Ethylene-.alpha.-olefin copolymer and process for producing the

Details Ethylene-.alpha.-olefin copolymer and process for producing the Ethylene-.alpha.-olefin copolymer and process for producing the

1989-06-08

1992-01-21

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5261692, 526348, 5263486, C08F 4609, C08F21016

Patent

active

050829084

ABSTRACT:
An ethylene-.alpha.-olefin copolymer is disclosed, which comprises ethylene and an .alpha.-olefin having from 3 to 10 carbon atoms, has an ethylene/.alpha.-olefin molar ratio of from 88/12 to 98/2, and which has a number average molecular weight of from 35,000 to 80,000 and a weight average molecular weight
umber average molecular weight ratio of from 1.8/1 to 3.0/1 as determined by gel permeation chromatography. A process for producing the ethylene-.alpha.-olefin copolymer is also disclosed. The ethylene-.alpha.-olefin copolymer exhibits excellent transparency and excellent low-temperature heat-sealing properties. The process is advantageous from the standpoint of equipment, energy and cost.

REFERENCES:
patent: 3301834 (1967-01-01), Christman
patent: 3600368 (1971-08-01), Schaum et al.
patent: 3622548 (1971-11-01), Emde et al.
patent: 3645992 (1972-02-01), Elston
Patent Abstracts of Japan, vol. 12, No. 223 (C-507)[3070], 24th Jun. 1988; & JP-A-63 20 309 (Japan Synthetic Rubber Co., Ltd.) 28-01-1988.

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