Styrene-butadiene copolymer rubber composition

Details Styrene-butadiene copolymer rubber composition Styrene-butadiene copolymer rubber composition

1984-04-06

1986-03-11

Ziegler, Jacob

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

Synthetic resins

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

525271, 525314, 5253319, C08L 900, C08L 5300

Patent

active

045755345

ABSTRACT:
Disclosed herein is a rubber composition comprising at least 20% by weight of styrene-butadiene copolymer based on the total weight of the rubber content. The styrene-butadiene copolymer is obtained by randomly copolymerizing styrene with 1,3-butadiene in a hydrocarbon solvent in the presence of an organolithium compound as an initiator and then subjecting to a coupling reaction with a polyfunctional coupling agent, and contains 30-70% by weight of branched polymers therein, and has the following properties:

REFERENCES:
patent: 4199490 (1980-02-01), Kamiya et al.
patent: 4405754 (1983-09-01), Moczygemba et al.

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