Rubber compositions

Details Rubber compositions Rubber compositions

1996-04-15

1998-01-06

Jagannathan, Vasu

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 99, 524191, 524192, 524193, 524194, 528 61, 528 64, C08K 524

Patent

active

057055491

ABSTRACT:
A rubber composition comprises a particular copolymer containing isobutylene unit, a paramethylstyrene unit and a parabromomethylstyrene unit; natural rubber and/or diene synthetic rubber; carbon black; and at least one hydrazide compound, and has a low value of tan .delta. at 60.degree. C. with maintaining tan .delta. at 0.degree. C. at a high level.

REFERENCES:
patent: 4124750 (1978-11-01), O'Mahoney, Jr.
patent: 4607060 (1986-08-01), Kmiec et al.
patent: 5063268 (1991-11-01), Young
patent: 5534569 (1996-07-01), Etoh

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