Process for modifying the viscosity of copolymers of ethylene an

Details Process for modifying the viscosity of copolymers of ethylene an Process for modifying the viscosity of copolymers of ethylene an

1992-07-10

1993-05-25

Schofer, Joseph L.

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

Synthetic resins

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

525360, 52631825, 526329, 5263295, 5263297, 526331, 528485, 528486, 528490, C08F 806, C08F 626

Patent

active

052141080

ABSTRACT:
The viscosity of copolymers of a) ethylene, b) C.sub.1 -C.sub.8 acrylates, C.sub.1 -C.sub.8 methacrylates, or vinyl esters of C.sub.1 -C.sub.8 carboxylic acids, and c) at least one alpha, beta-unsaturated carboxylic acid of 3-12 carbon atoms selected from the group consisting of monocarboxylic acids, dicarboxylic acids, and monoesters of dicarboxylic acids is increased, while maintaining gel content at a level of less than 3%, by treatment with a mixture of an organic peroxide and a chromium (III) salt.

REFERENCES:
patent: 3267083 (1966-08-01), Imhof
patent: 4304887 (1981-12-01), Cohen
patent: 4987199 (1991-01-01), Takao et al.

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