Crosslinkable rigid-rod aromatic heterocyclic polymer
US5066769A · kind A · utility
2Cited by
1References
5Claims
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Key dates
| Filing date | Mar 23, 1990 |
| Grant date | Nov 19, 1991 |
| Priority date | — |
| Expiry date | Mar 23, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G75/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is provided a para-ordered, rigid-rod aromatic heterocyclic copolymer having repeating groups of the formula: EQU --Ba--Ar).sub.x (Ba--Fl).sub.1.0-x wherein x has a value of 0.50 to 0.99, Fl is a 2,7-fluorene moiety, Ar is a para-ordered arylene group and Ba is a benzazole group of the formula: ##STR1## wherein Y is S or O.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.