Process for production of fumaric acid by isomerization of malei

Details Process for production of fumaric acid by isomerization of malei Process for production of fumaric acid by isomerization of malei

1999-04-21

2000-08-15

Geist, Gary

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

Organic compounds

Carboxylic acids and salts thereof

560595, C07C 5100, C07C 5715

Patent

active

061039357

ABSTRACT:
The present invention relates to a process for the production of fumaric acid by the isomerization of maleic acid at high conversions which comprises heating maleic acid in the presence of phosphoric acid at a temperature sufficient to isomerize the maleic acid to fumaric acid.

REFERENCES:
patent: 2393352 (1946-01-01), Winstrom
patent: 2816922 (1957-12-01), Stephenson
patent: 2816923 (1957-12-01), Stephenson

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