Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/50—Perfumes
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets

Definitions

• the present invention relates to detergent compositions comprising sensory enhancing ingredients
• the sensory enhancing ingredients provide improved sensory perceptions including improved mildness, and a feeling of freshness and coolness on the skin especially when used in granular detergents for handwash operations
• Detergent compositions in the form of synthetic detergent granules and liquids are used in may areas throughout the world for purposes of laundering soiled clothes In areas in which mechanical washing machines are not prevalent, laundering soiled clothes generally entails some sort of handwashing operation Such geographic areas use detergent compositions in granular, paste, gel, or bar form In operations involving hand laundering, the hands and arms of the user are typically exposed to the aqueous wash solutions in which the detergent composition is contained Repeated exposure to wash solutions during handwashing operations can lead to skin irritation which can eventually lead to skin lesions, itching, burning, cracking or other skin damage Many attempts have been made by formulators of handwash laundry detergents to alleviate the detrimental effects of hand laundering operations on the arms and hands of users of such detergent products It is therefore desirable to have a laundry detergent composition suitable for handwash operations which exhibits mildness toward the skin of users while maintaining cleaning performance
• the present invention relates to detergent compositions that signal mildness to the consumer during the wash and thereby significantly improve consumer acceptance of such compositions
• the present invention also relates to detergent compositions that improve the consumers' overall experience through the handwash process
• compositions containing conventional surfactant systems By the present invention it has now been discovered that by adding sensory enhancing ingredients to detergent compositions containing conventional surfactant systems, the resulting compositions are perceived to be milder than compositions without the sensory enhancing ingredient These compositions also impart a freshness and coolness to the wash solution and consumers' skin during the wash Additionally, the sensory enhancing ingredients do not have a detrimental impact on the cleaning performance ofthe compositions
• the present invention solves the long-standing need for a simple, effective, hand wash detergent composition which delivers superior cleaning and provides a mild and fresh skin feel during and after the wash
• the present invention relates to detergent compositions comprising from 0 01% to 1 0% by weight of the total composition, of a sensory enhancing ingredient, preferably 0 01%) to 0 5% by weight of the total composition, most preferably 0 01 % to 0 1% by weight of the total composition and from about 99 0% to about 99 99%, preferably from about 99.50% to 99 99%, and most preferably 99 90%o to about 99 99% of conventional laundry ingredients selected from the group consisting of surfactants, builders, chelants, brighteners, bleaching ingredients, photobleaches, enzymes, soil release polymers, dye transfer inhibitors, fillers, perfumes and mixtures thereof
• the present invention provides detergent compositions useful in handwashing operations which provide an especially desirable and noticeable skin-feel, attributable to the addition of a sensory enhancing ingredient
• the enhanced sensory effects include coolness, freshness, and a mild feeling on the skin of consumers during and after use Sensory enhancing ingredient
• a sensory enhancing ingredient is an ingredient that when added to a detergent composition creates a physiological sensation of freshness and coolness on the skin ofthe hands and arms when the detergent composition is dissolved in the wash water While not wishing to be bound by theory, it is believed that the sensory enhancing ingredients enhance the perception of coolness on the nerve's endings ofthe skin by binding with calcium (Ca) ions and reducing their transport through the cellular membrane A low level of Ca ions increases the frequency of discharge ofthe neurons sensible to cold, and as a consequence creates a cooling sensation
• R 1 represents a C 2 -C 6 -alkylene radical having at least 1, but not more than 3, hydroxyl group(s), preferably 1 hydroxyl group
• R 2 and R independently of one another represent Ci-Cio alkyl which is optionally substituted by 1 to 3 radicals selected from the group comprising hydroyl, amino and halogen (such as fluorine, chlorine, bromine or iodine), C 5 -C 7 cycloalkyl, preferably cyclohexyl, C 6 -C ⁇ 2 aryl, preferably phenyl, with the proviso that the total of the C atoms of R 2 and R ⁇ is not less than 3, or R 2 and R ⁇ together represent an alkylene radical which, together with the carbon atom which carries the radicals R 2 and R 3 , forms a 5-7 membered ring, it being possible for this alkylene radical, in turn to be substituted by Cj-C 6 alkyl groups
• Preferred radicals R 2 and R 3 comprise
• Preferred radicals R ! are 1,2-and 1,3-alkylene radicals which, together with the two oxygen atoms and with the carbon atom to which the two oxygen atoms are attached, form a dioxolane or dioxane ring.
