Photopolymerizable oxetane derivative and liquid-crystal composition containing it
US7407691B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 21, 2005 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Dec 5, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Provided are a liquid-crystal compound and a liquid-crystal composition containing the compound, of which the advantages are that they show nematic hybrid orientation on a rubbed TAC substrate, they are polymerizable in open air and they readily give a polymer having a high degree of polymerization even when exposed to a relatively small total quantity of light. The films formed by photopolymerizing them keep nematic hybrid orientation. The compound is represented by formula (1):wherein R1 is a hydrogen or an alkyl; R2 is a hydrogen, —OCF3, etc.; A1 is a 1,4-phenylene, etc.; A2 and A3 are independently a 1,4-cyclohexylene, a 1,4-phenylene, etc.; X1 is a single bond, —O—, etc.; X2 and X3 are independently a single bond, —COO—, —C≡C—, —CONH—, etc.; m is an integer of from 0 to 20; and n is 1 or 0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.