Water repellent for masonry

Details Water repellent for masonry Water repellent for masonry

B - Operations, Transporting

05

D

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B05D 3/02 (2006.01) C04B 41/49 (2006.01) C04B 41/64 (2006.01) C04B 41/84 (2006.01) C08F 283/12 (2006.01) C09K 3/18 (2006.01)

Patent

CA 1282516

6OSI 1010 WATER REPELLENT FOR MASONRY Abstract of the Disclosure There is provided a method for rendering masonry water repellent which comprises (a) contacting the masonry with a solution comprising an organopolysiloxane resin selected from the group consisting of resins containing R3SiO0.5 units and SiO2 units and resins containing R3SiO0.5 units, R2SiO2 units and SiO2 units, ratio of R3SiO0 5 units to SiO2 units ranging from about 0.2 to about 0.9:1 and resins containing R3SiO0.5 units, R2SiO units, and the ratio of SiO2 units to SiO2 units being up to about 0.1:1, where each R is an independently selected substituted or unsubstituted alkyl radical, aryl radical, alkaryl radical, aralkyl radical, cycloalkyl radical or alkenyl radical, and (b) evaporating the solvent. Preferably, the resin solution further comprises an alkylalkoxypolysiloxane resin.

530275

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