MXPA99010791A - Cleansing products with improved moisturization - Google Patents

Cleansing products with improved moisturization

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Publication number
MXPA99010791A
MXPA99010791A MXPA/A/1999/010791A MX9910791A MXPA99010791A MX PA99010791 A MXPA99010791 A MX PA99010791A MX 9910791 A MX9910791 A MX 9910791A MX PA99010791 A MXPA99010791 A MX PA99010791A
Authority
MX
Mexico
Prior art keywords
water
conditioning
soluble
oil
skin
Prior art date
Application number
MXPA/A/1999/010791A
Other languages
Spanish (es)
Inventor
John Fowler Timothy
Ann Wagner Julie
John Hasenoehrl Erik
Original Assignee
The Procter & Gamble Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Procter & Gamble Company filed Critical The Procter & Gamble Company
Publication of MXPA99010791A publication Critical patent/MXPA99010791A/en

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Abstract

The present invention relates to a substantially dry, disposable, personal cleansing product useful for both cleansing and conditioning the skin or hair. These products are used by the consumer by wetting the dry product with water. The product comprises of a water insoluble substrate, a lathering surfactant, and a conditioning emulsion. The invention also encompasses methods for cleansing and conditioning the skin or hair using these products and to methods for manufacturing these products.

Description

PERSONAL CLEANING PRODUCTS WITH IMPROVED HUMECTATION TECHNICAL FIELD The present invention relates to a substantially dry and disposable personal cleansing product useful both for cleaning and conditioning the skin or hair. These products are used by the consumer by moistening the dry product with water. The product comprises a water-insoluble substrate, a foaming surfactant and a conditioning emulsion comprising (i) an external phase comprising an oil-soluble agent and (ii) an internal phase comprising a water-soluble conditioning agent. The product effectively delivers water-soluble conditioning agents to the skin or hair. The use of the substrate increases foam formation at low levels of surfactant, increases cleaning and exfoliation, and optimizes the delivery and deposition of water soluble conditioning ingredients. As a result, this invention provides effective cleaning using low levels of surfactant, and is therefore less irritating, while providing superior conditioning benefits by providing both water-soluble conditioning agents and oil-soluble conditioning agents.
The invention also encompasses products comprising various active ingredients to be provided to the skin or hair. The invention also encompasses a method for cleaning and moisturizing the skin and hair using the products of the present invention, and also methods for making these products.
BACKGROUND OF THE INVENTION Personal cleansing products have traditionally been marketed in a variety of forms such as bar soaps, creams, lotions, and gels. These cleaning formulations have tried to satisfy a number of criteria that consumers accept. These criteria include effectiveness in terms of cleanliness, skin sensation, softness to the skin, hair, and ocular mucosa and volume of foam. Ideal personal cleansers should gently cleanse the skin or hair, causing little or no irritation, and without leaving the skin or hair dry after frequent use. However, these traditional forms of personal cleansing products have the inherent problem of balancing cleaning efficiency rather than providing a conditioning benefit. One solution to this problem is to use cleaning products and conditioners separately. However, this is not always convenient or practical and many consumers prefer to use an individual product that can both cleanse and condition the skin or hair. In a typical cleaning composition the conditioning ingredients are difficult to formulate since many conditioners are incompatible with the surfactants resulting in an inhomogeneous non-homogeneous mixture. To obtain a homogeneous mixture with conditioning ingredients, and to avoid the loss of conditioning ingredients, before the deposition, additional ingredients, for example emulsifiers, thickeners and gelling agents are often added to suspend the conditioning ingredients within the surfactant mixture. This results in an aesthetically pleasing homogeneous blend, but often causes poor deposition of the conditioning ingredients, since the conditioners are emulsified and not released efficiently during cleaning. Also, many conditioning agents have the disadvantage of producing little foam. The suppression of foam is a problem since many consumers look for cleaning products that provide rich, creamy and smooth foam. In addition, traditional formulations have been very ineffective in depositing water-soluble conditioning agents on the skin or hair. It is desirable to deposit both oil-soluble conditioning agents (e.g., emollients and lipids) as water-soluble conditioning agents (e.g., humectants) on the skin to maximize acute and chronic skin conditioning benefits. With suitable formulation techniques, oil-soluble conditioning agents can be deposited on the skin or hair due to their inherent hydrophobic nature. However, the deposition of water-soluble conditioning agents with traditional cleaners is commonly difficult because the water-soluble conditioning agents are flushed out typically leaving only a deposition of hydrophobic agents. Attempts have been made to deposit water-soluble conditioning agents through the use of various emulsions (for example, a water-in-oil-in-water emulsion). Although it is theoretically possible, this approach has been difficult to implement due to poor long-term shelf stability and aesthetics of the product. The present invention eliminates this paradigm, since the surfactants and the conditioning agents can be added separately directly on the substrate. In this manner, the water soluble conditioning agents can be simply emulsified in an oil soluble agent and added to the substrate. This simple emulsion remains stable on the substrate and prevents the water-soluble conditioning agent from being flushed out during the cleaning process because the water-soluble conditioner is protected within the emulsion. As a result, the present invention effectively deposits conditioning agents soluble in both oil and water on the skin and hair.
Therefore, it is observed that conventional cleaning products that attempt to combine surfactants and water soluble soluble conditioning ingredients suffer from disadvantages inherently resulting from the incompatibilities of surfactants, water soluble conditioning agents and soluble conditioning agents. in oil. There is clearly a need to develop personal cleansing systems that provide effective cleaning and also deposit conditioning agents soluble in both oil and water in a single product. It is also desired to provide cleaning and conditioning benefits from a disposable and single-use product. Disposable products are convenient since they avoid the need to use bottles, bars, jars, tubes and other forms of both cleaning and conditioning products, which are difficult to handle. Disposable products are also a more hygienic alternative to the use of a sponge, cloth, or other cleaning increase for frequent use, since such implements develop bacteria growth, unpleasant odors, and other undesirable characteristics related to frequent use . It has been surprisingly found in the present invention that products can be developed to provide effective cleaning and conditioning, in a disposable, hygienic, convenient, cost-effective personal cleansing product. The present invention provides the benefit of not having the need to use cleaning products and conditioners separately. It is very convenient to use the present invention since it is in the form of a substantially dry product which is moistened before being used. The present invention relates to a disposable, dry personal cleaning product, useful both for cleaning and for conditioning the skin or hair. These products are used by the consumer when moistening the dry product with water. The product consists of a water-insoluble substrate, a surfactant, and a conditioning component. Without being limited by theory, it is believed that the substrate increases foaming at low levels of the surfactant, increases cleaning and exfoliation, and optimizes the proportion and deposition of the water and oil soluble conditioning ingredients. As a result, this invention provides effective cleaning using low levels of surfactant and therefore less irritating while providing superior conditioning benefits. It has also been found that these products are useful for providing a wide variety of active ingredients to the skin or hair during the cleaning process. It is therefore an object of the present invention to provide substantially dry products both for cleaning and conditioning the skin or hair where the products are used in combination with water. Another object of the present invention is to provide products that supply conditioning agents soluble in both water and oil to the skin or hair.
Another object of the present invention is to provide products that supply water-soluble conditioning agents to the skin or hair. Another object of the present invention is to provide products comprising a water-insoluble substrate, a surfactant and a conditioning emulsion. It is another object of the present invention to provide products that are disposable and for single use only. It is another object of the present invention to provide products that are soft to the skin or hair. Another object of the present invention is to provide products that are useful for providing active ingredients to the skin or hair during the cleaning or conditioning process. It is another object of the present invention to provide cleaning and conditioning methods for the skin or hair. It is another object of the present invention to provide methods for manufacturing the products of the present invention. This and other objects of the invention will be apparent in the following description.
BRIEF DESCRIPTION OF THE INVENTION The present invention relates to a disposable, disposable personal care cleaning and conditioning product comprising: (A) a water insoluble substrate, (B) a foaming surfactant, (C) a conditioning component, wherein said product is substantially dry. In further embodiments, the present invention relates to a disposable and disposable personal care cleaning and conditioning product comprising: (A) a water insoluble substrate, (B) a foaming surfactant and ( C) a conditioning emulsion comprising: (i) an internal phase comprising a water-soluble conditioning agent and (ii) an external phase comprising an oil-soluble agent, wherein said foam-forming surfactant and said conditioning emulsion is added separately or simultaneously on or impregnated in said water-insoluble substrate, and wherein said product is substantially dry.
In further embodiments, the present invention relates to a method for manufacturing a disposable, disposable, disposable personal care cleaning and conditioning product comprising the step of adding or impregnating separately or simultaneously into a water insoluble substrate (A ) a foaming surfactant, and (B) a conditioning component, comprising (i) an internal phase comprising a water-soluble conditioning agent and (i) an external phase comprising an oil-soluble agent, and wherein said product is substantially dry. In further embodiments, the present invention further comprises an emulsifier capable of forming an emulsion of said internal and external phase. In additional embodiments, the present invention relates to methods for cleaning and conditioning the skin or hair with the personal cleansing products described herein. In still further embodiments, the present invention relates to methods for depositing conditioning agents on the skin or hair. All percentages and ratios used herein, unless otherwise indicated, are by weight, and all measurements made are at 25 ° C, unless otherwise indicated. The present invention may comprise, consist of or consist essentially of, the essential ingredients, as well as optional ingredients and components described herein.
DETAILED DESCRIPTION OF THE INVENTION The personal cleansing products of the present invention are very effective in cleaning the skin or hair, however, they provide effective deposition of water soluble conditioning agents. The products may also contain other active ingredients to be deposited on the skin or hair. Without being limited by theory it is believed that the substrate contributes significantly to the production of foam and deposition of conditioning agents and other active ingredients. It is believed that this increase in foam is the result of the action of the surface of the substrate. As a result, significantly lower, milder amounts of surfactants can be employed. The decreased amount of surfactants required is believed to be related to the decrease in the drying effect of the skin or hair by means of the surfactants. In addition, the decreased amount of surfactants dramatically decreases the inhibitory action (eg by means of emulsification or direct removal by means of the surfactants) of surfactants for the deposition of conditioning agents.
Without being limited by theory, the substrate also increases the deposition of active ingredients and conditioning agents, in addition to the conditioning agents in the conditioning emulsion. Since the invention is in dry form, it does not require emulsifiers to make the product homogeneous, which inhibit the deposition of conditioning agents and active ingredients. In addition, since the skin conditioners are dried or impregnated into the substrate, they are transferred directly to the skin or hair by contacting the surface of the moistened product with the skin. Finally, the substrate also increases cleaning. The substrate may have textures that differ on each side, for example, a rough side and a smooth side. The substrate acts as an effective exfoliating and foaming implement. By physically contacting skin or hair, the substrate significantly helps to clean and remove dirt, makeup, dead cells, and other debris. By a "foaming surfactant" is meant a surfactant which, when combined with water and stirred mechanically, generates foam. Preferably these surfactants should be soft, which means that the surfactants provide sufficient cleaning or detersive benefits but do not dry the skin or hair, and therefore meet the foaming criteria described above.
