Graft copolymers of poly(p-phenylene benzbisimidazole)
US5008346A · kind A · utility
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7References
3Claims
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Key dates
| Filing date | Apr 28, 1989 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Apr 28, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L79/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fusible, rod-like, graft copolymer having repeating units of the formula: ##STR1## wherein X is (--CH.sub.2 CH.sub.2 CONH--).sub.m or (--CH.sub.2 --CH(CH.sub.3)--O--).sub.n, wherein m has an average value of 5.0 to 35.0 and n has an average value of 1.0 to 30.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.