IMPROVED SOLVENTLESS SULFONATION OF EXCHANGE RESINS

Title:

IMPROVED SOLVENTLESS SULFONATION OF EXCHANGE RESINS

Document Type and Number:

WIPO Patent Application WO2006019367

Kind Code:

B1

Abstract:

A process for the preparation of styrene-divinylbenzene gel cationic exchange resins by sulfonation in sulfuric acid, without the addition of a swelling agent or acrylic co-monomers, with relatively fast hydration rate. The use of temperature and acid concentration to increase the rate of sulfonation while controlling the side reaction of sulfone bridging minimizes reaction time while maximizing bead quality.

Inventors:

TEGEN MARVIN H (US)
TESCH RANDY S (US)
HARRIS WILLIAM I (US)

Application Number:

PCT/US2004/021564

Publication Date:

August 03, 2006

Filing Date:

July 06, 2004

Export Citation:

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Assignee:

DOW GLOBAL TECHNOLOGIES INC (US)
TEGEN MARVIN H (US)
TESCH RANDY S (US)
HARRIS WILLIAM I (US)

International Classes:

C08F8/36; B01J39/20; C08F212/08; C08F212/36; C08F257/02; C08J5/20

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