MXPA02004784A - Detergent composition. - Google Patents

Abstract

Detergent compositions consisting of a sensory enhancing ingredient and conventional detergent ingredients. The sensory enhancing ingredient can be delivered as an addon to the finished product via spray drying, or in crystal form or alternatively it can be included as an encapsulated particle. If delivered as an encapsulated particle the particle may or may not also contain perfume(s).

Description

DETERGENT COMPOSITION FIELD OF THE INVENTION The present invention relates to detergent compositions comprising ingredients that improve the sensation. The ingredients that improve the sensation provide improved sensory perceptions including improved softness, and a feeling of freshness and freshness on the skin especially when used in granular detergents for hand washing operations.

BACKGROUND OF THE INVENTION Detergent compositions in the form of granules and synthetic detergent liquids are used in many areas throughout the world for laundry purposes. In areas where mechanical washing machines are not prevalent, dirty laundry generally comprises some type of hand washing operation. Some geographical areas use detergent compositions in granular, paste, gel, or stick form. In operations involving the washing of clothes by hand, the hands and arms of the user are typically exposed to the aqueous washing solutions in which the detergent composition is contained. Repeated exposure to washing solutions during hand washing operations can lead to irritation of the skin which can eventually lead to skin lesions, itching, burning, cracking or other skin damage. Many attempts have been made by laundry detergent formulators for hand washing to alleviate the deleterious effects of hand washing operations on the arms and hands of the user of such detergent products. Therefore it is desirable to have a laundry detergent composition suitable for hand washing operations that shows softness to the skin of users while maintaining cleaning performance. In the area of hand washing detergents it is also desirable to formulate a detergent composition which improves the overall consumer experience during the hand washing process by providing pleasant sensory signals. These sensory signals provide an improved skin sensation and include sensations such as freshness or freshness on the skin. However, many ingredients that provide such a sensory signal have the disadvantage of imparting an unpleasant odor to the wash solution. Accordingly, it would be desirable to have a laundry detergent composition suitable for hand washing operations that exhibits a superior cleaning performance while imparting a smooth, feeling to the hands and arms of users. Additionally, it is also desirable to provide formulations that improve the consumer experience through the hand washing process by providing ingredients that improve the feel in the wash solution without imparting an unpleasant odor or adversely impact cleaning performance. There has been a continuous search for methods and compositions that will effectively and effectively provide smoothness and yet maintain superior cleanliness. Current compositions focus solely on the clinical smoothness of the compositions to the skin of the hands and arms. However, the various solutions that currently exist in the art fail to address the need to point out the resulting smoothness to consumers in a way that is easily perceived. Additionally, current formulations do not face the importance of creating an improved skin feel during the hand wash procedure. The present invention relates to compositions that signal softness to the consumer during washing and thus significantly improve consumer acceptance for such compositions. The present invention also relates to detergent compositions that improve the total consumer experience through the hand washing process. By means of the present invention it has now been discovered that by adding sensation-improving ingredients to detergent compositions containing conventional surfactant systems, it is perceived that the resulting compositions are milder than the compositions without the ingredient that improves the feeling. These compositions also impart a freshness and freshness to the washing solution and to the consumer's skin during washing. Additionally, the ingredients that improve the feel do not have a detrimental impact on the cleaning performance of the compositions. The present invention solves the need that has existed for a long time for a simple, effective hand-washing detergent composition that provides superior performance and provides a smooth and fresh feel to the skin during and after washing.

BRIEF DESCRIPTION OF THE INVENTION The present invention relates to detergent compositions comprising from 0.01% to 1.0% by weight of the total composition, of an ingredient that improves the sensation, preferably from 0.01% to 0.5% by weight of the total composition, more preferably 0.01% at 0.1% by weight of the total composition and from about 99.0% to about 99.99%, preferably from about 99.50% to about 99.99%, and more preferably from 99.90% to about 99.99% of conventional laundry ingredients selected from the group consisting of agents surfactants, detergency builders, chelators. brighteners, bleaching ingredients, photobleaches, enzymes, dirt release polymers, dye transfer inhibitors, fillers, perfumes and mixtures thereof.

All percentages, ratios, and proportions herein are based on weight unless otherwise indicated. All documents cited are incorporated herein by reference in their entirety.

DETAILED DESCRIPTION OF THE INVENTION The present invention provides detergent compositions useful in hand washing operations that provide an especially desirable and noticeable skin feel, attributable to the addition of an ingredient that improves the feeling. Improved sensory effects include freshness, freshness, and a feeling of softness on the skin of consumers during and after use.

