable and suitable for use in the personal cleansing products of the present invention when impregnated into the fragrance carrier as is described in the following. As used herein, fragrance is considered to be "stable" if it does not show any significant changes in color or intensity and when it does not show any significant loss due to volatility after 10 days at 66.7 ° C.

Suitable perfume compounds and compositions can be found in the prior art including U.S. Pat. U.S. Patent Nos. 4,145,184, Brain and Cummins, issued March 20, 1979; No. 4,209,417, Whyte, issued June 24, 1980; 4,515,705, Moeddel, issued May 7, 1985;

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No. 4,152,272, Young, issued May 1, 1979; No. 5,378,468, Suffis et al., Issued Jan. 3, 1995; No. 5,266,592, Grub et al., Issued Nov. 30, 1993; 5,081,111, Akimoto et al., Issued Jan. 14, 1992; No. 4,994,266, Wells, issued Feb. 19, 1991; 4,524,018, Yemoto et al., Issued June 18, 1985; No. 3,849,326, Jaggers et al., Issued Nov. 19, 1974; No. 3,779,932, Jaggers et al., Issued Dec. 18, 1973; JP 07-179,328 published July 18, 1995; JP 05-230496 published September 7, 1993; WO 96/38528 published December 5, 1996; WO 96/14827 published May 23, 1996; WO 95/04809 published February 16, 1995 and WO 95/16660 published June 22, 1995; all patents and references cited herein are incorporated by reference. In addition, reference is made to the publication by P. M. Muller, D. Lamparsky "Perfiunes Art, Science & Technology", Blackie Academie & Professional (New York, 1994).

Perfumes may be classified according to their volatility. Highly volatile, low-boiling perfume ingredients typically have a boiling point of 250 ° C or less. Medium volatile perfume ingredients are those having a boiling point of 250-300 ° C. Low volatile, high boiling perfume ingredients are those having a boiling point of 300 ° C or higher. A large number of perfume ingredients to be discussed further, together with their flavor and / or taste characteristics and their physical and chemical properties, such as boiling point and relative molar mass, are provided in "Perfume and Flavor Chemicals (Aroma Chemicals)" , Steffen Arctander, published by the author in 1969 and incorporated herein by reference.

Examples of highly volatile, low-boiling perfume ingredients are: anethole, benzaldehyde, benzyl acetate, benzyl alcohol, benzyl formate, isobomyl acetate, camphane, cis-citral (neral), citronellal, citronellol, citronellyl acetate, p-cymene, decanal , dihydrolinalool, dihydromyrcenol, dimethylphenylcarbinol, eucalyptol, geranial, geraniol, geranyl acetate, geranyl nitrile, cis-3-hexenyl acetate, hydroxycitronellal, d-limonene, linalool, linalool oxide, linalyl acetate, linalyl-propionate, α-methyljonone, methylnonylacetaldehyde, methylphenylcarbinyl acetate, 1-menthyl acetate, menthon, iso-menthon, myrcen, myrcenyl acetate, myrcenol, nerol, neryl acetate, nonyl acetate, phenylethyl alcohol, α-pinene, β-pinene, γ-terpine, α-terpineol, β-terpineol, terpinyl acetate and vertenex (tert-butylcyclohexyl acetate). Some of the natural essential oils also contain a high percentage of highly volatile perfume ingredients. For example, lavandine contains as main ingredients: linalool, linalyl acetate, geraniol and citronellol. Lemon essential oil and orange terpenes contain 95% d-limonene.

Examples of moderately volatile perfume ingredients are: amyl-3-phenyl-2-propenal, iso-amyl-salicylate, β-caryophyllene, cedren, 3-phenyl-2-propenol, coumarin, dimethylbenzylcarbinyl acetate, ethyl-vanillin, eugenol, iso -eugenol, floracetat, heliotropin,

• ·· ·· ·· ·· ·· · • • • • • • • • ··· • • • · · • t • • • • · · • • • · • • • • • · · · · ·· • · • · ··

3-cis-hexenyl salicylate, hexyl salicylate, lilial (p-tert-butyl-α-methyl-3-phenylpropenal), γ-methyljonone, nerolidol, patchouli alcohol, phenylhexanol, β-selenium, trichloromethylphenylcarbinyl acetate, triethyl- citrate, vanillin and veratral. Cedarwood terpenes are composed predominantly of α-cedren, β-cedren, and other C15H24 sesquiterpenes.

Examples of low volatility, high boiling perfume ingredients are: benzophenone, benzyl salicylate, ethylenebrasylate, galaxolide (1,3,4,6,7,8-hexahydro-4,6,6,7,8,8-hexamethylcyclopenta-y-2) -benzopyran), hexyl-3-phenyl-2-propenal, lyral (4- (4-hydroxy-4-methylpentyl) -3-cyclohexene-10-carboxaldehyde), methylcedrylon, methyl dihydrojasmonate, methyl-4-naphthylketone, musk indanone , musk ketone, musk tibetene and phenylethylphenyl acetate.

As mentioned above, the fragrance used in the personal cleansing products of the present invention may also contain a cooling agent or a combination of cooling agents. Coolants are compounds that directly affect the nerve endings that are responsible for the perception of heat or cold. Suitable cooling agents are menthol, menthol-based carboximides or acyclic carboximides, camphor, eucalyptus, and menthol-based ketals (acetals) or acyclic ketals (acetals). The cooling agents that are particularly preferred for use in the personal cleansing products of the present invention are selected from the group consisting of 3-1-menthoxypropane-1,2-diol, N-substituted-p-menthane-3-carboxamides and acyclic carboxamides and mixtures thereof .

3-1-menthoxy-propane-1,2-diol is described in detail in U.S. Pat. No. 4,459,425, issued July 10, 1984 to Aman et al., incorporated herein by reference. This volatile fragrance is commercially available as TK-10 from Takasago Perfumery Co., Ltd., Tokyo, Japan.

N-substituted-p-menthane-3-carboxamides are fully described in U.S. Pat. No. 4,136,163 to Watson et al., issued Jan. 23, 1979 and incorporated herein by reference. The most preferred refrigerant of this class of compounds is N-ethyl-p-menthane-3-carboxamide, which is commercially available as WS-3 from Wilkinson Sword Limited.

Suitable acyclic carboxamides are fully described in U.S. Pat. No. 4,230,688 to Rowsell et al., issued Oct. 28, 1980 and incorporated herein by reference. The most preferred refrigerant of this class of compounds is N, 2,3-trimethyl-2-isopropylbutanamide, which is commercially available as WS-23 from Wilkinson Sword Limited.

A 1:75 mixture of 3-1-menthoxy-propane-1,2-diol, N-ethyl-p-menthane-3-carboxamide and N, 2,3-trimethyl-2-isopropylbutanamide in a ratio of 1:75 is preferred for use in the present invention. : 42.

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Fragrance carrier:

The fragrance-release complex used in the personal cleansing products of the present invention comprises 10 to 90% by weight, preferably 20 to 85% by weight, more preferably 30 to 60% by weight of the porous fragrance carrier. The fragrance carrier is typically present in the personal cleansing products of the present invention in an amount of from 0.01 to 10% by weight, preferably from 0.1 to 5% by weight, more preferably from 0.2 to 2% by weight of the substrate. Fragrance carriers improve fragrance delivery. By "improved fragrance delivery" is meant that the stability of the fragrance and the flowering of the fragrance in use are improved.

The fragrance carriers used in the personal cleansing products of the present invention comprise particles having a diameter of 0.001 to 50 µm, preferably 0.01 to 20 µm, more preferably 0.1 to 10 µmη. The term &quot; carrier particles &quot; as used herein means a particle that retains the odor (eg, perfume oil) in a dry (eg, clean) personal cleansing product and releases the entrapped odor when the product is wetted. Suitable carrier particles include, but are not limited to, cyclodextrins, silica (e.g., vaporized silica, colloidal silica, spheroidal silica, amorphous silica, precipitated silica and calcium silicate), starches (e.g., porous starch and agglomerated starch), polymethacrylate copolymers and mixtures thereof as described in US U.S. Patent No. 5,236,615 to Trinh et al., issued Aug. 17, 1993; U.S. Pat. No. 5,139,687 to Borgher, Sr. et al. et al., issued Aug. 18, 1992; U.S. Pat. No. 5,552,378 to Trinh et al., issued Sep. 3, 1996; U.S. Pat. No. 5,246,611 to Trinh, issued Sep. 21, 1993; U.S. Pat. U.S. Patent No. 5,185,155 to Behan et al., issued Feb. 9, 1993; U.S. Pat. U.S. Patent No. 5,112,612 to Garvey et al., issued May 12, 1992; U.S. Pat. U.S. Patent No. 5,292,533 to McMahon et al

March 8, 1994; U.S. Pat. U.S. Patent No. 5,466,460 to McMahon et al., issued Nov. 14, 1995; U.S. Pat. No. 5,376,287 to Borcher, U.S. Pat. et al., issued Dec. 27, 1994; all patents are incorporated herein by reference.

One type of inorganic carrier suitable for use in the present invention includes amorphous silica, precipitated silica, evaporated silica and aluminosilicates such as zeolite and alumina, with a pore volume of at least 0.1 ml / g containing pores with a diameter between 0.4 and 10 nm, which by their nature are hydrophilic. Preferably amorphous silica gel is used because of its high fat absorbance. Silica gel particles include Syloid® silica, such as: 72, 74, 221,234,235, 244, etc. Syloid® silica is available from W. R. Grace & Co., Davison Chemical Division, P.O. Box 2117, Baltimore, Maryland 21203. These particles have a surface area of 250-340 m / g; a pore volume of 1.1 to 1.7 ml / g and an average particle size of 2.5 to 6 µm. The vaporized silica particles have a base particle diameter of 0.007 .9999999999999999999999999999

9 · · 9,999,999 9

999 9999

99999 99 99 99 99 to 0.025 μιη and include Cab-O-SilR No: L-90, LM-30, LM-5, M-5, PTG, MS-55, HS-5 and EH-5. Cab-O-SilR silicas are available from Cabot Corp., P.O. Box 188, Tuscola, Illinois 61953. It is preferred that when perfume is added to the silica particles, only a minimal amount of other substances are present to maximize adsorption. It is particularly preferred that only a small amount, e.g. less than 10%, of organic matter, including waxes, is present.

Another type of inorganic carrier suitable for use in the present invention includes cyclodextrin. The term "cyclodextrin" (CD) as used herein includes any known cyclodextrins, such as unsubstituted cyclodextrins containing 6 to 12 glucose units, especially α-, β-, γ-cyclodextrins and mixtures thereof, and / or derivatives thereof, and / or mixtures thereof which are capable of forming inclusion complexes with perfume ingredients, α-, β- and γcyclodextrins may be obtained, inter alia, from the American Maize-Products Company (Amaizo), Com Processing Division, Hammond, Indiana; and Roquette Corporation, Gumee, Illinois. A large number of cyclodextrin derivatives are known. Representative derivatives are those described in U.S. Pat. No. 3,426,011, Parmerter et al., issued Feb. 4, 1969; 3,453,257, 3,453,258, 3,453,259 and 3,453,260, all of Parmerter et al., All issued July 1, 1969; No. 3,459,731, Gramera et al., Issued Sep. 5, 1969; No. 3,553,191, Parmerter et al., Issued Jan. 5, 1971; No. 3,565,887, Parmerter et al., Issued Feb. 23, 1971; 4,535,152, Szejtli et al., Issued Aug. 13, 1985; 4,616,008, Hirai et al., Issued Oct. 7, 1986; 4,638,058, Brandt et al., Issued Jan. 20, 1987; No. 4,746,734, Tsuchiyama et al., Issued May 24, 1988; and 4,678,598, Ogino et al., issued Jul. 7, 1987; all of said patents are incorporated by reference. Examples of cyclodextrin derivatives suitable for use in the present invention are methyl? -CD, hydroxyethyl? -CD and hydroxypropyl? -CD of various degrees of substitution available from Amaizo and Aldrich Chemical Company, Milwaukee, Wisconsin. Water-soluble derivatives are highly desirable.

The individual cyclodextrins may also be coupled together, eg, by multifunctional reagents, to form oligomers, co-oligomers, polymers, copolymers, etc. Examples of such materials are commercially available from Amaizo and Aldrich Chemical Company (β-CDZ epichlorohydrin copolymers).

It is also desirable to use mixtures of cyclodextrins and / or precursors to achieve a mixture of complexes. Such compositions can, for example, provide more than one fragrance profile by encapsulating a wide variety of perfume ingredients and / or preventing the formation of large crystals of said complexes. Mixtures of cyclodextrins may conveniently be obtained using intermediates from known procedures in the preparation of cyclodextrins, including those described in U.S. Pat. patents

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No. 3,425,910, to Armbruster et al., issued Feb. 4, 1969; No. 3,812,011 to Okada et al., Issued May 21, 1974; No. 4,317,881 to Yagi et al., Issued Mar. 2, 1982; No. 4,418,144 to Okada et al., Issued Nov. 29, 1983; and 4,738,923 to Ammeraal, issued April 19, 1988; all patents are incorporated herein by reference. Preferably, at least in the major portion of the cyclodextrins, α-cyclodextrin, β-cyclodextrin and / or γ-cyclodextrin, more preferably β-cyclodextrin. Some cyclodextrin mixtures are commercially available, for example, from Ensuiko Sugar Refining Company, Yokohama, Japan.

The fragrance carriers comprising the fragrance-releasing complexes of the present invention may be incorporated into personal cleansing products per se or may be encapsulated in, for example, waxy substances such as fatty acids.

Complex Creation:

The complexes of the present invention are formed by any method known in the art. Typically, the complexes are formed either by combining the perfume and cyclodextrins as a solution in suitable solvents, preferably in water, or in suspension or by mixing the ingredients in an environment of a suitable, preferably minimal amount of solvent, preferably water. Other polar solvents such as ethylene glycol, propylene glycol, diethylene glycol, triethylene glycol,

2-methoxyethanol, 2-ethoxyethanol, glycerin, dimethylsulfoxide, dimethylformamide, 1,2-propanediol, ethanol, methanol, isopropanol etc. and mixtures of said polar solvents and / or mixtures of said polar solvents with water may be used as complexing solvents . The use of these solvents in complex formation has been described in the article in Chemistry Letters by A. Harada and S. Takahashi, pp. 2089-2090 (1984), which is incorporated by reference. The suspension / mixing method is particularly desirable because less solvent is needed and therefore less solvent is needed. Suitable procedures are disclosed in the patents incorporated herein by reference. Further descriptions of complex formation may be found in J. L. Atwood, J. E. D. Davies & D. D. MacNichol (Ed.): Inclusion Compounds, Volume III, Academic Press (1984), particularly Chapter 11; J. L. Atwood and J. E. D. Davies (Ed.): Proceedings of the Second International Symposium of Cyclodextrins, Tokyo, Japan (July, 1984); Cyclodextrin Technology, J. Szejtli, Kluwer Academic Publishers (1988); all publications are incorporated by reference.

Scent-releasing complexes generally have a 1: 1 molar ratio of odor to carrier (e.g., cyclodextrins). However, the molar ratio may be either higher or lower depending on the molecule size of the active compound and the identity of the cyclodextrin compound. The molar ratio of this to this to this to this to this to this can be readily determined by forming a saturated carrier solution and adding a fragrance to form a complex. The complex will usually precipitate immediately. If not, the complex can usually be precipitated by addition of an electrolyte, pH change, cooling, etc. The complex is then analyzed to determine the odor to carrier ratio.

The actual complexes are indicated by the size of the cavity in the carrier and the size of the odor molecule. Although in a conventional complex there is one fragrance molecule in one carrier molecule, the complexes may be comprised of one fragrance molecule and two carrier molecules, where the fragrance molecule is larger and contains two parts that may fit into the carrier. Highly desirable complexes can be formed using carrier mixtures of varying sizes because some odors are usually mixtures of substances that vary widely in size. It is usually desirable that at least most of the material is α-, βa / or γ-cyclodextrin, more preferably β-cyclodextrin.

Methods of making carriers and complexes are described in U.S. Pat. U.S. Patent Nos. 3,812,011, Okada, Tsuyama, and Tsuyama, issued May 21, 1974; No. 4,317,881, Yagi, Kouno and Inui, issued

March 2, 1982; 4,418,144, Okada, Matsuzawa, Uezima, Nakakuki and Horikoshi, issued November 29, 1983; No. 4,378,923, Ammeraal, issued Apr. 19, 1988; all of said patents are incorporated herein by reference. Substances obtained by any of these variations are suitable for the purpose of the present invention. It is also convenient to first isolate the inclusion complexes directly from the reaction mixture by crystallization.

