Method for preparing aromatic compounds
US6048986A · kind A · utility
6Cited by
7References
3Claims
0Family size
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Key dates
| Filing date | Jun 17, 1998 |
| Grant date | Apr 11, 2000 |
| Priority date | — |
| Expiry date | Jun 17, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/1071
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for preparing aromatic compounds including 1,4-difluoropyromellitic dianhydride represented by formula (12): ##STR1## and 1,4-difluoropyromellitic acid represented by formula (15): ##STR2## by dehydrating or hydrolyzing and dehydrating precursors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.