US3538009A - Method for reducing skin irritation in detergent compositions - Google Patents
Method for reducing skin irritation in detergent compositions Download PDFInfo
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- US3538009A US3538009A US613095A US3538009DA US3538009A US 3538009 A US3538009 A US 3538009A US 613095 A US613095 A US 613095A US 3538009D A US3538009D A US 3538009DA US 3538009 A US3538009 A US 3538009A
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- detergent
- mildness
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- detergents
- skin
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- 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
- C11D3/16—Organic compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/37—Esters of carboxylic acids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/74—Biological properties of particular ingredients
- A61K2800/75—Anti-irritant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S424/00—Drug, bio-affecting and body treating compositions
- Y10S424/03—Hair bleach
Definitions
- the present invention relates to novel detergent compositions of reduced skin irritation that is normally associated with the use of detergents, to additives employed in combination with skin-irritating detergents, and to detergent formulations containing such additives.
- the detergent compositions of the present invention comprise a detergent in combination with a mildness additive; said mildness additive or its salt being soluble or, when liquid, colloidally dispersible; the polar groups of the mildness additive being compatible with those of the detergent and stable in aqueous media; the weight ratio of said mildness additive to said detergent varying from 0.005 to 10.
- soluble and dispersible are meant to define solubility or dispersibility of the mildness additive in concentrations in which the mildness additive is employed in actual use, e.g., 0.5 to 5% by weight.
- the irritation of the skin by the action of detergents is believed to be caused by the penetration of the detergent into the skin, causing separation and/or degradation of the protein molecules of the keratin layer, thereby exposing the living cells of the skin to the detergent and, more significantly, exposing these cells to other, more irritating compounds associated with the detergent.
- the damage to the cells caused by this contact is believed to result in irritation, inflammation, and dermatitis.
- the mildness additives employed in the detergent compositions of the present invention are believed to counteract this breakdown by providing additional bridges between the keratin molecules, thereby preventing the penetration of the detergent molecules through the keratin into the living tissue. It is to be understood, however, that we do not wish to be bound by the foregoing explanation of the activity of the mildness additives of the present invention, and that such explanation is only set forth for a better understanding of the present invention.
- the preferred mildness additives employed in combination with irritating detergents are the polymerized ethylenically unsaturated C -C fatty acids and polar group-containing derivatives thereof.
- the polymerized fatty acids contain from 2 to 4 monomeric acid units and, consequently, from 2 to 4 carboxyl groups.
- the polymerization of ethylenically unsaturated fatty acids into dimer, trimer, and tetramer acids is known in the art and generally results in a cycloaliphatic ring structure.
- the dimer acid derived from linoleic acid has the structure
- the dimer, trimer, and tetramer acids are commercially available.
- the mildness additive need not be pure, but that a mixture of mildness additives can be employed such as the mixture of dimer and trimer acids, and that the mildness additive can, furthermore, contain compounds which do not add to the mildness properties of the additive such as unpolymerized fatty acids.
- Suitable mildness additives which are based on a fatty acid dimer linking radical include the following in which [D] represents the carboxyl-free residue of a dimerized fatty acid and [T] represents the carboxyl-free residue of a trimer acid:
- mildness additives described hereinabove can be employed with any detergent, anionic, cationic, nonionic, or amphoteric in nature. It will be apparent, however, that the polar groups of the mildness additive should be compatible with those of the detergent to avoid insolubilization of both detergent and additive. The reduction of skin irritation will be observable in all compatible combinations, although the extent of the anti-irritant effect will differ with the various mildness additives discussed,
- the described mildness additive is less useful, although the mildness effect of the additive can be established when such detergents, which at normally used concentrations cause little or no skin irritation, are tested at high concentrations and/or longer periods of contact with the skin.
- the anti-irritation effect of the mildness additive is exhibited over a wide range of proportions of additive to detergent as indicated above. However, optimum results are generally obtained when the ratio of detergent to mildness additive is in the range of 3:1 to 1:3. This preferred range is applicable regardless of whether the detergent is employed in a dilute or concentrated form.
- Anionic detergents which are improved by combination with the described mildness additive include both the soap and the non-soap detergents.
- soaps are the sodium, potassium, ammonium, and alkylolammonium salts of higher fatty acids (C to C
- Nonsoap anionic detergents with which the described mildness additives are suitably employed include alkyl sulfates, alkyl sul onates, alkyl benzene sulfonates, alkyl phenyl polyoxyalkylene sulfonates, alkyl glyceryl ether sulfonates, alkyl monoglyceride sulfates, alkyl monoglyceride sulfonates, alkyl polyoxyethylene ether sulfates, acyl sarcosinates, acyl esters of isethionates, acyl-N-methyl taurides, dialkyl esters of sulfosuccinic acid, and mixture
- the alkyl or acyl radicals contain from 9 to carbon atoms.
- these detergents are employed in the form of sodium, potassium, ammonium, and alkylolammonium salts, as well as similar water-soluble salts.
- Specific examples include sodium lauryl sulfate, potassium-N-methyl lauroyl tauride, triethanol-ammonium dodecyl sulfonate, potassium polypropylene benzene sulfonate, sodium lauryl sulfonate, dioctyl ester of sodium sulfosuccinic acid, sodium salt of lauryl polyoxyethylene sulfate, and sodium salt of tridecylether polyoxyethylene sulfate.
- the cationic detergents which can be reduced in their skin irritation by the addition of the mildness additives of the present invention include, in particular, quaternary ammonium salts which contain at least one alkyl group having from 12 to 20 carbon atoms.
- quaternary ammonium salts which contain at least one alkyl group having from 12 to 20 carbon atoms.
- the halide ions are the preferred anions, other suitable anions include acetate, phosphate, sulfate, nitrite, and the like.
