C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/80 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01) C09D 175/00 (2006.01)
Patent
CA 2205629
The present invention relates to heat-curable, cyclic isocyanate addition products i) which are the reaction products of a polyisocyanate having two or more isocyanate groups with a compound containing two or more isocyanate-reactive groups and ii) in which at least 10% by weight of the reaction products are in the form of cyclic groups containing urea and/or urethane groups. The present invention also relates to a process for the preparation of these cyclic isocyanate addition products and to the products obtained by curing these compositions at elevated temperatures, e.g., coatings, adhesives, molded articles, elastomers and foams.
La présente invention concerne des compositions thermodurcissables à base de produits d'addition d'isocyanate cyclique i) qui sont des produits de la réaction entre un polyisocyanate ayant deux ou plus de deux groupes isocyanates et un composé comprenant deux ou plus de deux groupes réactifs aux isocyanates et ii) chez lesquels au moins 10 % par poids des produits de la réaction se retrouvent en forme de groupes cycliques contenant des groupes d'urée et/ou d'uréthane. La présente invention concerne également un processus pour la préparation de ces produits d'addition d'isocyanate cyclique, et aux produits obtenus par le thermodurcissement desdites compositions (exemple : revêtements, adhésifs, articles moulés, élastomères et mousses).
Kumpf Robert J.
Lee Sze-Ming
Priddy Duane B. Jr.
Wicks Douglas A.
Yeske Philip E.
Corporation Bayer
Swabey Ogilvy Renault
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