Liquid crystal polymer devices and materials
US6666989B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2000 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Aug 15, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2323/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymeric compounds of general formula (I) where X, X1, X2 are independently straight or branched chain C1-16 alkyl, halogen and H; (a) is a suitable mesogenic group; Z=single covalent bond, oxygen CO2, OCO; n=1-20; Y=oxygen, CO2, OCO, CH2, CHOH, CH2O; m=3-10,000. The compounds are liquid crystal polymers useful in liquid crystal devices, sensors, and in non-linear optical devices. The compounds are prepared by polymerization of the oxitane monomer to obtain the side-chain liquid crystalline polyoxitane compound. In this way the mesogenic groups are spaced on every fourth carbon atom in the polymer chain allowing greater mobility for the mesogenic group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.