Process for making dispersion copolymers through monomer...

Details Process for making dispersion copolymers through monomer... Process for making dispersion copolymers through monomer...

C - Chemistry, Metallurgy

08

F

402/414, 402/514

C08F 14/00 (2006.01) C08F 2/16 (2006.01) C08F 20/06 (2006.01)

Patent

CA 1218798

ABSTRACT OF THE DISCLOSURE The present invention relates to a process for producing low energy dispersion vinyl copolymers which, in a plastisol, can be fused at lower tempera- tures or in a shorter period of time than presently available dispersion vinyl copolymers. It has been found that if, instead of adding all the comonomer batchwise prior to the start of the reaction, the comonomer, such as methyl acrylate, for example, is metered into the reactor continuously, or intermittent- ly, during all or part of the polymerization reaction period, a dispersion vinyl copolymer is produced that has a lower plastisol viscosity for a given comonomer content. Plastisols made from the vinyl copolymers of the present invention have good flow properties and the fused films made therefrom have high gloss, high clar- ity and good mechanical strength, even when fused at low temperatures.

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