Ingredient that improves the sensation An ingredient that improves the sensation is an ingredient that when added to a detergent composition creates a physiological sensation of freshness and freshness on the skin of the hands and arms when the detergent composition dissolves in the washing water. Although one does not wish to be imitated by theory, it is believed that the ingredients that improve the sensation improve the perception of freshness of the nerve endings of the skin by binding with calcium ions (Ca) and reducing their transport through the skin. cellular membrane. A low level of Ca atoms increases the frequency of discharge of cold-sensitive neurons, and as a consequence creates a feeling of freshness. It is also believed that the addition of ingredients that improve the sensation to detergent compositions, leads to slight variations in the rheological properties such as viscosity, surface tension and density, of the washing solution prepared from the detergent composition, improving the sensation of the washing solution on the skin through the hand washing procedure. The best known natural compound that has a refreshing physiological effect is menthol. However, the typically strong pepper odor is generally not accepted by consumers in laundry detergent or dishwashing applications. It has been found that ketals of the formula: wherein R1 represents a C2-C6 alkylene radical having at least 1 but not more than 3 hydroxyl groups, preferably 1 hydroxyl group, and any of R2 and R3 independently of one another represents C1-C10 alkyl which is optionally substituted by 1 to 3 radicals selected from the group consisting of hydroxy, amino and halogen, (such as fluorine, chlorine, bromine or iodine), C5-C7 cycloalkyl, preferably cyclohexyl, Ce-C2 aryio preferably phenyl, with the proviso that the total of C atoms of R2 and R3 is not less than 3, or R2 and R3 together represent an alkyl radical which, together with the carbon atom carrying the radicals R2 and R3 forms a ring of 5-7 members, it being possible that this is] aiquiieno, at the same time it is substituted by Ci-Cd alkyl groups. Preferred radicals R2 and R3 comprise methyl, isopropyl and tert-butyl. The length of the radicals R2 and R3 influences the effect of the compounds. Shorter radicals lead to an immediate, short effect, while longer radicals lead to a delayed but prolonged effect. Preferred R 1 radicals are 1, 2 and 1, 3 alkylene radicals which, together with the two oxygen atoms and with the carbon atom to which two oxygen atoms are adhered, form a dioxolane or dioxane ring. Preferred compounds I in which R2 and R3 together represent an alkylene radical are those of the formula: wherein R 4 to R 15 independently of one another denote hydrogen or C 1 -C 6 alkyl preferably hydrogen or C 1 -C alkyl, and m and n independently of one another denote zero or 1. Preferred compounds of the formula la are those in the which the total of m + n is 1, ie ketals of an optionally substituted cycloexanone. Preferred substituents, of which, in particular, 1 to 3 may be present, are methyl, isopropyl and tert-butyl. The ketals of the formula I can be prepared by known methods. For example, ketal I is generally prepared by acid catalyzed reaction of the ketone in which the ketal I is based and not less than the equivalent amount of C3-C6 aliphatic alcohol having not less than 3 and no more of 5, preferably 3, hydroxyl groups. In general, the ketone on which ketal I is based and not less than .05 molar equivalents, but, as a rule of 1.2 to 4 times, preferably 1.5 to 3 times in excess of this amount of C3 alcohol will be used -C6 which has 3 to 5 hydroxyl groups. A more detailed description of the method for making useful ketals in the present invention can be found in the patent of E.U.A. No. 5,266,592 issued November 30, 1993, to Harrmann & Reimer GmbH, incorporated herein by reference. Ingredients that improve the sensation suitable for use in the present invention include but are not limited to menthol, methyl actate, metoneglycerin acetal, cyclohexanol, 5-methyl-2- (1-methyleneeti) -, 12, propanedium, 3- [5-Methyl-2- (1-methylethyl) cyclohexyl] axi, N, 2,3-trimethyl, 2-isopropyl butanamide and N-ethyl-p-methane-3-carboxamide. Methyl lactate commercially available as Frescoiat® L Cryst from Haarmann & Reimer When included in detergent compositions, these sensory enhancing ingredients provide a person who places their skin in a washing solution containing the detergent composition, a sensory signal connoting less harshness, itching and irritation and therefore mildness. They also impart a sense of freshness and freshness to the consumer.

