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Title:
METHOD FOR PRODUCING 1,2,4,5-CYCLOHEXANETETRACARBOXYLIC DIANHYDRIDE
Document Type and Number:
WIPO Patent Application WO/2018/180854
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, wherein the average particle size of the 1,2,4,5-cyclohexanetetracarboxylic acid is 20 µm or greater.

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Inventors:
SHIRAI SHINYOU (JP)
KUMANO TATSUYUKI (JP)
SAITO SHINYA (JP)
Application Number:
PCT/JP2018/011331
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; C07C51/43; C07C61/08
Domestic Patent References:
WO2010010869A12010-01-28
Foreign References:
JP2003286222A2003-10-10
JP2006124313A2006-05-18
JP2006083080A2006-03-30
JP2003286222A2003-10-10
Other References:
See also references of EP 3604313A4
Attorney, Agent or Firm:
OHTANI, Tamotsu (JP)
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