Crystalline olefin polymers and copolymers in the form of spheri

Details Crystalline olefin polymers and copolymers in the form of spheri Crystalline olefin polymers and copolymers in the form of spheri

1991-06-21

1993-07-27

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

521 56, 521143, 521144, 521134, 526124, 526125, 5263472, 526351, 526352, C08F 200, C08F 442, C08J 928

Patent

active

052311198

ABSTRACT:
Crystalline olefin polymers and copolymers in the form of spherical particles having porosity (expressed in percentage of voids) higher than 15%, with more than 90% of the pores having a pore diameter greater than one micron. These polymeric particulate materials find many applications, including, e.g., the preparation of masterbatches containing significant quantities of additives and/or pigments.

REFERENCES:
patent: 3450682 (1969-06-01), Sasaki et al.
patent: 3953414 (1976-04-01), Galli et al.
patent: 4293673 (1981-10-01), Hamer et al.
patent: 4380507 (1983-04-01), Noristi et al.
patent: 4983693 (1991-01-01), Haag et al.

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