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Patent Searching and Data


Title:
METHOD FOR PRODUCING BISPHENOL AND METHOD FOR PRODUCING POLYCARBONATE RESIN
Document Type and Number:
WIPO Patent Application WO/2024/048494
Kind Code:
A1
Abstract:
Provided are a method for producing bisphenol capable of obtaining bisphenol having a good color tone and a method for producing a polycarbonate resin using the resulting bisphenol. The method for producing bisphenol has an adsorption/purification step for bringing an adsorbent into contact with a solution to be adsorbed/purified that contains bisphenol and an organic solvent, purifying the solution to be adsorbed/purified, and obtaining an adsorbed/purified solution, and the solution to be adsorbed/purified exhibits basicity. Also, the method for producing a polycarbonate resin has a step for obtaining bisphenol by the method for producing bisphenol and a step for producing a polycarbonate resin using bisphenol containing the resulting bisphenol.

Inventors:
NAKASHIMA YUKIE (JP)
SHIBATA HIROKI (JP)
Application Number:
PCT/JP2023/030882
Publication Date:
March 07, 2024
Filing Date:
August 28, 2023
Export Citation:
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Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C07C37/82; C07C39/16; C08G64/20; C08J11/24
Foreign References:
JPS4016536B11965-07-29
JP2022085144A2022-06-08
JP2022103564A2022-07-08
KR20230083783A2023-06-12
JP2005200379A2005-07-28
JP2016204265A2016-12-08
CN105658712A2016-06-08
JP2006022183A2006-01-26
Attorney, Agent or Firm:
MINASE, Toru et al. (JP)
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