• Preferred compounds I in which R 2 and R' together represent an alkylene radical are those ofthe formula:
• R to R independently of one another denote hydrogen or Ci-C f , alkyl, preferably hydrogen or C ⁇ -C alkyl, and m and n independently of one another denote zero or 1.
• Preferred compounds of the formula la are those in which the total of m+n is 1, i.e. ketals of an optionally substituted cyclohexanone.
• Preferred substituents, of which there may be present, in particular, 1 to 3, are methyl, isopropyl and tert. -butyl.
• ketals of the formula 1 can be prepared by known processes.
• ketal 1 will generally be prepared by acid-catalyzed reaction of the ketone on which ketal 1 is based and not less than the equivalent amount of aliphatic C3-C6 alcohol having not less than 3 and not more than 5 preferably 3, hydroxyl groups.
• the ketone on which ketal 1 is based and not less than 05 mol equivalents but, as a rule a 1.2 to 4 fold preferably 1.5 to 3 fold excess of this amount of the C3-C6 alcohol having 3 to 5 hydroxyl groups will be used.
• a more detailed description of the method of making ketals useful in the present invention can be found in US Patent No. 5,266,592 issued November 30, 1993 to Haarmann & Reimer GmbH, herein incorporated by reference.
• Sensory enhancing ingredients suitable for use in the present invention include but are not limited to menthol, methyl lactate, methoneglycerine acetal, cyclohexanol, 5- methyl-2-(l-methylethenyl)-,l,2 propanedio, 3-[5-methyl-2-(l- methylethyl)cyclohexyl]axy-, N,2,3-trimethyl, 2-isopropyl butanamide, and N-ethyl-p- menthan-3-carboxamide.
• methyl lactate commercially available as Frescolat ® ML Cryst from Haarmann & Reimer.
• these sensory enhancing ingredients deliver to a person who places his skin into a wash solution containing the detergent composition, a sensory signal that connotes less roughness, itching and irritation and therefore mildness They also impart a feeling of coolness and freshness to the consumer Methods of Incorporation
• the sensory enhancing ingredients described herein are incorporated into detergent compositions by various methods including but not limited to spraying on the finished detergent granule, in crystal form as an admix, encapsulated alone in a water soluble starch matrix, or encapsulated in combination with a perfume in a water soluble starch matrix
• the amount of sensory enhancing ingredient added to detergent compositions is from 0 01%) to 1 0%) by weight of the total composition, preferably 0 01 % to 0 5% by weight of the total composition, and most preferably 0 01%> to 0 1%> by weight of the total composition regardless ofthe method of incorporation
• the sensory enhancing ingredient can be sprayed onto the finished detergent granules separately or in conjunction with a perfume using conventional spray-on technology well known in the industry
• the sensory enhancing ingredient can be added in crystallized form to the detergent as an admix After drying and conditioning of the base detergent granule, admixes are dispersed from dry addition systems onto the base granule
• the sensory enhancing ingredient can be added to a detergent composition as a particle encapsulated in a water soluble starch material
• the process of encapsulation is the same whether encapsulated alone or in combination with a perfume
• Starches suitable for use as the encapsulating matrix in the present invention include hydrolyzed starch, acid thinned starch, stai ch esters of long chain hydrocarbons, starch acetates, starch octenyl succinate, and mixtures thereof
• hydrolyzed starch 1 refers to oligosaccha ⁇ de-type materials that are typically obtained by acid and/or enzymatic hydrolysis of starches, preferably corn starch Suitable hydrolyzed starches for inclusion in the present invention include maltodext ⁇ ns and corn syrup solids
• the hydrolyzed starches for inclusion with the mixture of starch esters have a Dextrose Equivalent (DE) values of from about 10 to about 36 DE
• the DE value is a measure of the reducing equivalence of the hydrolyzed starch referenced to dextrose and expressed as a percent (on a dry basis) The higher the DE value, the more reducing sugars present
• a method for determining DE values can be found in Standard Analytical Methods of the Member Companies of Corn Industries Research Foundation, 6th ed Corn Refineries Association, Inc Washington, DC 1980, D-52
• Starch esters having a degree of substitution in the range of from about 0 01% to about 10 0% may be used to encapsulate the perfume oils of the present invention
