Process for preparation of anion exchange resin

Details Process for preparation of anion exchange resin Process for preparation of anion exchange resin

1996-10-31

1998-03-10

Zitomer, Fred

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

Synthetic resins

Ion-exchange polymer or process of preparing

521 25, 521 30, 5253334, 5253336, 525336, 525374, 525379, C08F 832, B01J 3908, B01J 3920

Patent

active

057262101

ABSTRACT:
A process for the preparation of an anion exchange resin is described, which comprises reacting an aromatic crosslinked haloalkyl-containing copolymer with an amine in the presence of at least 100 parts by weight, per 100 parts by weight of the copolymer, of water and at least 5 parts by weight, per 100 parts by weight of water, of a water-soluble inorganic salt. A process for the preparation of an anion exchange resin is also described, which comprises acting a haloalkylating agent on an aromatic crosslinked copolymer, separating an unreacted portion of the haloalkylating agent from the aromatic crosslinked haloalkyl-containing copolymer so obtained, and reacting the resulting haloalkyl-containing copolymer with an amine in the presence of at least 100 parts by weight, per 100 parts by weight of the copolymer, of water and at least 5 parts by weight, per 100 parts by weight of water, of a water-soluble inorganic salt.

REFERENCES:
patent: 2631999 (1953-03-01), McMaster
patent: 4322501 (1982-03-01), Lee
patent: 4785020 (1988-11-01), Boom
Helfferich, "Ion Exchange" (1962) 53-55, McGraw-Hill (New York).

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