Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Reexamination Certificate
2000-06-23
2002-08-13
Hardee, John (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
C510S119000, C510S130000
Reexamination Certificate
active
06432908
ABSTRACT:
The present invention relates to cosmetic compositions with improved properties which are intended simultaneously for cleansing and conditioning, and which comprise, in a cosmetically acceptable support, a washing base comprising surfactants with detergent power in which are also present carboxylic acid esters in combination with at least one amphoteric polymer comprising at least one monomeric unit chosen from (meth)acrylate and (meth)acrylamide types containing at least one fatty chain, the fatty chain containing from 8 to 30 carbon atoms.
The invention also relates to the use of the compositions in the above-mentioned cosmetic application.
It is common practice to use detergent hair compositions (or shampoos) based essentially on conventional surfactants of anionic, nonionic and/or amphoteric type in particular, but more particularly of anionic type, to cleanse and/or wash the hair. These compositions are applied on wet hair and the lather generated by massaging or rubbing with the hands allows, after rinsing with water, the removal of the various types of soiling initially present on the hair.
Admittedly, these base compositions have good washing power, but the intrinsic cosmetic properties associated with them nevertheless may remain very poor, in particular due to the fact that the relatively aggressive nature of such a cleansing treatment can result in the long run in more or less pronounced damage to the hair fiber which is associated in particular with the gradual removal of the lipids or proteins contained in or at the surface of the fiber.
Thus, to improve the cosmetic properties of the above detergent compositions, and more particularly of those which are known to be applied to sensitized hair (i.e., hair which has been damaged or embrittled, in particular under the chemical action of atmospheric agents and/or hair treatments such as permanent-waving, dyeing or bleaching operations), it is now common practice to introduce into these compositions additional cosmetic agents known as conditioners which are intended mainly to repair or limit the harmful or undesirable effects induced by the various treatments or aggressions which the hair fibers undergo or are exposed to more or less repeatedly. These conditioners can, of course, also improve the cosmetic behavior of natural hair.
The conditioners most commonly used to date in shampoos are silicones, which in fact can give washed, dry or wet hair markedly better ease of disentangling, softness and smoothness than that which can be obtained with the corresponding cleansing compositions from which they are absent.
However, and despite the progress recently made in the field of shampoos, these conditioners do not truly give complete satisfaction, such that there is currently still a strong need for products which have further improved performance qualities as regards one or more of the cosmetic properties mentioned above.
The present invention is directed towards satisfying such a need.
Thus, after considerable research conducted in this matter, the inventors have now found, entirely surprisingly and unexpectedly, that by introducing at least one amphoteric polymer comprising at least one monomeric unit chosen from (meth)acrylate and (meth)acrylamide types containing at least one fatty chain, the fatty chain containing from 8 to 30 carbon atoms, into detergent compositions, in particular hair compositions, containing carboxylic acid esters, it is possible to substantially and significantly improve the cosmetic properties associated with these compositions, while at the same time conserving their good intrinsic washing power.
Without wishing to limit the present invention to any theory, there would appear to be specific interactions and/or affinities between the carboxylic acid esters, the amphoteric polymers in accordance with the invention and the hair during rinsing, which promote a uniform, sizeable and long-lasting deposition of the carboxylic acid esters and amphoteric polymers at the surface of the hair. This qualitative and quantitative deposition probably is one of the causes of the improvement that can be observed in the final properties, such as the ease of styling, the hold, the liveliness or the body of the treated hair.
All these discoveries form the basis of the present invention.
Thus, according to the present invention, detergent compositions, in particular hair compositions, are now proposed, comprising, in a cosmetically acceptable medium, a washing base, at least one water-insoluble carboxylic acid ester and at least one amphoteric polymer comprising at least one monomeric unit chosen from (meth)acrylate and (meth)acrylamide types containing at least one fatty chain, the fatty chain containing from 8 to 30 carbon atoms.
A subject of the invention is also the cosmetic use of the above compositions for cleansing, conditioning and styling the hair.
However, other characteristics, aspects and advantages of the invention will emerge even more clearly on reading the description which follows as well as the concrete, but in no way limiting, examples intended to illustrate it.
A—Washing Base
The compositions in accordance with the invention comprise a washing base, which is generally aqueous.
The surfactant(s) forming the washing base can be chosen, alone or as mixtures, from any and all anionic, amphoteric, nonionic, zwitterionic or cationic surfactants. However, according to the invention, the washing base preferably comprises anionic surfactants or mixtures of anionic surfactants and amphoteric surfactants or nonionic surfactants.
The minimum amount of washing base is that which is just sufficient to give the final composition a satisfactory foaming and/or detergent power, and excessive amounts of washing base do not really provide any additional advantages.
Thus, according to the invention, the washing base can preferably represent from 4% to 50% by weight, more preferably from 6% to 25% by weight and even more preferably from 8% to 20% by weight, relative to the total weight of the final composition.
The surfactants which are suitable for carrying out the present invention are, in particular, the following:
(i) Anionic Surfactant(s)
As examples of anionic surfactants which can be used, alone or mixed, in the context of the present invention, mention may be made in particular (non-limiting list) of salts (in particular alkaline salts, especially sodium salts, ammonium salts, amine salts, amino alcohol salts or magnesium salts) of the following compounds: alkyl sulphates, alkyl ether sulphates, alkylamidoether sulphates, alkylarylpolyether sulphates, monoglyceride sulphates; alkylsulphonates, alkyl phosphates, alkylamide sulphonates, alkylaryl sulphonates, &agr;-olefin sulphonates, paraffin sulphonates; (C
6
-C
24
)alkyl sulphosuccinates; (C
6
-C
24
)alkyl ether sulphosuccinates; (C
6
-C
24
)alkylamide sulphosuccinates; (C
6
-C
24
)alkyl sulphoacetates; (C
6
-C
24
)acylsarcosinates; and (C
6
-C
24
)acyl glutamates. Use may also be made of the carboxylic esters of (C
6
-C
24
)-alkyl polyglycosides such as alkyl glucoside citrates, alkyl polyglycoside tartrates and alkyl polyglycoside sulphosuccinates; alkyl sulphosuccinamates; acylisethionates and N-acyltaurates. The alkyl or acyl radical of all these various compounds preferably containing from 12 to 20 carbon atoms, and the aryl radical preferably denoting a phenyl or benzyl group. Among the anionic surfactants which can also be used, mention may also be made of fatty acid salts such as the salts of oleic, ricinoleic, palmitic acid, stearic acid, coconut oil acid or hydrogenated coconut oil acid; acyl lactylates in which the acyl radical contains 8 to 20 carbon atoms. Use may also be made of alkyl D-galactosiduronic acids and their salts, polyoxyalkylenated (C
6
-C
24
) alkyl ether carboxylic acids, polyoxyalkylenated (C
6
-C
24
) alkylaryl ether carboxylic acids, polyoxyalkylenated (C
6
-C
24
) alkylamido ether carboxylic acids and their salts, in particular those comprising from 2 to 50 alkylene oxide groups, particularly ethylene oxide groups, and mixtu
Dubief Claude
Restle Serge
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Hardee John
L'Oreal
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