Method of isolating copolymers of vinylpyridine and styrene

Details Method of isolating copolymers of vinylpyridine and styrene Method of isolating copolymers of vinylpyridine and styrene

1988-06-13

1989-08-01

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528490, 528503, 523335, C08F 618

Patent

active

048534617

ABSTRACT:
Disclosed is a process for isolating copolymers comprising repeating units from 2-vinylpyridine and styrene by drowning the reaction emulsion into an acetic acid solution or by adding an acetic acid/water solution to the reaction emulsion. The copolymer isolated by this technique filters and washes much more rapidly than the copolymer isolated using sodium chloride, and the wet cake has a high solids content.

REFERENCES:
patent: 2830975 (1958-04-01), Irvin
patent: 3501447 (1970-05-01), Pieper et al.
patent: 4593082 (1986-06-01), Dombroski et al.
patent: 4647652 (1987-03-01), Eichenauer et al.

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