Invention Grant
- Patent Title: Two-component curable composition for manufacturing thermoplastic polyurethane resin, thermoplastic polyurethane resin, and fiber-reinforced resin
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Application No.: US17053476Application Date: 2019-04-09
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Publication No.: US11891511B2Publication Date: 2024-02-06
- Inventor: Takuma Nishimura , Yoshinori Yamada , Kei Oikawa
- Applicant: DAI-ICHI KOGYO SEIYAKU CO., LTD.
- Applicant Address: JP Kyoto
- Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.
- Current Assignee: DAI-ICHI KOGYO SEIYAKU CO., LTD.
- Current Assignee Address: JP Kyoto
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP 18090400 2018.05.09
- International Application: PCT/JP2019/015425 2019.04.09
- International Announcement: WO2019/216088A 2019.11.14
- Date entered country: 2020-11-06
- Main IPC: C08L75/08
- IPC: C08L75/08 ; C08G18/12 ; C08G18/32 ; C08G18/48 ; C08G18/76 ; C08J5/04 ; C08K7/26

Abstract:
Provided are a two-component curable composition, for manufacture of a thermoplastic polyurethane resin, that exhibits low mixing viscosity and high glass transition temperature after curing, a thermoplastic polyurethane resin that is a cured product thereof, and a fiber-reinforced resin including the thermoplastic polyurethane resin.
The two-component curable composition for manufacture of a thermoplastic polyurethane resin is a two-component curable composition including a polyol component including a diol (A) and a polyisocyanate component including a diisocyanate (B). The diol (A) includes a diol (A-1) having an aromatic ring and having a molecular weight of 200 to 700 and a diol (A-2) having no aromatic ring and having a molecular weight of 500 or less. The ratio ((A-1)/((A-1)+(A-2))) of the mass of the diol (A-1) to the total mass of the diol (A-1) and the diol (A-2) is (10/100) to (75/100).
The two-component curable composition for manufacture of a thermoplastic polyurethane resin is a two-component curable composition including a polyol component including a diol (A) and a polyisocyanate component including a diisocyanate (B). The diol (A) includes a diol (A-1) having an aromatic ring and having a molecular weight of 200 to 700 and a diol (A-2) having no aromatic ring and having a molecular weight of 500 or less. The ratio ((A-1)/((A-1)+(A-2))) of the mass of the diol (A-1) to the total mass of the diol (A-1) and the diol (A-2) is (10/100) to (75/100).
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