C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
400/110, 402/159
C08G 18/10 (2006.01) C08G 18/32 (2006.01) C08G 18/76 (2006.01)
Patent
CA 1310776
ICI-Am 1709-3 ABSTRACT Modified organic isocynate composition containing urea and/or biuret groups, and/or salts of these groups, prepared by reacting a blocked amine composition and a polyisocyanate composition, said blocked amine composition being the reaction product of : a. a primary and/or secondary organic amine composition having an average amine functionality of at least 0.1 and an average total active hydrogen functionality of from about 1.5 to about 10.0, and b. a reactivity modifying agent selected from proton acids, Lewis acids, silylating agents, metallating agents and alkylating agents, and said polyisocyanate composition comprising organic polyisocyanates and/or polyisothiocyanates having a reactive isocyanate and/or isothiocyanate functionality of at least 1.0, the reaction between said blocked amine and polyisocyanate compositions being conducted so as to provide an excess of isocyanate and/or isothiocyanate groups over total active hydrogens in the blocked amine composition of at least 1.5 : 1Ø
516752
Barlow C. Brian
Gillis Herbert R.
Ici Americas Inc.
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