- Specific cationic detergents include distearyl dimethyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, stearyl trimethyl ammonium chloride, coco dimethyl benzyl ammonium chloride, dicoco dimethyl ammonium chloride, cetyl pyridinium chloride, cetyl trimethyl ammonium bromide, stearyl amine salts that are soluble in water such as stearyl amine acetate and stearyl amine hydrochloride, stearyl dimethyl amine hydrochloride, distearyl amine hydrochloride, alkyl phenoxyethoxyethyl dimethyl ammonium chloride, decyl pyridinium bromide.
- Amphoteric, also referred to as ampholitic, detergents which can be improved by the addition of the described mildness additives include alkyl B iminodipropionate, alkyl-fl-arninopropionate, fatty imidazolines, betaines, and mixtures thereof.
- alkyl B iminodipropionate alkyl-fl-arninopropionate
- fatty imidazolines fatty imidazolines
- betaines betaines
- amphoteric detergents are 1 coco-5-hydroxyethyl-5-carboxymethyl imidazoline, dodecyl-fl-alanine, the inner salt of 2-trimethylamino lauric acid, and N-dodecyl-N,N-dimethyl aminoacetic acid.
- the mildness additives of the present invention can also be employed in combination with nonionic detergents, although the beneficial effects of the addition of the mildness additive are less pronounced since nonionic detergents are inherently not as irritating as the above-described detergents.
- Nonionic detergents include, in particular, the alkylene oxide ethers of phenols, fatty alcohols, and alkyl mercaptans, the alkylene oxide esters of fatty acids, the alkylene oxide ethers of fatty acid amides, the condensation products of ethylene oxide with partial fatty acid esters, and mixtures thereof.
- the polyoxyalkylene chain in such agents can contain from 5 to 30 alkylene oxide units in which each alkylene unit has from 2 to 3 carbon atoms.
- nonionic detergents include nonyl phenol polyoxyethylene ether, tridecyl alcohol polyoxyethylene ether, dodecyl mercaptan polyoxyethylene thioether, the lauric ester of polyethylene glycol, the lauric ester of methoxy polyethylene glycol, the lauric ester of sorbitan polyoxyethylene ether, and mixtures thereof.
- the mildness additives of the present invention are particularly effective in reducing the irritation caused by such anionic detergents as the alkyl sulfates and sulfonates and the alkyl benzene sulfates and sulfonates, and by such cationic detergents as the described fatty alkyl-containing quaternary ammonium compounds.
- detergents described hereinabove are employed in their commercial applications in combination with builders or other additives, depending on the intended commercial utility of the detergent.
- the presence of such additives does not affect the ability of the mildness additive to counteract the skin irritation caused by the detergent.
- the skin irritation is caused by the action of the detergent on the skin in causing the keratin of the skin to break down.
- the detergent itself may not be extremely irritating, it allows other materials employed in combination with the detergent which are highly irritating to come in contact with the living tissue of the skin, even though in the absence of the detergent such materials are nonirritating in not being able to break down the keratin of the skin.
- the mildness additives of the present invention are, therefore, capable of protecting the skin against skin irritation caused by such additives.
- Builders employed in commercial detergent formulations are generally alkali salts of weak inorganic acids used alone or in admixtures, such as alkali metal, ammonium or substituted ammonium salts of carbonates, borates, phosphates, polyphosphates, bicarbonates, and silicates. Specific examples of such salts are sodium tripolyphosphate, sodium carbonate, sodium tetraborate, sodium pyrophosphate, sodium bicarbonate, potassium bicarbonate,.sodium monoand di-orthophosphate, sodium metasilicate, and mixtures thereof.
- the built detergent compositions of the present invention can, furthermore, contain other adjuvants normally employed in detergent compositions such as perfumes, anti-tarnishing agents, anti-redeposition agents, bacteriostatic agents, dyes, fluorescers, fabric softeners, oxygen or chlorine bleaches, suds builders, suds depressors, sequestrants, and the like.
- adjuvants normally employed in detergent compositions such as perfumes, anti-tarnishing agents, anti-redeposition agents, bacteriostatic agents, dyes, fluorescers, fabric softeners, oxygen or chlorine bleaches, suds builders, suds depressors, sequestrants, and the like.
- the inorganic builders or the combination of the builders an the adjuvants described can constitute up to of the built detergent composition, the remainder of the built detergent composition being the detergent and the mildness additive.
- the detergent compositions of the present invention include laundry detergents, kitchen detergents, shampoos, industrial detergents, and the like.
- the use of the mildness additive of the present invention does not affect the effective concentrations of the detergent, and hence concentrations of detergents heretofore employed are also applicable in the modified compositions of the present invention.
- the use of the mildness additive is, however, not limited to unbuilt or built detergent compositions.
- the additive can be employed in any compositions in which a detergent of the type described is employed in aqueous solution in the presence of other materials which may cause skin irritation such as, in particular, in aqueous following additional ingredients were added as indicated: lubricants containing inorganic salts, a particular example Igepal CA-630, a commercially available nonionic Wetof which is aqueous cutting fluids.
- the detercipal test employed in the data presented below is an gent and the mildness additive are each p y in the nimal i m i t t using f l lbi guinea i data illustrated below in a concentration of Weight The anim l, Weighing bo t 300 t 325 i i d percent based on the described 100 g. concentrate.
- Each 15 accordingly adlhsted t0 takelnto Conslderatlon t e animal is thoroughly rinsed and dried after each immerlower actWe detergent eoheehtratlohsion.
- the skin of 15 f vvlflg examples Illustrate the effect of the each animal i x mined for gross h d grades mildness additives of the present invention on skin irriare assigned which represent the degree of damage to the tatlon Caused y detergents, 118mg the above-described skin. In general, three animals are tested simultaneously testin the same solution.