The terms "disposable" or "single-use" are used herein in their ordinary sense to define a product that is discarded after a single use. The term "activated with water" as used herein, means that the present invention is presented to the consumer in dry form for use after moistening with water. It has been found that these products produce a foam or that they "activate" on contact with water and further agitation. The term "substantially dry" as used herein, means that the product is substantially free of water and generally feels dry on contact with the skin. The products of the present invention comprise less than 15% by weight of water, preferably less than about 7.5% by weight of water, and most preferably less than about 3% by weight of water, the foregoing was measured in a dry environment, by example with little humidity. Those skilled in the art will recognize that the water content of a product such as that of the present invention may vary with the relative humidity of the environment. The term "conditioning emulsion" as used herein means the combination of an internal phase comprising a water-soluble conditioning agent that is enveloped by an external phase comprising an oil-soluble agent. In preferred embodiments, the conditioning emulsion could further comprise an emulsifier.
The term "soft" as used herein, in relation to the foaming surfactants and products of the present invention, means that the products of the present invention demonstrate skin smoothness comparable to a mild alkyl glyceryl ether sulfonate (AGS) surfactant to Synthetic bar base, ie synbar. The methods for measuring the softness, or inversely the irritability, of the products containing surfactants, are based on a test of destruction of the skin barrier. In this test, the milder the surfactant, the less destruction the skin barrier will suffer. The destruction of the skin barrier is measured by a relative amount of water (3H-H2O) labeled with radium (labeled with titanium), which passes from the test solution through the epidermis of the skin to the regulator of the skin. Physiological pH contained in the chamber of diffused material. This test is described by T. J. Franz in J. Invest. Dermatol., 1975, 64, pp. 190-195; and in the patent of E.U.A. No. 4,673,525, to Small et al., Filed June 16, 1987, both incorporated by reference in their entirety herein. Other test methodologies may also be used to determine the smoothness of surfactants well known to those skilled in the art. The personal care products of the present invention comprise the following essential components: a water insoluble substrate; a foaming surfactant and a conditioning emulsion. Additional active ingredients may also be included either on the substrate or within the emulsion. In addition, the conditioning agents described in the conditioning emulsion section below can be added to the substrate separately from the conditioning emulsion. An alternative method that is preferred is to apply the surfactant, conditioning emulsion and additional active ingredient separately to the substrate.
SUBSTRATE INSOLUBLE IN WATER The products of the present invention comprise a water insoluble substrate. By "insoluble in water" it is meant that the substrate does not dissolve in or is rapidly removed by immersion in water. This water-insoluble substrate is the implement or vehicle for providing the foaming surfactant and conditioning component of the present invention to the skin or hair to be cleaned and conditioned. Without being limited by theory, it is believed that the substrate, by providing mechanical agitation it provides an effect that generates foam and also helps in the deposition of the conditioning component. A wide variety of materials can be used as a substrate. The following non-limiting characteristics are desired: (i) sufficient moisture resistance to be used, (ii) sufficient wear, (iii) sufficient bulge and porosity, (iv) sufficient thickness, and (v) appropriate size. Non-limiting examples of suitable insoluble substrates that meet the foregoing criteria include non-woven substrates, woven substrates, hydroentangled substrates, air-entangled substrates, natural sponges, synthetic sponges, entangled polymer meshes, and the like. Preferred embodiments employ non-woven substrates since they are inexpensive and readily disposable in a variety of materials. By "non-woven" is meant that the layer is composed of fibers that are not woven into a fabric but rather are formed into a sheet, mat or pad layer. The fibers may be either random (i.e., randomly aligned) or may be carded (i.e. combed to be oriented primarily in one direction) In addition, the non-woven substrate may be composed of a combination of random and carded fiber layers. Non-woven substrates can be comprised of a variety of both natural and synthetic materials, by natural means that the materials are derived from plants, animals, insects or by-products of plants, animals and insects. they are obtained mainly from man-made materials or from natural materials that have been altered The conventional base raw material is generally a fibrous web comprising any of the natural or synthetic textile length fibers, or mixtures thereof Non-limiting examples of natural materials useful in the present invention are thirst fibers a, keratin fibers and cellulosic fibers. Non-limiting examples of keratin fibers include those that are selected from a group consisting of wool fibers, camel wool fibers, and the like. Non-limiting examples of cellulosic fibers include those selected from a group consisting of wood 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 a 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. Examples of some of these synthetic materials include acrylics such as acrilan, creslan and acrylonitrile-based fiber, orlon; cellulose ester fibers such as cellulose acetate, arnel, and accelerate; polyamides such as nylons (e.g., nylon 6, nylon 66, nylon 610, and the like); polyesters such as fortrel, codel, and polyethylene terephthalate fiber, dacron; polyolefins such as polypropylene, polyethylene; polyvinylacetate fibers; polyurethane foams and mixtures thereof. These and other suitable fibers and nonwovens prepared in this way are generally described in Riedel, "Nonwoven Bonding Methods and Materials." Nonwoven World (1987); The American Encvclopedia, vol. 1 1, pp. 147-153, and vol. 26, pp. 566-581 (1984); patent of E.U.A. No. 4,891, 227, to Thamam et al., Issued January 2, 1990; and the patent of E.U.A. No. 4,891, 228 which are incorporated by reference herein in their entirety.
Nonwoven substrates made of natural materials consist of bands or sheets commonly formed on a thin wire screen formed from a liquid suspension of the fibers. See C.A. Hampel et al .; The Encvclopedia of Chemistrv, Third Edition, 1973, pp. 793-795 (1973); The American Encvclopedia, vol. 21, pp. 376-383 (1984); and G. A. Smook, Handbook of Pulp and Paper Technologies, Technical Association for the Pulp and Paper Industry (1986); which are incorporated by reference herein in their entirety. Substrates made of natural materials useful in the present invention can be obtained from a wide variety of commercial resources. Non-limiting examples of suitable commercially available paper layers useful herein include Airtex®, an enhanced, air-laid cellulosic layer having a basis weight of about 85.2 g / m2, available from James River, Green Bay, Wl; and Walkisoft®, a raised, airlaid cellulosic having a basis weight of about 90 g / m2, available from Waikisoft E.U.A., Mount Holly, NC. Methods for making nonwoven substrates are well known in the art. Generally, these nonwoven substrates can be made by airlaying, spreading in water, blowing under melting, coformming, spun bonding or carding processes in which the fibers or filaments are first cut to the desired lengths from the strands. long, they are passed through a stream of water or air, and subsequently deposited on the screen through which passes air or water loaded with fiber. The resulting layer, in spite of its production method or composition, is subsequently subjected to at least one of all types of bonding operations to secure the individual fibers to form a band that stands on its own. In the present invention, the non-woven layer can be prepared by a variety of processes including hydroentangling, thermally bonded or thermobonding, and combinations of these processes. In addition, the substrates of the present invention can consist of a single layer or multiple layers. In addition, a multi-layer substrate may include films and other non-fibrous materials. Nonwoven substrates made of synthetic materials useful in the present invention can also be obtained from a wide variety of commercial resources. Non-limiting examples of suitable nonwoven layer materials useful herein include HEF 40-047, a hydroentangled material with aperture containing about 50% rayon and 50% polyester, having a basis weight of about 51.60 gr / m2 (gsy), available from Veratec, Inc., Walpole, MA; HEF 140-102, a hydroentangled material with aperture containing about 50% rayon and 50% polyester, and having a basis weight of about 67.20 g / m2, available from Veratec, Inc. Walpole, MA; Novonet® 149-616 a thermally bonded grid pattern material containing about 100% polypropylene, and having a basis weight of about 60 g / m2, available from Veratec, Inc. Walpole, MA; Novonet® 149-801, a thermally bonded grid pattern material containing about 69% rayon, about 25% polypropylene and about 6% cotton, and has a basis weight of about 90 g / m2, available in Veratec, Inc. Walpole, MA; Novonet® 149-191, a thermally bonded grid pattern material containing about 69% rayon, about 25% polypropylene, and about 6% cotton, and has a basis weight of about 120 g / m2, available at Veratec, Inc. Walpole, MA; HEF Nubtex® 149-801, a hydroentangled material with clustered openings, containing about 100% polyester, and having a basis weight of about 84 g / m2, available from Veratec, Inc. Walpole, MA; Keybak® 951 V, a material with openings formed in dry, containing about 75% rayon, about 25% acrylic fibers, and having a basis weight of about 51.6 g / m2, available in Chicopee, New Brunswick, NJ; Keybak® 1368, an apertured material, containing about 75% rayon, about 25% polyester, and having a basis weight of about 46.8 g / m2, available from Chicopee, New Brunswick, NJ; Duralace® 1236, a hydroentangled material with openings, containing about 100% rayon, and having a basis weight of about 48 g / m2 to about 138 g / m2, available from Chicopee, New Brunswick, NJ; Duralace® 5904, a hydroentangled material with openings containing about 100% polyester, and having a basis weight of about 48 g / m2 to about 138 g / m2, available from Chicopee, New Brunswick, NJ; Sontaro 8868, a hydroentangled material containing about 50% cellulose and about 50% polyester, and having a basis weight of about 72 g / m2, available from Dupont Chemical Corp. Likewise, the water insoluble substrate it may be a polymeric mesh sponge as described in European Patent No. EP 702550 A1 published on March 27, 1996 incorporated by reference herein in its entirety. This polymeric sponge comprises a plurality of folds of an extruded tubular network mesh prepared from a strong flexible polymer, such as the addition of polymers of olefin monomers and polycarboxylic acid polyamides. Although these polymeric sponges are designed to be used in conjunction with a liquid cleaner, these types of sponges can be used as the water-insoluble substrate in the present invention. The substrate can be made in a variety of shapes, including flat pads, thick pads, thin sheets, spherical implements, irregular implements, and have sizes ranging from a surface area of about one square centimeters to about of hundreds of square centimeters. The exact size will depend on the desired use and characteristics of the product. Square, circular, rectangular or oval shaped pads are especially convenient having a surface area of about 6.45 cm2 to about 928.8 cm2, preferably about 64.5 cm2 to about 774 cm2, and most preferably about 193.5 cm2 to about 516 cm2, and a thickness of about 25.40 microns to about 12700 microns, preferably from about 127 microns to about 6350 microns, and most preferably from about 254 microns to about 2540 microns. The water-insoluble substrates of the present invention can comprise two or more layers, each having different textures and abrasive capabilities. The textures that differ can be the result of the use of different combinations of materials or the use of different manufacturing processes or a combination of these. A doubly textured substrate can be made to provide the advantage of having a more abrasive side for exfoliation and a soft, absorbent side for gentle cleaning. In addition, separate layers of the substrate can be manufactured to have different colors, thereby helping the user to further distinguish the surfaces.
