Purification of polymer solutions

Details Purification of polymer solutions Purification of polymer solutions

1985-07-08

1987-01-13

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

526173, 528482, C08J 308

Patent

active

046365400

ABSTRACT:
Cloudy material in organic diluent solutions of macromonomers, prepared by anionic polymerization with a lithium initiator and termination with a halogen-containing terminating agent is removed by treating the polymer solutions resulting from the polymerization with an adsorbent selected from an alkaline earth metal silicate, an ion exchange resin, and a mixture of the silicate and ion exchange resin composition, separating the solid material from the solutions, and isolating the macromonomer.

REFERENCES:
patent: 2977346 (1961-03-01), Cull
patent: 3176037 (1965-03-01), Warner
patent: 3209050 (1965-09-01), Hanson

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