Process for preparing 1,2,3,4-butanetetracarboxylic acid

Details Process for preparing 1,2,3,4-butanetetracarboxylic acid Process for preparing 1,2,3,4-butanetetracarboxylic acid

C - Chemistry, Metallurgy

07

C

260/522.2

C07C 51/09 (2006.01) C07C 55/24 (2006.01) C25B 3/10 (2006.01)

Patent

CA 2029084

Butanetetracarboxylic acid with acceptably low levels of color-causing contaminants, suitable for permanent press agent use, is prepared in high conver- sion and yield from tetraalkyl butanetetracarboxylates by a series of steps including purification of precursor material, hydrolysis with high concentration of acid catalyst, and oxidative purification of product.

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