Aqueous systems containing silanes for rendering masonry...

Details Aqueous systems containing silanes for rendering masonry... Aqueous systems containing silanes for rendering masonry...

C - Chemistry, Metallurgy

09

K

25/108, 134/47

C09K 3/00 (2006.01) C04B 41/49 (2006.01) C04B 41/84 (2006.01) C08L 83/06 (2006.01) C09D 4/00 (2006.01)

Patent

CA 1277891

ABSTRACT OF THE DISCLOSURE There is provided an aqueous emulsion of (a) a hydrolyzable silane having the general formula: Rn - Si - (R')4-n wherein R is a hydrocarbyl group containing from 1 to 20 carbon atoms, R' is a hydrolyzable group and n is 1 or 2, and oligomers thereof, e.g., dimers and trimers, and other oligomers, (b) an emulsifying agent having an HLB value of from 4 to 15, and (c) water. The emulsion is useful for rendering porous ceramic materials water repellant.

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