Drug – bio-affecting and body treating compositions – Effervescent or pressurized fluid containing – Organic pressurized fluid
Reexamination Certificate
2000-04-27
2002-11-19
Jones, Dameron L. (Department: 1616)
Drug, bio-affecting and body treating compositions
Effervescent or pressurized fluid containing
Organic pressurized fluid
C424S070110, C424S070150, C424S070160, C424S070220, C424S070210, C514S945000
Reexamination Certificate
active
06482394
ABSTRACT:
FIELD OF THE INVENTION AND DESCRIPTION OF RELATED ART
The present invention relates to pump sprays, pump foams and leave-on hair treatment compositions all of which are free from propellant gas and comprise anionic and cationic polymers. U.S. Pat. No. 4,240,450 discloses mixtures and processes for treating keratin materials with polymers. The mixtures comprise an anionic and a cationic polymer. In many of the known mixtures this results in problems, in that the polymers are precipitated as solids in the mixtures. This necessitates a special application method. The known mixtures are intended in particular for what are known as rinse-off products, i.e. compositions, such as shampoos, which are applied and then washed off again. As compositions which remain on the hair only lotions are mentioned in column 51. Compositions which are free from propellant gas and are sprayed onto the hair are not disclosed. A host of very widely differing compounds are mentioned as possible polymers.
DE 32 17 059 C2 describes pressurized compositions for applying to hair that are in the form of an aerosol foam, with aerosol foam denoting a foam obtained with the aid of a conditioned agent which is under pressure. These compositions necessarily include a propellant. The use of propellants, however, is to be avoided on environmental grounds.
It is an object of the present invention to provide hair treatment compositions which can be applied by spraying even without a propellant gas, which are readily distributed on the hair, and which even under conditions of high atmospheric humidity provide a high level of stability to the hairstyle and at the same time permit good dry combability and elasticity of the hair. The intention is at the same time to ensure that a stable foam can be produced and that the compositions as leave-on products, i.e. as compositions which remain on the hair and are not washed off again after use, impart high flexural strength and little stickiness to the hair.
BRIEF SUMMARY OF THE INVENTION
We have found that this object is achieved in accordance with the invention by hair treatment compositions in the form of pump sprays and pump foams that are free from propellant gas and comprise at least one cationic and at least one anionic polymer.
The hair treatment compositions of the invention in the form of pump sprays and pump foams surprisingly allow access, even without the use of the unwanted propellants, to sprayable compositions which lead to stable and yet light and readily distributed foams that feature good wet and dry combability and hairsetting and which improve the flexural strength of the hair without the occurrence of stickiness.
The hair treatment compositions of the invention can also be in the form of leave-on hair treatment compositions which are free from propellant gas and from polysiloxane and which comprise, dissolved in a solvent, a copolymer with vinylpyrrolidone units and a copolymer with methacrylic acid and ethyl acrylate units.
DETAILED DESCRIPTION OF THE INVENTION
As the polymers it is possible to employ a large number of compounds which are known per se, for example, from DE 32 17 059.
Preference is given to the use of cationic polymers having a molecular weight (M
n
) of from 500-1,000,000 and comprising primary, secondary, tertiary and/or quaternary amine groups. As anionic polymers it is preferred to employ polymers having a molecular weight (M
n
) of from 500 to 1,000,000 which comprise sulfo, carboxyl or phosphoric acid groups.
Use is made in particular of cationic polymers of the following groups, which are mentioned in DE 32 17 059:
1) copolymers of vinylpyrrolidone-dialkylaminoalkyl methacrylate or acrylate which are unmodified or quaternized,
2) derivatives of cellulose ethers comprising quaternary ammonium groups, and quaternary cellulose derivatives,
3) cationic polysaccharides and cationic guar gum derivatives,
4)
cationic polymers selected from the group of polymers comprising groups of the formula —A—Z—A—Z— (I) in which A is a radical having two amino groups, preferably piperazinyl, and Z is B or B′ which are identical or different and are a linear or branched alkylene which is unsubstituted or substituted by hydroxyls and which may also include oxygens, nitrogens, sulfurs and/or from one to three aromatic and/or heterocyclic rings;
polymers of the formula —A—Z
1
—A—Z
1
— (II) in which A is as defined above and Z
1
is B
1
or B′
1
and on at least one occasion is B′
1
, where B
1
is a linear or branched alkylene or hydroxyalkylene, B′
1
is a linear or branched alkylene which is unsubstituted or substituted by one or more hydroxyls and is interrupted by one or more nitrogens, the nitrogen being substituted by an alkyl chain which is uninterrupted or interrupted by an oxygen and which if desired includes one or more hydroxyls;
alkylation products with alkyl or benzyl halides, lower-alkyl-tosylate or -mesylate, and oxidation products of the polymers of the formulae (I) and (II),
5) polyamino-polyamides,
6) crosslinked polyamino-polyamides from the following group
a) crosslinked, alkylated or nonalkylated polyamino-polyamides obtained by crosslinking a polyamino-polyamide prepared by polycondensation of an acidic compound and a polyamine with a crosslinking agent from the group of the epihalohydrins, diepoxides, dianhydrides, unsaturated anhydrides and bis-unsaturated derivatives, the crosslinking agent being used in amounts of from 0.025 to 0.35 mol per amine group of the polyaminoamide;
b) crosslinked polyamino-polyamides obtained by crosslinking a polyamino-polyamide as defined above with a crosslinking agent selected from the following group:
I bis-halohydrins, bis-azetidinium, bis-haloacyldiaminee, alkyl bis-halides,
II oligomers obtained by reacting a compound of group or epihalohydrins, diepoxides and/or bis-unsaturated derivatives with a bifunctional compound that is reactive toward these compounds,
III quaternization products of a compound of group I and of the oligomers of group II which comprise tertiary amine groups some or all of which are alkylatable with an alkylating agent, crosslinking being effected with the aid of from 0.025 to 0.35 mol-% of crosslinking agent per amine group of the polyaminoamide,
c) polyamino-polyamide derivatives obtained by condensing a polyalkylene-polyamine with a polycarboxylic acid and then alkylating the product using bifunctional agents of the type of the adipic acid-dialkylaminohydroxyalkyl-dialkylenetriamine copolymers,
7) polymers obtainable by (i) free-radically initiated copolymerization of monomer mixtures comprising
(a) from 1 to 99.99% by weight, preferably from 2 to 70% by weight and, with particular preference, from 2 to 50% by weight of a cationic monomer or quaternizable monomer,
(b) from 0 to 98.99% by weight, preferably from 22 to 97.98% by weight and, with particular preference, from 45 to 97.95% by weight of a water-soluble monomer,
(c) from 0 to 50% by weight, preferably from 0 to 40% by weight, with particular preference, from 0 to 30% by weight of a further free-radically copolymerizable monomer, and
(d) from 0.01 to 10% by weight, preferably from 0.02 to 8% by weight, and, with particular preference, from 0.05 to 5% by weight of a bifunctional or higher polyfunctional, free-radically copolymerizable monomer,
and (ii) subsequent quaternization of the polymer if the monomer (a) employed was a non-quaternized monomer.
Suitable monomers (a) are the N-vinylimidazole derivatives of the formula (I) where R
1
to R
3
are hydrogen, C
1
-C
4
-alkyl or phenyl
Also suitable are diallylamines of the formula (II) where R
4
is C
1
-C
24
-alkyl.
Also suitable are N,N-dialkylaminoalkyl acrylates and methacrylate, and N,N-dialkylaminoalkylacrylamides and methacrylamides, of the formula (III),
where R
5
and R
6
independently are hydrogen or methyl, R
7
is C
1
-C
24
-alkylene optionally substituted by alkyls and R
8
and R
9
are C
1
-C
24
-alkyl, Z being a nitrogen together with x=1 or an oxygen together with x=0.
The quaternization of the monomer or
Hössel Peter
Schehlmann Volker
BASF - Aktiengesellschaft
Jones Dameron L.
Keil & Weinkauf
LandOfFree
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