Process for producing atactic polyolefin polymers

Details Process for producing atactic polyolefin polymers Process for producing atactic polyolefin polymers

1987-01-30

1988-10-11

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525247, 525319, 525322, 525323, C08F29708, C08F 402

Patent

active

047772166

ABSTRACT:
The invention relates to a process for the controlled polymerization of alpha-olefins selected from the group consisting of propylene and butylene in order to form a polymer containing by weight about 10% to 30% isotactic polyolefin, 25% to 70% atactic polyolefin and 0% to 65% by weight of an amorphous ethylene/olefin copolymer which process comprises combinations of the steps of:

REFERENCES:
patent: 3923758 (1975-12-01), Carter et al.
patent: 4298713 (1981-11-01), Morita et al.
patent: 4308357 (1981-12-01), Kaus et al.
patent: 4520163 (1985-05-01), Goodall
patent: 4576994 (1986-03-01), Dorrer et al.

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