Patent ID: 6395265
Filing Date: 2002-05-28
Classification: A61K,A61Q,C08G

Abstract:
A composition comprising at least one solution or at least one organic solvent-in-water emulsion, wherein said at least one solution or at least one organic solvent-in-water emulsion comprises at least one multiblock polycondensate dissolved in an aqueous solvent, an organic solvent, or a mixture thereof, the chain of said at least one multiblock polycondensate comprising the repetition of at least one polysiloxane block and at least one second block, wherein said at least one second block is chosen from polyurethane and polyurea blocks, wherein said at least one second block comprises at least one ionizable group, wherein said at least one second block is chosen from at least one polyurethane and/or polyurea block of formula (II) below: whereinX2, which may be identical or different, is â€”Oâ€” or â€”NHâ€”, R is a divalent radical wherein said divalent radical is an aromatic, aliphatic or cycloaliphatic radical, x is an interger ranging from 1 to 10, and B is chosen from radicals of formula (III): â€ƒwherein R2 is a linear or branched C1-C3 alkyl radical, Z is a â€”COOH or â€”SO3H function or a salt of these acidic functions, and p and q, which may be identical or different, are integers ranging from 1 to 5, or formula (IIIâ€²): â€ƒwherein Z is a â€”COOH or â€”SO3H function or a salt of these acidic functions, and further wherein the composition is a cosmetic or dermatological composition, and wherein the numerical ratio between said at least one polyurethane and/or polyurea block and said at least one polysiloxane block in the polycondensate ranges from 1:1 to 10:1.