Polymerization processes and products therefrom

Details Polymerization processes and products therefrom Polymerization processes and products therefrom

1958-07-18

1980-09-23

Anderson, Harold D.

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

Synthetic resins

Ion-exchange polymer or process of preparing

260 17A, 260 296R, 260 296XA, 260 296MH, 521 25, 521 29, 521 52, 521131, 521132, 521144, 521146, 521149, 521150, 526 89, 526200, 526210, 526212, 526213, 526263, 526316, 526320, 526323, 5263292, C08F 800, C08F 1236, C08J 520

Patent

active

042244153

ABSTRACT:
1. In a process for preparing a cation exchange resin having a water-insoluble matrix and cation exchange groups bonded thereto, the improvement comprising employing as said matrix a solid copolymer of macroreticular structure which is permeated by small channels or voids into which liquids are able to penetrate, which matrix is prepared by copolymerizing a mixture consisting essentially of (1) a monovinyl carbocyclic aromatic compound or an ester of acrylic or methacrylic acid, with (2) a polyethylenically unsaturated monomer selected from the group consisting of a polyvinyl carbocyclic aromatic compound, an ester of a dihydric alcohol and an .alpha.-.beta.-ethylenically unsaturated carboxylic acid, diallyl maleate, and divinyl ketone; the aforesaid copolymerization being conducted while the monomers are dissolved in 25 to 150% by weight, based on monomer weight, of an organic liquid or mixture of organic liquids which is a solvent for said monomers but is unable to substantially swell the copolymers resulting from copolymerization.

REFERENCES:
patent: 2366008 (1944-12-01), D'Alelio
patent: 2500149 (1950-03-01), Boyer
patent: 2540984 (1951-02-01), Jackson
patent: 2591574 (1952-04-01), McBurney
patent: 2643995 (1953-06-01), Park
patent: 2862892 (1958-12-01), Hwa
patent: 3549562 (1970-12-01), Mindick et al.
patent: 3586646 (1971-06-01), Corte et al.

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