Thermotropic liquid crystalline polyester from 2,5-dihydroxybenzophenone
US4952661A · kind A · utility
1Cited by
3References
10Claims
0Family size
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Key dates
| Filing date | Dec 6, 1989 |
| Grant date | Aug 28, 1990 |
| Priority date | — |
| Expiry date | Dec 6, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K19/3809
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Thermotropic liquid crystalline polyesters which can be processed in the molten state containing moieties derived from a dicarboxylic aromatic acid and 2,5-dihydroxybenzophenone eventually in a mixture with a substituted hydroquinones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.