Iodide removal process

Details Iodide removal process Iodide removal process

1993-01-14

1996-10-01

Zitomer, Fred

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

Synthetic resins

Ion-exchange polymer or process of preparing

210683, 521 30, 525350, 525370, C08F 834, B01D 1504, B01J 3918, B01J 4112

Patent

active

055611680

ABSTRACT:
This invention relates to the use of ion exchange resins having metal-exchanged thiol functional groups in removing iodide impurities from carboxylic acids and/or carboxylic acid anhydrides. More particularly, this invention provides a process for removing iodide impurities from liquid carboxylic acids and/or carboxylic acid anhydrides using ion exchange resins in which thiol functional groups have been exchanged with silver, palladium or mercury.

REFERENCES:
patent: 2891916 (1959-06-01), Hwa
patent: 3085072 (1963-04-01), Zima
patent: 3454503 (1969-07-01), Blankenhorn
patent: 4615806 (1986-10-01), Hilton
F. Helfferich, "Ion Exchange", 168-169 (1962) McGraw-Hill (New York).

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