Use in cosmetics or in topical application of an aqueous dispers

Details Use in cosmetics or in topical application of an aqueous dispers Use in cosmetics or in topical application of an aqueous dispers

1993-05-17

1995-11-28

Kulkosky, Peter F.

Drug, bio-affecting and body treating compositions

Live hair or scalp treating compositions

Polymer containing

424 7803, 424 7835, 424 59, 424 70122, A61K 3178, A61K 31785, A61K 7075

Patent

active

054705517

DESCRIPTION:

BRIEF SUMMARY
The invention relates to the use in cosmetics or in topical application of an aqueous dispersion based on organopolysiloxanes and on a crosslinked acrylamide
eutralized 2-acrylamido-2-methylpropanesulfonic acid copolymer.
Silicone oils are already used in cosmetics as lubricating agents in hair and skin treatment compositions. They are mainly polydimethylsiloxanes.
In order to introduce softness to the hair or the skin, or also to facilitate disentangling of hair, cationic polymers or surface-active agents have been used for a long time. Cationic compounds have the disadvantage, after repeated applications, of making the hair lank by giving it a greasy appearance or of producing a sticky effect on the skin.
The Applicant has discovered, surprisingly, that the use of an aqueous dispersion based on organopolysiloxanes and on a crosslinked acrylamide
eutralized 2-acrylamido-2-methylpropanesulphonic acid copolymer for hair treatment makes it possible to obtain shiny, silky and lively hair whose disentangling and softness properties are substantially improved.
The use of this aqueous dispersion in skin treatment also makes it possible to confer on the skin a soft feel without a sticky effect.
The aqueous dispersions used in cosmetics or in topical application, according to the present invention, spread much more easily on the skin and the hair than the compositions of the prior art based on cationic compounds.
The Applicant has also discovered that the cosmetic compositions in the form of an aqueous dispersion, according to the present invention, were remarkably stable and that their cosmetic qualities were retained even after several successive applications and more particularly in non-rinsed application on hair.
The subject of the invention thus consists of the use in cosmetic hair or skin treatment or in topical application of an aqueous dispersion containing at least one organopolysiloxane and of one crosslinked acrylamide
eutralized 2-acrylamido-2-methylpropane-sulfonic acid copolymer.
Another subject of the invention relates to cosmetic or dermatological compositions for hair or skin treatment in the form of aqueous dispersions.
Another subject of the invention relates to processes for cosmetic hair or skin treatment using these compositions, depending upon the desired application.
Other subjects of the invention will become apparent in the light of the description and the examples which follow.
The main subject of the present invention is the use, for cosmetic hair or skin treatment, or in topical application, of an aqueous dispersion, characterized in that the latter contains, in a cosmetically or physiologically acceptable aqueous medium, at least one organopolysiloxane and one crosslinked acrylamide
eutralized 2-acrylamido-2-methylpropanesulfonic acid copolymer, with the proviso that the organopolysiloxane is not chosen from linear polydimethylsiloxanes with a viscosity of less than 10.sup.-1 m.sup.2 /s.
The organopolysiloxanes used in the dispersions according to the present invention are organopolysiloxane oils or organic solutions containing organosiloxane gum or resin.
Among the organosiloxanes used in accordance with the present invention, there may be mentioned, in a nonlimiting way:
These have a boiling point between 60.degree. C. and 260.degree. C. Among this type of silicone, there are mentioned: They are, for example, octamethylcyclotetrasiloxane sold under the name of Volatile Silicone 7207 by Union Carbide or Silbione 70045 V2 by Rhone-Poulenc or decamethylcyclopentasiloxane sold under the name of Volatile Silicone 7158 by Union Carbide, or Silbione 70045 V5 by Rhone-Poulenc, as well as their mixtures.
There are also mentioned cyclocopolymers of dimethylsiloxane/methylalkylsiloxane type, such as Silicone Volatile FZ 3109 sold by the Company Union Carbide, which is a dimethylsiloxane/methyloctylsiloxane cyclocopolymer; viscosity less than or equal to 5.10.sup.-6 m.sup.2 /s at 25.degree. C. They are, for example, hexamethyldisiloxane sold under the name Silbione 70 041 V 0.65 by the Comp

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