Method for providing an active ruthenium catalyst solution for the transvinylation of carboxylic acids
US9782752B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 23, 2015 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Mar 23, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method for providing a ruthenium catalyst solution which is active during the transvinylation of a surfactant vinyl ester with a surfactant carboxylic acid, comprising an Ru metal concentration of more than 0.5 wt. % based on the total weight of the ruthenium catalyst solution. The invention is characterized in that a) at least one ruthenium (III) halogenide with at least one inorganic or organic base, at least one surfactant vinyl ester, and at least one surfactant carboxylic acid is reacted at a temperature of 70° C. to 170° C.; b) the molar ratio of surfactant vinyl ester to surfactant carboxylic acid is 1:1.8 to 1.8:1; and c) the ruthenium (III) halogenide is used in a quantity of >0.5 wt. % of Ru metal based on the total weight of the surfactant vinyl ester and surfactant carboxylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.