- the grading system is based on a MPLES 1 to 6 Scale to 10 whlch the numbers have the followmg
- the detergent employed in this series of tests was an meanings. alkyl benzene sulfonate having the formula Grade or rating Gross reaction Skin damage -OH2O 11H23 1 Severe cracking and bleeding, Extremely severe,
- test solution a g. concentrate is The tests and determination of results illustrated in first prepared which is then employed in the test solution Examples 1-6 were repeated using sodium lauryl sulphate in 1% by volume concentration. In order to prepare a. instead of the alkyl benzene sulfonate. The results are homogeneous concentrate which is readily dilutable, the illustrated in Table II.
- the concentrate contained 22.5% of the Amphicide and was employed as a 2% test solution containing EXAMPLES 28 AND 29
- the tests and determination of results illustrated in Examples 1-6 were repeated using Standpol ES-2, a commercially available 26% active detergent containing the sodium salt of lauryl 0 through C diether sulfate.
- the foregoing examples have illustrated the mildnessinducing etfect of the mildness additives when employed in combination with skin irritating detergents.
- the skin irritation caused by the detergent is compounded by detergent builders or other components present in the composition.
- the foregoing examples clearly demonstrate that the mildness agents employed in combination with the detergents are particularly effective in reducing skin irritation where the skin irritation is compounded by the presence of other agents, organic or inorganic.
- the overall chemical structure of the mildness additives of the present invention is similar to that of a detergent, it will be apparent that the mildness additives of the present invention can be employed in combination with a skin irritating detergent in any environment, i.e., in the presence of any component in which the detergent can exist.
- the foregoing examples further illustrate that the greatest benefit of the described invention is realized when the mildness additives are combined with detergents or with detergent-containing compositions which cause skin irritation.
- an aqueous detergent composition involving contact with the skin, said detergent composition containing a skin irritating detergent selected from the group consisting of anionic, cationic, non-ionic, and amphoteric organic detergents, the improvement comprising reducing the skin irritation of said composition by incorporating therein a mildness additive in an amount of .005 to 10 parts by weight based on said skin irritating detergent, said mildness additive comprising the polymerized product of 2 t0 4 molecules of a monomeric C to C fatty acid, said product containing 2 to 4 carboxyl or carboxyl salt groups, said mildness additive being soluble or colloidally dispersible in aqueous media, the mildness additive and detergent compositions being stable and compatible in aqueous media.
- a skin irritating detergent selected from the group consisting of anionic, cationic, non-ionic, and amphoteric organic detergents
- anionic detergent is alkyl benzene sulfonate, alkyl sulfate, alkyl benzene sulfates, or alkyl sulfonate.
- the detergent composition contains from 10 to by weight of the composition of water soluble inorganic detergent builders.
- amphoteric detergent is an alkyl-B-imino propionate.
- the detergent composition contains from 10 to 80% by weight of the composition of water soluble inorganic detergent builders.
Abstract
The degree of skin irritation of detergent compositions is reduced by adding small amounts of compounds having at least two polar groups, e.g. hydroxyl, carboxyl, ester, amino, and amido groups separated by an organic radical of at least 15 carbon atoms which contains a cyclic group. In particular, various aliphatic, aromatic and heterocyclic amino, amido and ester derivatives of polymerized fatty acids are disclosed.
Description
3,538,009 METHOD FOR REDUCING SKIN IRRITATION IN DETERGENT COMPOSITIONS Ralph Kelly, Cincinnati, and Edmond Jean Ritter, Loveland, Ohio, assignors to The Cincinnati Milling Machine Co., Cincinnati, Ohio, a corporation of Ohio N Drawing. Filed Feb. 1, 1967, Ser. No. 613,095 Int. Cl. Clld 3/20, 1/08, 1/12 US. Cl. 252-152 12 Claims ABSTRACT OF THE DISCLOSURE The degree of skin irritation of detergent compositions is reduced by adding to the detergent composition small amounts of polymerized fatty acid or salt thereof, e.g. dimer acid.
DISCLOSURE The present invention relates to novel detergent compositions of reduced skin irritation that is normally associated with the use of detergents, to additives employed in combination with skin-irritating detergents, and to detergent formulations containing such additives.
Most detergents intrinsicially irritate the skin, although the degree of irritation will vary significantly with the detergent. Such irritation can result when the skin is contacted with an aqueous solution of such detergent or when such detergent is retained by a fabric on washing with such detergent and then comes into contact with the skin. As a result of such skin irritation, many otherwise useful detergents are excluded from applications where such detergents come into contact with the skin.
In other detergent compositions, e.g., dishwashing liquids and shampoos, a certain degree of skin irritation can be tolerated and is accepted, although not desirable. The cause for this irritation is not clearly understood but it is believed that detergents have a denaturing effect on the keratin of the skin. Although numerous attempts have been made to develop additives which reduce or eliminate skin irritation, the additives developed have found only limited success for a very narrow range of detergent compositions.
It is therefore an object of the present invention to provide novel detergent compositions.
It is another object of the present invention to provide novel detergent compositions in which skin irritation is significantly reduced or eliminated.
It is a further object of the present invention to provide a mildness additive which is capable of reducing skin irritation for a broad spectrum of detergents.
It is still another object of the present invention to provide a detergent composition of detergent and mildness additive in which the mildness additive is effective in a broad spectrum of environments.
Other objects will become apparent from the following description and claims.
The detergent compositions of the present invention comprise a detergent in combination with a mildness additive; said mildness additive or its salt being soluble or, when liquid, colloidally dispersible; the polar groups of the mildness additive being compatible with those of the detergent and stable in aqueous media; the weight ratio of said mildness additive to said detergent varying from 0.005 to 10. The terms soluble and dispersible are meant to define solubility or dispersibility of the mildness additive in concentrations in which the mildness additive is employed in actual use, e.g., 0.5 to 5% by weight.
