Fiber-reinforced polyurethane composite plates
US9416247B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Feb 1, 2012 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Feb 15, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Fiber-reinforced polyurethane composite plates having a thickness of at least 12 mm contains at least 20% by weight of reinforcing fibers embedded in a polyurethane polymer matrix, which polyurethane polymer matrix has a calculated molecular weight between crosslinks of from 450 to 2500. The composite plates have excellent load-bearing properties and exhibit small permanent sets upon loading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.