• the hydrocarbon part of the modifying ester should be from a C 5 to C ⁇ 6 carbon chain
• octenylsuccinate (OS AN) substituted waxy corn starches of various types such as 1) waxy starch acid thinned and OSAN substituted, 2) blend of corn syrup solids waxy starch, OSAN substituted, and dextrinized, 3) waxy starch' OSAN substituted and dextrinized, 4) blend of corn syrup solids or maltodextrins with waxy starch acid thinned OSAN substituted, and then cooked and spray dried, 5) waxy starch acid thinned and OSAN substituted then cooked and spray dried, and 6) the high and low viscosities of the above modifications (based on the level of acid treatment) can also be used in the present invention
• Modified starches having emulsifying and emulsion stabilizing capacity such as starch octenyl succinates have the ability to entrap the sensory enhancing ingredient in the emulsion due to the hydrophobic character of the starch modifying agent The sensory enhancing ingredient remains trapped in the modified starch until dissolved in the wash solution, due to thermodynamic factors i e , hydrophobic interactions and stabilization of the emulsion because of steric hindrance Manufacture of Starch Encapsulated Sensory Enhancing Ingredients
• One suitable process for encapsulation of sensory enhancing ingredients is by spray drying of an emulsion of the sensory enhancing ingredient and a starch
• a starch is dissolved in water by agitating the mixture with an impeller rotating at 500 RPM for about 20 minutes
• the starch is left to sit overnight for deareation and complete dispersion to yield a 33wt%> aqueous solution of starch
• a pre-prepared liquid starch solution with a low level of biocide and/or defoamer can be used
• the sensory enhancing ingredient is added to the vortex of the starch solution, and agitated at 300 RPM for 10 minutes
• the resultant emulsion is then ultrasonically mixed for 2-4 minutes
• Alternate techniques for obtaining submicron emulsion droplet size are well known in the industry and can be employed here
• the sensory enhancing ingredient droplet size is preferably ⁇ 1 micrometer
• the emulsion is then spray dried by conventional spray drying methods using a co-current or counter-current
• the conventional detergent ingredients are selected from typical detergent composition components such as detersive surfactants and detersive builders
• the detergent ingredients can include one or more other detersive adjuncts or other materials for assisting or enhancing cleaning performance, treatment of the substrate to be cleaned, or to modify the aesthetics of the detergent composition
• Usual detersive adjuncts of detergent compositions include the ingredients set forth in U S Pat No.
• adjuncts are included in detergent compositions at their conventional art-established levels of use, generally from 0% to about 80% of the detergent ingredients, preferably from about 0.5%) to about 20% and can include color speckles, suds boosters, suds suppressors, antitarnish and/or anticorrosion agents, soil-suspending agents, soil release agents, dyes, fillers, optical brighteners, germicides, alkalinity sources, hydrotropes, antioxidants, enzymes, enzyme stabilizing agents, solvents, solubilizing agents, chelating agents, clay soil removal/anti-redeposition agents, polymeric dispersing agents, processing aids, fabric softening components, static control agents, bleaching agents, bleaching 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-mid chain branched aryl sulphonate surfactant Depending upon the embodiment of the present invention one or more categories of surfactants may be chosen by the formulator 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 of surfactant can be selected For example, preferably the solid (i e granular) and viscous semi-solid (i e gelatinous, pastes, etc ) systems of the present invention, surfactant is preferably present to the extent of from about 0 1%) to 60 %, preferably to about 30% by weight of the composition
• Nonlimiting examples of surfactants useful herein include a) C ⁇ -Cis alkyl benzene sulfonates (LAS), b) C1 -C20 primary, branched-chain and random alkyl sulfates (AS), c) C10-C 1 secondary (2,3) alkyl sulfates having the formula
• x and (y + 1) are integers of at least about 7, preferably at least about 9, said surfactants disclosed in U S. 3,234,258 Morris, issued February 8, 1966; U.S 5,075,041 Lutz, issued December 24, 1991 , U.S 5,349, 101 Lutz et al., issued September 20, 1994, and U S 5,389,277 Prieto, issued February 14, 1995 each incorporated herein by reference, d) C10-C18 alkyl alkoxy sulfates (AE X S) wherein preferably x is from 1-7, e) C]o-Ci8 alkyl alkoxy carboxylates preferably comprising 1-5 ethoxy units, f) C12-C18 alkyl ethoxylates, C ⁇ -Cn alkyl phenol alkoxylates wherein the alkoxylate units are a mixture of ethyleneoxy and propyleneoxy units, C 12 -C ⁇ « alcohol and C 6 - C12 alkyl phenol condens
