Polyurethane resin, producing method of polyurethane resin, and molded article
US11312815B2 · kind B2 · utility
1Cited by
3References
7Claims
0Family size
Assignee
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Key dates
| Filing date | May 9, 2018 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Jan 13, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/75
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyurethane resin is a reaction product of a polyisocyanate component containing a bis(isocyanatomethyl)cyclohexane with a macropolyol component having a number average molecular weight of above 400 and 5000 or less. The shore A hardness thereof is 80 or less, a temperature at which a storage elastic modulus E′ thereof shows 1×106 Pa is 200° C. or more, and a ratio (E′150/E′50) of a storage elastic modulus E′150 at 150° C. with respect to a storage elastic modulus E′50 at 50° C. is 0.1 or more and 1.4 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.