The continuous operation usually involves the use of supersaturated solutions and / or suspension / mixing and / or temperature manipulation, e.g., heating and then also cooling, lyophilization, etc. The complexes may or may not be dried depending on the next step of the preparation process of the desired composition. The combination of the complex / solvent (water) mixture with some carriers, eg polyalkylene glycol, avoids the need for a drying step. Thus, for improved handling and ease of incorporation into a subsequent composition, it is desirable to use a wet, undried suspension of the complex with the liquid carrier. Generally, as few steps as possible are used to avoid loss of the active ingredient and excessive manufacturing costs.

Covering the fragrance-releasing complex:

It is preferred to coat the fragrance-releasing complex with a coating. Preferred coating materials include both water-insoluble and water-soluble substances. Water-soluble substances are preferable because they allow rapid release of odor in the presence of an aqueous solution, e.g. water. Suitable coating materials and techniques are described in U.S. Pat. U.S. Patent No. 5,236,615 to Trinh et al., issued Aug. 17, 1993; U.S. Pat. No. 5,139,687 to Borgher, Sr. et al. et al., issued Aug. 18, 2003.

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1992; U.S. Pat. No. 5,552,378 to Trinh et al., issued Sep. 3, 1996; U.S. Pat. No. 5,246,611 to Trinh, issued Sep. 21, 1993; U.S. Pat. U.S. Patent No. 5,185,155 to Behan et al., issued Feb. 9, 1993; U.S. Pat. U.S. Patent No. 5,112,612 to Garvey et al., issued May 12, 1992; U.S. Pat. U.S. Patent No. 5,292,533 to McMahon et al., issued Mar. 8, 1994; U.S. Pat. U.S. Patent No. 5,466,460 to McMahon et al., issued Nov. 14, 1995; U.S. Pat. No. 5,376,287 to Borcher, U.S. Pat. et al., issued Dec. 27, 1994; all of said patents are incorporated herein by reference in their entirety.

Unrestricted examples of suitable water-insoluble materials are typically selected from waxy materials such as paraffin waxes, microcrystalline waxes, animal waxes, vegetable waxes, saturated fatty acids and C 12 -C 40 fatty alcohols in their alkyl chains, and fatty esters, such as fatty acid triglycerides, sorbitan (polyoxyethylene sorbitol) esters with fatty acids and fatty alcohol esters, or from water-insoluble polymers. Certain suitable typical waxy coating agents include lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid and behenic acid, stearyl alcohol and behenyl alcohol, microcrystalline wax, beeswax, spermacetate wax, candelilla wax, trisearate sorbitan, sorbitan tristearate, sorbitan tristearate. and octacosan. A preferred waxy substance is coconut oil fatty acids.

Non-limiting examples of suitable water-soluble substances without limitation include polyalkylene glycols, water-soluble polymers, glycerol esters and polyols.

Particularly preferred are polyalkylene glycols which are liquid or molten at temperatures below 100 ° C, especially polyalkylene glycol materials such as:

A) Polyalkylene glycols and / or mixed polyalkylene glycols having a mean molecular weight (MW) of 400 to 20000, preferably 600 to 10000. Examples include:

Polyethylene glycols preferably having relative molecular weights of 1000 to 400000, more preferably 4400 to 400000. Suitable examples of polyethylene glycols ("PEG") without limitation include PEG 600, PEG 1450, PEG 3350, PEG 4600 and PEG 8000 as indicated in the CTFA Cosmetic Ingredient Handbook , second edition (1992);

Polypropylene glycols preferably having relative molecular weights of 600 to 4000;

Polytetramethylene glycols preferably having relative molecular weights of 1000 to 1000

10000;

• • •

Mixed polyalkylene glycols such as poly (ethylene oxide-propylene oxide). Examples: Medium MW 1100, E / P ratio 0.15: 1; mean MW 3440, E / P ratio 0.33: 1; mean MW 2920, E / P ratio 0.8: 1; mean MW 13333, 3: 1 E / P ratio; mean MW 8750, 5: 1 E / P ratio; and

Mixed polyalkylene glycol block copolymers such as HO- [CH ₂ CH ₂ O] _x - [CH ₂ CH (CH ₃ ) O] _y - [CH ₂ CH ₂ O] _x -H and / or

HO- [CH ₂ CH (CH ₃ ) O] y - [CH ₂ CH ₂ O] _x - [CH ₂ CH (CH ₃ ) O] _y -H, where the sum of y is 15 to 70 and the sum of x to sum y is 1:10 to 11:10, preferably 1: 2 to 1: 1. Examples include fabrics manufactured by BASF Corporation and sold under the trade names Pluronic® and Pluronic RR surfactants.

B) C 1 -C ₂₂ , preferably C 1 -C 4 alkylated polyalkylene glycols [polyalkylene glycol mono- and dialkyl ethers], RO- (R ² O) n H and / or RO- (R ² O) n R, each R being methyl, ethyl, propyl or butyl; each R is a C ₂ -C 4 alkylene group and _n is in the range of from 1 to 200, with the percentage of polyalkylene glycol preferably being greater than 50%. Specific examples include:

RO- [CH ₂ CH (CH 3) O] _m -H, each R being methyl, ethyl, propyl or butyl and _m is 1 to 200 (MW from 90 to 20000);

RO- [CH ₂ CH ₂ O] _n -H, each R being methyl, ethyl, propyl or butyl, preferably a methyl group and n is 2 to 200 (MW from 120 to 9000), preferably 15 to 150 (MW from 700 to 6700), more preferably 15 to 100 (MW from 700 to 4500); or

RO- [CH ₂ CH ₂ O] _n -R, with each R being methyl, ethyl, propyl or butyl, and n is 2 to 200 (MW from 134 to 9000), preferably 15 to 150 (MW from 700 to 6700), more preferably 15 to 100 (MW from 700 to 4500).

C) Polyalkoxylated materials having an average molecular weight of 200 to 20000 and a polyalkoxylated percentage of 50 to 99% by weight. Specific examples include: Tetronic ® and Tetronic R ®; and Varstat 66®. Tetronic® and Tetronic® are block copolymer surfactants manufactured by BASF Corporation. Tetronic® surfactants have the general formula:

• ·

ch ₃ CH, 1 H— (OCH ₂ CH ₂ ) x— - (OCHCH ₂ ) y (CH ₂ CHO) γ- - (CH ₂ CH ₂ O) x -H \ / N- -CHyCH2N / ^{2 2} \ H— (OCH ₂ CH ₂ ) x - - (OCHCH ₂ ) y (CH ₂ CHO) γ- - (CH ₂ CH ₂ O) x -H ch ₃ ch ₃

and Tetronic R® surfactants have the general formula:

θ ^Η 3

H- _{(OCH2 CH2)} x- (OCHCH ₂₎ Y \

H- (OCH ₂ CH ₂₎ x (OCHCH ₂₎ y '

CH,

N-CH ₂ CH _R CH ₃ N (CH ₂ CHO) y (CH ₂ CH ₂ O) x H (CH ₂ CHO) y (CH ₂ CH ₂ O) x H

CH ₃ wherein the sum of y is from 8 to 120 and the ratio of the sum of x to the sum of y is 1:10 to 11:10, preferably 1: 2 to 1: 1.

Varstat 66®, marketed by Sherex Chemical Company, has the general formula [H- (OCH ₂ CH ₂ ) p N ⁺ (C ₂ H ₅ ) (R ³ ) - (CH ₂ CH ₂ O) q H] C ₂ H ₅ SO 4 ', R ³ being C 12 -C , ₈ alkyl or alkenyl group, and in that p + q is preferably 10 to 30 Surfynol 465®, sold by Air Products and Chemicals, Inc., the ethylene oxide adduct of 2,4,7,9-tetramethyl-5-decyne -4,7-diol of formula

CH, CH, CH, CH,

I ³ I ³ I ³ I ³

CH-CH-CH-CHC-C-C-CH = _CH-CH3

Ho - (CH ₂ CH ₂ O) r - (OCH ₂ CH ₂ ) s -OH, with r + s being 8. The percentage of polyethylene oxide in Surfynol 465 ® is 65% by weight. Coating agents may contain other parts as long as they do not disturb the complex too much.

The weight ratio of the complex to the coating substance is 1: 1 to 1: 5, preferably 2: 3 to 1: 3. The level of coating agent should be relatively high such that the complex can be carried and the mixture of the complex and the coating agent can be relatively fluid when the carrier is in a liquid state.

Preferred coatings are those that are solid at room temperature, but start to melt or liquid at temperatures below 100 ° C, preferably below 80 ° C.

Specific examples are:

Polyethylene glycols with an average MW of 600 to 20,000; polytetramethylene glycols with an average MW of 1000 to 10000 and polyethylene glycol methyl ether with an average MW of 600 to 20000.

The complexes disclosed herein are preferably formed by the process described above, wherein the cyclodextrin is mixed with the scent, preferably perfume, in a limited amount of water, then the water is dried in air or lyophilized as described below. The complex is then mixed with the liquid coating agent, or preferably with the molten initially solid coating agent at a weight ratio of complex to coating agent of 1: 1 to 1: 5 to form a pumpable liquid complex composition for further processing.

A preferred composition and process comprises applying molten mixtures of (a) a dry odor / carrier complex and (b) an initially solid hydrophilic polyethylene glycol substance to the surface of the solid substrate, then solidifying the droplets on said surface. Said droplets dissolve readily in water or other aqueous media, such as body fluids (eg sweat, saliva, urine, menstruation, etc.), releasing the active ingredient.

Said hydrophilic polyethylene glycol compounds have the general formula RO- (CH 2 CH 2 O) _n -R, wherein each R is hydrogen, a C 1 -C 22 alkyl or alkenyl group, or a mixture thereof, and n is 13 to 450 (mean MW 600 to 20000) with a percentage of polyethylene glycol preferably more than 50% by weight. Preferred R groups include hydrogen, C 1 -C 4 alkyl groups, or mixtures thereof. More preferred polyethylene glycol materials are hydrophilic polyethylene glycols, polyethylene glycol methyl ethers or mixtures thereof with a mean MW of 600 to 20000 (n is 13 to 450), preferably 1000 to 9000 (n is 20 to 200), more preferably 1400 to 4500 (n is 30 to 100). The weight ratio of the complex to the polyethylene glycol substance is 1: 1 to 1: 5, preferably 1: 2 to 1: 4.

Other preferred compositions and processes include spray crystallization of molten mixtures of (a) dry odor / carrier complex and (b) originally solid hydrophilic polyethylene glycol materials as described above, eg, by spray drying, marumarizing, etc., into solid particles of 10 to 1000 pm, preferably 50 to 600 pm. Said solid particles may then be used, for example, either (a) attached to the solid surface of the substrate by distributing the particles onto said substrate, melting the particles and then solidifying again to join the particles to said surface, or (b) placed in a porous water-insoluble bag or sheath. . These products will readily release the active ingredient when treated with water or aqueous compositions.

Other preferred compositions and processes include complexing in the presence of a limited amount of solvent, e.g., water, then, without removing the solvent (water), the initially solid polyethylene glycol substance in molten form is added to the complex / water to form a pumpable mixture. which can be directly used to form solid compositions by mixing molten substances which would not normally be compatible with the complex / water mixture itself.

In the above composition and process which utilizes a coating agent / solvent mixture to suspend the complex, the weight ratio of coating agent to complex is typically in the range of 0.5 to 3, preferably 0.6 to 2, and more preferably 0.75 to 1. The weight ratio of solvent to coating agent to the complex is typically in the range of 1: 1 to 5: 1, preferably 1: 1 to 3: 1. Preferably, the coating agent is more than a solvent, the solvent is water, and / or the coating agent is a polyethylene glycol or an alkylated polyethylene glycol having a relative molecular weight of preferably 600 to 20000, and more preferably 1000 to 9000.

A process using a coating / solvent mixture is also suitable, since removal of the solvent adds an additional step or steps, and may result in the loss of an active ingredient, e.g., a perfume.

The polyalkylene glycol materials preferably have no hydrophobic end group that will displace the active ingredient from the cyclodextrin. Polyalkylene glycols may contain additional monomers in their chains, but the level of other monomers should be low to prevent the active ingredient from being displaced from the cyclodextrin complex. Surprisingly, the complexes disperse successfully in the above-mentioned carriers (solvents), but are not destroyed, for example, by extruding the complexed active ingredient, e.g., perfume, with the carrier. Solvents such as ethylene glycol, propylene glycol, ethanol, glycerin and molten sorbitol may form pumpable suspensions, but will at least partially dissolve the complexes and thereby release the active ingredient.

Once the complexes are dispersed in the coating substance, the complexes can be applied directly to the substrates by means of a suspension in the carrier to achieve good distribution. For example, the flavor / carrier in the coating material may be sprayed and / or dispersed on a suitable surface. A propellant or compressed air may be used to form the coating substance / complex dispersion. The complexes may release some active ingredients (perfumes) when exposed to water in the atmosphere, but surprisingly a significant amount of the active ingredient, even the volatile prafeme active ingredient, remains in the complex attached to the surface.

• 9 ····· 99 ·· «·

When a coating substance is used to coat and / or protect and / or attach the complex to the substrate, the carrier is preferably solid at normal temperatures. Polypropylene glycols are not solids, so they will normally be used only as part of the coating material mixture. Whether a particular carrier or mixture of carriers is solid can be determined by inspection.

Examples of polymeric materials that can be used herein for coating particles are cellulose ethers such as ethyl, propyl or butyl cellulose; cellulose esters such as cellulose acetate, cellulose propionate, cellulose butyrate or cellulose acetate butyrate; polyalkylene glycols such as ethylene glycol, propylene glycol, tetramethylene glycol; urea-formaldehyde resins, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, polyethylene, polypropylene, polyacrylates, polymethacrylates, polymethylmethacrylates and nylon. These materials and their analogues are described in more detail in any conventional handbook of synthetic organic plastics, e.g., Modern Plastics Encyclopaedia Volume, Volume 62, No. 10A (1985-1986), pages 768-787, published by McGraw-Hill, New. York, NY (October 1985), which is incorporated herein by reference. A preferred polymeric substance is ethylcellulose. Polymeric coating materials can be softened by known plasticizers, such as phthalates, adipates and sebacates, polyols (e.g. ethylene glycol), tricresyl phosphate, castor oil, and camphor. These polymer coatings are advantageous for their higher protection.

The coating, when present, usually constitutes 2 to 50% by weight, preferably 20 to 40% by weight, of the fragrance-releasing complex.

The coating material may comprise a mixture of water-soluble coating materials, water-insoluble coating materials and polymeric coating materials. In such compositions, the waxy coating will typically comprise 10 to 90% by weight of the composition and the polymeric material will be 10 to 90% by weight.

The function of the coating that surrounds the fragrance-releasing complex is to provide further improved stability, as well as to provide dual fragrance delivery where different fragrances can be impregnated in different complexes.

Filling fragrance into the carrier:

At least a portion of the fragrance used in the personal cleansing products of the present invention is impregnated into the fragrance carrier described above. To impregnate the fragrance into the fragrance carrier, the fragrance and the carrier are mixed together to form a homogeneous mixture.

Pure fragrances:

• this • this • this • this «this» ···

In addition to the fragrances impregnated in the fragrance carrier, the personal cleansing article of the present invention may optionally contain fragrances present in their pure form (eg, not impregnated in the carrier). Incorporating pure fragrance into the personal cleansing products of the present invention may contribute to the unique odor effect of the product. For example, a personal cleansing product containing both a carrier impregnated and a clean fragrance can 1) provide a dual odor effect (e.g., may exhibit different odors for a dry (clean) product and for a product in use) or 2) optimize the odor effect for both pure product, as well as the product in use.

Fragrances that can be used as pure fragrances for the personal cleansing products of the present invention are, as well as fragrances incorporated into the fragrance-releasing complex described above. The pure odor is typically present in an amount of 0.01 to 10% by weight, preferably 0.01 to 2% by weight, more preferably 0.1 to 2% by weight of the substrate. The total fragrance (e.g., pure fragrance and fragrance incorporated into the fragrance-releasing complex) is typically present in the products of the present invention in an amount of 0.01 to 10% by weight, preferably 0.1 to 5% by weight, more preferably 0.4 to 2% by weight. .