• R' is C5-C3 ] alkyl
• R° is selected from the group consisting of hydrogen, C ] -C4 alkyl, C ] -C4 hydroxyalkyl
• Q is a polyhydroxyalkyl moiety having a linear alkyl chain with at least 3 hydroxyls directly connected to the chain, or an alkoxylated derivative thereof, preferred alkoxy is ethoxy or propoxy, and mixtures thereof
• preferred Q is derived from a reducing sugar in a reductive animation reaction, more preferably Q is a glycityl moiety, Q is more preferably selected from the group consisting of -CH2(CHOH) n CH2OH, - CH(CH 2 OH)(CHOH) n .
• n is an integer from 3 to 5, inclusive
• R' is hydrogen or a cyclic or aliphatic monosaccha ⁇ de, which are described in U S 5,489,393 Connor et al , issued February 6, 1996, and U S 5,45,982 Murch et al , issued October 3, 1995, both incorporated herein by reference Detergency Builders
• the handwashing detergent composition may also include a detergent builder to assist in controlling mineral hardness and to enhance the removal of particulate soils
• Inorganic or P-containing detergent builders include, but are not limited to, the alkali metal, ammonium and alkanolammonium salts of polyphosphates (exemplified by the t ⁇ polyphosphates, pyrophosphates, and glassy polymeric meta-phosphates), phosphonates, phytic acid, silicates, carbonates (including bicarbonates and sesquicarbonates), sulphates, and aluminosihcates
• non-phosphate builders are required in some locations
• the compositions herein function surprisingly well even in the presence of the so-called "weak” builders (as compared with phosphates) such as citrate, or in the so- called "underbuilt” situation that may occur with zeolite or layered silicate builders
• silicate builders are the alkali metal silicates, particularly those having a S ⁇ O Na 2
• carbonate builders are the alkaline earth and alkali metal carbonates as disclosed in German Patent Application No 2,321 ,001 published on November 15, 1973
• Aluminosilicate builders are useful in the present invention Aluminosilicate builders are of great importance in most currently marketed heavy duty granular detergent compositions, and can also be a significant builder ingredient in liquid detergent formulations Aluminosilicate builders include those having the empirical formula M z (zAlO 2 ) y ] xH 2 O wherein z and y are integers of at least 6, the molar ratio of z to y is in the range from 1 0 to about 0 5, and x is an integer from about 15 to about 264
• aluminosilicate ion exchange materials are commercially available These aluminosihcates can be crystalline or amorphous in structure and can be naturally- occurring aluminosi cates or synthetically derived
• a method for producing aluminosilicate ion exchange materials is disclosed in U S Patent 3,985,669, Krummel, et al, issued October 12, 1976
• Preferred synthetic crystalline aluminosilicate ion exchange materials useful herein are available under the designations Zeolite A, Zeolite P (B), Zeolite MAP and Zeolite X
• the aluminosilicate has the formula Na
• Organic detergent builders suitable for the purposes of the present invention include, but are not restricted to, a wide variety of polycarboxylate compounds
• polycarboxylate refers to compounds having a plurality of carboxylate groups, preferably at least 3 carboxylates
• Polycarboxylate builder can generally be added to the composition in acid form, but can also be added in the form of a neutralized salt When utilized in salt form, alkali metals, such as sodium, potassium, and lithium, or alkanolammonium salts are preferred
• polycarboxylate builders include a variety of categories of useful materials
• One important category of polycarboxylate builders encompasses the ether polycarboxylates, including oxydisuccinate, as disclosed in Berg, U S Patent 3, 128,287, issued April 7, 1964, and Lamberti et al, U S Patent 3,635,830, issued January 18, 1972 See also "TMS/TDS" builders of U S Patent 4,663,071 , issued to Bush et al, on May 5, 1987
• Suitable ether polycarboxylates also include cyclic compounds, particularly alicyc c compounds, such as those described in U S Patents 3,923,679, 3,835, 163, 4, 158,635, 4, 120,874 and 4, 102,903
