Ethylene copolymer and method of producing same

Details Ethylene copolymer and method of producing same Ethylene copolymer and method of producing same

1991-07-15

1993-01-26

Schoffer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526352, C08F 2606

Patent

active

051823497

ABSTRACT:
A copolymer is manufactured by allowing ethylene (A) and vinyl compounds (B) represented by the following general formula to undergo radical polymerization at a pressure of 1000-5000 kg/cm.sup.2 and a temperature of 100.degree.-400.degree. C., ##STR1## wherein R.sub.1 and R.sub.2 are each an independent hydrogen atom or a methyl group, R.sub.3 is a hydrogen atom or an alkyl group of 1-4 carbon atoms; a ratio of (B) to the sum of (A) and (B) is less than 1 mol %; a proportion of the amount of vinyl compounds (B), which are not successively bonded at all to the units (B) in the chain, but bonded to unlike units (A) on both sides thereof, to the total amount of (B) units in the copolymer is at least a 83%; and an MFR of the copolymer ranges from 0.1 to 200 g/10 min.
Although the copolymer contains only a small amount of the vinyl compound (B) it nevertheless has excellent photo stabilizing effects.

REFERENCES:
patent: 4276401 (1981-04-01), Karrer
patent: 4308362 (1981-12-01), Wiezer et al.

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