Novel liquid crystalline compounds and polymers
US4864033A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1985 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Nov 27, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/72
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to novel liquid crystalline compounds having the following formula: ##STR1## In the above formula, a is 1 or 2, or R.sub.1 and R.sub.2 may be virtually any chemical groups which will maintain the liquid crystalline properties of the resultant compound. The novel compounds of the present invention contain a biphenylcarboxylate ester moiety so as to define a new class of liquid crystalline compounds. The present invention further includes polymers made from the novel liquid crystalline compounds by attaching the compounds to a polymer backbone such as a polysiloxane backbone. Additionally, the present invention also contemplates methods for using such polymers as stationary phases in the chromatographic analysis of various chemical compounds, such as polycyclic aromatic hydrocarbons (PAH).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.