Patent ID: 6262171
Filing Date: 2001-07-17
Classification: C04B,C08G,C08J,C08K,C08L,C09D,C09K

Abstract:
A process for rendering porous, mineral-based building materials water-repellant, said process comprising:applying to the surface of said porous, mineral-based building materials, a coating composition containing an aqueous emulsion comprising:(A) organosilicone compositions(A1) C.sub.1 -C.sub.20 -alkyl-C.sub.2 -C.sub.6 -alkoxysilanes or(A2) organopolysiloxane containing alkoxy groups free of Si--C bonded basic nitrogen,(B) organopolysiloxane containing siloxane units having SiC-bonded radicals containing basic nitrogen, where the amine number of the organopolysiloxane is at least 0.01, and(C) an emulsifier.