Title:
METHOD FOR CONTROLLING POLYIMIDE BACKBONE STRUCTURE AND METHOD FOR PRODUCING POLYIMIDE
Document Type and Number:
WIPO Patent Application WO/2017/159298
Kind Code:
A1
Abstract:
This method for controlling a polyimide backbone structure comprises, during the formulation of a polyimide by reaction between a diamine component and (1S,2R,4S,5R)-cyclohexane tetracarboxylic dianhydride in an organic solvent containing an aprotic amide solvent and a lactone solvent, adjusting at least one of reaction conditions which are the mass ratio of the aprotic amide solvent and the lactone solvent, the reaction temperature, the reaction time, and the amount of the aprotic amide solvent, and converting a cis structure derived from (1S,2R,4S,5R)-cyclohexane tetracarboxylic dianhydride in the produced polyimide into a trans structure derived from (1R,2S,4S,5R)-cyclohexane tetracarboxylic dianhydride, depending on the reaction condition, to control the proportion of the trans structure.
Inventors:
MATSUMARU TERUHISA (JP)
ABIKO YOHEI (JP)
SUENAGA SHUYA (JP)
ABIKO YOHEI (JP)
SUENAGA SHUYA (JP)
Application Number:
PCT/JP2017/007183
Publication Date:
September 21, 2017
Filing Date:
February 24, 2017
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
C08G73/10
Foreign References:
| JP2013184943A | 2013-09-19 | |||
| JP2009286706A | 2009-12-10 | |||
| JP2006037079A | 2006-02-09 |
Other References:
See also references of EP 3431525A4
Attorney, Agent or Firm:
OHTANI, Tamotsu (JP)
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