Palladium catalyst systems for selective hydrogenation of dienes
US5475121A · kind A · utility
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Key dates
| Filing date | Sep 22, 1994 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Sep 22, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/824
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst precursor is provided that is useful in the selective hydrogenation of olefinic unsaturation in polymers or copolymers. The precursor comprises a palladium salt that is complexed with a complexing agent selected from the group consisting of organic phosphates, dialkylidene acetones, and tetraalkyl ammonium hydroxides. The catalyst precursor may be used in batch, step-wise addition, or continuous systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.