Title:
BLOCK COPOLYMER PRODUCTION METHOD AND BLOCK COPOLYMER
Document Type and Number:
WIPO Patent Application WO/2021/182348
Kind Code:
A1
Abstract:
The present invention relates to a block copolymer production method comprising a step in which an aromatic polysulfone (a) having at least one Cl atom at a terminal is prepared in advance, and a step in which the aromatic polysulfone (a) and a polyoxyalkylene compound (b) having at least one hydroxy group at a terminal are reacted in a solvent, wherein the proportion of the solvent that forms an azeotropic mixture with water relative to the total amount of the solvent used in the reaction is 0-20 mass%.
Inventors:
ITO KAZUYUKI (JP)
SUMI YURIKA (JP)
SUMI YURIKA (JP)
Application Number:
PCT/JP2021/008797
Publication Date:
September 16, 2021
Filing Date:
March 05, 2021
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C08G81/00; C08G65/40; C08G75/23
Foreign References:
| JP2015227391A | 2015-12-17 | |||
| JP2004075741A | 2004-03-11 | |||
| JP2000239385A | 2000-09-05 | |||
| JP2010058066A | 2010-03-18 | |||
| JP2001525856A | 2001-12-11 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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