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1. (WO2018180854) METHOD FOR PRODUCING 1,2,4,5-CYCLOHEXANETETRACARBOXYLIC DIANHYDRIDE

Pub. No.:    WO/2018/180854    International Application No.:    PCT/JP2018/011331
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Fri Mar 23 00:59:59 CET 2018
IPC: C07D 493/04
C07C 51/43
C07C 61/08
Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC.
三菱瓦斯化学株式会社
Inventors: SHIRAI, Shinyou
白井 慎洋
KUMANO, Tatsuyuki
熊野 達之
SAITO, Shinya
齋藤 伸弥
Title: METHOD FOR PRODUCING 1,2,4,5-CYCLOHEXANETETRACARBOXYLIC DIANHYDRIDE
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.