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Title:
METHOD FOR PRODUCING 1,2,4,5-CYCLOHEXANETETRACARBOXYLIC DIANHYDRIDE
Document Type and Number:
WIPO Patent Application WO/2018/180855
Kind Code:
A1
Abstract:
The purpose of the invention is to provide a method for producing 1,2,4,5-cyclohexanetetracarboxylic dianhydride with which a high dehydration rate can be achieved stably. This method for producing 1,2,4,5-cyclohexanetetracarboxylic dianhydride is a method for producing 1,2,4,5-cyclohexanetetracarboxylic dianhydride by subjecting 1,2,4,5-cyclohexanetetracarboxylic acid to a dehydration reaction in a slurry state in the presence of a dehydrator, the method being characterized by supplying the 1,2,4,5-cyclohexanetetracarboxylic acid to the dehydrator dividedly or continuously.

Inventors:
SHIRAI SHINYOU (JP)
KUMANO TATSUYUKI (JP)
SAITO SHINYA (JP)
Application Number:
PCT/JP2018/011333
Publication Date:
October 04, 2018
Filing Date:
March 22, 2018
Export Citation:
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Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
C07D493/04
Domestic Patent References:
WO2010010869A12010-01-28
Foreign References:
JP2003286222A2003-10-10
JPS53103437A1978-09-08
JP2006124313A2006-05-18
JP2006045166A2006-02-16
CN103992330A2014-08-20
JP2003286222A2003-10-10
Other References:
See also references of EP 3604314A4
Attorney, Agent or Firm:
OHTANI, Tamotsu (JP)
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