Incorporation Methods The ingredients that improve the sensation described herein are incorporated into detergent compositions by various methods including but not limited to, spraying on the finished detergent granule, in crystal form or as an admixture, - encapsulated alone in a matrix of water-soluble starch, or encapsulated in combination with a perfume in a water-soluble starch matrix. The amount of ingredient that improves the feeling that is added to detergent compositions is from 0.01% to 1.0% by weight of the total composition, preferably from 0.01% to 0.5% by weight of the total composition, and more preferably from 0.01% by weight. 0.1% by weight of the total composition regardless of the incorporation method. The sensation enhancing ingredient can be sprayed on the finished detergent granules separately or in conjunction with a perfume using conventional spray technology well known in the industry.

The ingredient that improves the sensation can be added in crystallized form to the detergent as an added mixture. After drying and conditioning the base detergent granule, the mixtures are dispersed from dry addition systems in the base granule. The improving sensation ingredient can be added to a detergent composition as a particle encapsulated in a water soluble starch material. The encapsulation procedure is the same whether it is encapsulated alone or in combination with a perfume. Suitable starches for use as the encapsulation matrix in the present invention include hydrolyzed starch, acid-thinned starch, long-chain hydrocarbon starch esters, starch acetates, starch octenyl succinate, and mixtures thereof. The term "hydrolyzed starch" refers to oligosaccharide type materials which are typically obtained by hydrolysis of acid and / or enzymatic starches, preferably corn starch. Hydroxylated starches suitable for inclusion in the present invention include maltodextrins and corn syrup solids. The hydrolyzed starches for inclusion with the starch ester mixture have dextrose equivalent (DE) values of about 10 to about 36 DE. The DE value is a measure of the reductive equivalence of hydroxide starch with reference to dextrose and is expressed as a percentage (on a dry basis). While the DE value is higher, more reducing sugars are present. A method for determining DE values can be found in Standard Anaiytical Methods of the Member Companies of Com Industries Research Foundation, 6th ed., Com Refineries Association, Inc. Washington, DC 1980, D-52. Starch esters having a degree of substitution in the range from about 0.01% to about 10.0% can be used to encapsulate the perfume oils of the present invention. The hydrocarbon portion of the modifying ester must be from a C5 to C2 carbon chain. Preferably, waxy corn starches substituted by octenylsuccinate (OSAN) of various types such as 1) waxy starch: thinned by acid and substituted by OSAN, 2) combination of corn syrup solids: waxy starch substituted by OSAN, and dextrinized, 3) waxy starch: substituted by OSAN and dextrinized, 4) combination of corn syrup solids or maltodextrin with waxy starch: thinned by acid and substituted by OSAN, and then baked and spray dried, 5) waxy starch: thinned by acid and replaced by OSAN and then baked and spray dried, and 6) the high and low viscosities of the above modifications (based on the level of treatment of acid) can also be used in the present invention. Modified starches having emulsifying and emulsion stabilizing capabilities such as octenyl succinate starch have the ability to trap the emulsion-enhancing ingredient due to the hydrophobic character of the starch modifying agent. The ingredient that improves the sensation remains trapped in the modified starch until it dissolves in the washing solution, due to thermodynamic factors, ie, hydrophobic interactions and stabilization of the emulsion due to steric obstruction.

Manufacturing of sensation-improving ingredients encapsulated in starch A suitable process for encapsulating ingredients that improve the sensation is by spray drying an emulsion of the sensation improving ingredient and a starch. First a starch is dissolved in water by stirring the mixture with an impeller rotating at 500 RMP for about 20 minutes. The starch is allowed to stand overnight for de-aeration and complete dispersion to provide a 33% by weight aqueous solution of starch. Alternatively, a pre-prepared solution of liquid starch with a low level of biocide and / or defoamer could be used. The ingredient that improves the feeling is added to the swirl of the starch solution, and is stirred at 300 RPM for 10 minutes. The resulting emulsion is then ultrasonically mixed for 2-4 minutes. Alternative techniques for obtaining submicron emulsion droplet size are well known in the industry and can be used in the present. The drop size of the ingredient that improves the feeling is preferably < 1 miera. The emulsion is then spray-dried by conventional spray drying methods using a current or counter current and is atomized through a rotating disk with air flow to current or countercurrent for drying. The emulsion is dried using an air inlet temperature of 185-200 ° C and an air outlet temperature of 95-115 ° C. After drying, a flow aid such as Sipernat D10 can be added at about 1.0%.

