Title:
POLYURETHANE RESIN, ELASTIC MOLDING, METHOD FOR PRODUCING POLYURETHANE RESIN, AND PREPOLYMER COMPOSITION
Document Type and Number:
Japanese Patent JP2023046114
Kind Code:
A
Abstract:
To provide a polyurethane resin which has excellent mechanical strength and can suppress formation of air bubbles, and to provide an elastic molding, a method for producing the polyurethane resin, and a prepolymer composition which enables production of the polyurethane resin.SOLUTION: A polyurethane resin contains a reaction product of a prepolymer composition and a chain extender, wherein the prepolymer composition contains an isocyanate group terminal prepolymer and an isocyanate monomer, the isocyanate group terminal prepolymer contains a reaction product of a polyisocyanate component containing bis(isocyanatomethyl)cyclohexane, and a polyol component containing macropolyol, the isocyanate monomer contains bis(isocyanatomethyl)cyclohexane, a weight average molecular weight of the isocyanate group terminal prepolymer is 7,000 or more and 14,000 or less, and isocyanate group concentration of the prepolymer composition is 15.0 mass% or more and 20.0 mass% or less.SELECTED DRAWING: None
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Inventors:
MAEKAWA KAZUHIRO
Application Number:
JP2021154826A
Publication Date:
April 03, 2023
Filing Date:
September 22, 2021
Export Citation:
Assignee:
MITSUI CHEMICALS INC
International Classes:
C08G18/72; C08G18/10; C08G18/65; C08G18/75; C08G18/78
Attorney, Agent or Firm:
Hiroyuki Okamoto
Shinichi Uda
Shinichi Uda
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