Patent ID: 6569939
Filing Date: 2003-05-27
Classification: C04B,C08K,Y10S

Abstract:
A polymer composition suitable for flexibilizing building materials, said polymer composition comprising at least one of an aqueous polymer dispersion or a redispersible polymer powder prepared therefrom, said polymer comprising:a) at least one water-insoluble, film-forming addition polymer of one or more ethylenically unsaturated monomers capable of free radical polymerization, said polymer composition further comprising; b) at least one component selected from the group consisting of water soluble protective colloids, ionic emulsifiers and non-ionic emulsifiers; c) a first organosilicon compound containing amino-functional silane or siloxy moieties; and d) a second organosilicon compound different from said first organosilicon compound, wherein said organosilicon compounds c) and d) are added to said film-forming addition polymer a) following its preparation and wherein amino groups of said organosilicon compounds are present in salt form.