Patent ID: 9199881
Filing Date: 2015-12-01
Classification: C04B,C08F,C08J,C08L

Abstract:
1. A water redispersible polymer powder (RDP) composition comprising an admixture of a water insoluble film-forming polymer which is carboxylated and from 2% by weight to 20% by weight, based upon the weight of the water insoluble film-forming polymer of a colloidal stabilizer, said film forming polymer comprising a carboxylated styrene-butadiene copolymer, and said colloidal stabilizer comprising a combination of a polyvinyl alcohol having an alkyl end chain of from 6 carbon atoms to 20 carbon atoms (alkyl modified polyvinyl alcohol) and an unmodified polyvinyl alcohol wherein the amount of the alkyl modified polyvinyl alcohol is from 5% by weight to 70% by weight based on the weight of the colloidal stabilizer, optionally, the water redispersible polymer powder composition further comprising cement ingredients in a dry mix formulation of the water redispersible polymer powder in an amount of at least 0.1% by weight, based upon the weight of the dry mix formulation.