Patent ID: 6369153
Filing Date: 2002-04-09
Classification: C04B,C08J

Abstract:
A pulverulent composition obtained by mixing and then drying an emulsion, comprising:an emulsion of at least one water-insoluble film-forming polymer prepared from ethylenically unsaturated monomers, at least one main surfactant whose water/surfactant binary phase diagram contains an isotropic phase which is fluid at 25Â° C. up to a concentration of at least 50% by weight of surfactant, followed by a hexagonal or cubic type rigid liquid crystal phase at higher concentrations which is stable at least up to the drying temperature, and at least one water-soluble compound, wherein the main surfactant is an amphoteric surfactant of the following general formula: wherein R represents an alkyl or alkenyl radical comprising 7 to 22 carbon atoms, R1 represents a hydrogen atom or an alkyl radical comprising 1 to 6 carbon atoms, A represents a (CO) or (OCH2CH2) group, n equals 0 or 1, x equals 2 or 3, y equals 0 to 4, Q represents a radical â€”R2â€”COO M with R2 representing an alkyl radical comprising 1 to 6 carbon atoms, M represents H, Na, K or NH4 and B represents H or Q.