Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Reexamination Certificate
2001-09-19
2004-02-17
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
C424S070100, C424S401000, C424S070190, C424S070210, C424S070220
Reexamination Certificate
active
06692730
ABSTRACT:
The present invention relates to a composition for washing keratinous materials, in particular hair, comprising particles essentially consisting of aluminium oxide, at least conditioning agent and at least one detergent surfactant, to a method for the cosmetic treatment of keratinous fibres and to a use of the composition as a shampoo.
U.S. Pat. No. 3,819,827 by WELLA describes, in particular, products for hair setting comprising from 0.2 to 6% by weight of particles of aluminium oxide having a particle size of about 30 m&mgr;, and from 1 to 4% by weight of polymers such as gum tragacanth, agar, pectin, vinyl polymers and basic polymers.
The applicant has found, surprisingly, that the use of particles essentially consisting of aluminium oxide and having a mean primary size in numerical terms of less than 200 nm, with a particular conditioning agent and at least one detergent surfactant in washing compositions, made it possible to obtain good form retention and a certain volume of the hair, that is to say a hair styling effect. It is observed, moreover, that the keratinous fibres have become firm and strong.
The subject of the present invention is therefore a composition for washing keratinous materials, in particular hair, comprising, in a cosmetically acceptable aqueous medium, particles essentially consisting of aluminium oxide and having a mean primary size in numerical terms of less than 200 nm, at least one particular conditioning agent and at least one detergent surfactant.
Another subject of the invention consists in a method for the cosmetic treatment of keratinous fibres using the composition according to the invention.
The subject of the invention is also a use of the composition according to the invention as a shampoo.
Other subjects, characteristics, aspects and advantages of the invention will appear more clearly on reading the description and the various examples which follow.
According to the invention, the composition for washing keratinous materials, in particular hair, comprises, in a cosmetically acceptable aqueous medium, particles essentially consisting of aluminium oxide and having a mean primary size in numerical terms of less than 200 nm, at least one conditioning agent chosen from cationic surfactants, cationic polymers, silicones, vegetable oils, ceramides, anionic polymers, amphoteric polymers and mixtures thereof, and at least one detergent surfactant, these compositions not simultaneously containing an anionic surfactant and an amphoteric or nonionic surfactant.
The expression “cosmetically acceptable aqueous medium” is understood to mean a medium compatible with keratinous materials such as the skin and the hair.
The expression “particles essentially consisting of aluminium oxide” is understood to mean particles consisting of more than 90% by weight of aluminium oxide.
For the purposes of the present invention, the expression “primary size of a particle” is understood to mean the maximum size which it is possible to measure between two diametrically opposite points of an individual particle. The size may be determined by transmission electron microscopy or from the measurement of the specific surface area by the BET method.
The mean primary size in numerical terms of the particles is preferably between 5 and 50 nm, and more preferably still between 5 and 25 nm.
The particles of aluminium oxide according to the invention essentially consist of any optionally hydrated aluminium oxide such as, for example, boehmite.
The particles may have any shape different from plates, for example a shape of a sphere, flakes, needles or plates, and preferably they are substantially spherical.
The particles of aluminium oxide may be used in the composition according to the invention in a quantity ranging from 0.01 to 20% by weight, preferably from 0.1 to 5% by weight, relative to the total weight of the washing composition of the invention.
The detergent surfactants which can be used in the present invention are in particular chosen from anionic, amphoteric and nonionic surfactants, provided that an anionic surfactant and an amphoteric or nonionic surfactant are not simultaneously used.
