Dihydroxy-pendant rigid-rod benzobisazole polymer
US5041522A · kind A · utility
24Cited by
1References
2Claims
0Family size
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Key dates
| Filing date | Mar 23, 1990 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Mar 23, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K3/105
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There are provided novel rod-like heterocyclic aromatic polymers having repeating groups of the formula: ##STR1## wherein Y is --S--, --O-- or --NR--, R is --H, an alkyl group having 1 to 4 carbon atoms or an aromatic group having 1 or 2 aromatic rings, and the bullet symbol (.cndot.) indicates hydrogen bonding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.