SPURIOUS SURGICAL AGENT The products of the present invention comprise from about 0.5% to about 40%, preferably from about 0. 75% to about 20%, and most preferably from about 1% to about 10% based on the weight of the water-insoluble substrate, of a foaming surfactant. By "foaming surfactant" is meant a surfactant which, when combined with water and mechanically stirred, generates foam. Preferably, these surfactants must be soft, which means that the surfactants provide sufficient cleaning or detersive benefits but do not dry the skin or hair, and therefore meet the foaming criteria described above. A wide variety of foaming surfactants are useful herein and include those selected from the group consisting of anionic foaming surfactants, nonionic foaming surfactants, amphoteric surfactants, and mixtures thereof. The cationic surfactants can also be used as optional components, since they do not negatively impact all the foaming characteristics of the required foaming surfactants.
Anionic Foaming Surfactants Non-limiting examples of anionic foaming surfactants useful in the compositions of the present invention are set forth in McCutcheon's, Deterqents and Emulsifiers, North American Edition (1986), published by Publishing Corporation; McCutcheon's, Functional Materials, North American Edition (1992) and the patent of E.U.A. No. 3,929,678 to Laughlin et al., Filed December 30, 1975, which are incorporated by reference herein in their entirety. A wide variety of anionic foaming surfactants may be useful. Non-limiting examples of anionic surfactants include those selected from the group consisting of sarcosinates, sulfates, isethionates, taurates, phosphates, and mixtures thereof. Among the isethionates, the alkylisethionates are preferred and among the sulphates, the alkyl sulfates and alkyl ether sulfates are preferred. Alkyl isethionates typically have the formula RCO-OCH 2 CH 2 SO 3 M wherein R is alkyl or alkenyl of about 10 to about 30 carbon atoms, and M is a water-soluble cation such as ammonium, sodium, potassium and triethanolamine. Non-limiting examples of these isethionates include the alkylisethionates selected from the group consisting of ammonium cocoyl isethionate, sodium cocoyl isethionate, sodium lauroyl isethionate and mixtures thereof. Alkyl sulfates and alkyl ether sulphates typically have the formulas ROSO3M and RO (C2H4?) XS? 3M, wherein R is alkyl or alkenyl of about 10 to about 30 carbon atoms, x is 1 to about 10, and M is a cation soluble in water such as ammonium, sodium, potassium, and triethanolamine. Another class of suitable anionic surfactants is the water soluble salt of the organic, sulfuric acid reaction products of the general formula: R1-SO3-M wherein R1 is selected from the group consisting of straight or branched chain, saturated aliphatic hydrocarbon radical having from about 8 to about 24, preferably from 10 to about 16 carbon atoms; and M is a cation. Other synthetic anionic surfactants include the class designated as succinamates, olefin sulphonates having from about 12 to about 24 carbon atoms and b-alkyloxy alkane sulfonates. Examples of these materials are sodium lauryl sulfate and ammonium lauryl sulfate. Other anionic materials useful in this invention are fatty acid soaps (eg, alkali metal salts, ie, sodium or potassium salts), which typically have from about 8 to about 24 carbon atoms, preferably about 10 carbon atoms. to about 20 carbon atoms. The fatty acids used for the manufacture of soaps can be obtained from natural sources such as, glycerides derived from plants or animals (for example, palm oil, coconut oil, soybean oil, castor oil, tallow, lard, etc.). Fatty acids can be prepared synthetically. The soaps are described in more detail in the U.S. patent. No. 4,557,853, mentioned above. Other anionic materials include phosphates such as monoalkyl phosphate, dialkyl phosphate and trialkyl phosphate salts. Other anionic materials include alkanoylsarcosinates corresponding to the formula RCON (CH3) CH2CH2C? 2M wherein R is alkyl or alkenyl of about 10 to about 20 carbon atoms, and M is a water soluble cation such as ammonium, sodium, potassium and trialkanolamine (ie, triethanolamine), a preferred example is sodium lauryl sarcosinate, sodium cocoyl sarcosinate, and ammonium lauroyl sarcosinate.
Also useful are taurates which are based on taurine, which is also known as 2-aminoethanesulfonic acid. Taurates having carbon chains between C8 and C-iß are especially useful. Examples of taurates include N-alkyltaurines such as that prepared by reacting dodecylamine with sodium isethionate according to the teaching of the U.S. patent. No. 2,658,072 which is incorporated herein by reference in its entirety. Additional non-limiting examples include the ammonium, sodium, potassium and alkanolamine salts (eg, triethanolamine) of lauroylmethyltaurate, myristoylmethyltaurate and cocometiltaurate. Lactylates are also useful, especially those that have carbon chains between Cs and C-? 6. Non-limiting examples of lactylates include the ammonium, sodium, potassium and alkanolamine salts (eg, triethanolamine) of lauroyl lactylate, cocoyl lactylate and caproyl lactylate. The glutamates, especially those having carbon chains between Ce and Cie, are also useful herein as anionic surfactants. Non-limiting examples of glutamates include the ammonium, sodium, potassium and alkanolamine salts (eg, triethanolamine) of lauroylglutamate, myristoylglutamate and cocoylglutamate. Non-limiting examples of preferred anionic foaming surfactants are those selected from the group consisting of sodium lauryl sulfate, ammonium lauryl sulfate, ammonium laureth sulfate, sodium laureth sulfate, sodium tridecetsulfate, ammonium cetyl sulfate, sodium cetyl sulfate, ammonium cocoyl setionate, lauroyl isethionate. sodium, sodium lauroylactylate, triethanolamine lauroylactylate, sodium caprolatectylate, sodium lauroyl sarcosinate, sodium myristoyl sarcosinate, sodium lauroylmethyltaurate, sodium cocoylmetaurate, sodium lauroylglutamate, sodium myristoylglutamate and sodium cocoylglutamate and mixtures thereof. For use herein, ammonium lauryl sulfate, ammonium laurethulfate, sodium lauroylactylate and triethanolamine lauroylactylate are preferred.
Nonionic foaming surfactants Non-limiting examples of nonionic foaming surfactants for use in the compositions herein are described in McCutcheon's. Deterqents and Emulsifiers, North American Edition (1986), published by allured Publishing Corporation; and McCutcheon's, Functional Materials, North American Edition (1992); both are incorporated herein by reference in their entirety. Nonionic foaming surfactants used herein include those selected consisting of alkyl glucosides, alkyl polyglucosides, polyhydroxy fatty acid amides, alkoxylated fatty acid amides, sucrose esters, amine oxides, and mixtures thereof. The alkyl glucosides and alkyl polyglucosides are useful herein, and can be broadly defined as condensation products of long chains of alcohols, ie, C8-30 alcohols, with sugars or starches, or sugar or starch polymers, ie, polyglycoside glycosides . These compounds can be represented by the formula (S) nOR wherein S is a sugar portion such as glucose, fructose, mannose, and galactose, n is an integer from about 1 to about 1000, and R is an alkyl group of C8. -30. Examples of long chain alcohols from which the alkyl group may be derived include decyl alcohol, cetyl alcohol, stearyl alcohol, lauryl alcohol, myristyl alcohol, oleyl alcohol, and the like. Preferred examples of these surfactants include those wherein S is a glucose portion, R is an alkyl group of C8-20, and n is an integer of about 1 about 9. Commercially available examples of these surfactants include decyl polyglucoside (available as APG 325 CS from Henkel) and lauryl polyglucoside (available as APG 600CS and 625 CS from Henkel). Sucrose ester surfactants, such as sucrose cocoate and sucrose laurate, can also be used. Other useful nonionic surfactants include polyhydroxy fatty acid amide surfactants, more specific examples include glucosamide, which correspond to the structural formula: wherein R1 is H, CrC4 alkyl, 2-hydroxyethyl, 2-hydroxypropyl, preferably C-t-C alkyl, most preferably ethyl or methyl, most preferably methyl; R2 is C5-C3-1 alkyl or alkenyl, preferably C7-C9 alkyl or alkenyl, most preferably C9-C17 alkyl or alkenyl, most preferably C-11-C15 alkyl or alkenyl; and Z is a polyhydroxyhydrocarbyl moiety having a straight hydrocarbyl chain of at least 3 hydroxyls directly connected to the chain, or an alkoxylated derivative (preferably ethoxylated or propoxylated). Z preferably is a sugar portion selected from the group consisting of glucose, fructose, maltose, lactose, galactose, mannose, xylose, and mixtures thereof. An especially preferred surfactant corresponding to the above structure is cocoalkyl-N-methylglucosamide (ie wherein the R2CO portion is derived from coconut oil fatty acids). Methods for making compositions containing polyhydroxy fatty acid amides are described, for example, in British Patent Specification 809,060, published February 18, 1959 by Thomas Hedley & Co., Ltd .; the patent of E.U.A. No. 2,965,576 to E.R. Wilson, published on December 20, 1960; the patent of E.U.A. No. 2,703,798, to A.M. Schwartz, published on March 8, 1955; and the patent of E.U.A. No. 1, 985,424 to Piggott, published on December 25, 1934; which are incorporated herein by reference in their entirety. Other examples of nonionic surfactants include amine oxides. The amine oxides correspond to the general formula R1R2R3NO. Where R1 contains an alkyl, alkenyl or monohydroxyalkyl radical of from about 8 to about 18 carbon atoms, from about 0 to about 10 portions of ethylene oxide, and from 0 to about a glyceryl portion, and R2 and R3 contain about from 1 to about 3 carbon atoms and from 0 to 1 hydroxy group, for example, methyl, ethyl, propyl, hydroxyethyl, or hydroxypropyl radicals. The date in the formula is a conventional representation of a semipolar link. Examples of amine oxides suitable for use in this invention include dimethyldodecylamine oxides, oleyl (2-hydroxyethyl) amine oxide, dimethyloctylamine oxide, dimethyl-decylamine oxide, dimethyl-tetradecylamine oxide, 3,6,9-oxide. -trioxaheptadecyldietylamine, di (2-hydroxyethyl) -tetradecylamine oxide, 2-dodecoxyethyldimethylamine oxide, 3-dodecoxy-2-hydroxypropyldi (3-hydroxypropyl) amine oxide, dimethylhexadecylamine oxide. Non-limiting examples of preferred nonionic surfactants are those selected from the group consisting of C8-14 glucosamide, C8-14 alkyl polyglycosides, sucrose cocoate, sucrose laurate, lauramine oxide, cocoamine oxide and mixtures thereof.
Amphoteric Foaming Surfactants The term "amphoteric foaming surfactant", as used herein, is also intended to encompass zwitterionic surfactants, which are well known to those skilled in the art as a subgroup of amphoteric surfactants.
