Title:
ポリアリレート樹脂の製造方法及び電子写真感光体の製造方法
Document Type and Number:
Japanese Patent JP6677206
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a polyarylate resin which reduces a residual amount of a quaternary ammonium salt as a polymerization catalyst and can enhance a molecular weight of the polyarylate resin.SOLUTION: A method for producing a polyarylate resin includes a synthesis step and a cleaning step, where the synthesis step includes subjecting a bisphenol derivative and an aromatic dicarboxylic acid derivative to interfacial polymerization using a polymerization catalyst, and the cleaning step includes cleaning an organic phase with cleaning water for multiple times to obtain a polyarylate resin. The polymerization catalyst is a quaternary ammonium salt represented by [(CH)YN]X. (Xrepresents a halide ion, a hydroxide ion or a hydrogen sulfate ion; and Y represents a propyl group, a butyl group or a benzyl group.) An absorbance of the polyarylate resin is 0.100 or less. (Absorbance is measured by filling a cell having an optical path length of 1.00 cm with 9.1 mass% of tetrahydrofuran solution based on polyarylate resin, and using light at a wavelength of 390 nm.)SELECTED DRAWING: Figure 1
Inventors:
Jun Higashi
Kensuke Kojima
Kensuke Kojima
Application Number:
JP2017070143A
Publication Date:
April 08, 2020
Filing Date:
March 31, 2017
Export Citation:
Assignee:
Kyocera Document Solutions Co., Ltd.
International Classes:
C08G63/87; C08G63/185; C08G63/189; C08G63/195; C08G63/79; G03G5/00; G03G5/05
Domestic Patent References:
| JP49061280A | ||||
| JP58157819A | ||||
| JP9124781A | ||||
| JP11209687A | ||||
| JP2000302853A | ||||
| JP2010096929A | ||||
| JP2017049517A |
Attorney, Agent or Firm:
Hiroyuki Maei