Polyurethane sealant system

Details Polyurethane sealant system Polyurethane sealant system

C - Chemistry, Metallurgy

08

G

402/131, 117/143

C08G 18/48 (2006.01) C08G 18/10 (2006.01) C08G 18/22 (2006.01) C08K 5/57 (2006.01) C08L 75/08 (2006.01)

Patent

CA 1163039

Abstract of the Disclosure: A polyurethane sealant including a polyurethane having terminal isocyanate groups and containing a dual curing catalyst of organic bismuth and organic tin, said polyurethane being the reaction product of a liquid poly (lower) alkylene polyol having a molecular weight of 6,000 or more and three to five hydroxyl groups and a sterically unhindered aromatic dissocyanate. The polyurethane sealant may be used in conjunction with a silane based primer and when applied to glass surfaces provides a high strength and rapidly curing seal.

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