Method for recovery of catalyst components
US6410774B1 · kind B1 · utility
1Cited by
27References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Mar 30, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C68/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An integrated method is disclosed for removing and recovering a substantially water-soluble solvent and at least one metal from an organic reaction mixture comprising at least about 35% by weight aromatic hydroxy compound, which comprises the steps of: (i) contacting a reaction mixture at least once with aqueous acid, (ii) mixing the organic and aqueous phases in the presence of an oxygen source, (iii) separating the organic and aqueous phases wherein said solvent remains substantially in the organic phase; (iv) recovering metal species from the aqueous phase; and (v) recovering said solvent from the organic phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.