Manufacture of cation exchange resins by pressurized sulfonation

Details Manufacture of cation exchange resins by pressurized sulfonation Manufacture of cation exchange resins by pressurized sulfonation

1997-01-27

1998-02-24

Zitomer, Fred

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

Synthetic resins

Ion-exchange polymer or process of preparing

521 30, 521 38, 525343, 525344, 525353, 525354, C08F 836

Patent

active

057212791

ABSTRACT:
Cation exchange resins are prepared by sulfonating copolymer beads in the presence of a swelling solvent under pressure. Pressure sulfonation shortens cycle times and requires less energy while maintaining or improving product quality.

REFERENCES:
patent: 2638445 (1953-05-01), Young
patent: 4113765 (1978-09-01), Richardson et al.
patent: 4209592 (1980-06-01), Akiyama et al.
patent: 5081160 (1992-01-01), Strom et al.
patent: 5523327 (1996-06-01), Song et al.
Helfferich, "Ion Exchange", (1962), 36-38, (McGraw-Hill).

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