Water soluble rigid-rod polymer
US5312876A · kind A · utility
15Cited by
6References
6Claims
0Family size
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Key dates
| Filing date | Mar 12, 1993 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Mar 12, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Water-soluble rigid-rod aromatic heterocyclic polymers having repeating units of the formula: ##STR1## wherein n has a value of 0.05 to 1.00, M is an alkali metal, Q is a benzobisazole of the formula ##STR2## wherein X is --S-- or --O--, and R is selected from the group consisting of: ##STR3##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.