• ether hydroxypolycarboxylates copolymers of maleic anhydride with ethylene or vinyl methyl ether, 1 , 3, 5-t ⁇ hydroxy benzene-2, 4, 6-t ⁇ sulphon ⁇ c acid, and carboxymethyloxysuccinic acid
• various alkali metal, ammonium and substituted ammonium salts of polyacetic acids such as ethylenediamine tetraacetic acid and nit ⁇ lot ⁇ acetic acid
• polycarboxylates such as mellitic acid, succimc acid, oxydisuccinic acid, polymaleic acid, benzene 1 ,3,5- t ⁇ carboxyhc acid, carboxymethyloxysuccinic acid, and soluble salts thereof
• Citrate builders e g , citric acid and soluble salts thereof (particularly sodium salt), are polycarboxylate builders of particular importance for liquid detergent formulations due to their availability from renewable resources and their biodegradability Citrates can also be used in granular compositions, especially in combination with zeolite and/or layered silicate builders Oxydisuccinates are also especially useful in such compositions and combinations
• succimc acid builders include the C5- C 2Q alkyl and alkenyl succimc acids and salts thereof
• a particularly preferred compound of this type is dodecenylsuccinic acid
• succinate builders include laurylsuccinate, myristylsuccinate, palmitylsuccinate, 2-dodecenylsuccinate (preferred), 2- pentadecenylsuccinate, and the like Laurylsuccinates are the preferred builders of this group, and are described in European Patent Application 86200690 5/0,200,263, published November 5, 1986
• Fatty acids e g , C] 2 -C ] g monocarboxylic acids
• Such use of fatty acids will generally result in a diminution of sudsing, which should be taken into account by the formulator
• the various alkali metal 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 - diphosphonate and other known phosphonates (see, for example, U S Patents 3,159,581 , 3,213,030, 3,422,021, 3,400, 148 and 3,422, 137) can also be used
• compositions herein can optionally include one or more other detergent adjunct materials or other materials for assisting or enhancing cleaning performance, treatment of the substrate to be cleaned, or to modify the aesthetics of the detergent composition (e g , perfumes, colorants, dyes, etc )
• additional detergent adjunct materials for assisting or enhancing cleaning performance, treatment of the substrate to be cleaned, or to modify the aesthetics of the detergent composition (e g , perfumes, colorants, dyes, etc )
• the following are illustrative examples of such adjunct materials
• Enzymes - Enzymes can be included in the formulations herein for a wide variety of fabric laundering purposes, including removal of protein-based, carbohydrate-based, or triglyceride-based stains, for example, and for the prevention of refugee dye transfer, and for fabric restoration
• the enzymes to be incorporated include proteases, amylases, lipases, cellulases, and peroxidases, as well as mixtures thereof
• Other types of enzymes may also be included They may be of any suitable origin, such as vegetable, animal, bacterial, fungal and yeast origin However, their choice is governed by several factors such as pH-activity and/or stability optima, thermostability, stability versus active detergents, builders and so on In this respect bacterial or fungal enzymes are preferred, such as bacterial amylases and proteases, and fungal cellulases
• Enzyme Stabilizers The enzymes employed herein are stabilized by the presence of water-soluble sources of calcium and/or magnesium ions in the finished compositions which 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 being used ) Additional stability can be provided by the presence of various other art-disclosed stabilizers, especially borate species see Severson, U S 4,537,706
• bleaching agents will typically be at levels of from about 1% to about 30%, more typically from about 5%o to about 20%, of the detergent composition, especially for fabric laundering 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-plus-bleach activator Mixtures of bleaching agents can also be used
• Polymeric Soil Release Agent Any polymeric soil release agent known to those skilled in the art can optionally be employed in the compositions and processes of this invention
• Polymeric soil release agents are characterized by having both hydrophihc segments, to hydrophi ze the surface of hydrophobic fibers, such as polyester and nylon, and hydrophobic segments, to deposit upon hydrophobic fibers and remain adhered thereto through completion of washing and rinsing cycles and, thus, serve as an anchor for the hydrophihc segments This can enable stains occurring subsequent to treatment with the soil release agent to be more easily cleaned in later washing procedures
