Polyfunctional isocyanates free of alkali and urea groups

Details Polyfunctional isocyanates free of alkali and urea groups Polyfunctional isocyanates free of alkali and urea groups

C - Chemistry, Metallurgy

08

G

400/111, 402/159

C08G 18/73 (2006.01)

Patent

CA 1145898

ABSTRACT OF THE DISCLOSURE This invention relates to a polyfunctional isocyanate which is an acrylamide or methacrylamide homopolymer or interpolymer having 20 to 100% of its secondary .alpha. and tertiary .alpha. carbon atom amide groups converted to isocyanate groups, said polyfunctional isocyanate being free of alkali and ?ea groups. The polyfunctional isocyanates are prepared by reacting the N-chloramide derivative of the acrylamide or methacrylamide polymer, in an inert solvent, with a tertiary amine have a pka value of more than 7. The polyfunctional isocyanates are useful for forming coating compositions.

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