IV. Modifying folder

The products of the present invention may preferably contain a conditioning component which is useful to provide conditioning benefits to the skin or hair during use of the product. The conditioning component comprises 0.05 to 99% by weight, preferably 0.1 to 50% by weight, and more preferably 1 to 25% by weight, of said water-insoluble substrate.

The conditioning component of the present invention may comprise: a water-soluble conditioning agent; a fat-soluble conditioning agent; emulsion conditioning; a lipid-hardening agent or any combination or variation of the four components. The fat soluble modifying agent is selected from one or more fat soluble modifying agents such that the weighted arithmetic mean of the solubility parameter of the fat soluble modifying agents is less than or equal to 10.5. The water-soluble conditioning agent is selected from one or more water-soluble conditioning agents such that the weighted arithmetic mean of the solubility parameter of the water-soluble conditioning agents is less than or equal to 10.5. Based on the mathematical definition of solubility parameters, it is recognized that, for example, it is possible to achieve a weighted arithmetic mean of the solubility parameter, i.e. less than or equal to 10.5, for a fat-soluble modifying agent containing two or more compounds. than 10.5. Conversely, it is possible to achieve a corresponding weighted arithmetic mean solubility parameter, i.e. greater than 10.5, for a water-soluble modifying agent containing two or more compounds when one of the compounds, the individual solubility parameter is less than or equal to 10.5.

Solubility parameters are well known to chemists and are regularly used as an indicator to determine the compatibility and solubility of substances in the formulation process.

The solubility parameter of a chemical compound, δ, is defined as the square root of the cohesion energy energy density of that compound. Typically, the solubility parameter of a compound is calculated from the tabulated values of the additive heat dissipation of the groups and the molar volume of the components of the compound according to the equation:

1/2

Em i where Σί E, is the sum of additive contributions of the heat of discharge of groups and Σί m, is the sum of additive contributions of molar volume of groups.

The standard tabulated values of additive contributions of the heat and molar volume groups for a large number of atoms and atomic groups are collected in A.F.M. Barton's Handbook of Solubility Parameters, CRC Press, Chapter 6, Table 3, pp. 64-66 (1985), which is incorporated herein by reference in its entirety. The above solubility parameter equation is described in R.F. Fedors' A Method for Estimating Both Solubility Parameters and Molar Volumes of Liquids, Polymer Engineering and Science, Volume 14, No. 2, pp. 147-154 (February 1974), which is incorporated herein by reference in its entirety.

Solubility parameters are governed by the Mixtures Act so that the solubility parameter of a mixture of substances is given by the weighted arithmetic mean (ie, the weighted average value) of the solubility parameters of each component of such a mixture. See. Handbook of Chemistry and Physics, 57th Edition, CRC Press, pp. C-726 (1976-1977), which is incorporated herein by reference in its entirety.

Chemists typically report and use solubility parameters in units (cal / cm ³ ) ^1/2 . Tabulated values of additive heat input groups in the Handbook of Solubility Parameters are given in kJ / mol. These tabulated heat values are, however, readily convertible to cal / mol using the following known relationships:

J / mol = 0.239006 cal / mol and 1000J = 1 kJ

• 9 9 9 • 9 9 9

99

99

9 9 ·

9 viz. A.J. Gordon et al., The Chemist's Companion, John Wiley &amp; Sons, pp. 456-463 (1972), which is incorporated herein by reference in its entirety.

Solubility parameters are also tabulated for a large number of chemicals. Tabulations of these solubility parameters are found in the Handbook of Solubility Parameters cited above. See. also the publication "Solubility Effects In Product, Package, Penetration, And Preservation", C.D. Vaughan, Cosmetics and Toiletries, Volume 103, October 1988, pp. 47-69, which is incorporated herein by reference in its entirety.

A. Fat Soluble Treating Agents

Non-limiting examples of treatment agents useful as fat-soluble treatment agents include those selected from the group consisting of mineral oil, petrolatum, C7-C40 branched hydrocarbons, C1-C30 carboxylic acid esters and C1-C30 alcohols, C2-C30 dicarboxylic acid esters and C1-C30 alcohols, C1-C30 carboxylic acid monoglycerides, C1-C30 carboxylic acid diglycerides, C1-C30 carboxylic acid triglycerides, C1-C30 carboxylic acid and ethylene glycol monoesters, C1-C30 carboxylic acid and ethylene glycol diesters, C1-C30 carboxylic acid monoesters and propylene glycol, diesters of C 1 -C 30 carboxylic acids and propylene glycol, monoesters and polyesters of C 1 -C ₃₀ carboxylic acids and carbohydrates, polydialkylsiloxanes, polydiarylsiloxanes, polyalkylarylsiloxanes, cyclomethicones having 3 to 9 silicon atoms, vegetable oils, polypropylene glycol C20 alkyl ethers, di C8-C30 alkyl ethers and mixtures thereof.

Mineral oil, also known as liquid petrolatum, is a mixture of liquid hydrocarbons derived from petroleum. See. The Merck Index, 10th edition, password 7048, p. 1033 (1983) and International Cosmetic Ingredient Dictionary, 5th edition, volume 1, p. 415-417 (1993), which are incorporated herein by reference in their entirety.

Petrolatum, also known as petrolatum, is a colloidal system of branched solid hydrocarbons and high boiling liquid hydrocarbons in which most liquid hydrocarbons are held within micelles. See. The Merck Index, 10th Edition, Entry 7047, p. 1033 (1983); Schindler, Drug. Cosmet. Indian. 89, 36-37, 76, 78-80, 82 (1961) and the International Cosmetic Ingredient Dictionary, 5th Edition, Volume 1, p. 537 (1993), which are incorporated herein by reference in their entirety.

Unbranched and branched hydrocarbons having 7 to 40 carbon atoms are also useful herein. Unrestricted examples of these hydrocarbon substances include dodecane, isodecane, squalane, 9 9 4 · 4 · 4 4 · 4 · 4 · 4 · 4 · 4 · 4 Cholesterol, hydrogenated polyisobutylene, docosane (i.e., C22 hydrocarbon), hexadecane, isohexadecane (a commercially available hydrocarbon sold as Permethyl® 101A by Presperse, South Plainfield, NJ). Also useful are C7-C40 isoparaffins, which are branched C7-C40 hydrocarbons.

Also useful are esters of C1-C30 carboxylic acids and C1-C30 alcohols, esters of C2-C30 dicarboxylic acids and C1-C30 alcohols including unbranched and branched compounds as well as aromatic derivatives. Also useful are esters such as e.g. monoglycerides of C1-C30 carboxylic acids, diglycerides of C1-C30 carboxylic acids, triglycerides of C1-C30 carboxylic acids, monoesters of C1-C30 carboxylic acids, and ethylene glycol diesters of C _r C ₃ of carboxylic acids, and glycol monoesters C1-C30 carboxylic acids and propylene glycol, diesters of C1-C30 carboxylic acids and propylene glycol. Included are unbranched, branched and aromatic carboxylic acids. Propoxylated and ethoxylated derivatives thereof are also useful. Unlimited examples include diisopropyl sebacate, diisopropyl adipate, isopropyl myristate, isopropyl palmitate, myristyl propionate, ethylene glycol distearate, 2-ethylhexyl palmitate, isodecyl neopentanoate, di-2-ethylhexyl maleate, cetyl palmitate, myristyl myristate, stearyl stearate, cetyl stearate, behenyl behenate, dioctyl maleat, dioctyl sebacate, diisopropyl adipate, cetyl octanoate, diisopropyl-dilinoleate, caprylic and capric acid triglyceride, PEG-6 caprylic and capric acid triglyceride Caprylic and capric acid triglyceride and mixtures thereof.

Various C1-C30 monoesters and polyesters of glycerin and related substances are also useful. These esters are derived from glycerin and one or more carboxylic acid moieties. Depending on the acid and glycerin component, these esters may be either liquid or solid at room temperature. Unlimited examples of solid esters limit: glyceryl tribehenate, glyceryl stearate, glyceryl palmitate, glyceryl distearate, glyceryl dipalmitate.

Various C1-C30 monoesters and polyesters of carbohydrates and related substances are also useful. These esters are derived from a carbohydrate or polyol moiety and one or more carboxylic acid moieties. Depending on the acid and carbohydrate component, these esters may be either liquid or solid at room temperature. Examples of liquid esters include: glucose tetraoleate, glucose and fatty acid (unsaturated) tetraesters of soybean oil, tetraesters of mannose and mixed soybean oil fatty acids, galactose and oleic acid tetraesters, arabinose and linoleic acid tetraesters, tetralinoleate xylose, pentaoleate sorctose , sorbitol and unsaturated fatty acid hexaesters from soybean oil, xylitol pentaoleate, sucrose tetraoleate, sucrose pentaoleate, sucrose hexaoleate, heptaoleate · · · * * · ··· · · ··· · Sucrose, octaoleat sucrose and mixtures thereof. Examples of solid esters include: sorbitol hexaester, wherein the carboxylic acid moieties are palmitoleate and arachidate in a molar ratio of 1: 2; a raffinose octaester, wherein the carboxylic acid moieties are linoleate and behenate in a molar ratio of 1: 3; maltose heptaester, wherein the esterifying carboxylic acid moieties are sunflower seed and lignocerate fatty acids in a molar ratio of 3: 4; an octaester of sucrose in which the esterifying carboxylic acid moieties are oleate and behenate in a molar ratio of 2: 6; an octaester of sucrose in which the esterifying moieties of the carboxylic acid are laurate, linoleate and behenate in a molar ratio of 1: 3: 4. A preferred solid is sucrose polyester, wherein the degree of esterification is 7-8, and wherein the carboxylic acid moieties are C 18 mono- and / or di-unsaturated fatty acids and behenic acid in a molar ratio of unsaturated: behenic 1: 7 to 3: 5. A particularly preferred solid carbohydrate polyester is the octaester of sucrose in which there are 7 parts of behenic acid and 1 part of oleic acid in one molecule. Other substances include sucrose and fatty acid esters of cottonseed oil or soybean oil. These esters are further described in U.S. Pat. No. 2,831,854; No. 4,005,196 to Jandacek, issued Jan. 25, 1977; U.S. Pat. No. 4,005,195 to Jandacek, issued Jan. 25, 1977; U.S. Pat. No. 5,306,516 to Letton et al., issued Apr. 26, 1994; U.S. Pat. U.S. Patent No. 5,306,515 to Letton et al., issued April 26, 1994; U.S. Pat. No. 5,305,514 to Letton et al., issued Apr. 26, 1994; U.S. Pat. U.S. Patent No. 4,797,300 to Jandacek et al., issued Jan. 10, 1989; U.S. Pat. No. 3,963,699 to Rizzi et al., issued June 15, 1976; U.S. Pat. No. 4,518,772 to Volpenhein, issued May 21, 1985; No. 4,517,360 to Volpenhein, issued May 21, 1985, all of which are incorporated herein by reference.

Nonvolatile silicones such as polydialkylsiloxanes, polydiarylsiloxanes and polyalkylarylsiloxanes are also useful oils. These silicones are disclosed in U.S. Patent No. 5,069,897 to Orra, issued December 3, 1991, which is incorporated herein by reference in its entirety. The polyalkylsiloxanes correspond to the general chemical formula R 3 SiO [R 2 SiO] _x SiR 3, wherein R is an alkyl group (preferably R is methyl or ethyl, more preferably methyl) and x is an integer up to 500 selected to achieve the desired relative molecular weight. Commercially available polyalkylsiloxanes include polydimethylsiloxanes, also known as dimethicones, examples of which include, but are not limited to, the Vicasil® series sold by General Electric Company and the Dow Corning® 200 series sold by Dow Corning Corporation. Typical examples of polydimethylsiloxanes useful herein include Dow Corning® 225 fluid having a viscosity of 1.10 ^-5 M ² / s and a boiling point greater than 200 ° C, and Dow Corning 200 fluid having a viscosity of 5.10 ^'5 and 3,5.10 ^-4 1,25.10 ^-2 m ² / s and boiling point greater than 200 ° C. Also useful are substances such as trimethylsiloxysilicate, which is a polymeric compound corresponding to the general chemical formula [(CH 2) 3 SiO 1/2] _x [SiO 2] y, where x is an integer from 1 to 500 and y is an integer from 1 to 500. Commercially available trimethylsiloxysilicate is sold as a mixture with dimethicone under the name Dow Corning® 593 liquid. Also useful are dimethiconols, which are hydroxy-terminated dimethyl silicones. These may be represented by the general chemical formulas R 5 Si SiO 2 SiO 2 SiO 2 and HOR 2 SiO 2 R 2 SiO 2 Si Si 2 O 2, wherein R is an alkyl group (preferably R is methyl or ethyl, more preferably methyl) and x is an integer up to 500 selected to achieve the desired relative molecular weight. Commercially available dimethiconols are typically sold as mixtures with dimethicone or cyclomethicone (eg, Dow Corning® 1401, 1402 and 1403 fluids). Also useful herein are polyalkylarylsiloxanes, with preference being given to polymethylphenylsiloxanes having viscosities of 1.5.10 to 6.5.10 m / s at 25 ° C. These substances are available, for example, as SF 1075 methylphenyl fluid (sold by General Electric Company) and 556 Cosmetic Grade phenyltrimethicone fluid (sold by Dow Corning Corporation).

Also useful herein are vegetable oils and hydrogenated vegetable oils. Examples of vegetable oils and hydrogenated vegetable oils include safflower oil, castor oil, coconut oil, cottonseed oil, Brevoortia tyrannus herring oil, palm kernel oil, palm oil, peanut oil, soybean oil, rapeseed oil, linseed oil, rice oil , pine oil, sesame oil, sunflower seed oil, hydrogenated safflower oil, hydrogenated castor oil, hydrogenated coconut oil, hydrogenated cottonseed oil, hydrogenated Brevoortia tyrannus oil, hydrogenated palm kernel oil, hydrogenated palm oil, hydrogenated peanut oil , hydrogenated soybean oil, hydrogenated rapeseed oil, hydrogenated linseed oil, hydrogenated rice oil, hydrogenated sesame oil, hydrogenated sunflower seed oil and mixtures thereof.

Also useful are C4-C20 alkyl ethers of polypropylene glycols, esters of C1-C20 carboxylic acids and polypropylene glycols, and di-C8-C50-alkyl ethers. Non-limiting examples of such agents include PPG-14 butyl ether, PPG-15 stearyl ether, dioctyl ether, dodecyloctyl ether, and mixtures thereof.

B. Water-soluble conditioning agents

Non-limiting examples of treatment agents suitable as water-soluble treatment agents include those selected from the group consisting of polyhydric alcohols, polypropylene glycols, polyethylene glycols, ureas, pyrrolidone carboxylic acids, and this is this. This to this ethoxylated and / or propoxylated C ₃ -C ₆ diols and trioles, C _{2 -C6} α-hydroxycarboxylic acids, ethoxylated and / or propoxylated carbohydrates, polyacrylic acid copolymers, carbohydrates having up to 12 carbon atoms, carbohydrate alcohols having up to 12 carbon atoms, and mixtures thereof. Typical examples useful in. water-soluble conditioning agents include substances such as urea; guanidine; glycolic acid and its salts (eg, ammonium and quaternary alkylammonium); lactic acid and its salts (eg, ammonium and quaternary alkylammonium); sucrose, fructose, glucose, erythros, erythritol, sorbitol, mannitol, glycerol, hexanetriol, propylene glycol, butylene glycol, hexylene glycol and others; polyethylene glycols such as PEG-2, PEG-3, PEG-30, PEG-50, polypropylene glycols such as PPG-9, PPG-12, PPG-15, PPG-17, PPG-20, PPG-26, PPG-30; PPG-34; alkoxylated glucose; hyaluronic acid and mixtures thereof. Also useful are substances such as aloe vera in various forms (eg aloe vera gel), chitin, starch grafted sodium polyacrylates such as Sanwet (RTM) IM-1000, IM-1500 and IM-2500 (available from Celanese Superabsorbent Materials (Portsmouth, VA); lactamide monoethanolamine; acetamide monoethanolamine and mixtures thereof. Also useful are propoxylated glycerols, such as those described in U.S. Patent No. 4,976,953 to Orra et al., Issued December 11, 1990, which is incorporated herein by reference in its entirety.

