Liquid-crystal polymer, laminated material, liquid-crystal polymer solution, and method of forming liquid-crystal polymer film
US11572438B2 · kind B2 · utility
1Cited by
4References
18Claims
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Key dates
| Filing date | Jul 1, 2020 |
| Grant date | Feb 7, 2023 |
| Priority date | — |
| Expiry date | Jan 25, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2219/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A liquid-crystal polymer includes at least one repeating unit having a spiro structure, and the repeating unit occupies 1 mol % to 20 mol % of the liquid-crystal polymer. The liquid-crystal polymer is composed of the following repeating units: 1 mol % to 20 mol % of 10 mol % to 35 mol % of 10 mol % to 35 mol % of 10 mol % to 50 mol % of and 10 mol % to 40 mol % of AR1 is wherein each of ring R and ring S is independently a C3-20 ring, ring R and ring S share a carbon atom, and each of K1 and K2 is independently a C5-20 conjugated system. Each of AR2, AR3, AR4, and AR5 is independently AR6 or AR6—Z—AR7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.