Optional Detersive Ingredients As a preferred embodiment, the conventional detergent ingredients are selected from typical components of detergent composition such as detersive surfactants and detersive binders. Optionally, the detergent ingredients may include one or more other detersive auxiliaries or other materials to assist or improve the cleaning performance, the treatment of the substrate to be cleaned, or to modify the aesthetics of the detergent composition. The usual detersive auxiliaries of detergent compositions include the ingredients disclosed in the US patent. No. 3,936,537, Baskerville et al and Great Britain Patent Application No. 9705617.0, Trinh et al., Published September 24, 1997. Such auxiliaries are included in detergent compositions at their conventional levels of use established in the art. , generally from about 0% to about 80% detergent ingredients, preferably from about 0.5% to about 20% and may include color specks, foaming enhancers, foam suppressors, anti-oxidation and / or anti-corrosion agents, suspending agents of dirt, dirt release agents, dyes, fillers, optical brighteners, germicides, alkalinity sources, hydrotropes, antioxidants, enzymes, enzyme stabilization agents, solvents, solubilizing agents, chelating agents, soil removal / anti-rejection agents clay, polymer dispersion agents, processing aids, tea softening components the static control agents, bleaching agents, bleach activators, bleach stabilizers, etc.

Surfactants The laundry detergent compositions of the present invention may optionally comprise a non-mid-chain branched alkyl sulfate or non-medium chain branched arylsulfonate surfactant. Depending on the embodiment of the present invention, one or more categories of surfactants can be selected by the formulator. The preferred categories of surfactants are selected from the group consisting of anionic, cationic, nonionic, zwitterionic, ampholytic surfactants, and mixtures thereof. Within each category of surfactant, more than one type of surfactant can be selected. For example, preferably the solid (ie granular) and viscous semi-solid (i.e., gelatinous, paste, etc.) systems of the present invention, the surfactant is preferably present to the extent of from about 0.1% to 60%, preferably at about 30% by weight of the composition. Non-limiting examples of surfactants useful herein include: a) alkylbenzene sulfonates (LAS) of Cn-ds; b) C10-C20 branched-chain and random primary alkylsulfates (AS); c) secondary aikelsulfates (2,3), of C10-C18 having the formula: OSO3"M + OSO3" M + CH3 (CH)? (H) CH3 or CH3 (CH2) and (CH) CH2CH3 wherein x and (y + 1) are integers of at least 7, preferably at least 9; said surfactants are described in the patent of E. U.A. 3,234,258 Morris, issued February 8, 1966; the patent of E. U. A. 5,075,041 Lutz, issued on December 24, 1991; the patent of E. U. A. 5,349,101 Lutz et al, issued September 20, 1994; and the patent of E. U. A. 5,389,277 Prieto, issued on February 14, 1995 each incorporated herein by reference. d) alkylalcoxy sulfates (AExS) of Cm-Cis in which preferably x is 1 -7; e) C10-C18 alkylalkoxycarboxylates comprising 1-5 ethoxy units; f) C-? 2-Ci8 alkyl ethoxylates, C6-C12 alkylphenylalkoxylates in which the alkoxylate units are a mixture of ethyleneoxy and propyleneoxy units, C12-C18 alcohol and C6-C12 alkylfenoi condensates with oxide block polymers of ethylene / propylene oxide inter alia Pluronic® ex BASF which is described in US Patent 3,929,678 Laughiin et al, issued December 30, 1975, incorporated herein by reference; g) alkylpolysaccharides as described in the patent of E. U. A. 4,565,647 Filling, issued January 26, 1986, incorporated herein by reference; h) polyhydroxy fatty acid amides having the formula: O R8 7 i 'i R7- C-N-Q wherein R7 is C5-C31 alkyl; R8 is selected from the group consisting of hydrogen, C1-C4 alkyl, C1-C4 hydroxylalkyl, Q is a polyhydroxyalkyl moiety having a linear alkyl chain with at least 3 hydroxyls directly connected to the chain, or an akoxylated derivative of the same; the preferred alkoxy is alkoxy or propoxy, and mixtures thereof; the preferred Q is derived from a reducing sugar in a reductive amination reaction, more preferably Q is a glycityl portion; Q is more preferably selected from the group consisting of CH2 (CHOH) nCH2OH, -CH (CH2OH) (CHOHn-? CH2OH, -CH2 (CHOH) 2- (CHOR ') (CHOH) CH2OH, and akoxylated derivatives thereof, in which n is an integer from 3 to 5, inclusive, and R1 is hydrogen or a cyclic or aliphatic monosaccharide, which are described in US Pat. No. 5,489,393 Conet al, issued February 6, 1996; USA 5,45,982 Murch et al, issued October 3, 1995, both incorporated herein by reference.

