Silicone weatherproofing compositions
OwnerWen P. Liao, Timothy J. Fahrenkopfinventors
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Abstract
A weatherproofing composition containing an aqueous aminofunctional polyorganosiloxane emulsion, an aqueous organic polymer emulsion, a colorant and a particulate filler is useful for weatherproofing exterior wood and masonry surfaces.
Claims18
An aqueous weatherproofing composition comprising:
- (a) a water emulsifiable aminofunctional polyorganosiloxane;
- and
- (b) a water emulsifiable hydrophobic organic polymer.
An aqueous weatherproofing composition comprising:
- (a) a water emulsifiable aminofunctional polyorganosiloxane having the formula (I):
- R1aR2bSiO(4−(a+b))/2 (I)
- wherein:
- (i) each R1 is independently hydroxyl or a monovalent hydrocarbon radical,
- (ii) each R2 is independently a monovalent amino-functional hydrocarbon radical, and 0≦a≦2, and 1≦b≦3 subject to the limitation that (a+b)≦3;
- (b) a water emulsifiable hydrophobic organic polymer selected from the group consisting of polyurethanes, polyacrylates, poly(styrene-butadiene)s, poly(styrene-acrylate)s, poly(styrene-melamine)s and paraffinic waxes;
- and
- (c) a water insoluble particulate filler wherein said filler is water dispersible.
A method of weatherproofing exterior surfaces comprising treating the exterior surfaces with an aqueous weatherproofing composition said composition comprising:
- (a) a water emulsifiable aminofunctional polyorganosiloxane;
- and
- (b) a water emulsifiable hydrophobic organic polymer.
A weatherproofed substrate wherein said substrate has been weatherproofed by treating with an aqueous weatherproofing composition said composition comprising:
- (a) a water emulsifiable aminofunctional polyorganosiloxane;
- and
- (b) a water emulsifiable hydrophobic organic polymer.
Dependencies are inferred from the claim text.