Ethylene copolymers

Details Ethylene copolymers Ethylene copolymers

1987-04-15

1988-09-20

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 2040, C08F 2018

Patent

active

047726733

ABSTRACT:
Waxy highly branched copolymers having a molecular weight of 500 to 20,000 comprised of at least 60% by weight of ethylene, 1 to 39% by weight of an alkene carboxylic acid ester and/or a vinyl ester and 1-30% by weight of a vinyl ketone produced by polymerization at 100 to 350.degree. C. and a pressure of about 1,000 to 8,000 bar in the presence of a radical forming initiator and in the absence of a solvent useful as oil additives to improve flow characteristics of crude oils and middle distillates derived from crude oil.

REFERENCES:
patent: 3591502 (1971-07-01), Ilnyckyj
patent: 3853814 (1974-12-01), Guillet
patent: 4230843 (1980-10-01), Coleman
patent: 4245076 (1981-01-01), Marquardt

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