In accordance with the present invention it was discovered that skin irritation and other more severe forms of dermatitis caused (by the contact of detergents with United States Patent 0 Patented Nov. 3, 1970 skin can be reduced if not eliminated by employing the detergent in combination with amildness additive which contains at least two polar groups capable of interacting with the protein molecules of the skin, e.g., by hydrogen bonding. The nature of the bond occurring between protein molecules and the mildness additive is not clearly understood. The irritation of the skin by the action of detergents is believed to be caused by the penetration of the detergent into the skin, causing separation and/or degradation of the protein molecules of the keratin layer, thereby exposing the living cells of the skin to the detergent and, more significantly, exposing these cells to other, more irritating compounds associated with the detergent. The damage to the cells caused by this contact is believed to result in irritation, inflammation, and dermatitis. The mildness additives employed in the detergent compositions of the present invention are believed to counteract this breakdown by providing additional bridges between the keratin molecules, thereby preventing the penetration of the detergent molecules through the keratin into the living tissue. It is to be understood, however, that we do not wish to be bound by the foregoing explanation of the activity of the mildness additives of the present invention, and that such explanation is only set forth for a better understanding of the present invention.
The preferred mildness additives employed in combination with irritating detergents are the polymerized ethylenically unsaturated C -C fatty acids and polar group-containing derivatives thereof. Generally, the polymerized fatty acids contain from 2 to 4 monomeric acid units and, consequently, from 2 to 4 carboxyl groups. The polymerization of ethylenically unsaturated fatty acids into dimer, trimer, and tetramer acids is known in the art and generally results in a cycloaliphatic ring structure. Thus, the dimer acid derived from linoleic acid has the structure The dimer, trimer, and tetramer acids are commercially available. It will be apparent, in view of the foregoing discussion, that the mildness additive need not be pure, but that a mixture of mildness additives can be employed such as the mixture of dimer and trimer acids, and that the mildness additive can, furthermore, contain compounds which do not add to the mildness properties of the additive such as unpolymerized fatty acids. Suitable mildness additives which are based on a fatty acid dimer linking radical include the following in which [D] represents the carboxyl-free residue of a dimerized fatty acid and [T] represents the carboxyl-free residue of a trimer acid:
The mildness additives described hereinabove can be employed with any detergent, anionic, cationic, nonionic, or amphoteric in nature. It will be apparent, however, that the polar groups of the mildness additive should be compatible with those of the detergent to avoid insolubilization of both detergent and additive. The reduction of skin irritation will be observable in all compatible combinations, although the extent of the anti-irritant effect will differ with the various mildness additives discussed,
as well as with the detergent. Since some of the detergents, particularly nonionic detergents, are by themselves relatively nonirritating, the described mildness additive is less useful, although the mildness effect of the additive can be established when such detergents, which at normally used concentrations cause little or no skin irritation, are tested at high concentrations and/or longer periods of contact with the skin.
The anti-irritation effect of the mildness additive is exhibited over a wide range of proportions of additive to detergent as indicated above. However, optimum results are generally obtained when the ratio of detergent to mildness additive is in the range of 3:1 to 1:3. This preferred range is applicable regardless of whether the detergent is employed in a dilute or concentrated form.
Anionic detergents which are improved by combination with the described mildness additive include both the soap and the non-soap detergents. Examples of such soaps are the sodium, potassium, ammonium, and alkylolammonium salts of higher fatty acids (C to C Nonsoap anionic detergents with which the described mildness additives are suitably employed include alkyl sulfates, alkyl sul onates, alkyl benzene sulfonates, alkyl phenyl polyoxyalkylene sulfonates, alkyl glyceryl ether sulfonates, alkyl monoglyceride sulfates, alkyl monoglyceride sulfonates, alkyl polyoxyethylene ether sulfates, acyl sarcosinates, acyl esters of isethionates, acyl-N-methyl taurides, dialkyl esters of sulfosuccinic acid, and mixtures thereof. In these non-soap detergents, the alkyl or acyl radicals contain from 9 to carbon atoms. As in the soaps, these detergents are employed in the form of sodium, potassium, ammonium, and alkylolammonium salts, as well as similar water-soluble salts. Specific examples include sodium lauryl sulfate, potassium-N-methyl lauroyl tauride, triethanol-ammonium dodecyl sulfonate, potassium polypropylene benzene sulfonate, sodium lauryl sulfonate, dioctyl ester of sodium sulfosuccinic acid, sodium salt of lauryl polyoxyethylene sulfate, and sodium salt of tridecylether polyoxyethylene sulfate.
The cationic detergents which can be reduced in their skin irritation by the addition of the mildness additives of the present invention include, in particular, quaternary ammonium salts which contain at least one alkyl group having from 12 to 20 carbon atoms. Although the halide ions are the preferred anions, other suitable anions include acetate, phosphate, sulfate, nitrite, and the like. Specific cationic detergents include distearyl dimethyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, stearyl trimethyl ammonium chloride, coco dimethyl benzyl ammonium chloride, dicoco dimethyl ammonium chloride, cetyl pyridinium chloride, cetyl trimethyl ammonium bromide, stearyl amine salts that are soluble in water such as stearyl amine acetate and stearyl amine hydrochloride, stearyl dimethyl amine hydrochloride, distearyl amine hydrochloride, alkyl phenoxyethoxyethyl dimethyl ammonium chloride, decyl pyridinium bromide. pyridinium chloride derivative of the acetylainino ethyl esters of lauric acid, lauryl trimethyl ammonium chloride, decyl amine acetate, lauryl dimethyl ethyl ammonium chloride, the lactic acid and citric acid and other acid salts of stearyl-l-amido-imidazoline with methyl chloride, benzyl chloride, chloroacetic acid and similar compounds m xtures of the foregoing, and the like.
