Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Polymer containing
Patent
1997-07-14
2000-02-15
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Polymer containing
424 7012, 424 7015, 424 7016, 424 47, 424 7011, 424 7017, 424 7803, A61K 706, A61K 711
Patent
active
060249463
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a composition for treatment of keratinous materials, in particular hair, containing a silicone, a latex and a suspension agent for the latex and the silicone and/or a thickening agent, to methods for their use and in particular to a cosmetic treatment using this composition.
Hair is well known to be damaged and weakened by the action of external atmospheric influences such as light and bad weather, also by mechanical or chemical treatment, such as brushing, combing, heat, permanent waving, dyeing and bleaching.
In certain cases, it is go damaged that splits are formed in the hair ends; these split ends are due to longitudinal breaks in the fibre, particularly near the tips. The hair then becomes rough and difficult to comb through.
There is thus a need for compositions for treating keratinous fibres to restructure the damaged fibres as best as possible and render them smooth and easily corked through. There is also a need for this effect to be maintained over a prolonged period and thus avoid too frequent repetition of the treatment which could render the hair dull.
It has been discovered by the applicant that an association of a silicone, a latex and a suspension agent for the latex and the silicone and/or a thickening agent can repair the hair fibre and endow it with softness, ease of combthrough and a smooth, coated feel.
The applicant has also been discovered that the effects of the association of a silicone, a latex and a suspension agent for the latex and the silicone and/or a thickening agent persist when compared with compositions containing only silicone, and improve combthrough, which persists longer, even after one or more, shampoos, compared with compositions containing only silicone or latex.
The specific thickening agents and/or suspension agents defined below result in regular distribution of the silicones and the latex as a homogeneous suspension in the composition. They also enable the composition to be easily applied to keratinous material.
The effects described above have been found to persist even after several shampoos.
The invention consists in a composition for treatment of keratinous material comprising, in an appropriate medium for such application, at least one silicone, at least one latex and at least one suspension agent for the silicone and the latex and/or at least one thickening agent selected from guar gum, gum arabic, scleroglucanes, polyacrylic acids which may or may not be crosslinked, aqueous dispersions of crosslinked ammonium acrylate/acrylamide copolymers and an emulsion of neutralised acrylamide/2-methylpropane sulfonic acrylamide copolymer.
The invention also consists in a treatment method for keratinous material, in particular hair or eyelashes, using a composition as defined below.
Further objects of the invention will become apparent from the following description and examples.
A composition for treatment of keratinous material in accordance with the invention is characterized in that it contains in an aqueous medium at least one silicone, at least one latex which is insoluble in the aqueous medium and a suspension agent for the silicone and the latex and/or at least one thickening agent selected from guar gum, gum arabic, scleroglucanes, polyacrylic acids which may or may not be crosslinked, aqueous dispersions of crosslinked ammonium acrylate/acrylamide copolymers and an emulsion of neutralized acrylamide/2-methylpropane sulfonic acrylamide copolymer.
Silicones for use in the present invention are polyorganosiloxanes which may be insoluble or soluble in aqueous media, and may be in the form of oils, waxes, gums or resins.
Polyorganosiloxanes are described in more detail in "Chemistry and Technology of Silicones" (1968) by Walter NOLL, published by Academic Press.
Polysiloxanes for use in the invention are selected from volatile silicones with a boiling point of between 60.degree. C. and 260.degree. C. or non volatile silicones selected in particular from polyalkylsiloxanes, polyarylsiloxanes, polyalkylarylsiloxanes, silicone gum
REFERENCES:
patent: 4963348 (1990-10-01), Bolich
patent: 5104642 (1992-04-01), Wells
patent: 5120531 (1992-06-01), Wells
Cauwet Daniele
Dubief Claude
"L'Oreal"
Channavajjala Lakshmi
Page Thurman K.
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