C. Treatment emulsions

The conditioning component of the present invention may also contain a conditioning emulsion that is suitable to provide conditioning benefits to the skin or hair during use of the article. The term "emulsifying agent" as used herein means a combination of an internal phase comprising a water-soluble modifying agent that is shrouded in an external phase comprising a fat-soluble agent. In preferred embodiments, the modifying emulsion would further comprise an emulsifier. The conditioning emulsions comprise 0.25 to 150% by weight, preferably 0.5 to 100% by weight and more preferably 1 to 50% by weight of the total weight of said water-insoluble substrate. By treating emulsion is meant a combination of an inner phase comprising a water-soluble conditioning agent which is enveloped in an outer phase comprising a fat-soluble agent. In preferred embodiments, the conditioning emulsion would further comprise an emulsifier.

The conditioning emulsion comprises (i) an internal phase comprising a water-soluble conditioning agent as described above, and (ii) an external phase comprising a fat-soluble agent (e.g., conditioning and non-conditioning agents) as described above and hereinafter. In other embodiments, the conditioning emulsion further comprises an emulsifier capable of forming an emulsion of said internal and external phases. Although an emulsifier capable of forming internal and external phase emulsions is preferred in the present invention, 99 99 99

99

9 9

9 9 9

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Thus, it is recognized in the prior art skin care formulations that the water-soluble conditioning agent may be surrounded by a fat-soluble agent without emulsifier. As long as the water-soluble conditioning agent is surrounded by a fat-soluble agent, thereby preventing its elution during the purification process, the composition would be within the scope of the present invention.

The inner phase may optionally contain other water-soluble or dispersible substances which do not adversely affect the stability of the emulsion-modifying agent. One such substance is a water-soluble electrolyte. The dissolved electrolyte minimizes the tendency of the substances present in the lipid phase to dissolve also in the aqueous phase. Any electrolyte capable of imparting ionic strength to the internal phase can be used. Suitable electrolytes include water-soluble mono, di or trivalent inorganic salts, such as water-soluble halides, such as alkali and alkaline earth metal chlorides, nitrates and sulfates. Examples of such electrolytes include sodium chloride, calcium chloride, sodium sulfate, magnesium sulfate, and sodium bicarbonate. The electrolyte will typically be present in concentrations ranging from 1 to 20% by weight of the internal phase.

Other water-soluble or dispersible substances that may be present in the internal phase include thickeners and viscosity modifiers. Suitable thickeners and viscosity modifiers include water-soluble polyacrylic and hydrophobically modified polyacrylic resins such as Carbopol and Pemulen, starches such as corn starch, potato starch, maniotic starch, gums such as guar gum, acacia, cellulose ethers such as hydroxypropylcellulose, hydroxyethylcellulose, carboxymethylcellulose and others. These thickeners and viscosity modifiers may typically be present in concentrations ranging from 0.05 to 0.5% by weight of the internal phase.

Other water-soluble or dispersible substances that may be present in the internal aqueous phase include polycationic polymers to provide steric stabilization at the water-lipid interface and non-ionic polymers that also stabilize the water-lipid emulsion. Suitable polycationic polymers include Reten 201, Kymene 557H® and Acco 7112. Suitable non-ionic polymers include polyethylene glycols (PEG) such as Carbowax. These polycationic and non-ionic polymers will typically be present at a concentration ranging from 0.1 to 1.0% by weight of the internal phase.

Preferred embodiments of the present invention which contain an emulsion modifier include an emulsifier capable of forming an emulsion of internal and external phases. In the emulsion of the present invention, the emulsifier is contained in an effective amount. What constitutes an "effective amount" will depend on many factors including the appropriate amounts of fat soluble agents, the type of emulsifier used, the level of impurities present in the emulsifier, and similar factors. Typically, the emulsifier comprises 0.1 to 10% by weight, preferably 1 to 10% by weight, and more preferably 3 to 6% by weight of the emulsion modifying agent.

Emulsifiers useful in the present invention are typically fat-soluble or miscible with the fat-soluble outer phase materials, especially at the temperature at which the lipid substance melts. It should also have a relatively low HLB value. Emulsifiers suitable for use in the present invention have HLB values typically in the range of 1 to 7 and may include mixtures of different emulsifiers. These emulsifiers will have HLB values of preferably 1.5 to 6 and more preferably 2 to 5.

A variety of emulsifiers may be useful herein and include, but are not limited to, those selected from sorbitan (polyoxyethylene sorbitol) esters, glyceryl esters, polyglyceryl esters, methylglucose esters, sucrose esters, ethoxylated fatty alcohols, hydrogenated castor oil ethoxylates, sorbitan ester polyoxylates, sorbitan ester ethoxylates and silicone emulsifiers.

In the present invention, they are. useful esters of sorbitan. Sorbitan esters of C16-C22 saturated, unsaturated and branched fatty acids are preferred. Due to the process by which they are typically produced, these sorbitan esters usually contain a mixture of mono-, di-, tri-, etc. esters. Representative examples of suitable sorbitan esters include sorbitan monooleate (eg SPAN® 80), sorbitan sesquioleat (eg Arlacel® 83), sorbitan monoisostearate (eg CRILL® 6 manufactured by Croda), sorbitan stearates (eg SPAN® 60), trioleate sorbitan (eg SPAN® 85), sorbitan tristearate (eg SPAN® 65), sorbitan dipalmitates (eg SPAN® 40) and sorbitan isostearate. Particularly preferred emulsifiers for use in the present invention are sorbitan monoisostearate and sorbitan sesquioleat.

Other suitable emulsifiers for use in the present invention include, but are not limited to, glyceryl monoesters, preferably glyceryl monoesters of C 16 -C 22 saturated, unsaturated and branched fatty acids such as glyceryl oleate, glyceryl monostearate, glyceryl monopalmitate, glyceryl monobehenate and mixtures thereof; C16-C22 polyglyceryl esters of saturated, unsaturated and branched fatty acids such as polyglyceryl-4-isostearate, polyglyceryl-3-oleate, diglyceryl monooleate, tetraglyceryl monooleate, and mixtures thereof; methylglucose esters, preferably methylglucose and C16-C22 esters of saturated, unsaturated and branched fatty acids such as methylglucose dioleate, methylglucose sesquiisostearate and mixtures thereof; sucrose and fatty acid esters, preferably sucrose and C12-C22 esters of saturated, unsaturated and branched fatty acids such as sucrose stearate, sucrose trilaurate, sucrose distearate (eg Crodesta® F10) and mixtures thereof; C12-C22 ethoxylated fatty alcohols such as oleth-2, oleth-3, steareth-2 and mixtures thereof; hydrogenated castor oil ethoxylates such as PEG-7 hydrogenated castor oil; sorbitan ester ethoxylates such as PEG-40 sorbitan peroleat, Polysorbate-80 and mixtures thereof; polymeric emulsifiers such as ethoxylated dodecylglycol copolymer; and silicone emulsifiers such as laurylmethicone copolyol, cetyldimethicone, dimethicone copolyol, and mixtures thereof.

In addition to these primary emulsifiers, the compositions of the present invention may optionally include a co-emulsifier to provide additional stability of the water-lipid emulsion. Suitable co-emulsifiers include, but are not limited to, phosphatidylcholines and phosphatidylcholine-containing compositions such as lecithins; salts of long C16-C22 fatty acids such as sodium stearate; quaternary ammonium salts with long dialiphatic C16-C22 and short dialiphatic C1-C4 chains, such as ditallow (tallow is a mixture of saturated, unsaturated, branched or unbranched C14-C20 tallow hydrocarbon residues) dimethylammonium chloride and ditallowdimethylammonium methylsulfate; quaternary ammonium salts with long C16-C22 dialkoyl (alkenoyl) -2-hydroxyethyl chains and short dialiphatic C1-C4 chains such as ditallowoyl-2-hydroxyethyldimethylammonium chloride; quaternary imidazolinium salts with long dialiphatic C16-C22 chains, such as methyl-1-tallowamidoethyl-2-tallowimidazolinium methylsulfate and methyl-1-oleylamidoethyl-2-oleylimidazolinium methylsulfate; quaternary benzylammonium salts with short dialiphatic C1-C4 and long monoaliphatic C16-C22 chains such as dimethylstearylbenzylammonium chloride; and synthetic phospholipids such as stearamidopropyl PG-dimonium chloride (Phospholipid PTS from Mona Industries).

D. Lipid hardness

In embodiments further comprising a conditioning component, the article will preferably have a minimum lipid hardness value of 0.02 kg. Consumer habits when using disposable products having two surfaces vary widely. When such products are ready for use, consumers generally wet the product and then "foam" it before contact with their skin or hair. "Foaming" is achieved by rubbing the surfaces of the product together before using the product. When the foaming agent is first used in the foaming and the same surface is then used in contact with the skin or hair, deposition of the conditioning agents is greatly reduced by emulsifying the conditioning agents with a surfactant. However, when the non-modifying surface (eg, a surfactant-containing surface) is rubbed against itself to form a foam and the modifying surface is then used to contact the skin or hair, maximum deposition of the modifying agents is achieved. When • «»

99

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999

9 9

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999 99

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9 999

9 9 9

9. 9 9 9 9 · <<9 9 9 9 9

9 · • r 99 both surfaces of the product are impregnated with conditioning agents, as a result of equally unstable deposition. Maximum deposition of conditioning agents should be the result when an un foamed surface containing conditioning agents is in contact with the skin or hair.

Surprisingly, it has been found that when the conditioning component (combination of conditioning agents) has a lipid hardness value of at least 0.02 kg, the volatile deposition of the conditioning agents is greatly reduced. Increasing the hardness of the conditioning component is believed to reduce transfer within the substrate and also to reduce the emulsification of the conditioning agents by surfactants during the foaming step. As a result, a greater amount of conditioning agents remain available for mechanical transmission by skin or hair contact.

The lipid hardness value is a measure of the physical hardness of the combination of all conditioning agents in the conditioning component. Increasing lipid hardness is believed to increase the consistency of deposition of conditioning agents despite the differences in foaming technique used by the consumer. It is believed that increasing the hardness of the conditioning component reduces the transfer within the substrate and also reduces the emulsification of the conditioning agents by the surfactant during foaming. As a result, a greater number of conditioning agents are available for mechanical transmission by skin or hair contact.

The conditioning component of the present invention has a lipid hardness value greater than 0.02 kg, preferably greater than 0.05 kg, and more preferably greater than 0.10 kg. The lipid hardness value of the conditioning component should preferably not be greater than 5.00 kg, more preferably 4.00 kg and most preferably 3.00 kg, as hardness levels above these points may negatively affect the deposition of conditioning agents in the conditioning component on the skin or hair.

Lipid Hardness Test:

The lipid hardness value is measured by a test traditionally used to measure the hardness of the soap bar. The Chatillon force gauge is used to measure the hardness value of 155.5 to 248.8 g of the sample conditioning component. To obtain an average value, several records are taken, each for a fresh sample. Chatillon force gauge model no. DFIS 100 is manufactured by Chatillon Corporation, located in Greensboro, North Carolina.

Substances used to increase lipid hardness:

The cleaning and conditioning products of the present invention may contain hardening agents used in combination with the conditioning agents forming the previously described conditioning component. A variety of agents can be used both as a conditioning component and as a lipid curing agent. In fact, this is the fact. Any of the previously described solid treating agents may be used as a lipid curing agent. The amount of hardener required to achieve a minimum lipid hardness of 0.02 kg is dependent upon the particular materials used and can be readily determined by one skilled in the art. The curing agent may be used as a single curing agent or a combination of curing agents, and comprises concentrations in the range of 0.1 to 99.9% by weight, preferably 0.5 to 75% by weight, more preferably 1 to 50% by weight, even more preferably 2 to 25% by weight of conditioning agent.

The term "curing agents" as used herein refers to those substances having a melting point above 30 ° C, preferably 30 to 250 ° C, more preferably 37 to 100 ° C, even more preferably 37 to 80 ° C.

Any substance can be used to increase the lipid hardness of the conditioning component, provided that it meets the following criteria: (i) the substance must be soluble in the conditioning agents of the conditioning component, and (ii) the substance must have a melting point greater than 20 ° C (e.g. be fixed at room temperature). Examples of suitable hardeners include, but are not limited to, petrolatum, highly branched hydrocarbons, fatty alcohols, fatty acid esters, vegetable oils, hydrogenated vegetable oils, polypropylene glycols, α-hydroxy fatty acids, fatty acids having 10 to 40 carbon atoms, dialkylamides and / or tribasic carboxylic acids acids, n-acyl amino acid derivatives, and mixtures thereof. Curing materials useful in the present invention are further described in U.S. Pat. No. 4,919,934 to Deckner et al., issued Apr. 24, 1990, which is incorporated herein by reference in its entirety.

Highly branched hydrocarbons suitable for use in the present invention include hydrocarbon compounds having 17 to 40 carbon atoms. Non-limiting examples of these hydrocarbon compounds include squalane, cholesterol, lanolin, docosane (i.e., C22 hydrocarbon) and isoparaffins.

Fatty alcohols suitable for use in the present invention include monohydroxy alcohols, ethoxylated fatty alcohols and fatty alcohol esters except ethoxylated fatty alcohols and fatty alcohol esters suitable as emulsifiers. Typical examples of commercially available fatty alcohols without limitation include Unilin 550, Unilin 700, Unilin 425, Unilin 400, Unilin 350 and Unilin 325, all supplied by Petrolite. Suitable ethoxylated fatty alcohols include, but are not limited to, Unithox 325, Unithox 400, Unithox 450, Unithox 480, Unithox 520, Unithox 550, Unithox 720, Unithox 750, all available from Petrolite. Non-limiting examples of suitable fatty alcohol esters include triisostearyl citrate, ethylene glycol di-12-hydroxystearate, tristearyl citrate, stearyl octanoate, stearyl heptanoate, trilauryl citrate.

• · • · · · · • · · • · · · · • · · • · * • · · · • · · · • ·

Fatty acid esters suitable for use in the present invention include wax esters, monoglycerides, diglycerides, triglycerides, and mixtures thereof. Non-limiting examples of suitable wax esters include stearyl stearate, stearyl behenate, palmityl stearate, stearyloctyl dodecanol, cetyl esters, cetearyl behenate, behenyl behenate, ethylene glycol distearate, ethylene glycol dipalmitate, and beeswax. Examples of commercial wax esters include Kester waxes from Koster Keunen, Crodamol SS from Croda and Demalcare SPS from Rhone Poulenc.

Vegetable oils and hydrogenated vegetable oils that are solid or near solid at ambient temperatures of 20-25 ° C are also useful as curing agents. Examples of suitable vegetable oils and hydrogenated vegetable oils include butterfat, chicken fat, goose fat, horse fat, lard (fatty tissues), rabbit fat, sardine oil, tallow (beef), tallow (mutton), Chinese vegetable tallow, palm kernel oil, cocoa butter, coconut oil, palm oil, palm kernel oil, hydrogenated safflower oil, hydrogenated castor oil, hydrogenated coconut oil, hydrogenated cottonseed oil, hydrogenated fish oil, hydrogenated palm kernel oil, hydrogenated palm oil, hydrogenated peanut oil , hydrogenated soybean oil, hydrogenated rapeseed oil, hydrogenated linseed oil, hydrogenated rice bran oil, hydrogenated sesame oil, hydrogenated sunflower oil and derivatives and mixtures thereof.

Propylene glycols suitable for use in the present invention include C4-C16 alkyl ethers of polypropylene glycols and C1-C16 carboxylic acid esters of polypropylene glycols. Non-limiting examples of such agents include PPG-14 butyl ether, PPG-15 stearyl ether, PPG-9, PPG-12, PPG-15, PPG-17, PPG-20, PPG-26, PPG-30, PPG-34, and mixtures thereof.

Examples of suitable α-hydroxy fatty acids and C 10 -C 40 fatty acids include 12-hydroxystearic acid, 12-hydroxylauric acid, 16-hydroxyhexadecanoic acid, behenic acid, euricane, stearic acid, caprylic acid, lauric acid, isostearic acid and their mixtures. Examples of some suitable fatty acids are further described in U.S. Pat. No. 5,429,816 issued to Hofiichter et al. On July 4, 1995; No. 5,552,136 issued to Motley on Sep. 3, 1996, the disclosure of which is incorporated herein by reference.

