Stabilized block copolymer compositions containing ring-substitu

Details Stabilized block copolymer compositions containing ring-substitu Stabilized block copolymer compositions containing ring-substitu

1986-12-08

1988-02-02

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

525314, C08K 520

Patent

active

047229560

ABSTRACT:
Disclosed are stabilized A-B-A type block copolymer compositions containing at least two monoalkenyl arene polymer end blocks and at least one polydiene internal block and a stabilizing amount of a ring-substituted N-acyl-para-aminophenol. In two preferred embodiments, the latter compound is N-stearoyl-2,6-di-t-butyl-4-aminophenol, while the block copolymers are polystyrene-polybutadiene-polystyrene and polystyrene-polyisoprene-polystyrene, respectively.

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