As anionic surfactants which can be used in the present invention, there may be mentioned especially salts, in particular alkali metal salts such as sodium salts, ammonium salts, amine salts, amino alcohol salts or salts of alkaline earth metals, for example magnesium, of the following types: alkyl sulphates, alkyl ether sulphates, alkyl amidoether sulphates, alkyl aryl polyether sulphates, monoglyceride sulphates; alkyl sulphonates, alkyl amide sulphonates, alkyl aryl sulphonates, &agr;-olefin sulphonates, paraffin sulphonates; alkyl sulphosuccinates, alkyl ether sulphosuccinates, alkyl amide sulphosuccinates; alkyl sulphoacetates; acyl sarcosinates; and acyl glutamates, the alkyl and acyl groups of all these compounds comprising from 6 to 24 carbon atoms and the aryl group preferably denoting a phenyl or benzyl group. It is also possible to use the esters of a C
6
-C
24
alkyl and polyglycoside carboxylic acids such as alkyl glucoside citrates, alkyl polyglycoside tartrates and alkyl polyglycoside sulphosuccinates; alkyl sulphosuccinamates, acyl isethionates and N-acyltaurates, the alkyl or acyl group of all these compounds comprising from 12 to 20 carbon atoms. Among the anionic surfactants which can also be used, there may also be mentioned acyl lactylates in which the acyl group comprises from 8 to 20 carbon atoms.
In addition, there may also be mentioned alkyl D-galactoside uronic acids and their salts as well as polyoxyalkylenated (C
6-
C
24
)alkyl ether carboxylic acids, polyoxyalkylenated (C
6
-C
24
) alkyl (C
6
-C
24
) aryl ether carboxylic acids, polyoxyalkylenated (C
6
-C
24
)alkyl amidoether carboxylic acids and their salts, in particular those comprising from 2 to 50 ethylene oxide groups, and mixtures thereof.
The anionic surfactants as described above may be used alone or as a mixture. Alkyl sulphates, alkyl ether sulphates and alkyl ether carboxylates and mixtures thereof, in particular in the form of their alkali or alkaline earth metal, ammonium, amine or amino alcohol salts, are preferably used.
The amphoteric surfactants which are suitable in the present invention may be in particular secondary or tertiary aliphatic amine derivatives in which the aliphatic group is a linear or branched chain comprising from 8 to 22 carbon atoms and containing at least one water-solubilizing anionic group such as, for example, a carboxylate, sulphonate, sulphate, phosphate or phosphonate group; there may also be mentioned (C
8
-C
20
)alkylbetaines, sulphobetaines, (C
8
-C
20
) alkylamido (C
6
-C
8
) alkylbetaines or (C
8
-C
20
) alkylamido(C
6
-C
8
)alkylsulphobetaines, and mixtures thereof.
Among the amine derivatives, there may be mentioned the products marketed under the name MIRANOL®, as described in U.S. Pat. Nos. 2,528,378 and 2,781,354 and classified in the CTFA dictionary, 3rd edition, 1982, under the names Amphocarboxyglycinate and Amphocarboxypropionate having the respective structures (1) and (2):
R
a
—CONHCH
2
CH
2
—N(R
b
)(R
c
)(CH
2
COO
−)
(1)
in which:
R
a
represents an alkyl group derived from an acid R
a
—COOH present in hydrolysed copra oil, a heptyl, nonyl or undecyl group,
R
b
represents a beta-hydroxyethyl group, and
R
c
represents a carboxymethyl group; and
R
a′
—CONHCH
2
CH
2
—N(B)(C) (2)
in which:
B represents —CH
2
CH
2
OX′,
C represents —(CH
2
)
z
—Y′, with z=1 or 2,
X′ represents a group —CH
2
CH
2
—COOH or a hydrogen atom,
Y′ represents —COOH or a group —CH
2
—CHOH—SO
3
H,
R
a′
represents an alkyl group of an acid R
a′
—COOH present in copra oil or in hydrolysed linseed oil, an alkyl group, in particular a C
17
and its iso form, an unsaturated C
17
group.
These compounds are classified in the CTFA dictionary, 5th edition, 1993, under the names disodium cocoamphodiacetate, disodium lauroamphodiacetate, disodium caprylamphodiacetate, disodium capryloamphodiacetate, diso
Giroud Franck
Perron Béatrice
Restle Serge
Samain Henri
Howard S.
L'Oreal
Page Thurman K.
Price D. Douglas
Steptoe & Johnson LLP
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