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Title:
PREPOLYMER COMPOSITION, POLYURETHANE RESIN, ELASTIC MOLDED ARTICLE, AND PRODUCTION METHOD OF PREPOLYMER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2023/140229
Kind Code:
A1
Abstract:
A prepolymer composition that contains an isocyanate group-terminated prepolymer. The isocyanate group-terminated prepolymer is a reaction product of a polyisocyanate component containing 1,4-bis(isocyanatomethyl)cyclohexane and a polyol component containing a polycarbonate polyol. The 1,4-bis(isocyanatomethyl)cyclohexane contains a trans compound at a ratio of 60 mol% or more. The viscosity (V1) of the polycarbonate polyol at 80°C is 4000 mPa s or less. The viscosity (V2) of the prepolymer composition at 80°C is 4000 mPa s or less. The isocyanate group concentration of the prepolymer composition is 8.0 mass% or more and less than 13.0 mass%.

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Inventors:
MAEKAWA KAZUHIRO (JP)
HASHIGUCHI TAKUYA (JP)
Application Number:
PCT/JP2023/001096
Publication Date:
July 27, 2023
Filing Date:
January 17, 2023
Export Citation:
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Assignee:
MITSUI CHEMICALS INC (JP)
International Classes:
C08G18/10; C08G18/44; C08G18/65; C08G18/75
Domestic Patent References:
WO2019069802A12019-04-11
WO2017038910A12017-03-09
WO2018207807A12018-11-15
WO2015046369A12015-04-02
WO2019230541A12019-12-05
Foreign References:
JP2019001868A2019-01-10
JP2019123871A2019-07-25
JP2016519696A2016-07-07
JP2011148886A2011-08-04
JP2019137756A2019-08-22
JP2019137755A2019-08-22
Attorney, Agent or Firm:
IKUMI PATENT ATTORNEYS OFFICE (JP)
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