Modified block copolymers having carboxyl groups grafted on the

Details Modified block copolymers having carboxyl groups grafted on the Modified block copolymers having carboxyl groups grafted on the

1987-07-30

1989-09-19

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525366, 525314, 525366, 525370, 525383, 525386, C08L 5302, C08L 2506

Patent

active

048682454

ABSTRACT:
A thermoplastic polymer and an article of manufacture consisting essentially of this polymer are described herein which possess excellent mechanical properties at both room and elevated temperatures. The polymer is obtained by modifying a block copolymer composed of a conjugated diene compound and an alkenyl arene compound. The block copolymer is first selectively hydrogenated and thereafter modified by grafting carboxyl containing functional groups primarily in the alkenyl arene block via metalation. The mechanical properties may be varied and controlled by varying the degree of functionalization (amount of carboxyl groups), and the degree of neutralization of the carboxyl groups from an acid to a metal carboxylate salt.

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