Precursor of copolyphthalocyanine-imide lattice, preparation, and the resultant lattice
US4645821A · kind A · utility
9Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Jul 25, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1035
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aromatic polyimide compositions, precursors of copolyphthalocyanine-imides, heir manufacturing process and the resultant copolyphthalocyanine-imides, are described. These compositions may result for the reaction of 80.degree.-300.degree. C. of an aromatic tetra acid, diester-diacid, tetraester or dianhydride compound of formula: ##STR1## with an aromatic amino-dinitrile ##STR2## and optionally an aromatic diamine NH.sub.2 --Ar--NH.sub.2. A subsequent heating at 200.degree.-300.degree. C. provides, by cross-linking, copolyphthalocyanine-imides, which are hardened resins, stable at 250.degree.-300.degree. C. in continuous use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.