Title:
COMPOSITION CONTAINING BISPHENOL, PRODUCTION METHOD FOR SAME, PRODUCTION METHOD FOR BISPHENOL A, AND PRODUCTION METHOD FOR POLYCARBONATE RESIN
Document Type and Number:
WIPO Patent Application WO/2023/210563
Kind Code:
A1
Abstract:
Provided is a composition containing a bisphenol (I) which can, when used in an alkali dissolution recrystallization method, improve the isopropenylphenol recovery rate. This composition containing a bisphenol (I) comprises: a bisphenol (I) comprising bisphenol A; and a compound (II) having a structure in which at least one hydroxy group in a bisphenol has been substituted with a carbonate ester group or a carbamoyloxy group. The bisphenol (I) content of the composition containing the bisphenol (I) is at least 90 mass%, and the total number of moles of carbonyl bonds in the compound (II) is at least 0.05 µmol/g with respect to the mass of the composition containing the bisphenol (I).
Inventors:
NAKASHIMA YUKIE (JP)
UCHIYAMA KEI (JP)
UCHIYAMA KEI (JP)
Application Number:
PCT/JP2023/016061
Publication Date:
November 02, 2023
Filing Date:
April 24, 2023
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C07C39/16; C07C37/20; C07C37/74; C07C37/84; C07C69/96; C08G64/30
Domestic Patent References:
| WO2018134734A1 | 2018-07-26 |
Foreign References:
| KR20200014004A | 2020-02-10 | |||
| JP2009242316A | 2009-10-22 |
Attorney, Agent or Firm:
MINASE, Toru et al. (JP)
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