Amphoteric, also referred to as ampholitic, detergents which can be improved by the addition of the described mildness additives include alkyl B iminodipropionate, alkyl-fl-arninopropionate, fatty imidazolines, betaines, and mixtures thereof. Specific examples of such amphoteric detergents are 1 coco-5-hydroxyethyl-5-carboxymethyl imidazoline, dodecyl-fl-alanine, the inner salt of 2-trimethylamino lauric acid, and N-dodecyl-N,N-dimethyl aminoacetic acid.
As indicated above, the mildness additives of the present invention can also be employed in combination with nonionic detergents, although the beneficial effects of the addition of the mildness additive are less pronounced since nonionic detergents are inherently not as irritating as the above-described detergents. Nonionic detergents include, in particular, the alkylene oxide ethers of phenols, fatty alcohols, and alkyl mercaptans, the alkylene oxide esters of fatty acids, the alkylene oxide ethers of fatty acid amides, the condensation products of ethylene oxide with partial fatty acid esters, and mixtures thereof. The polyoxyalkylene chain in such agents can contain from 5 to 30 alkylene oxide units in which each alkylene unit has from 2 to 3 carbon atoms. Specific examples of nonionic detergents include nonyl phenol polyoxyethylene ether, tridecyl alcohol polyoxyethylene ether, dodecyl mercaptan polyoxyethylene thioether, the lauric ester of polyethylene glycol, the lauric ester of methoxy polyethylene glycol, the lauric ester of sorbitan polyoxyethylene ether, and mixtures thereof.
The mildness additives of the present invention are particularly effective in reducing the irritation caused by such anionic detergents as the alkyl sulfates and sulfonates and the alkyl benzene sulfates and sulfonates, and by such cationic detergents as the described fatty alkyl-containing quaternary ammonium compounds.
Many of the detergents described hereinabove are employed in their commercial applications in combination with builders or other additives, depending on the intended commercial utility of the detergent. The presence of such additives does not affect the ability of the mildness additive to counteract the skin irritation caused by the detergent. As indicated above, it is believed that the skin irritation is caused by the action of the detergent on the skin in causing the keratin of the skin to break down. Although the detergent itself may not be extremely irritating, it allows other materials employed in combination with the detergent which are highly irritating to come in contact with the living tissue of the skin, even though in the absence of the detergent such materials are nonirritating in not being able to break down the keratin of the skin. The mildness additives of the present invention are, therefore, capable of protecting the skin against skin irritation caused by such additives. Builders employed in commercial detergent formulations are generally alkali salts of weak inorganic acids used alone or in admixtures, such as alkali metal, ammonium or substituted ammonium salts of carbonates, borates, phosphates, polyphosphates, bicarbonates, and silicates. Specific examples of such salts are sodium tripolyphosphate, sodium carbonate, sodium tetraborate, sodium pyrophosphate, sodium bicarbonate, potassium bicarbonate,.sodium monoand di-orthophosphate, sodium metasilicate, and mixtures thereof.
The built detergent compositions of the present invention can, furthermore, contain other adjuvants normally employed in detergent compositions such as perfumes, anti-tarnishing agents, anti-redeposition agents, bacteriostatic agents, dyes, fluorescers, fabric softeners, oxygen or chlorine bleaches, suds builders, suds depressors, sequestrants, and the like. The inorganic builders or the combination of the builders an the adjuvants described can constitute up to of the built detergent composition, the remainder of the built detergent composition being the detergent and the mildness additive.
The detergent compositions of the present invention include laundry detergents, kitchen detergents, shampoos, industrial detergents, and the like. The use of the mildness additive of the present invention does not affect the effective concentrations of the detergent, and hence concentrations of detergents heretofore employed are also applicable in the modified compositions of the present invention.
The use of the mildness additive is, however, not limited to unbuilt or built detergent compositions. The additive can be employed in any compositions in which a detergent of the type described is employed in aqueous solution in the presence of other materials which may cause skin irritation such as, in particular, in aqueous following additional ingredients were added as indicated: lubricants containing inorganic salts, a particular example Igepal CA-630, a commercially available nonionic Wetof which is aqueous cutting fluids. ting agent of octylphenyxypoly(oxethylene)ethanol; tri- In establishing the irritation and the mildness effect ethanol amine, and eaPIie aeiti- The tiiethahoi amine is of the additive, the skin is contacted by immersion or p y t 21110W Salt formation f mildness additives other means with a solution containing the detergent with p y in combination With anionic detergents and and without the mildness additive under standardized the cePTie acid is employed for the Same P p in conditions more specifically described below. The prinbiiiatioii With cationic deteigehts- In general, the detercipal test employed in the data presented below is an gent and the mildness additive are each p y in the nimal i m i t t using f l lbi guinea i data illustrated below in a concentration of Weight The anim l, Weighing bo t 300 t 325 i i d percent based on the described 100 g. concentrate. Where up to the thoracic region in the test solution at 40 C. e built detergent i p y e amoiihthf detergent for 4.5 hours per day on three successive days. Each 15 accordingly adlhsted t0 takelnto Conslderatlon t e animal is thoroughly rinsed and dried after each immerlower actWe detergent eoheehtratlohsion. Three days after the last immersion, the skin of 15 f vvlflg examples Illustrate the effect of the each animal i x mined for gross h d grades mildness additives of the present invention on skin irriare assigned which represent the degree of damage to the tatlon Caused y detergents, 118mg the above-described skin. In general, three animals are tested simultaneously testin the same solution. The grading system is based on a MPLES 1 to 6 Scale to 10 whlch the numbers have the followmg The detergent employed in this series of tests was an meanings. alkyl benzene sulfonate having the formula Grade or rating Gross reaction Skin damage -OH2O 11H23 1 Severe cracking and bleeding, Extremely severe,
death of skin tissue. death in most instances. 2 Severe cracking and moderate Do.
