Method for preparing a vinyl polymer-polyolefine composite

Details Method for preparing a vinyl polymer-polyolefine composite Method for preparing a vinyl polymer-polyolefine composite

1993-08-06

1994-05-17

Michl, Paul R.

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

Synthetic resins

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

525 83, 525260, 525263, 525285, 525302, 525309, 525316, 524501, 524504, 523200, C08F25502, B32B 2730, C08J 302

Patent

active

053128729

ABSTRACT:
A method for preparing a polyolefine-vinyl composite, in which method about 10-200 weight fractions of vinyl monomer and about 0.01-4.0 weight fractions of a free radical polymerization initiator, based on 100 weight fractions of vinyl monomer, are impregnated in 100 weight fractions of polyolefine particles by slowly mixing these at a temperature of about 20.degree.-100.degree. C. while continuously or discontinuously adding about 1-60% by weight of water, based on the total weight of the vinyl monomer and the polyolefine, during the maintenance of the particle structure of the polyolefine, is disclosed. A water suspension is prepared by adding water and stabilizing agents to the above-mentioned mixture after a completed impregnation. The total quantity of water is about 80-1000 weight fractions, based on 100 weight fractions of polyolefine+vinyl monomer. The temperature of the water suspension is then increased for polymerizing the vinyl monomer.

REFERENCES:
patent: 3968185 (1976-07-01), Baldwin et al.
patent: 4202845 (1980-05-01), Chang et al.
patent: 4303756 (1981-12-01), Kajimura et al.
patent: 4412938 (1983-11-01), Kakizaki et al.
patent: 4920175 (1990-04-01), Kanda et al.

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