A wide variety of amphoteric foaming surfactants can be used in the compositions of the present invention. Particularly useful are those broadly described as derivatives of secondary and tertiary aliphatic amines, preferably wherein the nitrogen is in the cationic state, wherein the aliphatic radicals can be straight or branched chain and wherein the radicals contain a water solubilization group. ionizable, that is, carboxy, sulfonate, sulfate, phosphate, or phosphonate. Non-limiting examples of amphoteric surfactants useful in the compositions of the present invention are set forth in McCutcheon's, Detergents and Emulsifiers. North American Edition (1986), published by allured Publishing Corporation; and McCutcheon's. Functional Materials, North American Edition (1992), both incorporated by reference in the present in its entirety. Non-limiting examples of amphoteric or zwitterionic surfactants are those selected from the group consisting of betaines, sultaines, hydroxysultaines, alkyliminoacetates, iminodialkanoates, aminoalkanoates, and mixtures thereof. Examples of betaines include alkyl betaines such as coco dimethyl carboxymethyl betaine higher, laurildimetilcarboximetilbetaína, laurildimetilalfacarboxietilbetaína, cetildimetilcarboximetilbetaína, cetyl dimethyl betaine (available as Lonzaine 16SP from Lonza Corp.), lauryl bis- (2-hydroxyethyl) carboxymethyl betaine, oleildimetilgamma-carboxypropyl, lauryl bis- (2-hydroxypropyl) alpha- carboxyethylbetaine, cocodimethylsulfopropylbetaine, lauryldimethylsulfoethylbetaine, laurylbis- (2-hydroxyethyl) sulfopropybetaine, amidobetaines and amidosulfobetaines (wherein the radical RCONH (CH2) 3 is bonded to the nitrogen atom of betaine), oleylbetaine (available as amphoteric Velvetex OLB-50 Henkel), and cocamidopropylbetaine (available as Velvetex BK-35 and BA-35 from Henkel). Examples of sultaines and hydroxysultains include materials such as cocamidopropylhydroxysultaine (available as Mirataine CBS from Rhone-Poulenc). The use of amphoteric surfactants having the following structure is preferred: OR II R1- (c- NH- (CH2) m) n- N r-2 R4- -X R3 wherein R1 is a straight or branched chain of unsubstituted saturated or unsaturated alkyl having from about 9 to about 22 carbon atoms. Preferred R1 have about 11 about 18 carbon atoms; and most preferably about 12 to 18 carbon atoms; still very preferably from about 14 to about 18 carbon atoms; m is an integer from 1 to 3, most preferably from about 2 about 3, and most preferably about 3; n is 0 or 1, preferably 1; R2 and R3 are independently selected from the group consisting of alkyl having from 1 to about 3 carbon atoms, unsubstituted or monosubstituted with hydroxy, preferred R2 and R3 are CH3; X is selected from the group consisting of CO2, SO3 and SO4; R4 was selected from the group consisting of a straight or branched chain of saturated or unsaturated alkyl, unsubstituted or monosubstituted with hydroxy, having from 1 to about 5 carbon atoms. When X is CO2, R4 preferably has from 1 to 3 carbon atoms, most preferably 1 carbon atom. When X is SO3 or SO4, R4 preferably has from 2 to about 4 carbon atoms, most preferably 3 carbon atoms. Examples of amphoteric surfactants of the present invention include the following compounds: Cetyldimethylbetaine (this material also has the CTFA designation of cetylbetaine) C1 cocamidopropylbetaine where R has about 9 about 13 carbon atoms Cocamidopropylhydroxysultaine wherein R has from about 9 to about 13 carbon atoms. Examples of other amphoteric surfactants used are alkyliminoacetates, and iodomodialkanoates and aminoalkanoates of the formula RN [CH2) mCO2Mj2 and RNH (CH2) mCO2M wherein m is from 1 to 4, R is a 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-dodecylaminopropanesulphonate, higher N-alkylapartic acids such as those produced in accordance with the disclosure of the US patent. 2,438,091 which are incorporated herein by reference in its entirety; and the products sold under the trademark "Miranol" and described in the patent of E.U.A. 2,528,378, which are incorporated herein by reference in their entirety. Other examples of amphoteric used include amphoteric phosphates, such as coamidopropyl PG-dimonium chloride phosphates (commercially available as Manaquat PTC, from Mona Corp). Also useful are amphoacetates such as disodium lauroamphodiacetate, and sodium lauroamphoacetate and mixtures thereof. The preferred foaming surfactants for use herein are the following, wherein the anionic foaming surfactant is selected from the group consisting of ammonium lauroyl sarcosinate, sodium tridecetsulfate, sodium lauroyl sarcosinate, sodium laureth sulfate, ammonium lauryl sulfate, sodium lauryl sulfate. , ammonium cocoyl isethionate, sodium cocoyl isethionate, sodium lauroyl isethionate, sodium cetyl sulfate, sodium lauroyl acetylate, triethanolamide lauroylactylate, and mixtures thereof; wherein the nonionic foaming surfactant is selected from the group consisting of lauramine oxide, cocoamine oxide, decyl polyglucose, lauryl polyglucose, sucrose cocoate, C12-14 glucosamides, sucrose laurate, and mixtures thereof; and wherein the amphoteric foaming surfactant is selected from the group consisting of disodium lauroamphodiacetate, sodium lauroamphoacetate, cetyldimethylbetaine, cocoamidopropylbetaine, cocoamidopropylhydroxysulphataine, and mixtures thereof.
CONDITIONER EMULSIONS The products of the present invention comprise a conditioning emulsion which is useful for providing a conditioning benefit to the skin or hair during the use of the product. This conditioning component comprises from about 0.25% to about 150%, preferably from about 0.5% to about 100%, and most preferably from about 1% to about 50% by weight of said water-insoluble substrate. By a conditioning emulsion is meant a combination of an internal phase comprising a water-soluble conditioning agent that is wrapped by an external phase comprising an oil-soluble agent. In preferred embodiments, the conditioning emulsion could further comprise an emulsifier. The conditioning emulsion of the present invention comprises (i) an internal phase comprising water-soluble conditioning agents and (ii) an external phase comprising oil-soluble agents. In further 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 an emulsion of the internal and external phases is preferred in the present invention, it is recognized in the art of skin care formulations that a water-soluble conditioning agent may be enveloped by an oil-soluble agent. without an emulsifier. As long as the water-soluble conditioning agent is enveloped by the oil-soluble agent, then protected from being rinsed during the cleaning process, the composition will be within the scope of the present invention.
The oil-soluble agent is selected from one or more oil-soluble agents so that the weighted average arithmetic solubility parameter of the oil-soluble agent is less than or equal to 10.5. The water-soluble conditioning agent is selected from one or more water-soluble conditioning agents so that the weighted average arithmetic solubility parameter of the water-soluble conditioning agent is greater than 10.5. It is recognized, based on this mathematical definition of solubility parameters, that it is possible, for example, to achieve the necessary weighted arithmetic average solubility parameter, ie, less than or equal to 10.5, for an oil-soluble conditioning agent comprising two or more compounds if one of the compounds has an individual solubility parameter of more than 10.5. Conversely, it is possible to achieve the appropriate weighted average arithmetic solubility parameter, ie, more than 10.5, for a water-soluble conditioning agent comprising two or more compounds if one of the compounds has an individual solubility parameter of less than or equal to equal to 10.5. The solubility parameters are well known to chemists of the formulation skilled in the art and are routinely used as a guide to determine the compatibility and solubility of materials in the formulation process. The solubility parameter of a chemical compound, d, is defined as the square root of the cohesive energy density for that compound. Typically, a solubility parameter for a compound is calculated from the tabulated values of the additive group contributions for the heat of vaporization and molar volume of the components of that compound, using the following equation: where S¡ E | = the sum of the heat of the additive vaporization group contributions, and Sjm = the sum of the additive group contributions of molar volume. Standard tabulations of vaporization heat and additive group contributions of molar volume for a wide variety of atoms and groups of atoms are compiled in Barton, A.F.M. Handbook of Solubility Parameters, CRC Press, chapter 6, table 3, pp. 64-66 (1985), which is incorporated by reference herein in its entirety. The aforementioned solubility parameter equation is described in Fedors, R. F., "A Method for Estimating Both the Solubility Parameters and Molar Volumes of Liquids. "Polymer Engineering and Science, vol 14, No. 2, pp. 147-154 (February 1974), which is incorporated by reference herein in its entirety. . The solubility parameters obey the laws of mixtures so that the solubility parameters for a mixture of materials is given by means of the weighted arithmetic average (ie the weighted average) of the solubility parameters for each component of that mixture. See, Handbook of Chemistrv and Phvsics, 57a. edition, CRC Press, p. C-726 (1976-1977), which is incorporated by reference herein in its entirety. The formulation chemicals typically report and use the solubility parameters in units of (cal / cm3) 1/2. The tabulated values of the additive group contributions for heat of vaporization in the Handbook of Solubility Parameters are reported in units of Kj / mo. However, these tabulated values of vaporization values are easily converted to cal / mol using the following known ratio: 1 J / mol = 0.239006 cal / mol and 1000 J = 1 KJ. See Gordon. A. J. et al., The Chemist's Companion, John Wiley% Sons, pp. 456-463, (1973) which is incorporated by reference herein in its entirety. The solubility parameters have also been tabulated for a wide variety of chemical materials. Tabulations of solubility parameters are found in Handbook of Solubility Parameters, mentioned above. Also, see "Solubiluty Effects In Product. Package, Penetration, And Preservation." CD. Vaughan. Cosmetics and Toiletries. Vol. 103, October 1988, pp. 47-69, which is incorporated by reference herein in its entirety.
The external phase of the conditioning emulsion The external phase of the conditioning emulsion comprises an oil-soluble agent. In the external phase, any oil soluble agent or a combination of oil soluble agents having a weighted average arithmetic solubility parameter of less than or equal to 10.5 can be used. Preferably, the oil-soluble agent is an oil-soluble conditioning agent used to condition the skin or hair. Non-limiting examples of useful conditioning agents such as oil-soluble conditioning agents include those selected from a group consisting of mineral oil, petrolatum, branched chain hydrocarbons of C7-C40, C1-C30 alcohol esters of carboxylic acids of C1-C30, C 1 -C 30 alcohol esters of C 2 -C 30 dicarboxylic acids, monoglycerides of C 1 -C 30 carboxylic acids, diglycerides of C 1 -C 30 carboxylic acids, triglycerides of C 1 -C 30 carboxylic acids, ethylene glycol monoesters of acids C 1 -C 30 carboxylic acids, ethylene glycol diesters of C 1 -C 30 carboxylic acids, propylene glycol monoesters of C 1 -C 30 carboxylic acids, propylene glycol diesters of C 1 -C 30 carboxylic acids, monoesters of C 1 -C 30 carboxylic acid and sugar polyesters, polydialkylsiloxanes , polydiarylsiloxanes, polyalcarbylsiloxanes, cyclomethicones having from 3 to 9 silicon atoms, vegetable oils, hydrogenated vegetable oils, alkyl esters of C4-C20 propylene glycol, dialkyl esters of C8-C30 and mixtures thereof.
