A recycling process for the production of adipic acid and...

Details A recycling process for the production of adipic acid and... A recycling process for the production of adipic acid and...

C - Chemistry, Metallurgy

07

C

C07C 55/14 (2006.01) C07C 51/31 (2006.01)

Patent

CA 2145305

The invention relates to a process for the oxidative preparation of C5-C8 aliphatic dibasic acids by: (1) reacting (a) at least one saturated cycloaliphatic hydrocarbon having from 5 to 8 ring carbon atoms in the liquid phase and (b) an excess of an oxygen-containing gas in the presence of (c) a solvent comprising an organic acid containing only primary and/or secon- dary hydrogen atoms and (d) at least about 0.002 mole per 1000 grams of reaction mixture of a polyvalent heavy metal catal- yst; (2) removing the aliphatic dibasic acid; and (3) recycling intermediates post-oxidation components and derivatives thereof remaining after removal of the aliphatic dibasic acid into the oxidation reaction

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