Treatment of waste stream from adipic acid manufacture

Details Treatment of waste stream from adipic acid manufacture Treatment of waste stream from adipic acid manufacture

C - Chemistry, Metallurgy

07

C

202/99, 260/496.

C07C 69/34 (2006.01) C07C 69/44 (2006.01)

Patent

CA 1140584

ABSTRACT OF THE DISCLOSURE This invention provides a process for improving the recovery of byproducts associated with the isolation of C4-C6 dicarboxylic acids contained in a waste byproduct stream, derived from an adipic acid manufacturing operation wherein there is involved nitric acid oxidation of a cyclohexanone/cyclohexanol feedstream. The main byproducts which are isolated are high purity dimethyl succinate, dimethyl glutarate and dimethyl adipate. Monomethyl esters of these dicarboxylic acids are recovered and recycled in the process.

364569

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