Modified block copolymer/oil blends

Details Modified block copolymer/oil blends Modified block copolymer/oil blends

1990-03-15

1991-03-26

Schofer, Joseph L.

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...

524534, C08K 5300

Patent

active

050029975

ABSTRACT:
A blend of a modified thermoplastic block polymer of a conjugated diene and an alkenyl arene with an extender resin compatible with the conjugated diene block is described herein. The block copolymer is first selectively hydrogenated and thereafter modified by grafting carboxyl functional groups primarily in the alkenyl arene blocks.

REFERENCES:
patent: 3485787 (1969-12-01), Haefele et al.
patent: 3577357 (1971-05-01), Winkler
patent: 3827999 (1974-08-01), Crossland
patent: 3830767 (1974-08-01), Condon
patent: 4086171 (1978-04-01), Wood et al.
patent: 4377647 (1983-03-01), Durbin et al.
patent: 4868245 (1989-09-01), Pottick et al.

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