Patent ID: 7425589
Filing Date: 2008-09-16
Classification: C08B,C08L

Abstract:
1. A process for physically modifying a moist cellulose ether, comprising a) intensively mixing the moist cellulose ether having a moisture content of from 30 to 75% at a temperature of from 20 to 100° C., with from 0.1 to 2% by weight, based on dry cellulose ether, of an additive or an additive mixture comprising an aqueous or organic suspension or solution until the additive or additive mixture is uniformly incorporated with the moist cellulose ether to thus form a cellulose ether mixture consisting essentially of the moist cellulose ether and the additive or additive mixture, wherein the additive or additive mixture comprises synthetic polymers of homopolymers or copolymers of vinyl acetate, vinyl acetate-maleate copolymers, ethylene-vinyl acetate copolymers, acrylate and/or methacrylate homopolymers and/or copolymers or polyurethanes, or mixtures thereof, and b) grinding and drying the cellulose ether mixture.