Polymeric adsorbents from macroreticular polymer beads

Details Polymeric adsorbents from macroreticular polymer beads Polymeric adsorbents from macroreticular polymer beads

1980-03-12

1981-04-21

Schofer, Joseph L.

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

Synthetic resins

Ion-exchange polymer or process of preparing

B01J 122, C08F21236, C08J 324

Patent

active

042634075

ABSTRACT:
Polymeric adsorbents exhibiting improved porosity and adsorption are produced from lightly crosslinked macroreticular aromatic copolymer beads by post-crosslinking the copolymer beads while in a swollen state, the crosslinks resulting from the post-crosslinking comprising the residue of an external crosslinker selected from a polyfunctional alkylating agent, a polyfunctional acylating agent, and a sulfur halide. An acid catalyst is used for the post-crosslinking, such as a Friedel-Crafts catalyst. The adsorbents may be functionalized to ion exchange resins.

REFERENCES:
patent: 3586644 (1971-06-01), Jon de Jong
patent: 4191813 (1980-03-01), Reed et al.
patent: 4192920 (1980-03-01), Amick
patent: 4217421 (1980-08-01), Beasley

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