Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
1997-09-02
2002-04-23
Moore, Margaret G. (Department: 1712)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S070120, C424S070220
Reexamination Certificate
active
06375958
ABSTRACT:
The invention relates to cosmetic compositions containing at least one anionic surfactant of alkylgalactoside uronate type and one organopolysiloxane and to their uses for treating keratinous substances.
Compositions for washing hair or the skin are generally formulated from anionic or nonionic surfactants or their mixtures, optionally in the presence of amphoteric surfactants.
It has been proposed to add silicones to these washing compositions in order to improve their cosmetic properties but the lathering ability of such compositions and the quality of the lathers are unsatisfactory.
Anionic surfactants of alkylgalactoside uronate type have already been recommended in washing compositions for the hair. They have been described in EP 0,532,370.
Compositions for washing the hair which use only these surfactants do not lead to good cosmetic properties; in particular, disentangling of wet hair is difficult and the qualities of the lathers are unsatisfactory.
The Applicant Company has just surprisingly discovered that the combination, in washing and/or treating compositions for keratinous substances, of an anionic surfactant of alkylgalactoside uronate type and of an organopolysiloxane defined below conferred greatly improved disentangling properties for wet hair on these compositions.
Moreover, the combination in accordance with the present invention makes it possible to obtain a copious, compact and very soft lather.
In addition, the Applicant Company has observed that the cosmetic compositions containing such a combination conferred good cosmetic properties, such as softness or a pleasant feel, and that they were very well tolerated by the skin.
The subject of the present invention is therefore cosmetic compositions containing at least one alkylgalactoside uronate and one organopolysiloxane defined below.
Another subject of the invention consists of the use of these compositions for treating and/or washing keratinous substances such as the hair or the skin.
Finally, another subject of the invention consists of a cosmetic treatment process for the hair or for the skin by means of the compositions of the invention; washing and treatment processes for the hair being preferred.
The cosmetic compositions according to the invention contain, in a cosmetically acceptable aqueous medium:
(A) at least one anionic surfactant of alkylgalactoside uronate type of formula:
in which:
R
1
denotes a linear or branched alkyl radical containing 8 to 22 carbon atoms,
R denotes a group
in which the carbon carrying the hydroxyl group is connected to the endocyclic oxygen atom; R
2
being hydrogen, an alkali-metal, an alkaline-earth metal or a quaternary ammonium group which is unsubstituted or substituted by alkyl or hydroxyalkyl radicals or derived from amino acids,
(B) at least one organopolysiloxane chosen from:
(i)—organopolysiloxane oils with the exception of linear polydimethylsiloxanes with a viscosity of less than 10
−1
m
2
/s,
(ii)—organopolysiloxane gums,
(iii)—organopolysiloxane resins,
(iv)—organomodified polysiloxanes,
(v)—mixtures of linear polydimethylsiloxanes with a viscosity of less than 10
−1
m
2
/s with one or a number of compound(s) defined under (i), (ii), (iii) and (iv).
Anionic surfactants of alkylgalactoside uronate type of formula (I) are known and can be prepared according to the processes described in Patent Application EP-A-0,532,370.
The alkali metal is in particular sodium or potassium and the alkaline-earth metal is preferably magnesium. Mention may be made, as quaternary ammonium salts, of the salts of ammonia, of triethanolamine, of monoethanolamine, of 2-amino-2-methyl-1,3-propanediol or of 2-amino-2-methyl-1-propanol; the amino acid is in particular: histidine, arginine or lysine.
Use is preferably made of the compounds of formula (I) in which the R
1
radical denotes a C
8
-C
14
alkyl and more particularly the decyl radical.
Use is in particular made of the following compounds:
Sodium decyl &agr;-D-galactopyranoside uronate:
Sodium decyl &bgr;-D-galactopyranoside uronate:
Sodium decyl &agr;-D-galactofuranoside uronate:
Sodium decyl &bgr;-D-galactofuranoside uronate:
The organopolysiloxanes used in the compositions according to the present invention are organopolysiloxane oils or organosiloxane gums or resins, as such or in the form of solutions in organic solvents or alternatively in the form of emulsions or of microemulsions.