Alkylamides of di and / or tri-basic carboxylic acids suitable for use in the present invention include disubstituted or branched monoamides, monosubstituted or branched diamides, triamides, and mixtures thereof. Some typical examples of di- and tribasic carboxylic acid alkylamides include, but are not limited to, the alkyl amides of citric acid, tricarballylic acid, aconitic acid, nitrilotriacetic acid, and itaconic acid, such as e.g.

• · ····························

1,2,3-propantributylamide, 2-hydroxy-1,2,3-propantributylamide, 1-propene-1,2,3-trioctylamide, N, N ', N'-tri (methyldecylamido) amine, 2-dodecyl- N, N'-dibutylamide succinic acid and mixtures thereof. Other suitable amides include the n-acylamino acid derivatives disclosed in U.S. Pat. No. 5,429,816 issued to Hofrichter et al. July 4, 1995.

Waxes having an HLB of 1 to 10, preferably 6 and most preferably 5 are also suitable for use in the present invention. The HLB system (abbreviated to "Hydrophile-Lipophile Balance") is fully described and the values for the various materials are provided in The Time-Saving Guide to Emulsifier Selection (published by ICI Americas Inc., Wilmington, Del .; 1984), the disclosure of which is incorporated herein by reference in its entirety.

Suitable wax esters include C10-C40 fatty acids, diesters of C10-C40 fatty acids, wherein the alcohol is propylene glycol, ethylene glycol, polyethylene glycol, polypropylene glycol, polyglycerin or glycerin, triglycerides or diglycerides of C10-C40 fatty acids, tri- or tetraesters of C10-C40 fatty acids. with pentaerythritol, sorbitan C10-C40 fatty acid triesters, sucrose C10-C40 fatty acid polyesters having 3 to 8 mol substitution, myristyl myristate, paraffin, synthetic waxes such as Fischer-Tropsch waxes, microcrystalline waxes, castor wax, partially hydrogenated vegetable oils, behenyl behenate, myristyl propionate and mixtures thereof.

Useful wax diesters include Synchrowax ERL-C (C18-C36 acid glycol ester available from Croda) and propylene glycol wax diesters including ethylene glycol distearate and glycol distearearate. Useful wax triglycerides include Shea Butter, Cocoa Butter, Synchrowax HGL-C (C18-C36 acid triglyceride), Synchrowax HRC (tribehenine), Synchrowax HRS-C (tribehenine (a) calcium behenate, all Synchrowax available from Croda Inc), Tristearin, trimyristate and fully hydrogenated vegetable oils and mixtures thereof. Mixtures of diesters and triglycerides of waxes in a ratio of 5: 1 to 1: 1, more preferably 4: 1 to 1: 1 are preferred.

Waxes useful in the compositions of the present invention are disclosed in the following documents, all of which are incorporated by reference in their entirety: U.S. Pat. U.S. Patent No. 5,219,558 to Woodin, Jr. et al. et al., issued June 15, 1993; U.S. Pat. U.S. Patent No. 4,049,792 to Elsnau, issued September 20, 1977; U.S. Pat. U.S. Patent No. 4,151,272 to Geary et al., issued Apr. 24, 1975; U.S. Pat. No. 4,229,432 to Geria, issued Oct. 21, 1980; U.S. Pat. No. 4,280,994 to Tumey, issued July 28, 1981; U.S. Pat. No. 4,126,679 to Davy et al., issued Nov. 21, 1978; and European patent application no. 117,070 by May, published Aug. 29, 1984; "The Chemistry and Technology of Waxes", A. H. Warth, 2nd edition, reprinted 1960, Reinhold Publishing Corporation, pp. 391-393 and 421; The Petroleum Chemicals Industry, R.F.

··· ··· ···· ···· · · · · · · · · ·

Goldstein and A.L. Waddeam, 3rd Edition (1967), E & F. N. Span Ltd., pp. 33-40; "The Chemistry and Manufacture of Cosmetics", M. G. DeNavarre, 2nd Edition (1970), Van Nostrand & Company, pp. 354-376; and "Encyclopedia of Chemical Technology, Volume 24, Kirk-Othmer, 3rd Edition (1979), pp. 466-481.

Other non-limiting examples of suitable hardeners are those selected from the group consisting of sorbitan esters, glyceryl esters, polyglyceryl esters, methylglucose esters, sucrose esters, ethoxylated fatty alcohols, hydrogenated castor oil ethoxylates, sorbitan ester ethoxylates, polymeric emulsifiers and silicone emulsifiers.

Sorbitan esters are useful in the present invention. Sorbitan esters of C16-C22 saturated, unsaturated and branched fatty acids are preferred. As a result of their production, these sorbitan esters usually contain mixtures of mono-, di-, tri-, etc. esters. Representative examples of suitable sorbitan esters include sorbitan monooleate (eg SPAN® 80), sorbitan sesquioleat (eg Arlacel® 83), sorbitan monoisostearate (eg CRILL® 6 manufactured by Croda), sorbitan stearates (eg SPAN® 60), trioleate sorbitan (eg SPAN® 85), sorbitan tristearate (eg SPAN® 65), sorbitan dipalmitates (eg SPAN® 40) and sorbitan isostearate. Particularly preferred emulsifiers for use in the present invention are sorbitan monoisostearate and sorbitan sesquioleat.

Other hardeners suitable for use in the present invention include, but are not limited to, glyceryl monoesters, preferably glyceryl monoesters of C 16 -C 22 saturated, unsaturated and branched fatty acids such as glyceryl oleate, glyceryl monostearate, glyceryl monopalmitate, glyceryl monobehenate and mixtures thereof; C16-C22 polyglyceryl esters of saturated, unsaturated and branched fatty acids such as polyglyceryl-4-isostearate, polyglyceryl-3-oleate, diglyceryl monooleate, tetraglyceryl monooleate, and mixtures thereof; methylglucose esters, preferably methylglucose and C16-C22 esters of saturated, unsaturated and branched fatty acids such as methylglucose dioleate, methylglucose sesquiisostearate and mixtures thereof; sucrose and fatty acid esters, preferably sucrose and C12-C22 esters of saturated, unsaturated and branched fatty acids such as sucrose stearate, sucrose trilaurate, sucrose distearate (eg Crodesta® F10) and mixtures thereof; C12-C22 ethoxylated fatty alcohols such as oleth-2, oleth-3, steareth-2 and mixtures thereof; hydrogenated castor oil ethoxylates such as PEG-7 hydrogenated castor oil; sorbitan ester ethoxylates such as PEG-40 sorbitan peroleat, Polysorbate-80 and mixtures thereof; polymeric emulsifiers such as ethoxylated dodecylglycol copolymers; and silicone emulsifiers such as laurylmethicone copolyol, cetyldimethicone, dimethicone copolyol, and mixtures thereof.

· Φ φ φ φ • · · · · ·

Other suitable hardeners include, but are not limited to, phosphatidylcholines and phosphatidylcholine-containing compositions such as lecithins; salts of long C16-C22 fatty acids such as sodium stearate; quaternary ammonium salts with long dialifatickými and C16-C22 short dialifatickými C _r C ₄ chain, such as e.g. ditallowdimethylammonium chloride (tallow is a mixture of saturated, unsaturated, branched or unbranched C14-C20 hydrocarbon radicals tallow) and ditallowdimethylammonium methylsulfate; quaternary ammonium salts with long C16-C22 dialkoyl (alkenoyl) -2-hydroxyethyl chains and short dialiphatic C1-C4 chains such as ditallowoyl-2-hydroxyethyldimethylammonium chloride; quaternary imidazolinium salts with long dialiphatic C16-C22 chains, such as methyl-1-tallowamidoethyl-2-tallowimidazolinium methylsulfate and methyl-1-oleylamido-ethyl-2-oleylimidazolinium methylsulfate; quaternary benzylammonium salts with short dialiphatic C1-C4 and long monoaliphatic C16-C22 chains such as dimethylstearylbenzylammonium chloride; and synthetic phospholipids such as stearamidopropyl PG-dimonium chloride (Phospholipid PTS from Mona Industries).

V. Weight ratios and weight percent

In the present invention, the weight ratio of foaming surfactant to conditioning agent is less than 40: 7, preferably less than 5: 1, more preferably less than 2.5: 1 and even more preferably less than 1: 1.

In certain embodiments of the present invention, a cleaning and conditioning component is defined which comprises a foaming surfactant and a conditioning component further comprising a fat-soluble conditioning agent and a water-soluble conditioning agent, wherein the foaming surfactant comprises 1 to 75% by weight, preferably 10 up to 65% by weight, and more preferably 15 to 45% by weight, of the cleaning and conditioning component, and the conditioning component comprises 15 to 99% by weight, preferably 20 to 75% by weight, and more preferably 25 to 55% by weight of the cleaning and conditioning component.

VI. Surface application / leakage ratio

A. Method for measuring the surface application of conditioning agents

The products of the present invention may preferably have a conditioning agent firmly on the surface of the substrate. By "thoroughly on the surface of the substrate" is meant that the coating / wicking ratio is greater than 1.25, preferably greater than 1.50, more preferably greater than 2.00, even more preferably greater than 2.70 and most preferably 3.00 . The coating / wicking ratio is the ratio of the amount of treating agent on the surface of the substrate versus the amount of treating agent within the substrate. These measurements are obtained from Attenuated Total Reflectance (ATR) FT-ER spectroscopy, the use of which is well known to those skilled in the art of analytical chemistry. The same method can be applied when measuring the combination of conditioning agent and active ingredients.

The measurement procedure is as follows:

Instrumental setup: The BioRad FTS-7 spectrometer manufactured by BioRad Labs, Digital Laboratory Division, located in Cambridge, Massachusetts, is used to collect infrared spectra. The measurement typically consists of 100 readings at 4 cm ^-1 . The collecting optic consists of a 60 deg ZnSe ATR flat crystal manufactured by Graseby Specac, Inc, located in Fairfield, Connecticut. Data was collected at 25 ° C and analyzed using Grams 386 software, distributed by Galactic Industries Corp.. located in Salem, New Hampshire. Prior to measurement, the crystal was cleaned with a suitable solvent. The sample was placed on the ATR crystal under a constant load of 4.54 kg.

Experiment steps:

1) The reference spectrum (background) is measured: First, the ATR cuvette is cleaned with a suitable solvent (eg isopropyl alcohol). Then the ATR cuvette is dried. Next, the reference spectrum is measured (typically 100 readings at 4 cm ^-1 ).

2) The substrate is placed on top of the ATR crystal: first the substrate is placed flat on the measuring base. A 4.54 kg load is then placed on top of the substrate. The spectrum is then measured (typically 100 readings at 4 cm ^-1 ). The substrate serves as an internal standard to determine the absorbance of the substrate itself.

3) The spectrum for the conditioning ingredients is analyzed first by determining the absorbance caused by the substrate and measuring the peak height. The absorbance peaks caused by the conditioning agent to the skin are then determined and the peak height measured. The following table includes some examples:

Substrate Substrate height peak Conditioner Peak height conditioner Ratio Dupont 8868 ¹ 0.21 Petrolatum ³ 0.76 3.61 Fibrella F310062 ² 0.37 Glycerin ⁴ 0.52 1.41 Fibrella F310062 ² 0.37 Petrolatum ³ 1,21 3.27

polyester: C = O coupling vibration at 1710 cm ^-1

A 1 polypropylene: CH bonding vibration at 2822 cm @ -1 to 2822 cm @ -1 to 2822 cm @ -1. · 1 petrolatum: CH binding vibration at 2923 cm ⁴ glycerin: C-0 binding vibration at 1030 cm ^-1

To obtain a surface coating / leakage ratio:

1) If the ratio of absorbance of the conditioning agent to the absorbance of the substrate is > 1.25, the conditioning agent is applied thoroughly to the surface of the substrate. This is because recording FT-IR absorbance is a measure of the amount of conditioning agent up to 7 µm into the substrate.

2) If the ratio of absorbance of treatment agent to substrate absorbance is <1.25, then the treatment agent is not thoroughly deposited on the substrate surface.

B. Methods of maintaining the conditioning component thoroughly on the substrate surface

It has been found that certain process and composition improvements greatly improve the efficiency and effectiveness of delivering conditioning agents to the skin or hair. This process and composition improvements provide the same or better effect of the conditioning component at lower levels by maintaining the conditioning component on the substrate surface.

The products of the present invention effectively and efficiently deliver conditioning agents to the skin and hair by thoroughly maintaining the conditioning component containing the conditioning agents on the substrate surface. The following subsections further describe processes and composition improvements that provide a surface coating / leakage ratio greater than or equal to 1.25. All of the following treatments and compositional improvements can be used alone or in combination to keep the conditioning component thoroughly on the surface. The term "chemical component" as used herein means a conditioning agent or a combination of conditioning agents and active ingredients.

Chemical treatment of substrate:

One way of thoroughly maintaining a chemical component on a substrate surface is by chemically treating the substrate or substrate fibers with either hydrophobic or hydrophilic substances. The choice of a suitable substance (hydrophobic or hydrophilic) depends on the chemical component to be applied. For example, if the fat-soluble conditioning agent is deposited on the skin or hair, the substrate or its fibers should typically be treated with a hydrophilic substance and vice versa. Since most substrates are essentially hydrophobic, e.g. usually derived from polyolefins, this section will focus on the hydrophilic chemical treatment of the substrate.

9 99 9 9 9 9 9 9 9 9 9 9 9 9 9 9

Any of a wide variety of surfactants, including ionic and nonionic surfactants, can be used to hydrophilically modify the substrate. Suitable surfactants may be internal modifiers, e.g., polymer blends may be added prior to spinning or fiber-modifying compound formation, or local modifiers, e.g., modifying compounds, may be applied locally during or subsequent to the formation of the nonwoven warp fibers. An internal modification process is disclosed in U.S. Pat. No. 4,578,414 to Sawyer et al., and a local modification process is disclosed in U.S. Pat. No. 5,057,361 to Sayovitz et al .; both patents are incorporated herein by reference in their entirety.

Non-limiting examples of suitable surfactants include silicone-based surfactants, e.g., polyalkylene oxide modified polydimethylsiloxane; fluoroaliphatic surfactants such as perfluoroalkyl polyalkylene oxides; and other surfactants such as nonionic surfactants based on acetylphenoxypolyethoxyethanol, alkylaryl polyether alcohols and polyethylene oxides. Commercially available surfactants suitable for the present invention include various poly (ethylene oxide) surfactants available under the trade name Triton, e.g., class X-102, from Rohm and Haas Corp .; various polyethylene glycol surfactants available under the trade name Emerest, eg, classes 2620 and 2650, from Emery Indust .; various polyalkylene oxide-modified polydimethylsiloxane surfactants available under the name Silwet, e.g., class Y12488, from OSI Specialty Chemicals; and alkenylsuccinamide surfactants available under the name Lubrizol, e.g., class OS85870, from Lubrizol Corp .; and polyoxyalkylene-modified fluoroaliphatic surfactants available from Minnesota Mining and Manufacturing Co. The amount of surfactant needed and the hydrophilicity of the modified substrate or substrate fibers will vary for each application depending on the type of surfactant selected and the polymer component used. Typically, the surfactant may be added, locally or internally, in the range of 0.1 to 5% by weight, preferably 0.3 to 4% by weight, of the substrate or fibers of the substrate.

Viscosity increase:

Another way of thoroughly maintaining the chemical component on the substrate surface is to increase the viscosity prior to application to the substrate. This prevents the substrate from leaking through the chemical component. In general, there are two ways of increasing the viscosity of a chemical component: (i) application to a sub-substrate at a temperature of reversal. chemical components; and (ii) introducing a thickener into the chemical component mixture prior to application to the substrate. A combination of these two methods is preferred.

Application to substrate at phase reversal temperature:

One way to maintain the chemical component on the surface of the substrate is to apply the chemical component to the substrate at the phase temperature of the chemical component reversal. The method can be used with any chemical component having a phase reversal temperature greater than 35 ° C (eg, viscous at room temperature). The reversal phase temperature as used herein is defined as the temperature at which a chemical component changes from a liquid, liquid state to a viscous state. This method essentially applies the chemical component at a temperature at which the chemical component becomes viscous during the cooling process.

Typically, the chemical component is applied to the substrate by melting or heating. Alternatively, the chemical component may be heated and dissolved prior to application to the substrate in a solvent. However, some of the chemical components may be viscous but still fluid enough to be applied without heating. If the chemical component has a reversal temperature at or slightly higher than room temperature, other treatments from this section must be used while maintaining the chemical component on the substrate surface. The reversal temperatures (also known as melting points) of a large number of chemical compounds can be readily obtained from the Merck Index, tenth edition (1983) and CTFA Cosmetic Ingredient Handbook, second edition (1992), which are incorporated herein by reference in their entirety.