bleeding. 5 3 Sever; cratckinghsigght to Severe. 4 nfittrii fittin 0 The detergent was employed in 100% active form or in 2 g s gg 3 87% active form, the latter form containing sodium sul- 7 Edema, sli itb'i ts fate. The mildness additives employed in this series comscalihg' prised the dimer of linoleic acid commercially available 1' ht li d t Sli ht. c lem zi Hg and mo me E as Empol 1022. The dimer acid contained 2-5% of 9 Slight redness and edema D0. 10 Normal Normal unpolymerized lrnoleic acid and 19 ?2% of trlmer acid. Table I illustrates the results obtained employing the above-described test. The actual composition of the Despite the fact that this exposure test is conducted solution to which the animals Were exposed is shown. The using extremely dilute solutions, it is an exaggerated remainder of the composition of the test solution not test, although it has been established (see Canadian Pat. indicated in the table was Water.
TABLE I Detergent Dimer Additive Other additive Ratio of detergent Percent Percent Percent Percent Average Improvement to mildness Example No. concentration active Type concentration Type concentration rating inrating additive 1 Death.
639,398) that the test correlates extremely well with the EXAMPLES 7 to 15 skin irritation efiect observed on human skin.
In preparing the test solution, a g. concentrate is The tests and determination of results illustrated in first prepared which is then employed in the test solution Examples 1-6 were repeated using sodium lauryl sulphate in 1% by volume concentration. In order to prepare a. instead of the alkyl benzene sulfonate. The results are homogeneous concentrate which is readily dilutable, the illustrated in Table II.
TAB LE II Detergent Dimer Additive Other additive Ratio of detergent Percent Percent Percent Percent Average Improvement to mildness Example No. concentration active Type concentration Type concentration rating in rating additive l6 0. 15 g i 7 4 1 .1 0.15 024 6+ 3+ 3 =2 l6 0.1305 034 7 a 7.8 0. 15 0. l5 0. 10 7- 7- 1:1 0. 15 0. 033 5+ 5+ 3: 1
7 EXAMPLES 16 TO 19 8 0.45% Amphicide and resulted in an average rating of 5. The average rating was improved to 9 by the addition of 0.15% of dimer acid and 0.10% of triethanol amine to the test solution.
EXAMPLES 24 AND 25 The tests and determination of results illustrated in Examples 16 were repeated using Orvus AB, a commercially available linear alkane sulfonate detergent con- TABLE III Detergent Dimer Additive Other additive Ratio of detergent Percent Percent Percent Percent Average Improvement to mildness Example No. concentration active Type concentration Type concentration rating in rating additive 0.15 100 TEA 0.06 7+ 0.15 0.15 TEA 0.15 8+ 1 1:1 0.45 TEA 0.18 0. 45 0. 45 TEA 0.45 7+ 7+ 1; 1
EXAMPLES 20 AND 21 The tests and determination of results illustrated in Examples 1-6 were repeated using a commercialy availtaining 40% of a linear alkane sulfonate, 43% of sodium sulfate, and 15% of sodium chloride. The following results were obtained (Table IV).
TABLE IV Detergent Dimer Additive Other additive Ratio of detergent Percent Percent Percent Percent Average Improvement to mildness Example No. concentration active Type concentration Type concentration rating in rating additive 24 0.375 40 25 0.375 40 Acid 0 15 TEA 0.10 7 7 1:1
1 Death.
EXAMPLES 22 AND 23 The tests and determination of results illustrated in Examples 16 were repeated using a commercially available amphoteric phenolic detergent commercially avail- EXAMPLES 26 AND 27 The tests and determination of results illustrated in Examples 16 were repeated using Orvus K, a commercially available modified ammonium lauryl sulfate detergent containing an amide builder having the following composition:
Percent Alkyl sulfate 37.5 Alkanol amide 9.2
Unsulfated alcohol 1 1.2 Ammonium sulfate 0.9 Ammonium chloride 1 0 Denatured ethyl alcohol 20:0
The following results were obtained (Table V).
TABLE V Detergent Dimer Additive Other additive Ratio of detergent Percent Percent Percent Percent Average Improvement to mildness Example No. concentration active Type concentration Type concentration rating in rating additive 26 0. 40 37. 5 6 27 0. 40 37. 5 Acid 0.15 TEA 0.10 9- -3 1;1
able as Amphicide containing in 75% concentration the following active components:
The concentrate contained 22.5% of the Amphicide and was employed as a 2% test solution containing EXAMPLES 28 AND 29 The tests and determination of results illustrated in Examples 1-6 were repeated using Standpol ES-2, a commercially available 26% active detergent containing the sodium salt of lauryl 0 through C diether sulfate.
The following results were obtained (Table VI).
TABLE VI Detergent Dimer Additive Other additive Ratio of detergent Percent Percent Percent Percent Average Improvement to mildness Example N0. concentration active Type concentration Type concentration iatiug in rating additive 28 0.5718 26 5 29 0.5718 26 Acid 0.15 TEA 0. 10 8+ 3+ 1:1
9 EXAMPLE 30 To a 1% solution of a shampoo commercially available as Prell was added 2% by weight of the solution of the triethanol amine salt of the dimer acid of Examples 1-6. Using the above-described exposure test, a rating of 7 was obtained. In the absence of the mildness additive the animals exposed died.
