Title:
METHODS FOR PRODUCING AROMATIC THIOETHER SULFONE POLYMER, COMPOSITION, AND MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2023/243205
Kind Code:
A1
Abstract:
Provided are methods for producing an aromatic thioether sulfone polymer, an aromatic thioether sulfone polymer composition, and an aromatic thioether sulfone polymer molded article, which all have a high refractive index and have less coloring and high transparency. In further detail, this method for manufacturing an aromatic thioether sulfone polymer is characterized by polymerizing, in a hydrous sulfone-based solvent, a dihalo aromatic compound and (i) an alkali metal sulfide or (ii) an alkali metal hydrosulfide and an alkali metal hydroxide.
Inventors:
TSURUOKA CHISATO (JP)
Application Number:
PCT/JP2023/014955
Publication Date:
December 21, 2023
Filing Date:
April 13, 2023
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C08G75/0204; C08G75/20; C08L81/00
Foreign References:
| JPH0450246A | 1992-02-19 | |||
| JPH0268146A | 1990-03-07 | |||
| JPS61168629A | 1986-07-30 | |||
| JPH04275335A | 1992-09-30 | |||
| JP2017114923A | 2017-06-29 | |||
| JPH07252359A | 1995-10-03 |
Attorney, Agent or Firm:
ONO Takayuki (JP)
Download PDF: