Process for preparing halogenated metal chelates
US4150047A · kind A · utility
8Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1978 |
| Grant date | Apr 17, 1979 |
| Priority date | — |
| Expiry date | Mar 6, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C49/92
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to an improved process for preparing halogenated metal chelates of beta-dicarbonyl compounds, particularly the tris-brominated acetylacetonates. The process comprises passing elemental halogen through a solution comprising the metal chelate, an inert solvent in which the metal chelate has a solubility of at least 0.5 grams per 100 grams solvent and the halogenated product has a solubility of less than 1 gram per 100 grams solvent and a halogenated Lewis acid at a temperature from about 0.degree.-60.degree. C. thereby forming a halogenated metal chelate precipitate and then recovering the precipitate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.