The foregoing examples have illustrated the mildnessinducing etfect of the mildness additives when employed in combination with skin irritating detergents. In many detergent-containing compositions the skin irritation caused by the detergent is compounded by detergent builders or other components present in the composition. The foregoing examples clearly demonstrate that the mildness agents employed in combination with the detergents are particularly effective in reducing skin irritation where the skin irritation is compounded by the presence of other agents, organic or inorganic. In view of the fact that the overall chemical structure of the mildness additives of the present invention is similar to that of a detergent, it will be apparent that the mildness additives of the present invention can be employed in combination with a skin irritating detergent in any environment, i.e., in the presence of any component in which the detergent can exist. The foregoing examples further illustrate that the greatest benefit of the described invention is realized when the mildness additives are combined with detergents or with detergent-containing compositions which cause skin irritation.
In view of the extreme diversity of detergent compositions available today, it will be apparent that a demonstration of reduced skin irritation of all detergent compositions with the described mildness additives is not possible. However, such is not deemed necessary and the foregoing examples are deemed sutficient to illustrate the scope of the invention but are not intended to limit the scope of the invention to such.
What is claimed is:
1. In the method of utilizing an aqueous detergent composition involving contact with the skin, said detergent composition containing a skin irritating detergent selected from the group consisting of anionic, cationic, non-ionic, and amphoteric organic detergents, the improvement comprising reducing the skin irritation of said composition by incorporating therein a mildness additive in an amount of .005 to 10 parts by weight based on said skin irritating detergent, said mildness additive comprising the polymerized product of 2 t0 4 molecules of a monomeric C to C fatty acid, said product containing 2 to 4 carboxyl or carboxyl salt groups, said mildness additive being soluble or colloidally dispersible in aqueous media, the mildness additive and detergent compositions being stable and compatible in aqueous media.
2. The method of claim 1 wherein the mildness additive is the dimer and contains two carboxyl groups or carboxyl salt groups.
3. The method of claim 2 wherein the mildness additive is the dimer of linoleic acid.
4. The method of claim 1 wherein the detergent is an anionic detergent.
5. The method of claim 4 wherein the anionic detergent is alkyl benzene sulfonate, alkyl sulfate, alkyl benzene sulfates, or alkyl sulfonate.
6. The method of claim 1 wherein the detergent is a cationic detergent.
7. The method of claim 1 wherein the cationic detergent is a quaternary ammonium compound.
8. The method of claim 1 wherein the detergent composition contains from 10 to by weight of the composition of water soluble inorganic detergent builders.
9. The method of claim 1 wherein the detergent is an amphoteric detergent.
10. The method of claim 9 wherein the amphoteric detergent is an alkyl-B-imino propionate.
11. The method of claim 5 wherein the detergent composition contains from 10 to 80% by weight of the composition of water soluble inorganic detergent builders.
12. The process of claim 1 wherein the weight ratio of millness additive to detergent is from 0.33 to 3.
References Cited UNITED STATES PATENTS 1,178,142 4/1916 Ellis 260-407 2,388,767 1l/l945 Safrin 252121 2,473,798 6/ 1949 Kienle et al 260407 X 2,626,897 1/1953 Young et al. 252-35 2,899,389 8/1959 Allison 25235 3,239,546 3/1966 Rogier 260407 X 3,157,629 11/1964 Patrick 260407 X 3,200,079 8/1965 et al 252161 3,257,377 6/1966 Hannah et a1. 260407 X 3,272,805 9/ 1966 Hausermann et a1.
3,278,444 10/1966 McDonald 252121 3,267,038 8/1966 100 et al 252l38 LEON D. ROSDOL, Primary Examiner M. HALPERN, Assistant Examiner US. Cl. X.R.
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US61309567A | 1967-02-01 | 1967-02-01 | |
US69650968A | 1968-01-09 | 1968-01-09 | |
NL6802006.A NL160162C (en) | 1967-02-01 | 1968-02-13 | PROCESS FOR THE SELF-KNOWN PREPARATION OF A PREPARATION CONTAINING AT LEAST ONE DETERGENT AND AT LEAST A SKIN SOFTENER. |
US14057671A | 1971-05-05 | 1971-05-05 | |
US14060471A | 1971-05-05 | 1971-05-05 | |
US05/406,955 US3947382A (en) | 1967-02-01 | 1973-10-16 | Mildness additive |
Publications (1)
Publication Number | Publication Date |
---|---|
US3538009A true US3538009A (en) | 1970-11-03 |
Family
ID=27555201
Family Applications (7)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US613095A Expired - Lifetime US3538009A (en) | 1967-02-01 | 1967-02-01 | Method for reducing skin irritation in detergent compositions |
US696509A Expired - Lifetime US3630934A (en) | 1967-02-01 | 1968-01-09 | Mildness additive |
US05/046,561 Expired - Lifetime US4075318A (en) | 1967-02-01 | 1970-06-15 | Skin protective compositions |
US05/046,560 Expired - Lifetime US4067345A (en) | 1967-02-01 | 1970-06-15 | Method and compositions for retarding chemical damage to hair with treating agents containing two or more polar groups |
