Crystalline propylene polymers and copolymers in the form of sph

Details Crystalline propylene polymers and copolymers in the form of sph Crystalline propylene polymers and copolymers in the form of sph

1992-08-13

1993-08-17

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 60, 521142, 521143, 521134, 526125, 526351, C08C 1922, C08F 834

Patent

active

052369625

ABSTRACT:
Crystalline polymers and copolymers of propylene in the form of spherical particles having a porosity (expressed in percentage of voids) greater than 15%. These polymers are useful in the preparation of masterbatch containing significant quantities of additives and/or pigments.

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patent: 4705818 (1987-10-01), Kawai et al.

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