Preparation of carboxyl-containing copolymers of ethylene

Details Preparation of carboxyl-containing copolymers of ethylene Preparation of carboxyl-containing copolymers of ethylene

1994-09-29

1995-12-05

Lipman, Bernard

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

Synthetic resins

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

5253295, 5253304, C08F 800

Patent

active

054730252

ABSTRACT:
Carboxyl-containing copolymers of ethylene are prepared by polymer-analogous pyrolytic ester cleavage of copolymers consisting of
a) from 60 to 99.9 mol% of ethylene,
b) from 0.1 to 40 mol% of C.sub.4 -C.sub.8 -tert-alkyl esters of copolymerizable C.sub.3 -C.sub.12 -carboxylic acids and
c) from 0 to 20 mol% of further copolymerizable monomers by a method in which pyrolytic ester cleavage is carried out at from 150.degree. to 250.degree. C. in the presence of organic sulfonic acids, in the absence of a solvent and in the virtual absence of free radical initiators.

REFERENCES:
patent: 3132120 (1964-05-01), Graham
patent: 3736305 (1973-05-01), Kinkel et al.
patent: 4638034 (1987-01-01), McClain
Chem. Abst., vol. 82, No. 22, Jun. 2, 1975 (English abstract of DE 107 938).

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