Process for incorporating high molecular weight olefin based cop

Details Process for incorporating high molecular weight olefin based cop Process for incorporating high molecular weight olefin based cop

1987-09-04

1989-03-21

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...

525211, 525240, 525289, 525290, 525320, C08F25502, C08F 234

Patent

active

048143774

ABSTRACT:
A process for the incorporation of a copolymer of at least one liquid alpha-olefin or diolefin comonomer having at least 7 carbon atoms into a polymer matrix comprising:
(a) in a first reaction zone, contacting at least one alpha-olefin having 2 to 6 carbon atoms with a catalyst adapted for the polymerization thereof in such a manner that a granular polymer matrix selected from the group consisting of (i) a homopolymer of ethylene or propylene and (ii) a copolymer of ethylene or propylene and at least one alpha-olefin having 2 to 6 carbon atoms is formed in admixture with active catalyst;
(b) admixing the mixture from step (a) with at least one liquid alpha-olefin or diolefin comonomer having at least 7 carbon atoms to at least partially cost the polymer matrix; and
(c) introducing the mixture from step (b) into the first reaction zone or a second reaction zone together with at least one alpha-olefin having 2 to 6 carbon atoms in such a manner that polymerization is effected in the gas phase.

REFERENCES:
patent: 3965083 (1976-06-01), Jezl et al.
patent: 4311810 (1982-01-01), Fujii et al.
patent: 4499242 (1985-02-01), Loontjens
patent: 4710538 (1987-12-01), Jorgensen

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