Process for the preparation of water-soluble copolymers

Details Process for the preparation of water-soluble copolymers Process for the preparation of water-soluble copolymers

1988-07-12

1989-05-23

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...

5253291, 5253292, 525387, C08L 904

Patent

active

048331996

ABSTRACT:
Process for the preparation of aqueous solutions of hydrolysed styrene/acrylonitrile copolymers, the carboxyl groups of which are entirely or partly present as NH.sub.4 and/or alkali metal salt, characterized in that

REFERENCES:
patent: 2812317 (1957-11-01), Barrett
patent: 3060142 (1962-10-01), Isabella
patent: 4107121 (1978-08-01), Stoy
patent: 4272422 (1981-06-01), Tanaka

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