Low temperature process for the preparation of...

Details Low temperature process for the preparation of... Low temperature process for the preparation of...

C - Chemistry, Metallurgy

08

L

C08L 51/06 (2006.01) C08F 291/00 (2006.01) C08L 51/08 (2006.01)

Patent

CA 2055185

31,390-00 A LOW TEMPERATURE PROCESS FOR THE PREPARATION OF ISOPROPENYL-ALPHA,ALPHA-DIMETHYLBENZYL ISOCYANATE - GRAFTED LATEXES ABSTRACT OF DISCLOSURE A process for the preparation of novel grafted latexes having backbones formed from unsaturat- ed monomers and having pendent isocyanate containing sidechains derived from isopropenyl-alpha, alpha- dimethylbenzyl isocyanate or copolymers thereof is described. Grafting latexes is carried out using a free radical redox initiator system in an aqueous medium. Latexes such as polybutadiene, polyvinyl chloride, and polyvinyl chloride-acrylic copolymers are converted to the corresponding isocyanate-functional latexes by the process of the invention. The isocyanate-functional grafted and cografted latexes described are useful in curable compositions.

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