Methods and blends for controlling rheology and transition temperature of liquid crystals
US7108801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2002 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Jan 23, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/935
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for producing a blend comprising randomly substituted mesogens comprising: providing one or more platform molecules have the following general structure:wherein at least one member selected from the group consisting of X and Y comprises one or more spacer groups; R2 is a bulky organic group whereby, when both X and Y are reacted with polymerizable groups to produce polymerizable mesogens, R2 provides sufficient steric hindrance to achieve a nematic state at room temperature while suppressing crystallinity of the polymerizable mesogens at room temperature; and, R1 and R3 are selected from groups less bulky than R2; and independently substituting at least one member selected from the group consisting of X and Y with a polymerizable group, thereby producing a blend of randomly substituted mesogens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.