Thermoplastic resin, optical film made therefrom, diol compound, diester compound
US12065541B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2021 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Feb 10, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2369/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermoplastic resin including a structural unit of formula (1): wherein A1 to A8 are each independently ═CH— or ═N—, and at least one of A1 to A8 is ═N—. R1 to R8 are each independently a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, or the like. At least two adjacent groups out of R1 to R8 are optionally bonded to each other to form a ring. R9 and R10 are each independently a direct bond or an optionally substituted alkylene group having 1 to 20 carbon atoms. X is an oxygen atom, a carbonyl group, or an optionally substituted amino group, and n is an integer of 1 to 5. A retardation film, a circularly polarizing plate containing the thermoplastic resin are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.