US00140576A Expired - Lifetime US3798182A (en) | 1967-02-01 | 1971-05-05 | Mildness additive |
US00140604A Expired - Lifetime US3769242A (en) | 1967-02-01 | 1971-05-05 | Mildness additive |
US05/406,955 Expired - Lifetime US3947382A (en) | 1967-02-01 | 1973-10-16 | Mildness additive |
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Application Number | Title | Priority Date | Filing Date |
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US696509A Expired - Lifetime US3630934A (en) | 1967-02-01 | 1968-01-09 | Mildness additive |
US05/046,561 Expired - Lifetime US4075318A (en) | 1967-02-01 | 1970-06-15 | Skin protective compositions |
US05/046,560 Expired - Lifetime US4067345A (en) | 1967-02-01 | 1970-06-15 | Method and compositions for retarding chemical damage to hair with treating agents containing two or more polar groups |
US00140576A Expired - Lifetime US3798182A (en) | 1967-02-01 | 1971-05-05 | Mildness additive |
US00140604A Expired - Lifetime US3769242A (en) | 1967-02-01 | 1971-05-05 | Mildness additive |
US05/406,955 Expired - Lifetime US3947382A (en) | 1967-02-01 | 1973-10-16 | Mildness additive |
Country Status (8)
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US (7) | US3538009A (en) |
AT (1) | AT295007B (en) |
BE (1) | BE726664A (en) |
CH (1) | CH515990A (en) |
DE (1) | DE1717099B2 (en) |
FR (1) | FR1602753A (en) |
GB (1) | GB1221241A (en) |
NL (1) | NL160162C (en) |
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US4076799A (en) * | 1972-12-27 | 1978-02-28 | Cincinnati Milacron, Inc. | Method of inhibiting skin irritation |
US4110263A (en) * | 1977-06-17 | 1978-08-29 | Johnson & Johnson Baby Products Company | Mild cleansing compositions containing alkyleneoxylated bisquaternary ammonium compounds |
US4247425A (en) * | 1979-05-07 | 1981-01-27 | Sherex Chemical Company, Inc. | Light duty non-irritating detergent compositions |
US4256611A (en) * | 1978-09-13 | 1981-03-17 | Sherex Chemical Company, Inc. | Light duty non-irritating detergent compositions |
DE4228594A1 (en) * | 1992-08-27 | 1994-03-03 | Maeurer & Wirtz Gmbh & Co Kg | Agent for cleaning and conditioning hair, skin, textiles and hard surfaces |
US20090012166A1 (en) * | 2005-07-11 | 2009-01-08 | Hans Uwe Wolf | Oligomers of Straight-Chain and Unbranched Fatty Acids and Drugs Containing These |
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US20070169285A1 (en) * | 2006-01-25 | 2007-07-26 | Saroja Narasimhan | Method and kit for coloring hair |
US20100193253A1 (en) * | 2009-01-30 | 2010-08-05 | Massey Alan J | Earth-boring tools and bodies of such tools including nozzle recesses, and methods of forming same |
US9095518B2 (en) | 2013-08-01 | 2015-08-04 | Liqwd, Inc. | Methods for fixing hair and skin |
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CN110101590A (en) * | 2015-10-08 | 2019-08-09 | 知识产权全资有限公司 | For handling the method and its kit of hair |
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CN105496804A (en) * | 2015-12-25 | 2016-04-20 | 知识产权全资有限公司 | Formula for hair treatment and head psoriasis treatment, reagent kit thereof and application |
US20170216175A1 (en) * | 2016-02-01 | 2017-08-03 | Active Concepts, LLC | Use of bis-amino compounds for treatment of hair |
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US3947382A (en) * | 1967-02-01 | 1976-03-30 | Cincinnati Milacron, Inc. | Mildness additive |
US4160819A (en) * | 1972-12-27 | 1979-07-10 | Cincinnati Milacron, Inc. | Method of inhibiting skin irritation |
US4076799A (en) * | 1972-12-27 | 1978-02-28 | Cincinnati Milacron, Inc. | Method of inhibiting skin irritation |
US4137301A (en) * | 1972-12-27 | 1979-01-30 | Cincinnati Milacron, Inc. | Method of inhibiting skin irritation |
US4141966A (en) * | 1972-12-27 | 1979-02-27 | Cincinnati Milacron | Method of inhibiting skin irritation |
US4144319A (en) * | 1972-12-27 | 1979-03-13 | Cincinnati Milacron, Inc. | Method of inhibiting skin irritation |
US4110263A (en) * | 1977-06-17 | 1978-08-29 | Johnson & Johnson Baby Products Company | Mild cleansing compositions containing alkyleneoxylated bisquaternary ammonium compounds |
US4256611A (en) * | 1978-09-13 | 1981-03-17 | Sherex Chemical Company, Inc. | Light duty non-irritating detergent compositions |
US4247425A (en) * | 1979-05-07 | 1981-01-27 | Sherex Chemical Company, Inc. | Light duty non-irritating detergent compositions |
DE4228594A1 (en) * | 1992-08-27 | 1994-03-03 | Maeurer & Wirtz Gmbh & Co Kg | Agent for cleaning and conditioning hair, skin, textiles and hard surfaces |
US20090012166A1 (en) * | 2005-07-11 | 2009-01-08 | Hans Uwe Wolf | Oligomers of Straight-Chain and Unbranched Fatty Acids and Drugs Containing These |
US7964640B2 (en) * | 2005-07-11 | 2011-06-21 | Plt Patent & License Trading Ltd. | Oligomers of straight-chain and unbranched fatty acids and drugs containing these |
Also Published As
Publication number | Publication date |
---|---|
DE1717099B2 (en) | 1973-10-04 |
US4075318A (en) | 1978-02-21 |
NL160162B (en) | 1979-05-15 |
NL160162C (en) | 1979-05-15 |
GB1221241A (en) | 1971-02-03 |
US3798182A (en) | 1974-03-19 |
AT295007B (en) | 1971-12-27 |
NL6802006A (en) | 1969-08-15 |
US3630934A (en) | 1971-12-28 |
BE726664A (en) | 1969-06-16 |
US3947382A (en) | 1976-03-30 |
US4067345A (en) | 1978-01-10 |
CH515990A (en) | 1971-11-30 |
FR1602753A (en) | 1971-01-25 |
DE1717099A1 (en) | 1972-04-20 |
US3769242A (en) | 1973-10-30 |
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