Products Research & Chemical

Fernando E Blanco

Jack W Hutt

A liquid, highly reactive alpha-beta ureide having the formula: ##STR1## wherein R is a polymeric backbone having no groups reactive with alpha-beta unsaturated amides, n is from 2 to 4 and R.sub.1 is hydrogen, lower alkyl or halogen, the cured elastomer resulting therefrom, and a method for making same.

Alpha-beta unsaturated ureide polymers, method for making same and cured

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.

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Arleta, CA, United States of America

Fernando E Blanco