Cosmetic compositions containing block copolymers

A - Human Necessities – 61 – K

Patent

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Details

A61K 8/90 (2006.01) A61Q 1/02 (2006.01) A61Q 1/06 (2006.01) A61Q 1/10 (2006.01) A61Q 17/04 (2006.01)

Patent

CA 2362579

The subject-matter of the present invention is a transfer-free composition comprising (a) at least one of a di-block, tri-block, multi-block and/or radial block copolymer and optionally (b) a film former or a mixture of film formers. The composition may comprise any one of a di-block, tri-block, multi- block or radial block copolymer or any mixture or blend of co-polymers. Cosmetic and pharmaceutical compositions of the invention result in a film with very good retention, good transfer resistant properties, and which does not migrate over time. The compositions have cosmetic properties which are improved in relation to those of the "transfer free" products of the prior art.

La présente invention a pour objet une composition sans transfert. Cette composition comprend (a) au moins un élément parmi un copolymère à deux blocs, un copolymère à trois blocs, un copolymère à multiples blocs et/ou un copolymère bloc radial et éventuellement (b) une substance filmogène ou un mélange de substances filmogènes. Cette composition peut comprendre un élément parmi un copolymère à deux blocs, un copolymère à trois blocs, un copolymère à multiples blocs ou un copolymère à blocs radiaux ou des mélanges de copolymères. Les compositions cosmétiques et pharmaceutiques selon l'invention permettent d'obtenir un film présentant de trés bonnes propriétés de rétention, et de résistance au transfert et qui ne migrent pas avec le temps. Les compositions selon l'invention présentent des propriétés cosmétiques améliorées par rapport à celles des produits <= sans transfert >= de l'art antérieur.

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