Compositions of polyaryloxypyridine oligomers with phthalonitrile end groups, their preparation and use for manufacturing polyaryloxypyridine co-phthalocyanine lattices
US4764578A · kind A · utility
3Cited by
8References
15Claims
0Family size
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Key dates
| Filing date | Sep 16, 1986 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Sep 16, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2650/64
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The disclosed compositions of polyaryloxypyridine oligomers with phthalonile end groups are obtained by formation of a composition of polyaryloxypyridine oligomers with alkali phenolate end groups, followed with the reaction of said composition with 4-nitrophthalonitrile. Their average polycondensation degree may range from 1 to 50. They can be used in combination with a co-reactant derived from benzhydrol and containing one or two ortho-dinitrile functional groups, to constitute polyaryloxypyridine co-polyphthalocyanine lattices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.