Process for producing unsaturated copolymers

Details Process for producing unsaturated copolymers Process for producing unsaturated copolymers

1990-05-18

1991-01-22

Seccuro, Carman J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525314, 526336, C08F29706, C08F29708, C08F23620

Patent

active

049871935

ABSTRACT:
An unsaturated copolymer of propylene and the branched diene which is 6-methyl-1,6-octadiene and/or 7-methyl-1,6-octadiene, and optionally, ethylene is produced by a two-step process wherein in a first polymerization step homopolymerization of propylene is conducted until the propylene polymer amounts to 0.01 to 10% by weight of the total and final copolymer, and in a second polymerization step the random copolymerization of propylene, 6-methyl-1,6-octadiene and/or 7-methyl-1,6-octadiene, and optionally, ethylene is then conducted as a continuation of the first step polymerization, whereby a copolymer of a specified characteristics is produced.

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