Electrooptical liquid crystal system
US5476611A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1993 |
| Grant date | Dec 19, 1995 |
| Priority date | — |
| Expiry date | Mar 31, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1334
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An electrooptical system containing a PDLC film is disclosed. The precursor of the PDLC film comprises PA1 (a) 30-85 wt. % of a liquid crystal mixture containing one or more compounds of the formula I ##STR1## wherein R, Z.sup.1, Z.sup.2, A.sup.1, A.sup.2, X.sup.2, X.sup.2, Q, n and Y are as defined herein, PA1 (b) 15-68 wt. % of the precursor of the polymer matrix at least comprising PA2 a component A containing at least 5 wt. % of one or more at least difunctional thiol monomers and/or oligomers, PA2 a component B containing at least 10 wt. % of one or more at least difunctional monomers and/or oligomers of the ene type, PA2 a component C containing at least 3 wt. % of one or more monofunctional monomers and/or oligomers of the ene type with a molar mass of less than 250 g/mol, PA2 optionally a component D containing polymerizable compounds other than ene-type or thiol-type compounds; and PA1 (c) 0.1-5 wt. % of a radical photoinitiator, with the mass ratios given under (a), (b) and (c) being related to the mass of the precursor of the PDLC film and the mass ratios of the components A, B and C relating to the mass of the precursor of the polymer matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.