Title:
POLYCARBONATE COPOLYMER, COATING SOLUTION, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, METHOD FOR PRODUCING POLYCARBONATE COPOLYMER, AND ELECTRICAL EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2021/201225
Kind Code:
A1
Abstract:
A polycarbonate copolymer having repeating units A represented by formula (1) and repeating units B represented by formula (2), the polycarbonate copolymer being obtained using bis-chloroformate oligomers represented by formula (1A) and/or formula (2A) as a raw material, and being such that the average polymer number n1 of bis-chloroformate oligomers represented by formula (1A) is 1.0-1.3 (inclusive), and the average polymer number n2 of bis-chloroformate oligomers represented by formula (2A) is 1.0-1.3 (inclusive). In formula (1), Ar1 is a group represented by formula (3). In formula (2), Ar2 is a group represented by formula (4). In formula (1A), Ar1 is synonymous with Ar1 in formula (1). In formula (2A), Ar2 is synonymous with Ar2 in formula (2). n1 and n2 represent the average polymer number.
Inventors:
HIRATA KENGO (JP)
CHIBA KAZUNORI (JP)
HIKOSAKA TAKAAKI (JP)
MORISHITA HIRONOBU (JP)
CHIBA KAZUNORI (JP)
HIKOSAKA TAKAAKI (JP)
MORISHITA HIRONOBU (JP)
Application Number:
PCT/JP2021/014161
Publication Date:
October 07, 2021
Filing Date:
April 01, 2021
Export Citation:
Assignee:
IDEMITSU KOSAN CO (JP)
International Classes:
C08G64/04; C09D169/00; G03G5/05
Domestic Patent References:
| WO2010150888A1 | 2010-12-29 | |||
| WO2014192633A1 | 2014-12-04 |
Foreign References:
| US5145939A | 1992-09-08 | |||
| US5153300A | 1992-10-06 | |||
| US5204442A | 1993-04-20 | |||
| JPH0943873A | 1997-02-14 |
Other References:
GHOSH, SIPRA ET AL.: "Effect of introduction of cardo cyclohexylidene moiety on gas transport properties of fluorinated poly(arylene ether)s", EUROPEAN POLYMER JOURNAL, vol. 52, 2014, pages 207 - 217, XP028609032, DOI: 10.1016/j.eurpolymj. 2014.01.00 6
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
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