Patent ID: 6699339
Filing Date: 2004-03-02
Classification: C04B,Y10T

Abstract:
A gypsum plaster composition with improved adhesion to plastic surfaces and to metal surfaces, comprising from 10 to 90% by weight of gypsum plaster, based on the total weight of solid components in the composition, and optionally other additives, further comprising:a) one or more water-redispersible polymer powders based on one or more vinyl ester monomers, (meth)acrylate monomers, vinylaromatic monomers, olefin monomers, 1,3-diene monomers, and vinyl halide monomers, and optionally other monomers copolymerizable therewith, and b) one or more alkali metal salts and/or alkaline earth metal salts of short-chain fatty acids having from 1 to 4 carbon atoms in the hydrocarbon skeleton and from 1 to 4 carboxy groups, said short chain fatty acids containing no OH groups.