Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Anionic surfactant containing
Reexamination Certificate
2000-02-15
2002-04-09
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Anionic surfactant containing
C424S070100, C424S070110, C424S070120, C424S070121, C424S070122, C424S070190, C424S070210, C424S070270, C424S070310, C510S119000
Reexamination Certificate
active
06368584
ABSTRACT:
The present invention relates to novel cosmetic compositions comprising, in a cosmetically acceptable medium, at least one hydroxyalkyl ether carboxylic anionic surfactant and at least on silicone.
Detergent compositions (shampoo or shower gel) based essentially on conventional surface-active agent of, in particular, anionic, non-ionic and/or amphoteric type, but more particularly of anionic type, are commonly used for cleaning and/or washing the hair and/or the skin. These compositions are applied to wet hair or skin and the foam generated by massaging or rubbing with the hands makes it possible, after rinsing with water, to remove the various types of dirt initially present on the hair or skin.
These base compositions certainly have a good washing power but the intrinsic cosmetic properties which are attached to them remain fairly weak, however, because the relatively aggressive nature of such a cleaning treatment can, in the long term, result in more or less marked damage to keratinous substances, related to the gradual removal of the lipids or proteins present in or at the surface of the keratinous su stances.
Consequently, in order to improve the cosmetic properties of the above detergent compositions and more particularly of those which are intended to be applied to sensitized hair (i.e. hair which is found to be damaged or embrittled, in particular under the chemical action of atmospheric agents and/or of hair treatments, such as permings, dyeings or bleachings), it is now usual to introduce into the latter additional cosmetic agents, known as conditioning agents, intended mainly to repair or limit the harmful or undesirable effects brought about by the various treatments or attacks to which the hair fibres are more or less repeatedly subjected. These conditioning agents can, of course, also improve the cosmetic behaviour of natural hair.
Currently, the most widely used conditioning agents in shampoos are cationic polymers, silicones and/or silicone derivatives, this being because these confer, on dry or wet washed hair, an ease of disentangling, a softness and a sleekness which are increased with respect to the which can be obtained with the corresponding cleaning compositions which are devoid thereof.
However, and in spite of the progress achieved recently in the field of shampoos based on cationic polymers and/or on silicone, the latter are not really completely satisfactory, so that strong need still currently exists with regard to being able to have available novel products exhibiting a better performance with regard to one or more of the cosmetic properties mentioned above.
Anionic surfactants of hydroxyalkyl ether carboxylic type have already been recommended in detergent cosmetic compositions. They have been disclosed, for example, in Patent Applications J63280798, J08268487 and J08269482, all of which are incorporated herein by reference.
Hair washing composition using these surfactants alone do not result in satisfactory cosmetic properties.
The aim of the invention is therefore to provide detergent cosmetic compositions exhibiting improved cosmetic properties, in particular hair disentangling, sleekness and softness. In point of fact, it has now for the first time been found that the combination of specific silicones and of a hydroxyalkyl ether carboxylic anionic surfactant makes it possible to achieve these aims.
These novel compositions make it possible to achieve better deposition of these silicones on keratinous substances (in particular the hair) than a composition comprising conventional anionic surfactants, such as alkyl ether carboxylate salts, this being without a visual appearance or greasy feel.
The compositions according to the invention confer on keratinous substances, in particular the hair, a notable treating effect which is revealed in particular by an ease of disentangling and a contribution of volume, of lightness, of sleekness, of softness and of suppleness and of manageability without any sensation of a feeling of heaviness.
One subject of the invention is thus a detergent cosmetic composition, characterized in that it comprise, in a cosmetically acceptable medium, at least one anionic surfactant chosen from 2-hydroxyalkyl ether carboxylic acid or salts thereof and at least one silicone polymer chosen from:
(i) volatile or non-volatile, linear, branched or cyclic and crosslinked or non-crosslinked polyalkylsiloxanes, polyarylsiloxanes or polyalkylaryisiloxanes,
(ii) polysiloxanes comprising, in their general structure, one or more organofunctional groups chosen from:
a) substituted or unsubstituted aminated groups
b) (per)fluorinated groups
c) thiol groups
d) carboxylate groups
e) hydroxylated groups
f) alkoxylated groups
g) acyloxyalkyl groups
h) amphoteric groups
i) bisulphite groups
j) hydroxyacylamino groups
k) carboxylic acid groups
l) sulphonic groups
m) sulphate or thiosulphate groups;
(iii) linear polysiloxane(A)-polyoxyalkylene(B) block copolymers of (A—B)
n
type with n>3;
(iv) grafted silicone polymers with a non-silicone organic backbone, which polymers are composed of a main organic chain formed from organic monomers not comprising silicone, on which chain is grafted, inside the said chain and optionally at one at least of its ends, at least one polysiloxane macromonomer; and
(v) grafted silicone polymers with a polysiloxane backbone which is grafted with non-silicone organic monomers, comprising a main polysiloxane chain on which is grafted, inside the said chain and optionally at one at least of its ends, at least one organic macromonomer not comprising silicone.
Another object of the invention relates to a process for the treatment of keratinous substances, such as hair, comprising applying to the said substances, cosmetic compositions according to the invention.
A further object of the invention is the use of a composition according to the invention in disentangling or sleeking the hair or in contributing volume, lightness, softness, suppleness and manageability to the hair.
A further object of the invention is the use of surfactants chosen from 2-hydroxyalkyl ether carboxylic acid or salts thereof in or for the manufacture of detergent cosmetic compositions comprising at least one silicone polymer defined above.
According to the present invention, the term “keratinous substances” comprises the hair, eyelashes, eyebrows, skin, nails, mucous membranes or scalp and more particularly the hair.
The various objects of the invention will now be given in detail. All the meanings and definitions of the compounds used in the present invention given hereinbelow are valid for all the subject-matters of the invention.
The anionic surfactants chosen from 2-hydroxyalkyl ether carboxylic acid and salts thereof can have the following structure:
in which:
R
1
denotes more particularly a saturated or unsaturated, linear or branched alkyl radical comprising from 8 to 30 carbon atoms, and
X denotes hydrogen or are inorganic or organic cation, such as: those resulting from an alkali metal (for example, Na
+
or K
+
), NH
4
+
, ammoniums resulting from basic amino acid, such as lysine, arginine, sarcosine, ornithine or citrulline, or ammoniums resulting from aminoalcohols, such as monoethanolamine, diethanolamine, triethanolamine, glucamine, N-methylglucamine or 3-amino-1,2-propanediol.
Preferred 2-hydroxyalkyl ether carboxylic acids or salts thereof according to the present invention are compounds of formula (I) in which R
1
denotes more particularly a saturated or unsaturated, linear or branched alkyl radical comprising from 8 to 18 carbon atoms. More preferably, R
1
denotes a C
8
-C
18
radical derived from coconut oil or a mixture of such radicals.
Mention may be made, among the surfactants of formula (I), of the product sold under the name Beaulight Shaa by the company Sanyo.
According to the invention, the anionic surfactant chosen from 2-hydroxyalkyl ether carboxylic acid and salts thereof can represent from 1% to 30% by weight, preferably from 3% to 15% by weight, with respect to the total weight of the final comp
Cauwet-Martin Daniele
Garnier Nathalie
Restle Serge
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
L'Oreal (S.A.)
Page Thurman K.
Seidleck Brian K.
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