Propylene graft copolymers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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525240, 525285, 525301, C08F25502

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active

054611130

ABSTRACT:
Propylene copolymers grafted with .alpha.,.beta.-ethylenically unsaturated carboxylic acid or carboxylic acid derivatives and consisting of a random propylene copolymer (I) with from 0.1 to 15% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes and a random propylene copolymer (II) with from 15 to 80% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes, are obtainable by reacting the graft monomer with the propylene copolymer at from 1 to 300 bar, from 0.01 to 1.0% by weight, based on the propylene copolymer, of the graft monomer being mixed with the molten propylene copolymer in the absence of a free radical initiator, and the grafting reaction being carried out at from 200.degree. to 350.degree. C.

REFERENCES:
patent: 4001172 (1977-01-01), Steinkamp et al.
patent: 4161452 (1979-07-01), Stambaugh et al.
patent: 4382128 (1983-05-01), Li
patent: 5194509 (1993-03-01), Hasenbein et al.
OZ 0050/41759, Grafted, Crosslinked and Crosslinkable Propylene Copolymers.

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