Process for producing dicarboxylic acid

Details Process for producing dicarboxylic acid Process for producing dicarboxylic acid

2003-01-14

2010-06-01

Chu, Yong (Department: 1626)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S002000, C562S542000

Reexamination Certificate

active

07728149

ABSTRACT:
A process produces a corresponding dicarboxylic acid by subjecting a cycloalkane to an oxidative cleavage reaction with oxygen in the presence of a catalyst in a liquid phase using a continuous reactor, in which a residence time τ (hr) satisfies the following condition: 0.1≦τ≦50/c, wherein c is the proportion (% by weight) of the cycloalkane to the total weight of a charged liquid. The catalyst includes, for example, cobalt compounds, manganese compounds, and mixtures of these compounds, as well as imide compounds having at least one cyclic imide skeleton.

REFERENCES:
patent: 4032569 (1977-06-01), Onopchenko et al.
patent: 7015356 (2006-03-01), Ishii et al.
patent: 0 824 962 (1998-02-01), None
patent: 1161191 (1969-08-01), None
Yuukikasankabutsu (1972) (Organic Peroxide—Its Chemistry and Industrial Utilization) Publisher: Kabushikighaisya Kagakukougyousya.

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