Carbonates carrying cyclic carbonate groups
US4423235A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1980 |
| Grant date | Dec 27, 1983 |
| Priority date | — |
| Expiry date | Apr 14, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to new industrial products of the general formula ##STR1## a process for the manufacture of these products and their application in hydrometallurgy. According to the invention, R is in particular an alkyl, cycloalkyl, aryl, aralkyl, carboxylate, polyoxyethylene, polyester or polycarbonate group. The process consists in reacting an alcohol or a polyol, ROH, with 2,3-dioxycarbonylpropyl chloroformate, at between -10.degree. and +20.degree. C., in the presence of an acid acceptor. Application: the compounds according to the invention are extraction agents for hydrometallurgy, which can be used in dilute solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.