Rubbery conjugated diene polymers terminated with hydrocarbyl ph

Details Rubbery conjugated diene polymers terminated with hydrocarbyl ph Rubbery conjugated diene polymers terminated with hydrocarbyl ph

1984-07-30

1985-08-27

Lipman, Bernard

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

5253329, 5253331, 5253332, 525340, C08F 840

Patent

active

045379327

ABSTRACT:
Solution polymerized rubbery conjugated diene homopolymers and copolymers with monovinylarenes are terminated with a hydrocarbyl phosphite or thiophosphite. The phosphite terminated polymers, particularly medium-vinyl polybutadiene, can be incorporated in rubber/carbon black/oil tread stock compounds employing up to 65 parts of rubber per 100 parts of polymer and up to 30 parts of oil per 100 parts of polymer for higher resilience, lower hysteresis, and generally higher tensile strength after vulcanization.

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