Polyurethane sealant system

Details Polyurethane sealant system Polyurethane sealant system

1980-05-14

1981-08-18

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

427301, 427387, 4284255, 428429, 528 55, 528 58, 528 59, C08G 1810, C08G 1880

Patent

active

042847516

ABSTRACT:
A polyurethane sealant including a polyurethane having terminal isocyanate groups and containing a dual curing catalysti 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 diisocyanate. 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.

REFERENCES:
patent: 3235518 (1966-02-01), Hostettler et al.
patent: 3437622 (1969-04-01), Dahl
patent: 3453243 (1969-07-01), Hartlein
patent: 3779794 (1973-12-01), De Santis
patent: 3947426 (1976-03-01), Lander
patent: 4096291 (1978-06-01), Dunwald et al.
patent: 4154638 (1979-05-01), Frany et al.
patent: 4203875 (1980-05-01), Garner et al.

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