Process for preparing vinyl alcohol copolymer

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525 60, 526 82, 526 84, C08F 800

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active

047467002

ABSTRACT:
A process for preparing a vinyl alcohol copolymer, which comprises adding at least one specific olefin derivative containing phenyl group to a solution of vinyl ester copolymer when the predetermined polymerization conversion has been attained, removing an unpolymerized monomer and hydrolyzing the copolymer. The hydrolyzed copolymer easily gives transparent film which has not fish eyes or surface roughness without generation of fumes or bad odors and coloration during molding.

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