The logical step of application at the reversal temperature is to supercool the chemical component when applied to the substrate. By subcooling is meant that the cooling rate is artificially increased above the normal cooling rate at room temperature. This provides the twofold advantage of the flowability of the chemical component during processing and still reaches the reversal phase temperature before the substrate is saturated with the chemical component. This method should be used when the chemical component is viscous and supple at room temperature.

Thickener:

When the chemical component is liquid at room temperature (e.g., not viscous), the chemical component will not remain mainly on the substrate surface. Instead, the chemical component will tend to migrate and flow into the free volume of the substrate. This method provides a solution by introducing a thickener into the chemical component. This increases the viscosity of the chemical component and thereby achieves an equivalent result to application to the substrate at the phase reversal temperature. Because the viscosity of the chemical component is effectively increased, the chemical component remains thoroughly on the surface, as it effectively increases the viscosity of the chemical component. substrate without soaking the substrate. Generally, the thickener must be viscous at room temperature and be miscible with the chemical component. The reversal phase temperatures and suitable viscosity of the thickeners will vary drastically depending on the particular thickener. However, the typical reversal phase temperature of the thickener must be greater than 35 ° C, preferably greater than 40 ° C.

In general, the thickener may be anything that is viscous at room temperature. CTFA Cosmetic Ingredient Handbook, second edition (1992), which is incorporated herein by reference in its entirety, discloses a large number of thickeners. In fact, a suitable thickener may be any of the conditioning agents disclosed above that are more viscous than the chemical component and miscible in the chemical component.

Non-limiting examples of useful thickeners of the present invention are selected from the group consisting of fatty alcohols, fatty acids, ethoxylated fatty alcohols having an average degree of ethoxylation ranging from 2 to 30, sorbitan esters, glyceryl esters, polyglyceryl esters, methylglucose esters, sucrose esters, sorbitan esters ethoxylates, natural and synthetic. polyacrylic and hydrophobically modified polyacrylic resins, starches, gums, cellulose ethers, polycationic polymers, non-ionic polymers, polyethylene glycols (PEG) and mixtures thereof.

Non-limiting examples of useful thickeners of the present invention include stearic acid, behenic acid, stearyl alcohol, cetyl alcohol, sorbitan monooleate, sorbitan sesquioleate, sorbitan monoisostearate, sorbitan stearate, sorbitan tristearate, sorbitan glycerate, isostearate sorbitan, , glyceryl monobehenate, polyglyceryl-4-isostaerate, polyglyceryl-3-oleate, diglycerol monooleate, tetraglycerol monooleate, methylglucose dioleate, methylglucose sesquiisostearate, sucrose stearate, sucrose trilaurate, stearate 3-disteareth, PEG-40, sorbitan peroleat, Polysorbate-80, beeswax, polyethylene wax, Carbopol, Pemulen, cereal starch, potato starch, tapioca, guar gum, acacia, hydroxypropylcellulose, hydroxyethylcellulose, carboxymethylcellulose, Reten 201, Kymene 557H®, Acco 7112 , Carbowax.

Uneven application to substrate:

Another method of thoroughly maintaining a chemical component on the surface of a substrate is by uneven application of the chemical component to the surface of the substrate. By "uneven" is meant that the amount, manner of distribution, etc. of the chemical component may vary on the surface of the substrate. For example, some ·· ·· X · · X XX • χ * ♦ χχχχ

ΧΧΧ · ΧΧΧΧ X XX X χ χ χ XX XX XX X XX X χ XX χ χ χ XX

Části XX · Χ X X XX parts of the surface of the substrate may have greater or lesser amounts of the chemical component, including parts of the surface without any chemical component.

To apply additives to the substrate:

Another way of thoroughly maintaining the chemical component on the surface of the substrate is by determining the process of applying additives to the substrate. The best results are generally obtained when the chemical component is added to the dry substrate. Thus, first application of the foaming surfactant and then drying the surfactant-treated substrate before application of the chemical component will greatly improve the chemical component supply.

VII. Supplementary additives

The products of the present invention may contain a wide variety of optional ingredients. Some of these ingredients are detailed herein. Particularly useful are various active ingredients useful in conferring various non-conditioning or non-cleaning benefits during skin and hair cleansing and conditioning. In these compositions, the product is useful in delivering active ingredients to the skin or hair.

A. Active Ingredients

The products of the present invention may optionally contain a harmless and effective amount of one or more active ingredients, or a pharmaceutically acceptable salt thereof.

The term "harmless and effective amount" as used herein means the amount of active ingredient high enough to alter the conditions required to treat or deliver the desired benefits to the skin, but low enough to avoid serious side effects at a reasonable benefit / risk ratio as part of a reliable medical estimate. What is a safe and effective amount of the active ingredient will vary with the particular active agent, the ability of the active agent to penetrate through the skin, age, health and skin condition, and other factors.

The active ingredients useful in the present invention may be categorized based on their therapeutic benefit or their predicted mode of action. However, it is understood that the active ingredients useful in the present invention may, in several instances, provide more than one therapeutic benefit or act in more than one mode of action. Thus, the classifications herein are for convenience and are not intended to limit the active ingredient to a particular application or applications. Pharmaceutically useful in the present invention are also 4 9 9 44 44 44 9 9 9 9 9 9

Sfy 9,999 9,999 9 4 4 « ⁶²

444 44 44 4 9 9 99 acceptable salts of these active ingredients. The following active ingredients are useful in the compositions of the present invention.

Active anti-acne agents:

Examples of suitable anti-acne active agents include keratolytics such as salicylic acid (o-hydroxybenzoic acid), salicylic acid derivatives such as 5-octanoylsalicylic acid and resorcinol; retinoids such as retinoic acid and derivatives thereof (e.g. cis and trans); D and L sulfur-containing amino acids and derivatives and salts thereof, particularly N-acetyl derivatives, of which N-acetyl-L-cysteine is preferred; lipoic acid; antibiotics and antimicrobial agents such as benzoyl peroxide, octopirox, tetracycline, 2,4,4'-trichloro-2'hydroxydiphenyl ether, 3,4,4'-trichlorbanilide, azelaic acid and its derivatives, phenoxyethanol, phenoxypropanol, phenoxyisopropanol, ethyl- acetate, clindamycin and meclocycline; sebostatics such as flavonoids; and bile salts such as scymnolsulfate and derivatives thereof, deoxycholate and cholat.

Active anti-wrinkle and skin atrophy agents:

Examples of anti-wrinkle and skin atrophy active agents include retinoic acid and derivatives thereof (eg, cis and trans); retinol; retinal; retinylesters; niacinamide; salicylic acid and derivatives thereof; D and L sulfur-containing amino acids and derivatives and salts thereof, particularly N-acetyl derivatives, of which N-acetyl-L-cysteine is preferred; thiols such as ethanethiol; hydroxy acids; phytic acid; lipoic acid; lysophosphatidic acid and skin peeling agents (eg, phenol and the like).

Non-Steroidal Anti-Inflammatory Actives (NSAIDS):

Examples of NSAIDS include the following categories: propionic acid derivatives; acetic acid derivatives; phenamic acid derivatives; biphenylcarboxylic acid derivatives; and oxicams. All of these NSAIDS are fully described in U.S. Pat. No. 4,985,459 to Sunshine et al., issued Jan. 15, 1991, which is incorporated herein by reference in its entirety. Examples of useful NSAIDS include acetylsalicylic acid, ibuprofen, naproxen, benoxaprofen, flurbiprofen, phenoprofen, fenbufen, ketoprofen, indoprofen, pirprofen, carprofen, oxaprozin, pranoprofen, miroprofen, thioxaprofen, suprofen, alminoprofen, tupropenoic acid, tiapropenoic acid, tiapropenoic acid, tiapropenic acid. Also useful are steroidal anti-inflammatory drugs including cortisol and the like.

• 99 9 9 9 99 9 9 99 9 99 9 9 9 · • · 9 999 9 9 999 • • • 9 9 9 9 9 9 9 9 9 • • 9 999 99 99 99 9 9 99

Local anesthetics:

Examples of local anesthetics include benzocaine, lidocaine, bupivacaine, chloroprocaine, dibucaine, etidocaine, mepivacaine, tetracaine, diclonin, hexylcaine, procaine, cocaine, ketamine, pramoxine, phenol, and pharmaceutically acceptable salts thereof.

Artificial tanning agents and tanning accelerators:

Examples of active tanning agents and tanning accelerators include dihydroxyacetaone; tyrosine; tyrosine esters such as ethyl tyrosinate and phospho-DOPA.

Antimicrobial and antifungal agents:

Examples of antimicrobial and antifungal agents include β-lactam drugs, quinolone drugs, ciprofloxacin, norfloxacin, tetracycline, erythromycin, amikacin, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, 3,4,4'-trichloroethanilide, phenoxyethanol phenoxypropanol, phenoxyisopropanol, doxycycline, capreomycin, chlorhexidine, chlortetracycline, oxytetracycline, clindamycin, ethambutol, hexamidine-2-hydroxyethanesulfonate, metronidazole, pentamidine, gentamicin, kanamycin, minomomine, methomycin, methomycin, methacomine, methomycin, miconazole, tetracycline hydrochloride, erythromycin, zinc erythromycin, erythromycin estolate, erythromycin stearate, amikacin sulfate, doxycycline hydrochloride, capreomycin sulfate, chlorhexidine gluconate, chlorhexidine hydrochloride, chlorhexidine hydrochloride, oxotetracycline hydrochloride, oxortetracycline hydrochloride ntamicin sulfate, kanamycin sulfate, lineomycin hydrochloride, methacycline hydrochloride, methenamine hippurat, methenamine mandelate, minocycline hydrochloride, neomycin sulfate, paromomycin sulfate, streptomycin sulfate, tobramycin sulfate, paroxazole hydrochloride, amaxfadine hydrochloride, amanfadine, amanfumine , tolnaphthate, zinc pyrithione and cicotrimazole.

Preferred examples of active agents useful in the present invention include those selected from the group consisting of salicylic acid, benzoyl peroxide, acid

3-hydroxybenzoic acid, glycolic acid, lactic acid, 4-hydroxybenzoic acid, acetylsalicylic acid, 2-hydroxybutyric acid, 2-hydroxypentanoic acid, 2-hydroxyhexanoic acid, cis-retinoic acid, trans-retinoic acid, retinol, phytic acid, N- acetyl-L-cysteine, lipoic acid, azelaic acid, arachidonic acid, benzoyl peroxide, tetracycline, ibuprofen, naproxen, cortisol, acetominofen,

• this • it • it it it this • * • • • • · • · • tototo • • • this • it «· • · · • • • it • · • t • this this • it • it • it this

resorcinol, phenoxyethanol, phenoxypropanol,

2,4,4'-trichloro-2'-hydroxydiphenyl ether, 3,4,4'-trichlorocarbanilide, hydrochloride, clotrimazole, miconazole, neocycin sulfate and mixtures thereof.

phenoxyisopropanol, octopirox, lidocaine

Active sunscreening agents:

Active sunscreen filtering agents are also useful in the present invention. Various sunscreen agents are described in U.S. Pat. No. 5,087,445 to Haffey et al., issued Feb. 11, 1992; in U.S. Pat. U.S. Patent No. 5,073,372 to Turner et al., issued Dec. 17, 1991; in U.S. Pat. U.S. Patent No. 5,073,371 to Turner et al., issued Dec. 17, 1991; and in Segarin et al., Chapter VIII, p. 189, and in Cosmetics Science and Technology, all of which are incorporated herein by reference. Non-limiting examples of sun filters useful in the compositions of the present invention include those selected from the group consisting of 2-ethylhexyl- [3- (p-methoxyphenyl) -2-propenoate], 2-ethylhexyl-N, N-dimethyl- paminobenzoate, p-aminobenzoic acid, 2-phenylbenzimidazole-5-sulfonic acid, octocrylene, oxybenzone, homomenthyl salicylate, octyl salicylate, 4,4'-methoxy-t-butyldibenzoylmethane, 4-isopropyldibenzoylmethane, 3-benzylideneafi 4-methylbenzylidene) camphor, titanium dioxide, zinc oxide, silica, iron oxide and mixtures thereof. Other suitable solar filters are disclosed in U.S. Pat. No. 4,937,370 to Sabatelli, issued June 26, 1990; No. 4,999,186 to Sabatelli et al., issued Mar. 12, 1991, which are incorporated by reference herein in their entirety. Particularly preferred examples of such sun filters include those selected from acid ester groups

4-N, N- (2-ethylhexyl) methylaminobenzoic acid with 2,4-dihydroxybenzophehone, 4-N, N- (2-ethylhexyl) methylaminobenzoic acid ester with 4-hydroxydibenzoylmethane, acid ester

4-N, N- (2-ethylhexyl) methylaminobenzoic acid with 2-hydroxy-4- (2-hydroxyethoxy) benzophenone, 4-N, N- (2-ethylhexyl) methylaminobenzoic acid ester with 4- (2-hydroxyethoxy) dibenzoylmethane and mixtures thereof. The exact amount of sun filters used will depend on the sun filter selected and the desired Sun Protection Factor (SPF) to be achieved. SPF is a commonly used measure of sunscreen protection against erythema. See. Federal Register, Volume 43, No. 166, pp. 38206-38269, Aug. 25, 1978, which is incorporated herein by reference in its entirety.

Non-limiting examples of preferred active agents useful in this invention include those selected from the group consisting of salicylic acid, benzoyl peroxide, niacinamide, cis-retinoic acid, trans-retinoic acid, retinol, retinyl palmitate, phytic acid,

β ·· * * * « ·· ·· ♦ · · • · · • » • · • ··· • · ·· « * · • 9 • · · ·· ·· · » • » 99

N-acetyl-L-cysteine, azelaic acid, lipoic acid, resorcinol, lactic acid, glycolic acid, ibuprofen, naproxen, cortisol, phenoxyethanol, phenoxypropanol, phenoxyisopropanol, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, 3, 4,4'-trichlorocarbanilide, 2-ethylhexyl- [3- (p-methoxyphenyl) -2-propenoate], oxybenzone, 2-phenylbenzimidazole-5-sulfonic acid, dihydroxyacetone and mixtures thereof.

B. Cationic Surfactants

The products of the present invention may optionally contain one or more cationic surfactants provided that such materials are selected so as not to interfere with the overall foaming characteristics of the desired foaming surfactants. Cationic surfactants are useful as antistatic agents or as emulsifiers.

Non-limiting examples of cationic surfactants useful in the present invention are disclosed in McCutcheon's Detergents and Emulsifiers, North American edition (1986), Publishing Corporation and McCutcheon's Functional Materials, North American Edition (1992), both of which are incorporated by reference in their full text.

Non-limiting examples of cationic surfactants useful in the present invention include cationic alkyl ammonium salts, such as those having the general formula: R ¹ R ² R ³ R ⁴ N + X where R ¹ is selected from an alkyl group having 12 to 18 carbon atoms, or aromatic, aryl or alkylaryl groups having 12 to 18 carbon atoms; R ² , R ³ and R ⁴ are independently selected from hydrogen, alkyl of 1 to 18 carbon atoms, or aromatic, aryl or alkylaryl groups of 12 to 18 carbon atoms; and X is an anion selected from chloride, bromide, iodide, acetate, phosphate, nitrate, sulfate, methylsulfate, ethylsulfate, tosylate, lactate, citrate, glycolate and mixtures thereof. In addition, the alkyl groups may also contain ether linkages or hydroxyl or amino substituents (e.g., the alkyl groups may contain polyethylene glycol and polypropylene glycol moieties).

9

More preferably, R is an alkyl group having 12 to 18 carbon atoms; R is selected from H or an alkyl group having 1 to 18 carbon atoms; R ³ and R ⁴ are independently selected from H or an alkyl group having 1 to 3 carbon atoms; and X is the same anion as described in the previous paragraph.

9 9 99 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 9 · 99 99

Most preferably R ^{1 is an} alkyl group having 12 to 18 carbon atoms; R ² , R ³ and R ⁴ are selected from H or an alkyl group having 1 to 3 carbon atoms; and X is the same anion as described previously.

