Process for the preparation of diene rubber vulcanizates

Details Process for the preparation of diene rubber vulcanizates Process for the preparation of diene rubber vulcanizates

1992-08-31

1994-08-30

Henderson, Christopher

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253327, 525352, C08C 1922, C08C 1920

Patent

active

053429001

ABSTRACT:
Vulcanization of diene rubbers at a temperature of from 140.degree. to 200.degree. C. in the presence of 1 to 4.5 parts of a crosslinker having the formula ##STR1## wherein n denotes 2 or 6 and Bz denotes benzyl, in the simultaneous presence of a very small amount of sulfur and a small amount of a mercapto or sulfenamide accelerator or mixtures thereof affords elastomers having a previously unachieved outstanding ageing stability and reversion stability, after relatively short vulcanization times using economical amounts of chemicals while avoiding blooming phenomena in the vulcanizate.

REFERENCES:
patent: 3869435 (1975-03-01), Trivette, Jr.

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