Liquid crystalline polymer
US4812548A · kind A · utility
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11Claims
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Inventors
Key dates
| Filing date | Mar 31, 1988 |
| Grant date | Mar 14, 1989 |
| Priority date | — |
| Expiry date | Mar 31, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/3847
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A thermotropic polymer, having an optically anisotropic phase, comprises recurring units of the formula (1) ##STR1## wherein R is a substantially linear organic substituent having a bulkiness factor greater than about 4 .ANG., and wherein X is a direct bond, --O--CH.sub.2).sub.n (n being an integer of 1 to 8) or --OCH.sub.2 CH.sub.2).sub.m (m=1, 2 or 3). The thermotropic polymer has a molecular weight distribution (Mw/Mn) of less than about 1.4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.