Polymeric adsorbents from vinylbenzyl chloride copolymer beads

Details Polymeric adsorbents from vinylbenzyl chloride copolymer beads Polymeric adsorbents from vinylbenzyl chloride copolymer beads

1978-07-24

1980-03-04

Schofer, Joseph L.

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

Synthetic resins

Ion-exchange polymer or process of preparing

521 33, 525330, B01J 122, C08F21236, C08F21210, C08J 324

Patent

active

041918134

ABSTRACT:
Polymeric adsorbents exhibiting improved adsorption are produced from lightly crosslinked vinylbenzyl chloride copolymer beads by post-crosslinking the copolymer beads while in a swollen state by contact with a Lewis acid catalyst such as a Friedel-Crafts catalyst or an acidic sulfonating agent. The adsorbents post-crosslinked with a Friedel-Crafts catalyst may be functionalized to ion exchange resins. Those adsorbents post-crosslinked with a sulfonating agent already are strong acid ion exchange resins.

REFERENCES:
patent: 3729457 (1973-04-01), Davankov et al.
patent: 3822244 (1974-07-01), Peyrot
patent: 3872067 (1975-03-01), Harris

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