Other useful cationic surfactants include amino-amides optionally wherein in the above structure ^R1 is alternatively ^R5 CO- (CH2) _n -, wherein ^R is an alkyl group having 12 to 22 carbon atoms and n is an integer from 2 to 6, more preferably from 2 to 4 and most preferably from 2 to 3. Unlimited examples of these cationic emulsifiers include stearamidopropyl-PGdimethylammonium chloride phosphate, stearamidopropylethyldimethylammonium ethylsulfate, stearamidopropyldimethyl (myristylacetate) ammonium chloride, stearamidopropyldimethylcetearylammonium stearamide, stearamidopropyldimethylcetearylammonium.

Non-limiting examples of quaternary ammonium salts of cationic surfactants include those selected from the group consisting of cetylammonium chloride, cetylammonium bromide, laurylammonium chloride, laurylammonium bromide, stearylammonium chloride, stearylammonium bromide, cetyldimethylammonium ammonium chloride, cetyldimethylammonium ammonium, chloride, stearyl bromide, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, lauryl ammonium chloride, lauryl bromide, stearyltrimethylammonium chloride, stearyltrimethylammonium bromide, lauryl dimethyl ammonium chloride, stearyldimethylcetylditallowdimethylamonium chloride, dicetylamonium chloride, dicetylamonium bromide, dilauryl ammonium chloride, dilauryl ammonium bromide, distearyl ammonium chloride, distearyl ammonium bromide, dicetyl methyl ammonium chloride, dicetylmethylammonium bromide, dilaurylmethylammonium chloride, dilaurylmethyl ammonium bromide, distearylmethylammonium, chloride, distearyldimethylammonium chloride, distearylmethylammonium bromide, and mixtures thereof. Quaternary ammonium salts additionally include those in which the C12 to C22 alkyl chain is derived from tallow fatty acids or from coconut oil fatty acids. The term "tallow" refers to alkyl groups derived from tallow fatty acids (saturated tallow fatty acids), which usually have a mixture of alkyl chains in the range of C 16 to C 18. The term "coco" refers to alkyl groups derived from fatty acids derived from coconut oil, which usually have a mixture of alkyl chains in the range of C12 to C14. Examples of quaternary ammonium salts derived from these tallow and coconut sources include ditallowdimethylammonium chloride, ditallowdimethylammonium methyl sulfate, di (hydrogenated tallow) dimethylammonium

ΦΦΦ

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Φ Φ ·

ΦΦΦΦ Φ

Φ · ΦΦΦ

ΦΦΦΦ Φ

ΦΦ ΦΦ

ΦΦ

Φ Φ ·

Φ Φ Φ

Φ Φ *

Φ Φ Φ chloride, di (hydrogenated tallow) dimethylammonium acetate, ditallowdipropylammonium phosphate, ditallowdimethylammonium nitrate, di (cocoalkyl) dimethylammonium chloride, di (cocoalkyl) dimethylammonium bromide, tallowammonium chloride, cocoethylammonium chloride, stearamethylammonium chloride, stearamidopropyl ethyl stearate; stearamidopropyldimethyl (myristylacetate) ammonium chloride, stearamidopropyldimethylcetearylammonium tosylate, stearamidopropyl dimethylammonium chloride, stearamidopropyldimethylammonium lactate and mixtures thereof.

Preferred cationic surfactants useful in the present invention include those selected from the group consisting of dilauryldimethylammonium chloride, distearyldimethylammonium chloride, dimyristyldimethylammonium chloride, dipalmityldimethylammonium chloride, distearyldimethylammonium chloride, and mixtures thereof.

C. Other optional ingredients

The products of the present invention may contain a number of other optional ingredients. These additional ingredients should be pharmaceutically acceptable. CTFA Cosmetic Ingredient Handbook, Second Edition, 1992, incorporated herein by reference in its entirety, describes a wide variety of unrestricted cosmetic and pharmaceutical ingredients commonly used in the skin care industry suitable for use in the compositions of the present invention. Unlimited examples of additive functional classes are described on page 537 of this publication. Examples of these and other functional classes include: abrasives, absorbents, anti-caking agents, antioxidants, vitamins, binders, biological additives, buffering agents, enhancing agents, chelating agents, chemical additives, colorants, cosmetic astringens, cosmetic biocides, denaturants, drugs, astringents, topical analgesics, tanning agents, perfume ingredients, humectants, opacifying agents, pH adjusting agents, preservatives, propellants, reducing agents, skin whitening agents and sun filters.

Aesthetic components such as fragrances, pigments, dyes, essential oils, skin feelers, astringents, skin softeners and skin care agents are also useful in the present invention.

VIII. Production methods

The disposable cleaning and conditioning products of the present invention are manufactured by separately or simultaneously applying or impregnating a foaming surfactant, conditioning ingredients and fragrance ingredients to or into a water-insoluble substrate, wherein the resulting

·· ·· ·· • · · • • • • ♦ • • ♦ ♦ * · • « • «· • « • ♦ «♦ * • · • * • • · • • • • • · · · · • » • ·

the product is thoroughly dry. By "separate" is meant that the surfactants and conditioning agents may be added sequentially, in any order, without being premixed. By "concurrent" is meant that surfactants and conditioning agents may be added at the same time as they may or may not be premixed. The fragrance component should be added to or impregnated into the substrate, or any layer thereof, separately from the foaming surfactant to possibly dissolve the water-soluble coating agent. The fragrance component is also preferably added to or impregnated into the substrate or any layer thereof when the article is dry.

Where there is more than one layer, the foaming surfactant and / or conditioning component may also be added to or impregnated into each layer in any order. The foaming surfactant and / or conditioning agent may optionally be added to or impregnated into the substrate. Treatment with the foaming surfactant, conditioning agent and / or fragrance component may be performed at any time before or after the bonding of the first and second layers. Regardless of the order of treatment, the excess surfactant, conditioning agent and / or fragrance component (e.g., by compression) should be removed. The treated material (e.g., first layer 100, second layer 200, both layers 100 and 200, or bonded substrate) should then be dried by conventional methods.

For example, the second layer may be treated with a foaming surfactant prior to bonding the first layer 100 and the second layer 200. After the two layers have been joined, one of the two outer surfaces (eg, unconnected surfaces) of the layers 100 and / or 200 may be treated with a conditioning component and / or a fragrance component. The foaming surfactants and conditioning agents may optionally be added to or impregnated into the second layer 200 simultaneously prior to the combination of the two layers. The foaming surfactants and conditioning agents may optionally be mixed prior to addition to or impregnation into the second layer 200. In this process, the fragrance component may not be added in conjunction with the surfactant. If the fragrance component is added after the surfactant, any excess solvents (eg water) must be removed before the fragrance component is added.

Alternatively, before the two layers are joined, the first layer 100 may be treated with a foaming surfactant using methods that do not cause the first layer to be extended or expanded. This can be achieved in the production of the first layer by various application methods known to those skilled in the art. Non-limiting examples of application methods include extrusion coating and groove coating.

χ · · XX XX XX XX XX XX XX XX x x x x x x x x x x x x x x x x x x x x x

XX XX XX XX XX XX

The surfactant, conditioning agent, fragrance component and any other ingredients may be added to or impregnated into one of two layers (100 or 200) or the resulting bonded layers (100 and 200) by methods known to those skilled in the art, eg by spraying, laser printing, spraying, dipping, soaking or coating.

When water or moisture is used in the manufacture, or when water or moisture is present, the fragrance component is added after the resulting treated substrate is dried to thoroughly be dewatered. The treated substrate may be dried by any method known to those skilled in the art. Non-limiting examples of known drying methods include the use of convection ovens, radiant heat sources, microwave ovens, forced-air ovens, and heated rollers or drums. Drying also includes air drying without the addition of thermal energy other than ambient. A combination of different drying methods may also be used.

IX Methods of cleansing and conditioning the skin or hair

The present invention also relates to a method of cleansing and conditioning the skin or hair with the personal cleansing product of the present invention. The methods include the steps of: wetting a thoroughly dry disposable personal cleansing product comprising a water-insoluble substrate, a foaming surfactant, and a conditioning component, and contacting the skin or hair with the wetted product. In other embodiments, the present invention is also useful in delivering various active ingredients to the skin or hair.

The products of the present invention are thoroughly dry before use and are intended to be wetted with water before use. This product is moistened by immersion in or placing it under a stream of water. Foam is formed on the article by mechanical back and forth movements and / or deformation of the article either before or during contact of the article with skin or hair. The resulting foam is suitable for cleansing and conditioning the skin or hair. During the cleaning procedure and subsequent rinsing with water, the conditioning agents and active ingredients are deposited on the skin or hair. Deposition of conditioning agents and active ingredients is enhanced by physical contact of the substrate with the skin or hair.

X. A method of consistently depositing conditioning agents and any active ingredients on the skin or hair

The products of the present invention are suitable for consistently depositing the conditioning agents of the present invention on the skin or hair. In other embodiments, where present

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• * · 99 • 4 99 4 * «4 4 • • 4 « • 4 • • ··· • • 999 4 • • • • 4 4 4 • 4 9 4 9 4 4 • 44 4 ·· 4 4 99 44 · »

active ingredient, the compositions are also suitable for consistently depositing the active ingredients on the skin or hair.

The products of the present invention have a depositing consistency of greater than 60%, preferably greater than 65%, more preferably greater than 70% and most preferably greater than 75%.

A measure of the consistency of depositing is the quotient obtained by dividing the depositing of the conditioning agents via "non-ideal foaming and use" by depositing the conditioning agents via "ideal foaming and use". Non-ideal foaming as used herein means that foaming is achieved by rubbing the surface of the conditioning agent product against or against each other and then contacting the skin or hair with the same surface. This causes ineffective deposition of the conditioning agents since some of the conditioning agents are emulsified by the surfactant. Ideal foaming as used herein means that foaming is achieved by rubbing the surface of the treatment agent-free product against or against each other and then contacting the skin or hair with the treatment-containing surface. The same starting points would be applied when both surfaces of the substrate were treated with conditioning agents (eg, deposition obtained by foaming and contacting the skin with the same foamed surface containing emulsified conditioning agents versus skin contact with a foamed surface containing non-emulsified conditioning agents). Deposition consistency is maximized when the lipid hardness of the conditioning components is greater than 0.02 kg.

Quantification of the conditioning components deposited on the skin or hair can be measured using various standard analytical techniques well known to those skilled in the art. These methods include, for example, extraction of the skin or hair area with a suitable solvent and subsequent chromatographic analysis (ie, gas chromatography, liquid chromatography, supercritical fluid chromatography, etc.), IR spectroscopy, UV / VIS spectroscopy, mass spectroscopy, etc. skin or hair by techniques such as IR spectroscopy, UV / VIS spectroscopy, opacity measurement, fluorescence spectroscopy, ESCA spectroscopy and the like.

In a typical deposition measurement method, the article of the present invention is moistened with water and squeezed and moved back and forth to form a foam. The product is then rubbed for about 15 seconds with a space on the skin or head approximately 25 to 300 cm ² , preferably 50 to 100 cm ² , which is delimited by a suitable indelible marker. The site is then rinsed for 10 seconds and then allowed to air dry for 10 minutes. This site is then either extracted and the extracts analyzed or analyzed directly using any of the techniques mentioned above.

<4 4 · 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 ·· 4 4 4 4> 44 ·· 44 4

Examples:

The following examples further describe and demonstrate embodiments within the scope of the present invention. In the following examples, all ingredients are given at effective levels. The examples are for the purpose of illustration only and are not to be construed as limiting the present invention, since there are many potential variations without departing from the spirit and scope of the invention.

Additives are labeled with chemical names or CTFA names and all weights are in percent of active agents.

Examples 1 to 5

A. Substrate

The multi-layered substrate as described in Figures 1, 3A and 3B is prepared as described herein. This substrate may be replaced with any nonwoven material, e.g., Veratec 104-102 or Chicopee C5763.

B. Surface-active phase

The following ingredients are mixed in a suitable container at room temperature. Once the polyquatemium is dispersed, the mixture is heated to 65 ° C.

Component Weight percent Example 1 Example 2 Example 3 Example 4 Example 5 Water supplement to 100 supplement to 100 supplement to 100 supplement to 100 supplement to 100 Polyquatemium-10 0.25 0.25 0.25 0.25 0.25

··························

Once the above mixture is heated to 65 ° C, the following ingredients are added to the mixture.

EDTA disodium 0.1 0.1 0.1 0.1 0.1 Glycerine 3.00 3.00 3.00 3.00 3.00 Sodium Lauroylactylate 3.33 3.33 - 3.33 3.33 Sodium caproyllactylate - - 3.33 - - Kokamidopropylbetain 3.33 3.33 3.33 3.33 3.33 Decyl polyglucoside 3.33 3.33 3.33 3.33 3.33

Once the above ingredients are mixed together, the mixture is cooled to 45 ° C. The following ingredients are added to a separate mixing vessel:

Water 2,0 2,0 2,0 2,0 2,0 Butylene glycol 2,0 2,0 2,0 2,0 2,0 Glydant Plus 0.2 0.2 0.2 0.2 2,0

Once Glydant Plus has dissolved, this mixture is added to the first mixing vessel and cooled to room temperature. Once the mixture is cooled, 1.5 g of this solution is applied to the nonwoven substrate and dried.

C. Conditioner phase

In a suitable container, the following ingredients are mixed at room temperature and the mixture is heated to 70 ° C during mixing.

SEFA * kotonat 48,00 75,00 33.60 70,00 80.00 SEFA * behenat 12.00 25,00 8.40 10.00 10.00 Petrolatum 10.00 - 7.00 - - Glyceryl tribehenate 5.00 - 3.50 - - Stearyl alcohol - - - 5.00 - Paraffin - - - 15.00 - Cholesterol ester 25,00 - 17.50 - - Natural wax - - - - 10.00 Glycerine - - 28,00 - - Triglyceryl monostearate - - 1.90 - - Decaglyceryl dipalmitate - - 0.21 - -

¹ available as Abil WE-09 from Glodschmidt ² available as PolyAldo TGMS from Lonza Chemical ³ available as PolyAldo 10-2P from Lonza Chemical * SEFA stands for fatty acid esters and sucrose

While stirring, the mixture was cooled to room temperature. 0.17 g of this phase is then added to a substrate which already contains a surfactant phase. The resulting cleansing product is used moistened with water and is suitable for cleansing the skin or hair and for consistently depositing conditioning agents on the skin or hair.

The resulting lipid hardness and deposition consistency values are as follows:

Example 1 Example 2 Example 3 Example 4 Example 5 Lipid hardness value 0.20 2.00 0,025 5.00 1.00 Consistency of depositing 66% 75% 61% 82% 67%

In alternative manufacturing processes, the foaming surfactants, conditioning agent and optional ingredients are separately or simultaneously added to or impregnated (i) into one or both layers before the layers are joined into the laminate, or (ii) after the layers bond to a laminate. The addition or impregnation of the surfactant and / or conditioning component on or to the substrate is accomplished by spraying, printing, spraying, dipping or coating.

Similarly, the foaming surfactant and emulsion modifying agent may be added to the substrate in any order. Non-limiting examples of such sequences include (i) first adding a surfactant to the second layer, then joining the substrate and then treating the conditioning component; (ii) first mixing the surfactant with the conditioning component, then treating the second layer and then joining the two layers; (iii) treating the second layer with a first surfactant and then a conditioning component before joining the two layers and then joining the two layers.

In alternative embodiments, the present substrate is replaced by other substrates, such as woven substrates, water-knitted substrates, natural sponges, synthetic sponges, or polymeric knitted nets.

► «· 4 4 4 4 ·«

D. Aromatic phase

66.5% β-cyclodextrin, 22% water and 11.5% perfume were added to the twin screw extruder without an exit die at a total rate of 450 g / min. The mixer speed is 400 rpm and the blade configuration is selected so that the specific machine power input of the mixer is greater than 754.7 W / min.

In a suitable vessel, the β-cyclodextrin complex is added to the molten PEG 4600 (65c) in a ratio of 25% by weight of the complex to 75% by weight of PEG 4600. The resulting mixture is ground on a 2.5 theoretical pass mill. The mixture is then pumped into suitable storage containers.

The resulting mixture was then added to the dry substrate at a rate of 0.3 g per layer.

Water 5,500 5,500 5,500 5,500 5,500 PEG 4600 75,000 75,000 75,000 75,000 75,000 β-cyclodextrin ¹ 16,625 16,625 16,625 16,625 16,625 Selina PG Mod l ² 2,875 - 2,875 2,000 2,000 Menthol - 2,875 - 0.875 0.875

Cerastar Corp.

