Method of preparing homo and co-polymers of vinyl chloride...

Details Method of preparing homo and co-polymers of vinyl chloride... Method of preparing homo and co-polymers of vinyl chloride...

C - Chemistry, Metallurgy

08

F

402/304, 402/398

C08F 14/06 (2006.01) C08F 6/20 (2006.01) C08J 3/16 (2006.01)

Patent

CA 1153498

ABSTRACT A method is disclosed of preparing homo and co-polymers of vinyl chloride in the form of a powder for use in forming plastisols. A latex of a homo- or co-polymer of vinyl chloride, containing from 30 to 60% by weight of dry material and comprising two populations of particles with specific granulometric properties, is concentrated by eliminating a fraction of the aqueous phase in the liquid state, then the residual water is evaporated. The dry material content of the latex after concentration is from 50 to 80% by weight, and the absolute difference between the dry material content of rheo- latex before and after concentration is greater than 10% by weight. Plastisols obtained from the homo- and co-polymers of vinyl chloride have improved rheo- logical properties.

363882

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