Method for producing graft-modified copolymers

Details Method for producing graft-modified copolymers Method for producing graft-modified copolymers

1993-04-30

1994-08-02

Jagannathan, Vasu S.

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

Synthetic resins

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

525285, 525286, 525302, 525309, 525317, C08F27900

Patent

active

053346645

ABSTRACT:
A method for producing a graft-modified copolymer comprising the step of subjecting 100 parts by weight of an unsaturated copolymer comprising an .alpha.-olefin of 3 to 12 carbon atoms and a cyclic olefin represented by the following formula (I), and 0.1 to 300 parts by weight of a radically polymerizable monomer to the radical polymerization conditions: ##STR1## wherein R.sup.1 is a C.sub.2-5 alkylidene group or a C.sub.2-5 alkenyl group, R.sup.2 is a C.sub.1-5 hydrocarbon radical or H, and n is 0, 1 or 2.
The graft-modified copolymer is imparted with various properties which are attributed to the polymer chain formed from the radically polymerizable monomer, without the excellent properties inherent in an .alpha.-olefin polymer being impaired. The copolymer is excellent in compatibility with other resins.

REFERENCES:
patent: 5059658 (1991-10-01), Sezume et al.
patent: 5153270 (1992-10-01), Roncetti et al.

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