² Givaudan Pipes

Examples 6 to 9

A personal cleansing and conditioning product is prepared as follows: Component Example 6 Weight percent Example 7 Example 8 Example 9 Phase A Water Supplement to Supplement to Supplement to Supplement to 100 ALIGN! 100 ALIGN! 100 ALIGN! 100 ALIGN! Glycerine 10.00 10.00 10.00 10.00 Disodium Lauroamfodiacetat (a) 4.00 4.00 - - Sodium tridecethsulfate Sodium Lauroamfoacetate - - 2.40 2.40 Lauroylsarkosinat Sodium 4.00 4.00 - - Ammonium Laurethsulfate - - 4.20 4.20

· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·

Ammonium lauryl sulphate - - 1.40 1.40 Polyquatemium-10 0.25 0.25 0.25 0.25 EDTA disodium 0.10 0.10 0.10 0.10 Phase B SEFA * kotonat 3.00 3.00 3.00 3.00 Petrolatum - 1.50 - - Cetyldimethikon - - - 2.00 Phase C Butylene glycol 2.00 2.00 2.00 2.00 DMDM hydantoin (a) 0.20 0.20 0.20 0.20 iodopropinylcarbamate Phase D Water 5,500 5,500 5,500 5,500 PEG 4600 75,000 75,000 75,000 75,000 β-cyclodextrin ¹ 16,625 16,625 16,625 16,625 Selina PG Mod l ² 2,875 - 2,875 2,000 Menthol - 2,875 - 0.875

¹ Cerastar Corp.

² Givaudan Pipes * SEFA stands for fatty acid esters and sucrose

Water-insoluble substrate

A water-knitted, non-woven substrate having a basis weight of 72 g / m and containing 50% by weight of rayon and 50% by weight of polyester of approximately 15 x 19 cm and a height of 0.05 cm.

In a suitable vessel, the phase A additive is mixed at room temperature to form a dispersion and heated to 65 ° C with stirring. In a separate suitable container, the ingredients of phase B are mixed and heated to 65 ° C. Once the same temperature has been reached, the phase B ingredients are mixed in a vessel containing the phase A ingredients and then cooled to 45 ° C. They are then mixed in a separate vessel at

99 99

9 9 9 9 9 •

The phase C is then added at room temperature to a vessel containing a combination of phases A and B. 1.5 g of the resulting solution is sprayed onto the substrate. Alternatively, the substrate may be immersed in the resulting solution. The treated substrate is then dried to constant weight in an oven. Alternatively, the treated substrate is dried to constant weight in a convection oven at 45 ° C.

Phase D ingredients are prepared as follows. 66.5% β-cyclodextrin, 22% water and 11.5% perfume were added to the twin screw extruder without an exit die at a total rate of 450 g / min. The mixer speed is 400 rpm and the blade configuration is selected so that the specific machine power input of the mixer is greater than 754.7 W / min.

In a suitable vessel, the β-cyclodextrin complex is added to the molten PEG 4600 (65c) in a ratio of 25% by weight of the complex to 75% by weight of PEG 4600. The resulting mixture is ground on a 2.5 theoretical pass mill. The mixture is then pumped into suitable storage containers.

The resulting mixture was then added to the dry substrate at a rate of 0.3 g per layer.

The resulting cleansing product is used moistened with water and is suitable for cleansing the skin or hair and for consistently depositing conditioning agents on the skin or hair.

In alternative manufacturing processes, the foaming surfactants, conditioning component and optional ingredients are separately or simultaneously added to or impregnated into the water-insoluble substrate by spraying, laser printing, spraying, dipping or coating.

In alternative embodiments, the present substrate is replaced by other substrates, such as woven substrates, water-knitted substrates, natural sponges, synthetic sponges, or polymeric knitted nets.

Examples 10 to 14

Phase A. Surface active phase

The following ingredients are mixed in a suitable container at room temperature. Once the polyquatemium is dispersed, the mixture is heated to 65 ° C.

Folder Weight Percentage

Example Example Example Example Example 10 11 12 13 14 Water supplement supplement supplement supplement supplement

Polyquatemium-10 to 100 0.25 to 100 0.25 to 100 0.25 to 100 0.25 to 100 0.25

While the above mixture is heated at 65 ° C, the following ingredients are added to the mixture.

EDTA disodium 0.1 0.1 0.1 0.1 Ammonium Laurethsulfate 4.2 4.2 4.2 4.2 - Ammonium lauryl sulphate 1.4 1.4 1.4 1.4 - Sodium Lauroamfoacetate 2.4 2.4 2.4 2.4 - Sodium Lauroylsarcosinate - - - - 4.00 Lauroamfodiacetat disodium & - - - 4.00

sodium tridecethsulfate

Once the above ingredients are mixed together, the mixture is cooled to 45 ° C. The following ingredients are added to a separate mixing vessel:

Water 2,0 2,0 2,0 2,0 2,0 Butylene glycol 2,0 2,0 2,0 2,0 2,0 Glydant Plus 0.2 0.2 0.2 0.2 2,0

Once Glydant Plus has dissolved, this mixture is added to the first mixing vessel and cooled to room temperature. Once the mixture is cooled, 1.5 g of this solution is applied to the nonwoven substrate and dried.

Phase B. Adapting emulsion

In a suitable container, the following ingredients are mixed at room temperature and the mixture is heated to 70 ° C during mixing.

SEFA * kotonat 4.65 4.00 4.65 34.40 4.65 SEFA * behenat 0.35 - 0.35 2.60 0.35 Petrolatum - 1.00 - - - Sorbitan monooleat - - - 3.00 - Polyglyceryl 4-isostearate (a) 5.00 5.00 5.00 - 5.00

cetyldimethicone (a) hexyl laurate ^{1 1} available as Abil WE-09 from Glodschmidt * SEFA stands for fatty acid esters and sucrose

When the temperature of the mixture reaches 70 ° C, the heating is stopped and the following ingredients are added slowly with continuous stirring:

Glycerin 90.00 90.00 70.00 60.00 90.00

Panthenol - - 20.00

The mixture was cooled to room temperature with stirring. 0.17 g of this phase is then added to a substrate which already contains a surfactant phase.

Phase C. Aromatic phase

Water 5,500 5,500 5,500 5,500 5,500 PEG 4600 75,000 75,000 75,000 75,000 75,000 β-Cyclodextrin ¹ 16,625 16,625 16,625 16,625 16,625 Selina PG Mod l ² 2,875 - 2,875 2,000 2,000 Menthol - 2,875 - 0.875 0.875

¹ Cerastar Corp.

² Givaudan Pipes

66.5% β-cyclodextrin, 22% water and 11.5% perfume were added to the twin screw extruder without an exit die at a total rate of 450 g / min. The mixer speed is 400 rpm and the blade configuration is selected so that the specific machine power input of the mixer is greater than 754.7 W / min.

In a suitable vessel, the β-cyclodextrin complex is added to the molten PEG 4600 (65c) in a ratio of 25% by weight of the complex to 75% by weight of PEG 4600. The resulting mixture is ground on a 2.5 theoretical pass mill. The mixture is then pumped into suitable storage containers.

The resulting mixture was then added to the dry substrate at a rate of 0.3 g per layer. The resulting cleansing product is used moistened with water and is suitable for cleansing the skin or hair and for depositing conditioning emulsions on the skin or hair.

In alternative manufacturing processes, foaming surfactants, emulsion modifiers, and optional ingredients are separately or simultaneously added to or impregnated into a water-insoluble substrate by spraying, laser printing, spraying, dipping or coating.

• ♦ φ φ φ φ · · φ φ φ φ φ φ φ φ • φ φ · • φ φ φ φ φ φ φ φ φ φ φ φ φ φ φ

In alternative embodiments, the present substrate is replaced by other substrates, such as woven substrates, water-knitted substrates, natural sponges, synthetic sponges, or polymeric knitted nets.

Industrial Applicability:

The present invention is useful in the manufacture of a disposable personal cleansing product, which is used to clean and condition the skin or hair, which provides the skin or hair conditioner in a consistent manner and which has improved fragrance delivery. The product is also capable of delivering some active ingredients to the skin or hair.

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Claims (23)

PATENT CLAIMS 1. A disposable personal care cleansing and conditioning product which stores substances which are rinsed from the skin or hair and which has the desirable imparting odor, comprising: (a) a water-insoluble substrate; b) at least one foaming surfactant added to or impregnated into said substrate, and c) a fragrance-release complex added to or impregnated into said substrate, constituting 0.015 to 15% by weight of said water-insoluble substrate, and comprising: i) 10 to 90% by weight of the complex of a porous fragrance carrier; and ii) 1 to 90% by weight of the complex of a fragrance impregnated in said carrier, wherein said product is thoroughly dry before use. 2. A disposable personal care product according to claim 1 wherein said foaming surfactant comprises 0.5 to 12.5% by weight of said water-insoluble substrate, and wherein the ratio of said fragrance to said porous fragrance carrier. ranging from 5: 1 to 1:10. A disposable personal care product according to claim 1 or 2, wherein said fragrance carriers are selected from the group consisting of cyclodextrins, preferably α-cyclodextrin, β-cyclodextrin, γ-cyclodextrin, or mixtures and derivatives thereof; amorphous silicas; precipitated silica; calcined silicas; colloidal silicas; spheroidal silicas; aluminosilicates, preferably zeolite, alumina or mixtures thereof; calcium silicates; porous starches; agglomerated starches; polymethacrylate copolymers; and mixtures thereof. A disposable personal care product according to any one of claims 1 to 3, wherein said fragrance is selected from the group consisting of perfume ingredients, coolants and mixtures thereof. 9 9 9 9 · · 99 9 999 9 9 9 99 9 9 9 9 9 9 9 9 9 9 9 9 9 »9 ·· 99 The disposable personal care cleansing product according to any one of claims 1 to 4, wherein at least one fragrance portion is selected from the group consisting of highly volatile perfume ingredients having boiling points up to 250 ° C; medium volatile perfume ingredients having boiling points of 250 to 350 ° C; and mixtures thereof. The disposable personal care cleansing product according to any one of claims 1 to 5, characterized in that it further comprises 0.1 to 10% by weight, based on the substrate weight, of a pure fragrance. A disposable personal care cleansing article according to any one of claims 1 to 6, wherein the fragrance-release complex is coated with a substance selected from the group consisting of paraffin waxes; microcrystalline waxes; animal waxes; vegetable waxes; saturated fatty acids and fatty alcohols; fatty acid esters; cellulose esters; polyalkylene glycol, preferably polyethylene glycols, polypropylene glycols, mixed polyalkylene glycols and mixed polyalkylene glycol copolymers; polyvinyl alcohol; and mixtures thereof, and wherein the coating is present in an amount of 2 to 50% by weight of the fragrance-releasing complex. 8. A disposable personal care product according to claim 7, wherein said fragrance carrier is cyclodextrin and wherein said coating substance is polyethylene glycol preferably having a relative molecular weight of 4400 to 400000. The disposable personal care cleansing product according to any one of claims 1 to 8, further comprising 3 to 99% by weight of said water-insoluble substrate, modifying ingredients added to or impregnated into said substrate, wherein said the conditioning component comprises substances selected from the group consisting of water-soluble conditioning agents, fat-soluble conditioning agents, emulsifying agents, lipid curing agents and mixtures thereof. A disposable personal care product according to any one of claims 1 to 9, wherein said foaming surfactant is selected from the group consisting of anionic foaming surfactants, non-ionic foaming surfactants, amphoteric foaming surfactants, and mixtures thereof. • 99 99 9 9 4 9 9 9 A disposable personal care product according to any one of claims 1 to 10, wherein said water-insoluble substrate is selected from the group consisting of nonwoven substrates, woven substrates, water-wound substrates, natural sponges, synthetic sponges, polymer knitted sponges. nets, shaped films and mixtures thereof. The disposable personal care cleansing product according to any one of claims 9 to 11, wherein said fat-soluble conditioning agent and said lipid curing agent are selected from the group consisting of fatty acids, fatty acid esters, fatty alcohols, ethoxylated alcohols. , polyol polyesters, glycerine monoesters, glycerine polyesters, epidermal and sebaceous hydrocarbons, lanolin, mineral oil, silicone oil, silicone gum, vegetable oil, vegetable oil adduct, petrolatum, nonionic polymers, hydrogenated vegetable oils, natural waxes, synthetic waxes, polyolefinic glycols , polyolefinic monoester, polyolefinic polyesters, cholesterols, cholesterol esters and mixtures thereof; and wherein said water-soluble conditioning agent is selected from the group consisting of glycerin, propylene glycol, polypropylene glycols, polyethylene glycols, ethylhexanediol, hexylene glycols, other aliphatic alcohols, panthenol, urea, cationic polymers, polyols, glycolic acid, lactic acid, and mixtures thereof. Disposable personal care cleansing product according to any one of claims 9 to 12, characterized in that said conditioning emulsion comprises (a) an internal phase comprising a water-soluble treatment agent selected from one or more water-soluble agents such that the weighted arithmetic mean of the solubility parameter of said water-soluble treatment agent is greater than 10.5; and d) an outer phase comprising at least one fat-soluble modifying agent selected from one or more fat-soluble agents such that the weighted arithmetic mean of the solubility parameter of said water-soluble modifying agent is greater than 10.5. 14. The disposable personal care product of claim 13, further comprising from 0% to 20% by weight of said conditioning emulsion of an emulsifier capable of emulsifying said inner and outer phases, wherein said inner and outer phases are: ΦΦ φ · Φ · Φφφφ · · «4« Φ · 4 The emulsifier is selected from one or more emulsifiers such that the weighted arithmetic mean of the HLB value is 1 to 7. The disposable personal care cleansing product according to any one of claims 9 to 14, wherein said conditioning component has a surface coating to leakage ratio greater than or equal to 1.25 at any point on the surface of the substrate. The disposable personal care cleansing product according to any one of claims 9 to 15, wherein said conditioning component has a lipid hardness value greater than 0.02 kg. The disposable personal care product according to any one of claims 1 to 16, wherein said water-insoluble substrate comprises at least two layers of fibers having alternately different textures. The disposable personal care cleansing article of claim 17, wherein said water-insoluble substrate comprises at least one wet-extensible portion and at least a second wet-extensible portion than said first portion. 19. A disposable personal care product according to claim 17 or 18, wherein said water-insoluble substrate comprises: (a) an apertured first layer which, when wetted, is wet extensible in the plane of the first layer; and b) a second layer which, when wetted, is less extensible in wet conditions than said first layer; wherein selected portions of said first layer are bonded to said second layer in a manner sufficient to prevent said first layer from being wet when wet in the plane of said first layer. The disposable personal care product according to any one of claims 1 to 19, further comprising a safe and effective amount of one or more active ingredients selected from the group consisting of anti-acne active agents, active agents. • ·· ♦ X • * 99 9 « 9 9 • 9 X X • XXX 9 9 XXX • X • »X · XX 9 9 9 9 9 * · • 9 • 9 «X X • X X anti-wrinkle and skin atrophy, non-steroidal anti-inflammatory active agents, local anesthetics, artificial tan active agents and tan accelerators, antimicrobial and antifungal agents, sunscreen active agents, antioxidants and mixtures thereof. 21. A method of producing a disposable personal care cleansing product that stores a substance which is rinsed from the skin or hair, and which has the desirable imparting odor, by separately or simultaneously adding or impregnating on or into a water-insoluble substrate. water (a) at least one foaming surfactant, and b) a fragrance-release complex comprising 0.015 to 15% by weight of said water-insoluble substrate, comprising: i) 10 to 90% by weight of the complex of a porous fragrance carrier; and ii) 1 to 90% by weight of the complex of a fragrance impregnated in said carrier, wherein said product is thoroughly dry before use. 22. The method of claim 21 wherein said fragrance-release complex is coated with a substance selected from the group consisting of paraffin waxes, microcrystalline waxes, animal waxes, vegetable waxes, saturated fatty acids and fatty alcohols, fatty acid esters, esters. celluloses, polyalkylene glycol, polyvinyl alcohol and mixtures thereof, and wherein the coating is present in an amount of 2 to 50% by weight of the fragrance-releasing complex. 23. A method according to claim 21 or 22, further comprising adding or impregnating on or into the water-insoluble substrate a pure fragrance of from 0.1 to 10% by weight of the substrate, separately or simultaneously.