Among the organosiloxanes used in accordance with the present invention, there may be mentioned, in a non-limiting way:
I. Volatile Silicones
These have a boiling point between 60° C. and 260° C. They are chosen from cyclic silicones containing 3 to 7 silicon atoms and preferably 4 to 5. They are, for example, octamethylcyclotetrasiloxane sold under the name of “Volatile Silicone 7207” by Union Carbide or “Silbione 70045 V2” by Rhône-Poulenc or decamethylcyclopentasiloxane sold under the name of “Volatile Silicone 7158” by Union Carbide, or “Silbione 70045 V5” by Rhône-Poulenc, as well as their mixtures.
There are also mentioned cyclocopolymers of the dimethylsiloxane/methylalkylsiloxane type, such as “Silicone Volatile FZ 3109” sold by the company Union Carbide, which is a dimethylsiloxane/methyloctylsiloxane cyclocopolymer;
II. Nonvolatile Silicones
They consist mainly of polyalkylseiloxanes, polyarylsiloxanes, polyalkylarylsiloxanes, silicone gums and resins and organomodified polysiloxanes, as well as their mixtures.
Among polyalkylsiloxanes, there may mainly be mentioned linear polydimethylsiloxanes with a viscosity greater than 10
−1
m
2
/s: either,
containing trimethylsilyl end groups, such as, for example and in a nonlimiting way, Silbione oils of the 70047 series marketed by Rhône-Poulenc; 47 V 500 000 oil of Rhône-Poulenc or certain Viscasils of General Electric, or
containing hydroxydimethylsilyl end groups, such as oils of the 48 V series of Rhône-Poulenc.
In this polyalkylsiloxane class, there may also be mentioned polyalkylsiloxanes sold by the Company Goldschmidt under the names Abilwax 9800 and Abilwax 9801, which are poly(C
1
-C
20
)alkylsiloxanes.
Among polyalkylarylsiloxanes, there may be mentioned linear and/or branched polymethylphenylsiloxanes, polydimethylmethylphenylsiloxanes or polydimethyldiphenylsiloxanes such as, for example:
Rhodorsil 763 oil of Rhône-Poulenc,
Silbione 70641 V 30 and 70641 V 200 oils of Rhône-Poulenc,
the product DC 556 Cosmetic Grad Fluid of Dow Corning,
silicones of the PK series of Bayer, such as PK20,
silicones of the PN or PH series of Bayer, such as PN 1000 and PH 1000,
certain oils of the SF series of General Electric, such as SF 1250, SF 1265, SF 1154 or SF 1023.
Silicone gums, in accordance with the present invention, are polydiorganosiloxanes with a high molecular mass of between 200,000 and 1,000,000, used alone or as a mixture in a solvent chosen from volatile silicones, polydimethylsiloxane oils (PDMS), polyphenylmethylsiloxane oils (PPMS), isoparaffins, methylene chloride, pentane, dodecane, tridecane, tetradecane or their mixtures.
There are mentioned, for example, the following compounds:
polydimethylsiloxane,
poly[(dimethylsiloxane)/(methylvinylsiloxane)],
poly[(dimethylsiloxane)/(diphenylsiloxane)],
poly[(dimethylsiloxane)/(phenylmethylsiloxane)],
poly[(dimethylsiloxane)/(diphenylsiloxane)/(methylvinylsiloxane)].
There may be mentioned, for example, in a non-limiting way, the following mixtures:
1) mixtures formed from a polydimethylsiloxane hydroxylated at the chain ends (Dimethiconol according to the CTFA nomenclature), and from a cyclic polydimethylsiloxane (Cyclomethicone according to the CTFA nomenclature), such as the product Q2 1401 sold by the Company Dow Corning;
2) mixtures formed from a polydimethylsiloxane gum with a cyclic silicone, such as the product SF 1214 Silicone Fluid of General Electric, which is an SE 30 gum with an MW of 500,000 solubilized in SF 1202 Silicone Fluid (decamethylcyclopentasiloxane);
3) mixtures of two PDMSs having a different viscosity, especially of a PDMS gum and
Cauwet Daniele
Dubief Claude
Jacobson & Holman PLLC
L'Oreal
LandOfFree
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