Catalyst recovery in the carbonylation of chlorobutenes to pentenoyl chloride
US5399753A · kind A · utility
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Key dates
| Filing date | May 4, 1994 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | May 4, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Palladium catalyst residue is recovered from still heels by treating the still heels with hydrochloric acid, converting the palladium component to crotyl palladium chloride, and using the crotyl palladium chloride as catalyst in the carbonylation of chlorobutene to 3-pentenoyl chloride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.