Mineral oil, also known as petrolatum liquid, is a mixture of liquid hydrocarbons obtained from petroleum. See The Merck Index. Tenth Edition. Entry70-48, p. 1033 (1983) and International Cosmetic Ingredient Dictionary, Fifth Edition vol. 1. P. 415-417 (1993), which are incorporated by reference herein in their entirety. Petrolatum, which is also known as petrolatum, is a colloidal system of non-straight chain solid hydrocarbons and liquid high-boiling hydrocarbons, in which most of the liquid hydrocarbons are kept within the micelles. See The Merck Index. Tenth Edition, Entry 7047, p. 1033 (1983); Schindier, Drug. Cosmet. Ind. 89, 36-37, 76. 78-80 (1961); and International Cosmetic Ingredient Dictionary, Fifth Edition vol. 1. P. 537 (1993), which are incorporated by reference herein in their entirety. Branched or straight chain hydrocarbons having about 7 to about 40 carbon atoms are useful herein. Non-limiting examples of these hydrocarbon materials include dodecane, isododecane, squalene, cholesterol, hydrogenated polyisobutylene, docosane (i.e. a C22 hydrocarbon), hexadecane, isohexadecane (a commercially available hydrocarbon sold as Permethyl® 101 A by Presperse, South Plainfield, NJ). Also useful are C7-C40 isoparaffins, which are branched C7-C40 hydrocarbons. Also useful are C 1 -C 30 alcohol esters of C 1 -C 30 carboxylic acids and C 2 -C 30 dicarboxylic acids, including straight and branched chain materials as well as aromatic derivatives. Also useful are esters such as monoglycerides of carboxylic acids C1-C30, diglycerides of carboxylic acids of C1-C30, triglycerides of carboxylic acids of C1-C30, propylene glycol monoesters of carboxylic acids of C1-C30, ethylene glycol carboxylic acid diesters of C1 -C30, propylene glycol monoesters of C1-C30 carboxylic acids, and propylene glycol diesters of C1-C30 carboxylic acids. Straight chain, branched chain and arylcarboxylic acids are included herein. The propoxylated and ethoxylated derivatives of these materials are also useful. Nonlimiting examples include diisopropilsebacato, diisopropyl adipate, isopropyl myristate, sopropilpalmitato, miristilpropionato, ethyleneglycol distearate, 2-etiIhexilpalmitato, isodecilneopentanoato, di-2-etilhexilmaleato, cetyl palmitate, miristilmiristato, estearilesterato, ceti I stearate, behenilbehenrato, dioctyl maleate, dioctyl sebacate, diisopropyl adipate, cetiloctanoato, diisopropyldilinoleate, caprylic / capric triglyceride, caprylic / capric triglyceride of PEG-6, carpril / capric triglyceride of PEG-8, and mixtures thereof. Also useful are various C1-C30 monster and polyesters of sugars and related materials. These esters are derived from a portion of sugar and polyol and one or more portions of carboxylic acid. Depending on the acid and sugar that constitute them, these esters can be found in solid liquid form at room trature. Examples of liquid esters include: glucose tetraoleate, glucose tetraesters of soybean oil fatty acids (unsaturated), mixed soybean oil fatty acid tetraesters, galactose tetraesters of oleic acid, acid arabinose tetraesters linoleic, xylose tetralinoleate, galactose pentaoleate, sorbitol tetraoleate, sorbitol hexaesters of unsaturated soybean oil fatty acids, xylitol pentaoleate, sucrose tetraoleate, sucrose pentaolate, sucrose hexaoleate, sucrose heptoleate, sucrose octaoleate , and mixtures thereof. Examples of solid esters include: sorbitol hexaester in which the proportions of carboxylic acid ester are palmitoleate and arachididate in a molar ratio of 1: 2; the octaester of raffinose in which the proportions of carboxylic acid ester are linoleate and behenate in a molar ratio of 1: 3; the maltose heptaester wherein the esterifying carboxylic acid proportions are sunflower seed oil fatty acids and Iignocerate in a molar ratio of 3: 4; the octaester of sucrose wherein the esterifying carboxylic acid proportions are oleate and behenate in a molar ratio of 2: 6; and the octaester of sucrose wherein the esterifying carboxylic acid proportions are laurate, linoleate and behenate in a molar ratio of 1: 3: 4. A preferred solid material is the sucrose polyester in which the degree of esterification is 7-8, and in which the fatty acid proportions are mono- and / or di-unsaturated C18 and behenic, in a molar ratio of unsaturated: behenic from 1: 7 to 3: 5. A particularly preferred solid sugar polyester is the octaester of sucrose in which about 7 proportions of fatty acid are found (preferably R is methyl or ethyl, most preferably methyl) and x is an integer up to about 500, which was chosen to achieve the desired molecular weight. Commercially available polyalkylsiloxanes include polydimethylsiloxanes, which are also known as dimethicones, non-limiting examples of which include the Vicasil® series sold by the General Electric Company and the Dow Corning® 200 series sold by Dow Corning Corporation. Specific examples of polydimethylsiloxanes useful herein include Dow Coming®225 fluid having a viscosity of 10 centistokes and a boiling point greater than 200 ° C, and Dow Corning®200 fluids having viscosities of 50.150, and 2500 centistokes, respectively, and boiling points greater than 200 ° C. Also useful are materials such as trimethylsiloxysilicate, which is a polymeric material corresponding to the general chemical formula [(CH2) 3SiO? / 2]? [Si? 2] y, where x is an integer from about 1 to about 500 and "y" is an integer from about 1 to about 500. A commercially available trimethylsiloxysilicate is sold as a mixture with dimethicone as Dow Corning® 593 fluid. Dimethiconols, which are hydroxy-terminated dimethylsilicones, are also useful herein. These materials can be represented by the general chemical formulas R3SiO [R2S0O]? SiR2OH and HOR2SiO [R2S0O]? SiR2OH where R is an alkyl group (preferably R is methyl or ethyl, most preferably methyl) and x is an integer up to about 500, chosen to achieve the desired molecular weight. Commercially available dimethylconols are typically sold as mixtures with dimethicone or cyclomethicone (eg Dow Corning® 1401, 1402, and 1403 fluids). Also useful herein are polyalkylaryl siloxanes, with polymethylphenylsiloxanes having viscosities of from about 15 to about 65 centistokes at 25 ° C being preferred. These materials are available, for example, as SF 1075 methylphenyl fluid (sold by General Electric Company) and cosmetic grade phenyltrimethicone fluid 556 (sold by Dow Corning Corporation). Vegetable oils and hydrogenated vegetable oils are also useful herein. Examples of vegetable oils and hydrogenated vegetable oils include safflower oil, castor oil, coconut oil, cottonseed oil, shad oil, palm kernel oil, peanut oil, soybean oil, rapeseed oil , flaxseed oil, bran oil, pine oil, sesame oil, sunflower seed oil, hydrogenated safflower oil, hydrogenated castor oil, hydrogenated coconut oil, hydrogenated cottonseed oil, shad oil hydrogenated, hydrogenated palm kernel oil, hydrogenated palm oil, hydrogenated peanut oil, hydrogenated soybean oil, hydrogenated rapeseed oil, hydrogenated flaxseed oil, hydrogenated bran oil, hydrogenated sesame oil, hydrogenated sunflower seed oil and mixtures thereof. Also useful are the C4-C20 alkyl esters of polypropylene glycols, C1-C20 carboxylic acid esters of polypropylene glycols, and C8-C30 dialkyl esters. Non-limiting examples of these materials include butyl ether of PPG-14, stearyl ether of PPG-15, dioctyl ether, dodecyl-octyl ether, and mixtures thereof.
Internal phase of the conditioning emulsion The internal phase of the conditioning emulsion comprises a water-soluble conditioning agent. In the internal phase, any water-soluble conditioning agent or a combination of water-soluble conditioning agents having a weighted average arithmetic solubility parameter of more than 10.5 can be used. In addition, any water-soluble ingredients listed in "Additional Ingredients" and "Active Ingredients" can be incorporated into the internal phase of the conditioning emulsion.as long as the water-soluble ingredient is compatible with the water-soluble conditioning agent and does not promote the instability of the conditioning emulsion. Non-limiting examples of conditioning agents useful as water-soluble conditioning agents include those selected from the group consisting of polyhydric alcohols, polypropylene glycols, polyethylene glycols, ureas, pyrrolidonecarboxylic acids, ethoxylated and / or propoxylated C3-C6 diols and triols, acids ethoxylated and / or propoxylated C3-C6 carboxylic acids, diols and triols, C2-C6 alpha-hydroxy carboxylic acids, ethoxylated and / or propoxylated sugars, polyacrylic acid copolymers, sugars having up to about 12 carbon atoms, alcohols of sugar having about 12 carbon atoms, and mixtures thereof. Specific examples of useful water soluble conditioning agents include materials such as urea; guanidine; glycolic acid and glycolate salts (for example ammonium and quaternary alkylammonium); lactic acid and lactate salts (for example ammonium or quaternary alkylammonium); PCA sodium, sucrose, fructose, glucose, erutrosa, erythritol, mannitol, glycerol, hexanetriol, propylene glycol, butylene glycol, hexylene glycol, and the like; 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- 3. 4; alkoxylated glucose; hyaluronic acid; panthenol; niacinamide; and mixtures thereof. Also useful are materials such as aloe vera in any of its forms (for example aloe vera gel), chitin, honey extract, sodium polyacrylates with starch grafting such as Sanwet (RTM) IM-1000, IM-1500, and IM-2500 (available from Celanese r ~ Superabsorbent Materials, Portsmouth, VA); lactamidamonoethanolamine, acetamidamonoethanolamine; and mixtures thereof. Propoxylated glycerols are also useful as described in the propoxylated glycerols described in the US patent. No. 4,976,953, to Orr et al., Published December 11, 1990, which is incorporated by reference herein in its entirety. The internal phase may also optionally contain water. Only enough water is required to solubilize the water-soluble conditioning agent. In general, the amount of water varies depending on the material that needs to be dissolved, for example, water solubility and rheology. In this way, water-soluble agents, which are either solid or highly viscous at processing temperatures, require more water than a material that is less viscous or liquid at processing temperatures.
Similarly, water-soluble conditioning agents having high water solubility would require less water than conditioning agents having low water solubility. The internal phase may further comprise other soluble or water dispersible materials that do not adversely affect the stability of the conditioning emulsion. One of these materials is a water soluble electrolyte. The dissolved electrolyte minimizes the tendency of the materials present in the lipid phase to also dissolve in the water phase. Any electrolyte capable of imparting ionic strength to the internal phase can be used. Suitable electrolytes include the water-soluble mono-, di-, or trivalent inorganic salts, such as water-soluble halides, for example, chlorides, nitrates, and sulfates of alkali metals and ferrous alkali metals. Examples of such electrolytes include sodium chloride, calcium chloride, sodium sulfate, magnesium sulfate and sodium bicarbonate. The electrolyte will typically be included in a concentration on the scale of about 1 about 20% of the internal phase. Other soluble or water dispersible materials that may be present in the internal phase include thickeners and viscosity modifiers. Suitable thickeners and viscosity modifiers include water soluble polyacrylic resins and hydrophobically modified polyacrylic resins such as Carbopoi and Pemulen, starches such as corn starch, potato starch, tapioca, gums such as guar gum, gum arabic, cellulose ethers such as hydroxypropylcellulose, hydroxyethylcellulose, carboxymethylcellulose and the like. These thickeners and viscosity modifiers will typically be included in a concentration on the scale from about 0.05 to about 0.5% of the internal phase. Other soluble or water dispersible materials that may be present in the internal water phase include polycationic polymers to provide spherical stabilization in the water-lipid interface and nonionic polymers that also stabilize the water emulsion in lipids. Suitable polycationic polymers include Reten 201, Kymene 557H® and Acco 71 12. Suitable nonionic polymers include polyethylene glycols (PEG) such as Carbowax. These polycationic and non-ionic polymers will typically be included in a concentration on the scale from about 0.1 to about 1.0% of the internal phase.
The emulsifier Preferred embodiments of the products of the present invention comprise an emulsifier capable of forming an emulsion of the internal and external phases. In the emulsions of the present invention, the emulsifier is included in an effective amount. What constitutes an "effective amount" will depend on a number of factors including the respective amounts of the oil-soluble agents, the type of emulsifier used, the level of impurities present in the emulsifier and the like. Typically, the emulsifier comprises about 0.1% to about 20%, preferably about 1% to about 10% and most preferably about 3% to about 6% by weight of the conditioning emulsion. The emulsifiers useful in the present invention are typically soluble or oil miscible with the materials of the oil-soluble outer phase, especially at the temperature at which the lipid material melts. It must also have a relatively low HLB value. Emulsifiers suitable for use in the present invention have HLB values typically in the range of about 1 to about 7 and may include mixtures of different emulsifiers. Preferably, these emulsifiers will have HLB values of from about 1.5 to about 6, and most preferably from about 2 to about 5. A wide variety of emulsifiers are useful herein and include, but are not limited to, those selected from the group that it consists of sorbitan esters, glyceryl esters, polyglyceryl esters, methylglucose esters, sucrose esters, ethoxylated fatty alcohols, ethoxylated hydrogenated castor oil, sorbitan ester ethoxylates, polymeric emulsifiers and silicone emulsifiers. Sorbitan esters are useful in the present invention. Preferred are sorbitan esters of saturated and unsaturated C 16 -C 22 branched chain fatty acids. Due to the manner in which they are typically manufactured, these sorbitan esters usually comprise mixtures of mono-, di, tri-, etc. esteres. Representative examples of suitable sorbitan esters include sorbitan monooleate (e.g. SPAN® 80), sorbitan sesquioleate (e.g., Arlacel® 83), sorbitan monoisostearate (e.g., CRILL® 6 made by Croda), sorbitan stearates ( for example, SPAN® 60), sorbitan trioleate (for example, SPAN® 85), sorbitan sorbate (for example SPAN® 65), sorbitan dipalmitatos (for example, SPAN® 40) and sorbitan isostearate. Sorbitan monoisosterate and sorbitan sesquioleate are the emulsifiers that are preferred to be used particularly in the present invention. Other emulsifiers suitable for use in the present invention include, but are not limited to, glyceryl monoesters, preferably glyceryl monoesters of saturated, branched chain unsaturated C 16 -C 22 fatty acids such as glyceryl oleate, glyceryl monostearate, glyceryl monopalmitate, glyceryl monobehenate and mixtures thereof; polyglyceryl esters of C16-C22 saturated, unsaturated and branched chain fatty acids, such as polyglyceryl-4 isostearate, polyglyceryl-3 oleate, diglycerol monooleate, tetraglycerol monooleate and mixtures thereof; methylglucose esters, preferably methylglucose esters of saturated, unsaturated and branched chain C 16 -C 22 fatty acids such as methyl glucose dioleate, methyl glucose sesquiisostearate and mixtures thereof; sucrose fatty acid esters, preferably C12-C22 saturated, unsaturated and branched chain fatty acid esters such as sucrose stearate, sucrose trilaurate, sucrose distearate (eg, Crodesta® F10) and mixtures thereof; ethoxylated C12-C22 fatty alcohols such as oleth-2, oleth-3, steareth-2 and mixtures thereof; ethoxylated hydrogenated castor oil such as hydrogenated castor oil PEG-7, ethoxylated sorbitan ester such as PEG-40 petroleato sorbitan, 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 contain a coemulsifier to provide additional stability to the water-lipid emulsion. Suitable co-emulsifiers include, but are not limited to, phosphatidyl-hills and compositions containing phosphatidylcholine such as lecithins; long chain C16-C22 fatty acid salts such as sodium stearate; long chain dialiphatic quaternary ammonium salts of C16-C22 or short chain dialiphatic C1-C4 such as ditallowdimethylammonium chloride and ditallowdimethylammonium methylsulfate; dialkoyl (alkenoyl) -2-hydroxyethyl C16-C22 long chain quaternary ammonium salts dialiphatic short chain C1-C4 such as ditallowyl-2-hydroxyethyldimethylammonium chloride; the quaternary ammonium salts of dialiphatic imidazolinium C16-C22 long chain such as methylsulfate me'il-1-tallowimidazolinium seboamidetil-2-chloride and methyl-1-2- -oleilamidoetil oleilimidazolinio; quaternary ammonium salts of dialiphatic benzyl C1-C4 monoaliphatic or short chain C16-C22 long chain such as dimethylstearylbenzylammonium chloride, and synthetic phospholipids such as PG-dimonium estereamidopropilo (Phospholipid PTS from Mona Industries) chloride.
Additional ingredients The products of the present invention may comprise a wide range of optional ingredients. Some of those ingredients are listed in more detail in the present. Particularly useful are several useful active ingredients to provide various benefits to the skin or hair during the cleaning and conditioning process. If the ingredient is compatible with the internal or external phases of the conditioning emulsion, the ingredient can be incorporated in the appropriate phases. This is especially true when the water soluble active ingredients are compatible with the internal phase and do not promote the instability of the conditioning emulsion. In these compositions, the product is useful for providing the active ingredient to the skin or hair. In addition, any of the conditioning agents described above in the sections describing the internal (water soluble) and external (oil soluble) phases of the conditioning emulsion may be added to the substrate separately from the conditioning emulsion.
Active ingredients The compositions of the present invention may comprise a safe and effective amount of one or more active ingredients or pharmaceutically acceptable salts thereof. The term "safe and effective amount" as used herein means the amount of an active ingredient sufficiently high to modify the condition to be treated or to provide the desired benefit to the skin, but low enough to avoid serious side effects. , to a ratio of benefit to risk of reasonable sound medical judgment. What is a safe and effective amount of the active ingredient can vary with the specific asset, the ability of the active to penetrate through the skin, the age, the health condition, the condition of the user's skin, and other similar factors . The active ingredients useful herein may be categorized by their therapeutic benefit or their postulated mode of action. However, it is to be understood that the active ingredients useful herein may in some cases provide more than one therapeutic benefit or operate by means of more than one mode of action. Therefore, the classifications are made herein for convenience purposes and are not intended to limit the active ingredient to a particular application or enlisted applications. Also, pharmaceutically acceptable salts of these active ingredients are useful herein. The following active ingredients are useful in the compositions of the present invention.
Anti-acne active agents Examples of useful 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 its derivatives (by cis and trans example); dextrorotatory and levorotatory amino acids containing sulfur and its derivatives and salts, particularly its N-acetyl derivatives, a preferred example which is N-acetyl-L-cysteine; lipoic acid; antibiotics and antimicrobials such as benzoyl peroxide, octopirox, tetracycline, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, 3,4,4'-trichlorobanilide, azelaic acid and its derivatives, phenoxyethanol, phenoxypropanol, phenoxy isopropanol, ethyl, clindamycin and meclocycline; sebostats such as flavonoids; and bile salts such as simnolsulfate and its derivatives, deoxycholate and cholate.
Anti-wrinkle and anti-skin atrophy active agents Examples of anti-wrinkle and anti-skin atrophy active agents include retinoic acid and its derivatives (for example cis and trans); retinol; retinyl esters, salicylic acid and derivatives thereof; dextrorotatory and levorotatory containing amino acids containing sulfur and its derivatives and salts, particularly N-acetyl derivatives, a preferred example which is N-acetyl-L-cysteine; thiols, for example ethanethiol; hydroxy acid, phytic acid, lipoic acid; lysophosphatidic acid, and skin exfoliating agents (for example phenol and the like), ascorbic acid and its derivatives.
Non-steroidal anti-inflammatory agents (NSADIS) 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 described in their entirety in the U.S. patent. 4,985,459 to Sunshine et al., Published January 15, 1991, incorporated by reference herein in its entirety. Examples of useful NSAIDS include acetylsalicylic acid, buprofen, naproxen, benoxaprofen, flurbiprofen, fenoprofen, fenbufen, ketoprofen, indoprofen, pirprofen, carprofen, oxaprozin, pranoprofen, miroprofen, thioxaprofen, suprofen, alminoprofen, thiaprofenic acid, fluoprofen and bucloxic acid. Steroidal anti-inflammatory drugs including hydrocortisone and the like are also useful.
Topical Anesthetics Examples of topical anesthetic drugs include benzocaine, lidocaine, bupivacaine, chlorprocaine, dibucaine, ethidocaine, mepivacaine, tetracaine, dicllonine, hexylcaine, procaine, cocaine, ketamine, pramoxin, phenol, and pharmaceutically acceptable salts thereof.
Artificial Tanning Agents and Accelerators Examples of artificial bronzing agents and accelerators include dihydroxyacetaone, tyrosine, tyrosine esters such as ethyl tyrosinate, and phospho-DOPA.
Antimicrobial and antifungal active 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, S ^ ^ - trichlorobanilide, phenoxyethanol, phenoxypropanol, phenoxyisopropanol, doxycycline, capreomycin, chlorhexidine, chlortetracycline, oxytetracycline, clindamycin, ethambutol, hexamidine isethionate, metronidazole, pentamidine, gentamicin, kanamycin, lineomycin, methacycline, methenamine, minocycline, neomycin, netilmicin, paromycin , streptomycin, tobramycin, miconazole, tetracycline hydrochloride, erythromycin, zinc erythromycin, erythromycin estolate, erythromycin stearate, amikacin sulfate, doxycycline hydrochloride, capreomycin sulfate, chlorhexidine gluconate, chlorhexidine hydrochloride, chlortetracycline hydrochloride, hydrochloride of oxytetracycline, clindamic hydrochloride ina, ethambutol hydrochloride, metronidazole hydrochloride, pentamidine hydrochloride, gentamicin sulfate, kanamycin sulfate, lineomycin hydrochloride, methacycline hydrochloride, methenamine hippurate, methanimine mandelate, minocycline hydrochloride, neomycin sulfate, netilmicin sulfate, paromomycin sulfate, streptomycin sulfate, trobamycin sulfate, miconazole hydrochloride, amanfadine hydrochloride, amanfadine sulfate, octopirox, parachloromethaxyleneol, nystatin, tolnaftate, zinc pyrythion and clortrimazole.