• the detergent compositions herein may also optionally contain one or more iron and/or manganese chelating agents
• chelating agents can be selected from the group consisting of amino carboxylates, amino phosphonates, polyfunctionally-substituted aromatic chelating agents and mixtures therein, all as hereinafter defined Without intending 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 washing solutions by formation of soluble chelates
• compositions of the present invention can also optionally contain water-soluble ethoxylated amines having clay soil removal and antiredeposition properties
• Granular detergent compositions which contain these compounds typically contain from about 0 01% to about 10 0% by weight of the water-soluble ethoxylates amines, liquid detergent compositions typically contain about 0 01% to about 5%
• Polymeric Dispersing Agents can advantageously be utilized at levels from about 0 1% to about 7%, by weight, in the compositions herein, especially in the presence of zeolite and/or layered silicate builders Suitable polymeric dispersing agents include polymeric polycarboxylates and polyethylene glycols, although others known in the art can also be used It is believed, though it is not intended to be limited by theory, that polymeric dispersing agents enhance overall detergent builder performance, when used in combination with other builders (including lower molecular weight polycarboxylates) by crystal growth inhibition, particulate soil release peptization, and anti-redeposition
• 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, into the detergent compositions herein
• Commercial optical brighteners which may be useful in the present invention can be classified into subgroups, which include, but are not necessarily limited to, derivatives of stilbene, pyrazo ne, couma ⁇ n, carboxy c acid, mefhinecyanines, d ⁇ benzoth ⁇ ophene-5,5-d ⁇ ox ⁇ de, azoles, 5- and 6-membered- ⁇ ng heterocycles, and other miscellaneous agents
• subgroups include, but are not necessarily limited to, derivatives of stilbene, pyrazo ne, couma ⁇ n, carboxy c acid, mefhinecyanines, d ⁇ benzoth ⁇ ophene-5,5-d ⁇ ox ⁇ de, azoles, 5- and 6-membered- ⁇ ng heterocycles, and other miscellaneous agents
• compositions of the present invention may also include one or more materials effective for inhibiting the transfer of dyes from one fabric to another during the cleaning process
• dye transfer inhibiting agents include polyvinyl pyrro done polymers, polyamine N-oxide polymers, copolymers of N-vinylpyrrohdone and N-vinylimidazole, manganese phthalocyanine, peroxidases, and mixtures thereof If used, these agents 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%
• compositions herein A wide variety of other ingredients useful in detergent compositions can 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 MgCl , MgSOzi, and the like, can be added at levels of, typically, 0 l%>-2%, to provide additional suds and to enhance grease removal performance
• detersive ingredients employed in the present compositions optionally can be further stabilized by absorbing said ingredients onto a porous hydrophobic substrate, then coating said substrate with a hydrophobic coating
• the detersive ingredient is admixed with a surfactant before being absorbed into the porous substrate
• the detersive ingredient is released from the substrate into the aqueous washing liquor, where it performs its intended detersive function
• Liquid detergent compositions can contain water and other solvents as carriers
• Low molecular weight primary or secondary alcohols exemplified by methanol, ethanol, propanol, and isopropanol are suitable
• Monohyd ⁇ c alcohols are preferred for solubihzing surfactant, but polyols such as those containing from 2 to about 6 carbon atoms and from 2 to about 6 hydroxy groups (e g , 1,3-propaned ⁇ ol, ethylene glycol, glycerine, and 1,2- propanediol) can also be used
• the compositions may contain from 5% to 90%, typically 10%) to 50%) of such carriers
• 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 1 1, preferably between about 7 and 10 Techniques for controlling pH at recommended usage levels include the use of buffers, alkalis, acids, etc , and are well known to those skilled in the art Detergent Compositions
• the sensory enhancing agent disclosed herein are useful in a wide range of detergent compositions including but not limited to granular detergents, gels, detergent bars, liquid detergents and dishwashing detergents

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