Title:
熱可塑性ポリヒドロキシウレタン樹脂の製造方法
Document Type and Number:
Japanese Patent JP6710662
Kind Code:
B2
Abstract:
To provide a method for producing a thermoplastic polyhydroxyurethane resin capable of practical application, the method realizing performing a reaction of a 5-membered cyclic carbonate and an amine compound, and the method contributing to industrial spread of the thermoplastic polyhydroxyurethane resin which has excellent mechanical characteristics, is useful, and can be used as a binder of various products and the like.SOLUTION: Provided is a method for producing a thermoplastic polyhydroxyurethane resin, comprising: a step [1] of reacting a compound having a 5-membered cyclic carbonate group and a compound having an amino group in a solvent to obtain a preliminary reaction liquid (A) having a weight average molecular weight of 3000 to 20000; and a step [2] of obtaining a polyhydroxyurethane resin by supplying the preliminary reaction liquid (A) under a heated reduced pressure condition of 80 to 180°C and 10 to 200 torr and performing concentration of a substrate of the preliminary reaction liquid (A) by formation of a liquid film and evaporation, further polymerization, and solvent removal.SELECTED DRAWING: None
Inventors:
Kenichi Takahashi
Chiya Kimura
Uruno Manabu
T. Muto
Masashi Tanigawa
Akiko Minami
Chiya Kimura
Uruno Manabu
T. Muto
Masashi Tanigawa
Akiko Minami
Application Number:
JP2017138900A
Publication Date:
June 17, 2020
Filing Date:
July 18, 2017
Export Citation:
Assignee:
Dainichi Seika Kogyo Co., Ltd.
International Classes:
C08G71/04
Domestic Patent References:
| JP2015229714A |
Attorney, Agent or Firm:
Toshieko Kondo
Chongqing Sugano
Keita Takeyama
Kaoru Okada
Chongqing Sugano
Keita Takeyama
Kaoru Okada