Preferred examples of active agents useful herein include those selected from a group consisting of salicylic acid, benzoyl peroxide, 3-hydroxybenzoic acid, 4-hydroxybenzoic acid, acetylsalicylic acid, 2-hydroxybutanoic acid, 2-hydroxypentanoic acid, 2-hydroxyhexanoic, cis-retinoic acid, trans-retinoic acid, retinol, phytic acid, ascorbic acid and derivatives thereof, phytic acid, N-acetyl-L-cysteine, lipoic acid, azelaic acid, arachidonic acid, benzoyl peroxide , tetracycline, ibuprofen, naproxen, hydrocortisone, acetaminophen, resorcinol, phenoxyethanol, phenoxypropanol, phenoxyisorpropanol, 2,4,4'-trichloro-2'-hydroxydiphenyl ether, 3,4,4'-trichlorcarbanide, octopirox, hydrochloride of lidocaine, clotrimazole, miconazole, neocicin sulfate, and mixtures thereof.
Active Sunscreen Agents Active sunscreen agents are also useful herein. A wide variety of sunscreen agents are described in the U.S. patent. No. 5,087,445, for Haffey et al, published on February 11, 1992; the patent of E.U.A. No. 5,073,372 to Turner et al, published December 17, 1991; the patent of E.U.A. No. 5,073,371 to Turner et al, published December 17, 1991; and Segari, et al, in chapter VIII, pages 189 and subsequent, of Cosmetics Science and Technology, which are incorporated herein by reference in their entirety. Nonlimiting examples of sunscreens which are useful in the compositions of the present invention are those selected from the group consisting of p-methoxycinnamic acid-2-ethylhexyl N, N-dimethyl-p-aminobenzoate 2-etilehexilo acid, p aminobenzoic, 2-phenylbenzimidazole-5-sulfonic acid, octocrylene, oxybenzone, homomenthyl salicylate, octyl salicylate, 4,4'-methoxy-t-butiIdibenzoilmetano, 4- sopropildibenzoilmetano, 3-benzylidene camphor, 3- (4-methylbenzylidene) aIcanfor dioxide of titanium, zinc oxide, silica, iron oxide, and mixtures thereof. Other useful sunscreens are also those described in the U.S. patent. No. 4,937,370 for Sabatelli, published on June 26, 1990; and the patent of E.U.A. No. 4,999,186 for Sabatelli el al, published on March 12, 1991; these two references are incorporated herein in their entirety. Especially preferred examples of these sunscreens include those which were selected from the group consisting of 4-N, N- (2-ethylhexyl) methylaminobenzoic acid ester of 2,4-dihydroxybenzophenone, 4-N, N- (2 -ethylhexyl) methylaminobenzoic acid with 4-hydroxybenzoylmethane, 4-N, N- (2-ethylhexyl) methylaminobenzoic acid ester of 2-hydroxy-4- (2-hydroxyethoxy) benzophenone, 4-N, N- ( 2-Ethylhexyl) methylaminobenzoic acid of 4- (2-hydroxyethoxy) dibenzoylmethane, and mixtures thereof. The exact amounts of sunscreens that can be used can vary depending on the chosen sunscreen and the desired sun protection factor (SPF) that you want to achieve. The SPF is a measurement commonly used as photoprotection of a sunscreen against erythema. See Federal Register, Vol. 43, No. 166, pp. 38206-38269, August 25, 1978, which is incorporated herein by reference in its entirety. Non-limiting examples of the preferred active agents useful herein include those selected from the group consisting of salicylic acid, benzoyl peroxide, cis-retinoic acid, trans-retinoic acid, retinol, retinyl palmitate, ascorbic acid, phytic acid , N-acetyl L-cysteine, acelaic acid, lipoic acid, resorcinol, ibuprofen, naproxen, hydrocortisone, phenoxyethanol, phenoxypropanol, phenoxyisopropanol, 2,4,4'-trichloro-2'-h id phenolic acid, S ^ ^ '- trichlorocarbanilide, 2-hexyhexyl p-methoxycinnamate, oxybenzone, 2-phenylbenzimidozole-5-sulfonic acid, dihydroxyacetone, and mixtures thereof.
Cationic Surfactants The products of the present invention may optionally comprise one or more cationic surfactants, since these materials are selected so as not to interfere with the total foaming characteristics of the required foaming surfactants. Non-limiting examples of cationic surfactants useful herein are described in McCutcheon's. Detergents and Emulsifiers, North American Edition (1986)., Published by allured Publishing Corporation; and McCutcheon's. Functional Materials, North American Edition (1992); both are incorporated by reference herein in their entirety.
Non-limiting examples of cationic surfactants useful herein include cationic alkylammonium salts such as those having the formula: R-, R2R3R4N + X- wherein Ri is selected from an alkyl group having from about 2 to about 18 carbon atoms , or aromatic, aryl or alkaryl groups having from about 12 to about 18 carbon atoms: R2, R3 and R4 are independently selected from hydrogen, an alkyl group having from about 1 to about 18 carbon atoms, or groups aromatics, aryl or alkaryl having from about 12 to about 18 carbon atoms; and X is an anion selected from the chloride, bromide, iodide, acetate, phosphate, nitrate, sulfate, methyl sulfate, ethyl sulfate, tosylate, lactate, citrate, glycolate, and mixtures thereof. Additionally, the alkyl groups may contain ether linkages, or substituents of the hydroxy or amino group (for example, the alkyl groups may contain proportions of polyethylene glycol and polypropylene glycol). Most preferably R-i is an alkyl group having from about 12 to about 18 carbon atoms; R2 is selected from H or an alkyl group having from about 1 to about 18 carbon atoms; R3 and R are independently selected from H or an alkyl group having about 1 about 3 carbon atoms; and X is as described in the previous paragraphs.
Most preferably, Ri is an alkyl group having from about 12 to about 18 carbon atoms; R2, R3 and R4 are selected from H or an alkyl group having from about 1 to about 3 carbon atoms; and X is as described above. Also, other useful cationic surfactants include aminoamides, wherein the above structure R1 is alternatively R5CO- (CH2) n-, where R5 is an alkyl group having about 12 about 22 carbon atoms, and 'n is an integer. from about 2 to about 6, most preferably from about 2 to about 4, and most preferably from about 2 to about 3. Non-limiting examples of these cationic emulsifiers include stearamidopropyl PG-dimonium chloride-phosphate, stearamidopropylethylimoniate ethosulfate, stearamidopropyl methyl (myristyl acetate) ammonium, stearamidopropyl dimethyltearylammonium tosylate, stearamidopropyl dimethyl ammonium chloride, stearamidopropyl dimethyl ammonium lactate, and mixtures thereof. Non-limiting examples of cationic surfactants of quaternary ammonium salts include those selected from a group consisting of cetyl ammonium chloride, cetyl ammonium bromide, laurylammonium chloride, laurylammonium bromide, stearylammonium chloride, stearylammonium bromide, cetyl dimethyl ammonium chloride , cetyl dimethyl ammonium bromide, lauryldimethyl ammonium chloride, lauryldimethyl ammonium bromide, stearyldimethylammonium chloride, stearyldimethylammonium bromide, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, stearyltrimethylammonium chloride, stearyltrimethylammonium bromide, lauryl dimethyl ammonium chloride, chloride of stearyldimethyl-ethyl-diethyldimethylammonium chloride, dicylammonium chloride, dicythylammonium bromide, dilaurammonium chloride, dilaurammonium bromide, distethylammonium chloride, distearylammonium bromide, dicetylmethylammonium chloride, dicetylmethylammonium bromide, dilaurylmethylammonium chloride, dilaurylmethylammonium bromide, distearylmethylammonium chloride, disteryl dimethyl ammonium chloride, distearyl methyl ammonium bromide, and mixtures thereof. Additional quaternary ammonium salts include those wherein the C12 to C22 alkyl carbon chain is derived from a tallow fatty acid or a coconut fatty acid. The term "tallow" refers to an alkyl group derived from tallow fatty acids (generally hydrogenated tallow fatty acids), which generally have mixtures of alkyl chains on the scale of C16 to C18. The term "coconut" refers to an alkyl group derived from a coconut fatty acid, which generally has the mixture of alkyl chains on the C12 to C14 scale. Examples of quaternary ammonium salts derived from these tallow and coconut sources include ditallowdimethylammonium chloride, ditallowdimethylammonium methylsulfate, di (hydrogenated tallow) dimethylammonium chloride, di (hydrogenated tallow) dimethylammonium acetate, ditallowdipropylammonium phosphate, ditallowdimethylammonium nitrate, chloride of di (cocoalkyl) dimethylammonium, di (cocoalkyl) dimethylammonium bromide, tallowammonium chloride, cocoammonium chloride, stearamidopropyl PG-dimonium chloride-phosphate, stearamidopropylethylimoniate ethosulfate, stearamidopropylmethyl (myristiacetate) ammonium chloride, stearamidopropyldimethyltenetethylammonium tosylate, stearamidopropyldimethylammonium, stearamidopropyldimethylammonium lactate, and mixtures thereof. Preferred cationic surfactants useful herein include those selected from a group consisting of dilauryl dimethyl ammonium chloride, distearyldimethylammonium chloride, dimyristyldimethylammonium chloride, dipalmitydimethylammonium chloride, distearyldimethylammonium chloride, and mixtures thereof.
Other Optional Ingredients The compositions of the present invention may comprise a wide variety of optional components. These additional components must be pharmaceutically acceptable. The CTFA Cosmetic Ingredient Handbook, Second Edition, 1992, which is incorporated by reference herein in its entirety, discloses a wide variety of non-limiting cosmetics and pharmaceutical ingredients commonly used in the skin care industry, which are suitable for used in the compositions of the present invention. Non-limiting examples of functional classes of ingredients are described on page 537 of this reference.
Examples of these and other functional classes include: abrasives, absorbents, cake antifouling agents, antioxidants, vitamins, binders, biological additives, pH regulating agents, body-forming agents, chelating agents, chemical additives, colorants, cosmetic astringents, cosmetic biocides , denaturants, drug astringents, external analgesics, film formers, fragrance components, humectants, opacifying agents, pH adjusters, preservatives, propellants, reducing agents, skin cleansing agents, and sunscreen agents. Also useful herein are the aesthetic components such as fragrances, pigments, dyes, essential oils, skin sensitizing agents, skin softening agents and skin healing agents.
