Precursor for preparing an optical material, method and optical components obtained with same and uses thereof
US7270769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2001 |
| Grant date | Sep 18, 2007 |
| Priority date | — |
| Expiry date | Feb 26, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/38
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A precursor for the preparation of a material with optical properties modifiable under the action of at least one external parameter, comprising a component A constituted by polymerizable monomers or oligomers, a component B comprising one or several liquid crystals with low molecular weights or polymers and having a type of molecular order that is nematic, cholesteric or smectic or having polymorphism, andat least one surface agent C whose molecules have an affinity both for component A and for component B, and comprising simultaneously one or several chemical groups that can attach chemically to the constituents of component A, and one or several chemical groups comprising a mesogenic portion compatible with the mesomorphic phase of component B, so as to control the interfacial properties between components A, and B during polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.