Ion exchange resins

Details Ion exchange resins Ion exchange resins

1978-05-08

1981-01-20

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

521 31, 521 32, 521 33, 526281, 526283, 526285, C08F 238

Patent

active

042463866

ABSTRACT:
Hard, infusible, discrete beads of crosslinked copolymer are prepared by free-radical catalyzed polymerization of a monomer mixture in aqueous dispersion wherein a minor amount of a modifier, specifically an organic compound containing acetylenic or allylic unsaturation having the ability to moderate the rate of polymerization, is incorporated in the monomer mixture. Ion exchange resins having improved mechanical strength are obtained by attaching functional groups to the copolymer.

REFERENCES:
patent: 2241770 (1941-05-01), Dreisbach et al.
patent: 2290547 (1942-07-01), Dreisbach et al.
patent: 3674728 (1972-07-01), Carbonnel et al.
patent: 3976629 (1976-08-01), Hayward et al.

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