Unsaturated copolymer of ethylene and process for preparing the

Details Unsaturated copolymer of ethylene and process for preparing the Unsaturated copolymer of ethylene and process for preparing the

1997-08-21

1998-11-17

Zitomer, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526337, 526339, 5263482, 5263483, G08F23620

Patent

active

058377913

ABSTRACT:
A novel unsaturated copolymer of ethylene comprises a random copolymer of (i) ethylene, (ii) an .alpha.-olefin of 3 to 20 carbon atoms and (iii) at least one straight chain or branched chain nonconjugated triene or tetraene having one vinyl group in the molecule, which contains 30-92% by mol of ethylene units (i), 6-70% by mol of .alpha.-olefin units (ii) and 0.1-30% by mol of triene or tetraene units (iii), and which has a molar ratio of ethylene units (i) to .alpha.-olefin units (ii) of 40/60 to 92/8 (ethylene units (i)/.alpha.-olefin units (ii)) and an intrinsic viscosity (.eta.), measured in Decalin at 135.degree. C., of 0.05 to 10 dl/g. This novel unsaturated copolymer of ethylene is excellent in weathering resistance, heat resistance and ozone resistance and has a high vulcanizing rate.

REFERENCES:
patent: 3480599 (1969-11-01), Parr
patent: 3846387 (1974-11-01), Su
patent: 3887531 (1975-06-01), Schneider et al.
patent: 3900452 (1975-08-01), Valvasseri et al.

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