Cleaning detergents The detergent composition for hand washing can also include a detergent detergent improver to help control mineral hardness and to improve the removal of particulate soils. Ianic detergent builders or P-containing detergents include, but are not limited to, the metalalcayin, ammonium and alkanolammonium salts of polyphosphates (illustrated by tripolyphosphates, pyrophosphates, and vitiary polymeric metaphosphates), phosphonates, phytic acid, silicates, carbonates (including bicarbonates and sesquicarbonates), sulphates, and aluminosilicates. However, non-phosphate builders are required in some locations. Importantly, the compositions herein work surprisingly well even in the presence of so-called "weak" builders (as compared to phosphates) such as citrate, or in the so-called "sub-improved" situation which can occur with builders. detergency of zeolite or stratified silicate.

Examples of silicate builders are metalalic silicate, particularly those having an Si02: Na20 ratio in the range of 1.6: 1 to 3.2: 1 and layered silicates, such as the layered sodium silicates described in the US Pat. USA 4,664,839, issued May 12, 1987 to H.P. Rieck NaSKS-6 is the trademark for a stratified crystalline silicate marketed by Hoechst (commonly abbreviated herein as "SKS-6"). Unlike zeolite builders, the NaSKS-6 silicate builder does not contain aluminum. NaSKS-6 has the form of a delta-Na2Si? 5 silicate stratified morphology. It can be prepared by methods such as those described in DE-A-3,417,649 and DE-A-3,742,043. SKS-6 is a highly preferred layered silicate for use herein, but other such layered silicates, such as those having the general formula NaMSixO ^ + ry ^ O in which M is sodium or hydrogen, x is a number of 1.9 to 4, preferably 2 and y is a number from 0 to 20, preferably 0, can be used herein. Several other stratified silicates from Hoechst include NaSKS-5, NaSKS-7 and NaSKS-11, such as the alpha, beta and gamma forms. As noted above, the Deita-Na2SiOs form (NaSKS-6 form) is the most preferred for use herein. Other silicates may also be useful such as for example magnesium silicate, which can serve as a crisp agent in granular formulations, as a stabilizing agent for oxygen bleaches, and as a component for systems for foam control. Examples of carbonate builders are alkaline earth metal and metal-metal carbonates as described in German Patent Application No. 2,321,001 published November 15, 1973. Aluminosilicate builders are useful in the present invention. Aluminosilicate builders are of great importance in most heavy duty granular detergent compositions currently marketed, and can also be a significant detergency builder ingredient in liquid detergent formulations. The aluminosilicate builders include those that have the empirical formula: Mz (zAlO2) and] -xH2O in which z and are integers of at least 6, the molar ratio of zay is on the scale of .O to about 0.5, and x is an integer from 15 to about 264. Useful aluminosilicate ion exchange materials are commercially available. These aluminosilicates can be crystalline or amorphous in structure and can be aluminosilicates that occur naturally or derived synthetically. A method for producing aluminosilicate ion exchange materials is described in the US patent. 3,985,669, Krummel, et al, issued October 12, 1976. Synthetic crystalline aromatic ionium ion exchange materials which are preferred herein are available under the designations Zeolite A, Zeolite P (B), Zeolite MAP and Zeolite. X. In a particularly preferred embodiment, the crystalline aluminosilicate ion exchange material has the formula: Na12 [(AI02)? 2 (Si02) i2] -xH20 where x is from about 20 to about 30 , especially about 27. This material is known as Zeolite A. Dehydrated zeo? utes (x = 0-10) can also be used herein. Preferably, the aluminosilicate has a particle size of about 0.1-10 microns in diameter. Organic builders suitable for the purposes of the present invention include, but are not limited to, a wide variety of polyarboxylate compounds. As used herein, "poiearboxylate" refers to compounds having a plurality of carboxylate groups, preferably at least 3 carboxylates. The polycarboxylate builder can generally be added to the composition in acid form, but can also be added in the form of a neutralized sai. When used in the salt form, alkali metals, such as sodium, potassium, and lithium or alkanolammonium salts are preferred. Included among the polycarboxylate builders are a variety of useful material categories. An important category of polycarboxylate builders covers ether polycarboxylates, including oxydisuccinate, as described in Berg, U.S. 3,128,287, issued April 7, 1964, and Lamberti et al, patent of E.U.A. 3,635,830 issued January 18, 1972. Also consult detergency builders "TMS / TDS" of the U.S. patent. No. 4,663,071 issued to Bush et al, on May 5, 1987. Suitable ether polycarboxylates also include cyclic compounds, particularly alicyclic compounds, such as those described in U.S. Pat. 3,923,679; 3,835,163; 4,158,635; 4,120,874 and 4,102,903. Other useful detergent builders include hydroxypolycarboxylate ether, maleic anhydride copolymer with ethylene or vinyl methyl ether, 1,3-trihydroxybenzene-2,4,6-trisulfonic acid, and carboxymethyloxysuccinic acid, various metalalkaline ammonium and substituted ammonium salts of polyacetic acids such as ethylenediaminetetraacetic acid and nitrilotriacetic acid, as well as polyaryboxylates such as mellitic acid, succinic acid, oxydisuccinic acid, polymaleic acid, benzene, 3,5-tricarboxylic acid, carboxymethioxysuccinic acid, and soluble saies of them. Citrate builders, for example, citric acid and soluble saies thereof (in particular sodium salt), are poiiearboxylate builders of particular importance for liquid detergent formulations due to their availability from renewable sources and their biodegradability . The citrates can also be used in granular compositions, especially in combination with zeolite builders and / or layered silicate. Oxydisuccinates are also especially useful in such compositions and combinations. Also suitable in the detergent compositions of the present invention are 3,3-dicarboxy-4-oxa-1,6-hexanedioates and the related compounds which are described in the US patent. No. 4,566,984, Bush, issued January 28, 1986. Useful succinic acid builders include the succinic alkyl and alkenyl acids of Cs-C? O and salts thereof. A particularly preferred compound of this type is dodecenylsuccinic acid. Specific examples of succinate builders include: iauriisuccinate, myristiisuccinate, pamythylsuccinate, 2-dodecenylsuccinate (preferred), 2-pentadecenylsuccinate, and the like. Lauryl succinates are preferred detergency builders of this group, and are described in European patent application 86200690.5 / 0,200,263, published November 5, 1986. Other suitable polycarboxylates are described in the US Pat.

