Diaminobenzene derivatives and polyimides prepared therefrom
US5861534A · kind A · utility
4Cited by
0References
9Claims
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Key dates
| Filing date | Sep 10, 1996 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Sep 10, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A diaminobenzene derivative of the formula (I): ##STR1## wherein each of P and Q which may be the same or different from each other, is a single bond, or a bivalent organic group selected from the group consisting of --O--, --COO-- and --CONH--, R.sub.1 is a C.sub.2-22 straight chain alkylene group, and R.sub.2 is a cyclic group selected from the group consisting of an aromatic ring, an aliphatic ring, a heterocyclic ring and substituted forms of such rings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.