Title:
METHOD FOR PRODUCING POLYIMIDE-BASED RESIN
Document Type and Number:
WIPO Patent Application WO/2023/101006
Kind Code:
A1
Abstract:
The present invention pertains to a method for producing a polyimide-based resin, the method comprising a step for reacting a 4,4'-(hexafluoroisopropylidene)diphthalic dianhydride (6FDA) raw material with an aliphatic diamine, wherein the charged amount of the 6FDA raw material in the step is calculated on the basis of the total peak area of an impurities-derived peak area and a 6FDA-derived peak area, which is detected when the 6FDA raw material is measured by liquid chromatography.
Inventors:
YOKOFUJITA TOSHIYUKI (JP)
ISHIWATA KOJI (JP)
MORI TAKUYA (JP)
KERSZULIS JUSTIN (US)
CHACHRA GAURAV (US)
RASMUSSEN CHRISTOPHER (US)
POLIAK LUCAS (US)
ISHIWATA KOJI (JP)
MORI TAKUYA (JP)
KERSZULIS JUSTIN (US)
CHACHRA GAURAV (US)
RASMUSSEN CHRISTOPHER (US)
POLIAK LUCAS (US)
Application Number:
PCT/JP2022/044525
Publication Date:
June 08, 2023
Filing Date:
December 02, 2022
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
ZYMERGEN INC (US)
ZYMERGEN INC (US)
International Classes:
C08G73/10
Domestic Patent References:
| WO2022163759A1 | 2022-08-04 |
Foreign References:
| JP2013023583A | 2013-02-04 | |||
| JP2020536993A | 2020-12-17 | |||
| JP2019065181A | 2019-04-25 | |||
| JP2019059959A | 2019-04-18 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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