E.U.A. 4,144,226, Crutchfield et al. issued on March 13, 1979 and in the patent of E.U.A. 3,308,067, Diehl, issued March 7, 1967. See also Diehl of the patent of E.U.A. 3,723,322. Fatty acids, for example C12-C18 monocarboxylic acids, can also be incorporated into the compositions alone or in combination with the detergency builders mentioned above, especially citrate and / or succinate builders to provide additional builder activity. Such use of fatty acids will generally result in a decrease in foaming, which should be taken into account by the formulator. In situations where phosphorus-based builders can be used, the various metalalkaline phosphates such as the well-known sodium tripolyphosphates, sodium pyrophosphate and sodium orthophosphate can be used. Phosphonate builders such as ethane-1-hydroxy-1,1-diphosphinate and other known phosphonates (see, for example, US Patents 3,159,581, 3,213,030, 3,422,021, 3,400,148 and 3,422,137) can also be used.

Attached Ingredients The compositions herein may optionally include one or more other adjunct detergent materials or other materials to assist or improve the cleaning performance, the treatment of the substrate to be cleaned, or to modify the aesthetics of the detergent composition ( for example perfumes, dyes, inks, etc.). The following are illustrative examples of such accompanying materials.

Enzymes Enzymes can be included in the formulations herein for a wide variety of fabric washing purposes, including removal of protein-based, carbohydrate-based, or triglyceride-based stains, for example, and for the prevention of transfer of refugee dye, and for fabric restoration. Enzymes to be incorporated include proteases, amylases, lipases, cellulases, and peroxidases, as well as mixtures thereof. Other types of enzymes can also be included. They can be of any suitable origin, such as plant, animal, bacterial, fungal and yeast origin. However, their selection is governed by several factors such as pH activity and / or optimal stability, thermostability, stability against active detergents, builders, etc. In this respect, bacterial or fungal enzymes such as bacterial amuases and proteases and fungal celiac cells are preferred.

Enzyme Stabilizers The enzymes that are used herein are stabilized by the presence of water soluble sources of calcium and / or magnesium ions in the finished compositions that provide such ions to the enzymes. (Calcium ions are generally somewhat more effective than magnesium ions and are preferred herein if only one type of cation is used). Additional stability can be provided by the presence of several other stabilizers that are known in the art, especially borate species: see Severson, of the U.S. patent. 4,537,706.

Bleaching compounds - bleaching agents and bleach activators The detergent compositions herein may optionally contain bleaching agents or bleaching compositions containing a bleaching agent and one or more bleach activators.

