Rubber composition

Details Rubber composition Rubber composition

1996-01-03

1997-07-08

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5261692, 526283, 526336, 524554, 521150, C08L 2316, C08L 1900, C08F21018

Patent

active

056462247

ABSTRACT:
A rubber composition excellent in shape-retainability also in processibility, compression set and the like, which comprises a single ethylene-.alpha.-olefin-non-conjugated diene copolymer which has (1) a Mooney viscosity (ML.sub.1+4, 100.degree. C.) of 80 to 200, (2) a weight average molecular weight
umber average molecular weight ratio of 6 or more as measured by a gel permeation chromatography (GPC), and (3) a stress-retention of 0.2 or more after 100 seconds at 80.degree. C. in a compression type stress-relaxation test.

REFERENCES:
patent: 4125699 (1978-11-01), Yamamoto et al.
patent: 4200722 (1980-04-01), Pennings et al.
patent: 4259468 (1981-03-01), Kajiura et al.
Database WPI, Derwent Publications, AN-88-052839, JP-A-63-008408, Jan. 14, 1988.

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