Process for the preparation of halophthalic anhydrides
US5233054A · kind A · utility
11Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1991 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jun 26, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/567
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Halophthalic anhydrides are prepared by the liquid phase reaction of a brominating agent with halogen substituted hexa- or tetra-hydrophthalic anhydrides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.