Method for purification of carboxylic acids and anhydrides

Details Method for purification of carboxylic acids and anhydrides Method for purification of carboxylic acids and anhydrides

1991-01-28

1992-12-29

Prescott, Arthur C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562606, 562898, C09F 510, C11B 300

Patent

active

051753634

ABSTRACT:
Disclosed is a method for reducing olefinic impurities in solutions of carboxylic acids and/or anhydrides. The invention is especially useful for removing substantially all, i.e., greater than 90 percent of trace amounts of olefinic impurities.

REFERENCES:
patent: 3950365 (1976-04-01), Singer et al.
patent: 4020114 (1977-04-01), Rescalli et al.
patent: 4189442 (1980-02-01), Lubsen et al.
patent: 4313016 (1982-01-01), Manning
Chemical Abstracts, 71649q, vol. 78, 1973.

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