Process for the preparation of grafted polymers of improved colo

Details Process for the preparation of grafted polymers of improved colo Process for the preparation of grafted polymers of improved colo

1989-10-16

1992-04-21

Bleutge, John C.

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

Synthetic resins

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

525263, 525265, 525285, 525302, 525539, C08F 436, C08F25502, C08F26504

Patent

active

051069164

ABSTRACT:
This invention relates to a process for the catalytic grafting of an ethylenically unsaturated monomer onto a copolymer in the presence of a catalyst. The monomer is selected from the group consisting of ethylenically unsaturated carboxylic acids, anhydrides esters and other derivatives thereof. The copolymer is selected from the group consisting of certain copolymers of ethylene and ionomers of such copolymers. The catalyst is a mixture of (a) a certain amount of water and (b) at least one of certain phosphorus-containing compounds. The process comprises admixing copolymer, monomer, catalyst and an organic peroxide at a temperature above the melting point of the copolymer for a period of time so as to obtain a uniform distribution of monomer, catalyst and peroxide in the copolymer. The resultant grafted copolymer has improved color, and is useful in adhesive systems and as a compatibilizer for polymers and other materials.

REFERENCES:
patent: 3917745 (1975-11-01), D'Angelo
patent: 4006201 (1977-02-01), Bauer
patent: 4066608 (1978-01-01), Van Brederode
patent: 4187202 (1980-02-01), Kondo
patent: 4602056 (1986-07-01), Waniczek et al.

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