Particulate polymer and preparation process thereof

Details Particulate polymer and preparation process thereof Particulate polymer and preparation process thereof

1987-12-24

1990-12-11

Ivy, C. Warren

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

528491, 528498, 528500, 523328, 523335, C08J 316

Patent

active

049772414

ABSTRACT:
Disclosed herein is a particulate polymer prepared by the agglomeration of polymer particles contained in a polymer latex. The particulate polymer is composed of primary particles having particle sizes of at least 20 .mu.m and/or secondary particles formed by the agglomeration of at least some of the primary particles and is in the form of a compact mass substantially free of voids. The particulate polymer is prepared by coagulating the polymer latex in the presence of a coagulant and an organic liquid having low solubility in water. The particulate polymer has a high bulk specific gravity and contains few fine particles. It is thus easy to handle and allows the consumption of energy to be reduced in the drying step.

REFERENCES:
patent: 4340723 (1982-07-01), Duyzings
patent: 4401806 (1983-08-01), Hagiwara
patent: 4491658 (1985-01-01), Sugimori

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