Method for making organic polycarboxylic acids

Details Method for making organic polycarboxylic acids Method for making organic polycarboxylic acids

C - Chemistry, Metallurgy

07

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260/306.2, 260/3

C07D 307/89 (2006.01) C07C 51/567 (2006.01) C07D 207/448 (2006.01) C07D 209/48 (2006.01)

Patent

CA 1095917

ABSTRACT OF THE DISCLOSURE A method is described for making organic poly- carboxylic acids or anhydrides, such as aromatic ether bis(phtalic acid)s, based on a cyclic imide-cyclic anyhdride exchange reaction at elevated temperatures in the presence of water. In addition to making organic polycarboxylic acid and organic imides there are also generated certain imide carbonyl compounds such as Image

287909

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