MANUFACTURING METHODS The disposable, disposable personal care cleaning and conditioning products of the present invention are manufactured by separately or simultaneously adding or impregnating a water-insoluble substrate with a foaming surfactant and a conditioning emulsion, wherein said resulting product is substantially dry. By "separately" it is meant that the surfactants and conditioning agents can be added sequentially, in any order without first being combined. By "simultaneously" it is meant that surfactants and conditioning agents can be added at the same time without first being combined. For example, the foaming surfactants may be added or impregnated first in the water insoluble substrate followed by the conditioning emulsions, or vice versa. Also, the foaming surfactants and conditioning emulsions can be added or impregnated in the water-insoluble substrate at the same time. Also, the foaming surfactants and conditioning agents can be combined before being added or impregnated into water insoluble substrate. The surfactant, conditioning emulsions, and any optional ingredients may be added or impregnated into the water-insoluble substrate by any means known to those skilled in the art: for example, by spraying, printing, splashing, dipping, wetting or coating. The optional ingredients may be the same as those of the internal or external phases of the conditioning emulsion. To prepare the articles according to the present invention, the conditioning emulsion is initially formulated. Typically, this is achieved by mixing or melting the oil-soluble outer phase components and the emulsifier. The particular temperature at which this mixture of oil-soluble agent / emulsifier is heated will depend on the melting point of the components of the oil-soluble outer phase. Typically, this oil soluble agent / emulsifier is heated to a temperature in the range of about 60 ° C to about 90 ° C, preferably about 70 ° C to about 80 ° C, before being mixed, stirred or otherwise combined with the components of the internal phase soluble in water. However, heating is not always required to form the conditioning emulsion. The oil soluble agent / molten emulsifier mixture is then combined with the components of the water phase and then mixed together to provide the emulsion. When water or moisture is used or is present in the manufacturing process, the resulting treated substrate is subsequently dried until it is almost dry. The treated substrate can be dried by any means known to those skilled in the art. Non-limiting examples of known drying media include the use of conduction ovens, radiant heat sources, microwave ovens, drying by > steam, forced air ovens, rollers or heated containers. Drying also includes drying with air without the addition of heat energy, more than that which is present in the environment. A combination of various drying methods can also be used.
METHODS FOR CLEANSING AND CONDITIONING SKIN OR HAIR The present invention also relates to a method for cleaning and conditioning the skin or hair with a personal cleansing product of the present invention. These methods comprise the steps of wetting with water a disposable, substantially dry, single use personal waste product comprising a water insoluble substrate, a foaming surfactant, and a conditioning component, and contacting the skin or hair with said product moistened. In additional embodiments, the present invention is also useful for providing various active ingredients to the skin or hair. The products of the present invention are substantially dry and are intended to be moistened with water before use. The product is moistened by immersion in water or by placing it under a stream of water. The foam is generated from the product by mechanically stirring and / or deforming the product either before or during the contact of the product with the skin or hair. The resulting foam is useful for cleaning and conditioning the skin or hair. During the subsequent cleaning and washing procedure with water, the conditioning agents, and active ingredients, are deposited on the skin or hair. The deposition of conditioning agents, and optionally an active ingredient, is increased by physical contact of the substrate with the skin or hair.
DEPOSITION OF THE CONDITIONING COMPONENT ON THE SKIN OR THE HAIR The compositions of the present invention are useful for depositing the conditioning components of the present invention on the skin or hair. In additional embodiments where the active ingredients are present, the compositions are also useful for depositing the active ingredient on the skin or hair. The compositions of the present invention preferably deposit more than about 2.5 micrograms / cm2, most preferably more than about 5 micrograms / cm2, most preferably more than about 10 micrograms / cm2, and most preferably about 25 micrograms / cm2, Conditioner component to the skin or hair during the use of the product. The present invention also relates to a method for depositing more than about 2.5 micrograms / cm 2, preferably more than about 5 micrograms / cm 2, most preferably more than about 10 micrograms / cm 2 and most preferably more than about 25 micrograms / cm2 of the conditioning agent to the surface of the skin or hair. The amount of the conditioning component deposited on the skin or hair can be measured using a variety of standard analytical techniques known to chemists skilled in the art. Such methods include for example the removal of an area of skin or hair with a suitable solvent followed by analysis by chromatography (ie gas chromatography, liquid chromatography, supercritical fluid chromatography, etc.), IR spectroscopy, UV / spectroscopy. VIS, mass spectography etc. Direct measurements can also be performed on the skin or hair by means of techniques such as IR spectroscopy, UV / VIS spectroscopy, opacity measurements, fluorescent spectroscopy, ESCA spectroscopy, and the like. In a typical method for measuring deposition, a product of the present invention is moistened with water and compressed and agitated to generate a foam. The product is subsequently rubbed * for about 15 seconds at one site, approximately about 25cm2 to about 300mc2, preferably about 50cm2 to about 100cm2, on the skin or head that has been demarcated using an appropriate indelible marker. The site is subsequently washed for approximately 10 seconds and subsequently dried with air for about 10 minutes. Subsequently the site is extracted and the extracts are analyzed, or analyzed directly using any of the techniques as exemplified above.
EXAMPLES The following examples describe and demonstrate embodiments within the scope of the present invention. In the following examples, all ingredients are ready at an active level. The examples are given only for the purpose of illustrating and not as limitations of the present invention since many variations of these are possible without departing from the spirit and scope of the invention.
The ingredients are identified by chemical name or CTFA name and all weights are in percent active agents.
I. Surfactant phase In a suitable container, the following ingredients are mixed at room temperature. Once the polyquaternium is dispersed, the mixture is heated to 65 ° C.
Ingredients Percent by weight Example Example Example Example 1 2 3 4 5 Water QS 100 QS 100 QS 100 QS 100 QS 100 Polyquaternium-10 0.25 0.25 0.25 0.25 0.25 While the above mixture is heated to 65 ° C the following ingredients are added to the mixture.
Disodium EDTA 0.10 0.10 0.10 0.10 Ammonium Laureth Sulfate 4.2 4.2 4.2 4.2 Ammonium Lauryl Sulfate 1.4 1.4 1.4 1.4 Sodium Lauroamphoacetate 2.4 2.4 2.4 2.4 Sodium Lauroyl Sodium Sulfate - 4.0 Disodium Lauroampheracetate and 4.0 Sodium tridecetsulfate Once the above ingredients are thoroughly mixed, the mixture starts to cool to 45 ° C. In a separate mixing vessel the following is added: Water 2.0 2.0 2.0 2.0 2.0 Butylene glycol 2.0 2.0 2.0 2.0 2.0 Glidant Plus 0.2 0.2 0.2 0.2 0.2 Once the Glidant Plus is dissolved, this mixture is added to the first mixing vessel and cooled to room temperature. Once cold, 1.5 g of this solution is applied to a non-woven substrate and then allowed to dry.
Phase 2: Conditioning emulsion In a suitable container the following ingredients are mixed at room temperature and heated to 70 ° C during mixing.
SEFA Cotonato * 4.65 4.00 4.65 34.40 4.65 SEFA Behenate * 0.35 - 0.35 2.60 0.35 Petrolato - 1.00 - - - Sorbitan mono-oleate - - - 3.00 - Polyglyceryl isostearate-4 5.00 5.00 5.00 - 5.00 (y) Cetil dimethicone (y) Hexil Laurato1 1 Available as Abil WE-09 from Glodschmidt * SEFA is an acronym for sucrose esters of fatty acids. Once the mixture reaches 70 ° C the heating is stopped and the following ingredients are added slowly continuing with the mixture: Glycerin 90.00 90.00 70.00 60.00 90.00 Pantenol 20.00 It is cooled to room temperature while mixing. Then 0.17 g of this phase of the substrate which already contains the surfactants of the surfactant phase is added. The resulting cleaning composition is used by moistening it with water and is useful for cleaning the skin or hair and for depositing the conditioning emulsions on the skin or hair. In alternative manufacturing processes, the foaming surfactants, conditioning emulsions and optional ingredients are added separately or simultaneously on, or impregnated into, the water-insoluble substrate by spraying, printing, splashing, dipping or coating. In alternative embodiments, the present substrate is substituted with other substrates such as woven substrates, hydroentangled substrates, natural sponges, synthetic sponges or polymer network meshes.

Claims (10)

NOVELTY OF THE INVENTION CLAIMS
1. - A disposable and single-use disposable cleaning and conditioning product that is rinsed from the skin or hair and that comprises: (A) a water-insoluble substrate, (B) a foaming surfactant and ( C) a conditioning emulsion, characterized in that said product is substantially dry.
2. A product according to claim 1, further characterized in that said foam-forming surfactant comprises from 0.5% to 40% by weight of said insoluble substrate, and wherein said conditioning emulsion comprises from 0.25% to 150% by weight of said insoluble water substrate.
3. A product according to claim 1 or 2, further characterized in that said conditioning emulsion comprises: (A) a discontinuous phase comprising a water-soluble conditioning agent selected from one or more water-soluble agents, in such a way that the weighted average arithmetic solubility parameter of said water-soluble conditioning agent is greater than 10.5, and (B) a continuous phase comprising an oil-soluble agent selected from one or more oil-soluble agents such that the solubility parameter Weighted arithmetic average of said water-soluble conditioning agent is more than 10.5.
4. A product according to any of claims 1 to 3, further comprising 0% to 20%, by weight of said conditioning emulsion, of an emulsifier capable of forming an emulsion of said discontinuous and continuous phases, wherein said emulsifier is selected from one or more emulsifiers in such a way that the weighted average arithmetic HLB value is from 1 to 7.
5. A product according to any of claims 1 to 4, further characterized in that said oil-soluble agent is selects from the group consisting of oil-soluble conditioning agents, oil-soluble non-conditioning agents and mixtures thereof.
6. A product according to any of claims 1 to 5, further characterized in that said oil-soluble conditioning agent is selected from the group consisting of fatty acid esters, polyol polyesters, glycerin monoesters, glycerin diesters, triesters of glycerin, epidermal and sebaceous hydrocarbons, lanolin, mineral oil, silicone oil, silicone gum, vegetable oil, vegetable oil adduct, petrolatum, non-ionic polymers and mixtures thereof; and wherein said water-soluble conditioning agent is selected from the group consisting of glycerin, glycerol, propylene glycol, polypropylene glycols, polyethylene glycols, ethylhexanediol, hexylene glycols, other aliphatic alcohols, panthenol, urea, cationic polymers, polyols, glycolic acid, lactic acid, niacinamide. , Sodium PCA, sorbitol and mixtures thereof.
7. A product according to any of claims 1 to 6, further characterized in that said cleaning product further comprises a safe and effective amount of one or more active ingredients selected from the group consisting of anti-acne active agents, vitamins, anti-wrinkle and anti-dry active agents, non-steroidal anti-inflammatory active agents, topical anesthetics, artificial tanning agents and accelerators, antimicrobial and anti-microbial agents, sunscreen active agents, anti-oxidants and mixtures thereof.
8. A method for manufacturing a product according to any of claims 1 to 6, which comprises the steps of adding separately or simultaneously on, or impregnated in a water-insoluble substrate: (A) a surfactant forming agent foam and (B) a conditioning emulsion comprising: (i) an internal phase comprising a water-soluble conditioning agent and (ii) an external phase comprising an oil-soluble agent, wherein said resulting product is substantially dry. 9.- A method to deposit water-soluble conditioning agents on the surface of the skin or hair that requires humidification, said method comprises the steps of (i) producing foam from the product according to any of claims 1 to 7, (ii) contacting the skin and (iii) rinsing with water. 10. A method for treating the skin or hair that requires cleaning and conditioning, said method comprising the steps of (i) moistening with water and producing foam from the product according to any of claims 1 to 7, ( I) put in contact with the skin, and (iii) rinse with water.
MXPA/A/1999/010791A 1997-05-22 1999-11-22 Cleansing products with improved moisturization MXPA99010791A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/861,748 1997-05-22
US08980096 1997-11-26

Publications (1)

Publication Number Publication Date
MXPA99010791A true MXPA99010791A (en) 2000-09-04

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