Title:
METHOD FOR PRODUCING CARBOXY-GROUP-CONTAINING RESIN AND METHOD FOR CONTROLLING MOLECULAR WEIGHT OF CARBOXY-GROUP-CONTAINING RESIN
Document Type and Number:
WIPO Patent Application WO/2022/091951
Kind Code:
A1
Abstract:
Provided are a method for producing a carboxy-group-containing resin that permits control of the molecular weight and has excellent performance stability between production lots, and a method for controlling the molecular weight of a carboxy-group-containing resin. The method for producing a carboxy group-containing resin of the present invention has a step A that reacts an epoxy compound (a) and an unsaturated monobasic acid (b) in an organic solvent and obtains a first reaction product A-containing solution, a step B that controls the water content of the first reaction product A-containing solution to obtain a second reaction product A-containing solution, and a step C that adds a polybasic acid dianhydride (c) and a polybasic acid monoanhydride (d) to the second reaction product A-containing solution and reacts to obtain a carboxy-group-containing resin.
Inventors:
NAKATANI KAZUHIRO (JP)
OGAWA KATSUHIRO (JP)
KOBATA ATSUSHI (JP)
MIYAZAKI TAKAHIRO (JP)
OGAWA KATSUHIRO (JP)
KOBATA ATSUSHI (JP)
MIYAZAKI TAKAHIRO (JP)
Application Number:
PCT/JP2021/038983
Publication Date:
May 05, 2022
Filing Date:
October 21, 2021
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C08F290/06; C08G59/17; C08G63/56; C09D11/102; G02B5/20; G03F7/027
Foreign References:
| JP2010248394A | 2010-11-04 | |||
| JP2020117570A | 2020-08-06 | |||
| JPH0570558A | 1993-03-23 | |||
| JP2000336116A | 2000-12-05 |
Attorney, Agent or Firm:
TAZAKI Akira et al. (JP)
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