When present, the bleaching agents will typically be at levels of from about 1% to about 30%, more typically from about 5% to about 20% of the detergent composition, especially for fabric washing. If present, the amount of bleach activators will typically be from about 0.1% to about 60%. More typically from about 0.5% to about 40% of the bleaching composition comprising the bleaching agent, more bleach activator. Mixtures of bleaching agents can also be used.

Polymeric dirt release agent Any polymeric dirt release agent known to those skilled in the art can optionally be used in the compositions and methods of this invention. Polymeric dirt release agents are characterized by having hydrophilic segments, to hydrophilize the surface of hydrophobic fibers, such as polyester and nylon and hydrophobic segments, to be deposited on hydrophobic fibers and to remain adhered to them through the completion of the cycles wash and rinse and therefore serve as an anchor for the hydrophilic segments. This may allow stains that occur subsequent to the treatment with the dirt release agent to be more easily cleaned in subsequent washing procedures.

Chelating Agents The detergent compositions herein may also optionally contain one or more iron and / or manganese chelating agents. Such chelating agents can be selected from the group consisting of amino carboxylates, amino phosphonates, polyfunctionally substituted aromatic chelating agents and mixtures thereof, all as defined hereinafter. Without wishing to be bound by theory, it is believed that the benefit of these materials is due in part to their exceptional ability to remove iron and manganese ions from wash solutions by the formation of soluble chelates.

Removal / anti-rejection agents of clay soil The compositions of the present invention may also optionally contain water-soluble ethoxylated amines having removal and anti-rejection properties of clay soils. Granular detergent compositions containing these compounds typically contain from about 0.01% to about 10.0% by weight of the water-soluble ethoxylated amines; Liquid detergent compositions typically contain from about 0.01% to about 5%.

Polymer dispersion aids Polymer dispersion agents can be advantageously used at levels of from about 0.1% to about 7% by weight, in the compositions present, especially in the presence of layered silicate builders and / or zeolite Suitable polymeric dispersing agents include polymeric polycarboxylates and polyethylene glycols, although others known in the art may also be used. It is believed, although it is not desired to be limited by theory, that polymer dispersion agents improve the overall performance of the detergent builder, when used in combination with other detergency builders (including lower molecular weight polycarboxylates) by inhibition. of crystal growth, peptization of release of dirt into particles, and anti-redeposition.

Brightener Any optical brighteners or other brightening or whitening agents known in the art can be incorporated at levels typically from about 0.05% to about 1.2% by weight, in the detergent compositions herein. Commercial optical brighteners which may be useful in the present invention may be classified into subgroups, which include, but are not necessarily limited to, stilbene, pyrazoline, coumarin, carboxylic acid, metincyanines, dibenzothiophene-5,5-dioxide derivatives, azoies, 5- and 6-membered ring heterocycles, and other miscellaneous agents. Examples of such brighteners are described in "The Production and Application of Fiuorescent Brightening Agents," M. Zahradnik, Published by John Wiley & Sons, New York (1982).

Dye Transfer Inhibition Aqients The compositions of the present invention may also include one or more materials effective to inhibit the transfer of dyes from one fabric to another during the cleaning process. Usually, such dye transfer inhibiting agents include polyvinyl pyrrolidone polymers, polyamine N-oxide polymers, copolymers of N-vinylpyridione and N-vinylimidazole, manganese phthaiocyanine, peroxidases, and mixtures thereof. If used, these agents will typically comprise from about 0.01% to about 10% by weight of the composition, preferably from about 0.01% to about 5% and more preferably from about 0.05% to about 2%.

Other Ingredients A wide variety of other ingredients useful in detergent compositions may be included in the compositions herein, including other active ingredients, carriers, hydrotropes, processing aids, dyes or pigments, solvents for liquid formulations, solid fillers for bar compositions. , etc. If desired, soluble magnesium salts such as MgCl2l MgSO4 and the like may be added, typically at levels of 0.1% -2%, to provide additional foaming and to improve the fat removal performance. Various detersive ingredients that are used in the present compositions can optionally be stabilized by absorbing said ingredients in a porous hydrophobic substrate, then coating said substrate with a hydrophobic coating. Preferably, the detersive ingredient is mixed with a surfactant before being absorbed into the porous substrate. During use, the detersive ingredient is removed from the substrate in the aqueous wash liquid, where it performs its designed detersive function. The liquid detergent compositions may contain water and other solvents as carriers. Low molecular weight primary or secondary alcohols polished by methanol, ethanoi, propanol, and isopropanol are suitable. Monohydric alcohols are preferred for solubilizing surfactant, but polyols such as those containing from 2 to 6 carbon atoms and from 2 to 6 hydroxy groups (for example 1,3-propanediol, ethylene glycol, glycerin, and 1,2-propanediol) They can also be used. The compositions may contain from 5% to 90%, typically 10% to 50% of said vehicles. The detergent compositions herein will preferably be formulated such that during use in aqueous cleaning operations, the wash water will have a pH of between about 6.5 and about 11, preferably between about 7 and 10. The techniques for controlling pH to Recommended levels of use include the use of pH, alkali, acid regulators, etc., and are well known to those skilled in the art.

Compositions Detergents The agents for improving the sensation described herein are useful in a wide range of detergent compositions that include but are not limited to granular detergents, gels, detergent bars, liquid detergents and dishwashing detergents. In order to make the present invention more easily understood, reference is made to the following examples, which are designed to be illustrative only and are not designed to limit scope.

EXAMPLES Examples 1-7. granular detergents EXAMPLE 8 Liquid detergent for dishwashing 10 EXAMPLE 9 Liquid detergent for dishwashing fifteen twenty EXAMPLE 10 Detergent bar DETERGENT BAR EXAMPLE 12 After hand washing 1.1 gk laundry load using an intelligent composition without an ingredient that improves the added feeling and subsequently using the same detergent composition containing 0.5% encapsulated starch Frescoiat ML as an ingredient that improves the feeling, 69% of 32 consumer panelists generally preferred the solution with an ingredient that improves the feeling. 75% of panelists preferred it for cleaning and 66% of panelists preferred it because of the skin sensation it provides against the same detergent composition without an ingredient that improves the sensation. These sensory tests were conducted with a product concentration of 4800ppm in 7 liters of water at a hardness of 12gpg. These conditions are typical of a hand washing system.

Claims (10)

NOVELTY OF THE INVENTION CLAIMS

1. - A granular detergent composition comprising: (a) conventional detergent ingredients selected from the group consisting of surfactants, builders, chelators, brighteners, bleaching agents, enzymes, soil release polymers, dye transfer inhibitors, fillers, perfumes and mixtures thereof; and (b) an effective amount of an improving sensation ingredient, which is capable, in a dilution of the granular detergent composition in water, of inducing a cooling effect on human skin placed or in contact with the dilution.

2. A granular detergent composition comprising: (a) from about 99% to about 99.99%, conventional laundry ingredients selected from the group consisting of surfactants, detergency builders, chelators, brighteners, bleaching agents, photobleaching agents, enzymes, dirt release polymers, dye transfer inhibitors, fillers, perfumes and mixtures thereof; and (b) from 0.01% by weight to 1.0% by weight of an ingredient that improves the sensation, which is capable, in a dilution of the granular detergent composition in water, of inducing a cooling effect on human skin placed or in contact with the dilution.

3. - The detergent composition according to claim 1 or claim 2, further characterized in that the ingredient that improves the sensation is selected from the group consisting of menthol, methyl lactate, metoneglycerin acetal, cyclohexanol, 5-methyl-2- (1- methyletenyl) -, 1,2-propanedium, 3- [5-methyl-2- (1-methylethyl) -cyhohexyl] axi-, N, 2,3-trimethyl, 2-isopropyl-butanamide, and N-ethyl ! -p-menthane-3-carboxamide.

4. The detergent composition according to claim 3, further characterized in that the ingredient that improves the sensation is methyl lactate.

5. The detergent composition according to claim 1 or claim 2, further characterized in that the ingredient that improves the sensation is encapsulated in a matrix of modified starch.

6. The detergent composition according to claim 5, further characterized in that the modified starch that is used to encapsulate the improving sensation ingredient comprises a raw material of starch that has been modified by treatment of said raw material of starch with octenyl succinic acid anhydride.

7. The detergent composition according to claim 1 or claim 2, further characterized in that said enhancing ingredient is encapsulated, along with a perfume, in a matrix of modified starch.

8. - The detergent composition according to claim 7, further characterized in that the modified starch that is used to encapsulate the sensory enhancing ingredient and perfume, comprises a raw material of starch that has been modified by treating said raw material of starch with octenyl succinic acid anhydride.

9. The detergent composition according to claim 1 or claim 2, further characterized in that said sensing improving ingredient is added to the detergent composition in the form of crystals.

10. The detergent composition according to claim 1 or claim 2, further characterized in that the ingredient that improves the sensation is sprinkled on the finished detergent granule.