Green strength of synthetic elastomers

Details Green strength of synthetic elastomers Green strength of synthetic elastomers

1977-09-23

1978-11-07

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 21, 526 51, C08F 830

Patent

active

041247507

ABSTRACT:
The green strength of synthetic elastomers is improved by mixing a synthetic elastomer such as synthetic cis-1,4-polyisoprene or polybutadiene with from about 0.25 to about 2.0 parts by weight of a dihydrazide compound per 100 parts of the elastomer. Upon mixing at temperatures ranging from about 125.degree. F to about 300.degree. F, the dihydrazide will crosslink the synthetic elastomers and impart thereto improved green strength. This synthetic elastomer may then be blended with either natural or synthetic cis-1,4-polyisoprene in accordance with common practice in the rubber industry when the end product is a tire.

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