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A low temperature process for the preparation of isopropenyl-alpha, alpha-dimethyl-benzyl isocyanate-grafted latexes
A low temperature process for the preparation of isopropenyl-alpha, alpha-dimethyl-benzyl isocyanate-grafted latexes
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机译:制备异丙烯基-α,α-二甲基-苄基异氰酸酯接枝胶乳的低温方法
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摘要
A process for the preparation of novel grafted latexes having backbones formed from unsaturated 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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