Preparation of alkylene carbonates from olefins
US4224223A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1979 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Aug 23, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D317/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of a cyclic alkylene carbonate ester which comprises reacting in a liquid phase a cyclic or linear olefin having from 2 to 15 carbon atoms with carbon dioxide at a temperature of from 50 to 160.degree. C., at a total pressure of from 200 to about 2,000 psig and a pH value of between about 4 and 8, in the presence of oxygen or an oxygen-containing gas and a catalytic amount of a mixture of (a) iodine or an iodide of a metal selected from Groups IA, IB, IIA, IIB, VB, VIIB and VIII of the Periodic Table of Elements and (b) a catalytic iron compound, copper compound of mixture thereof deposited on an inert supporting material, and recovering resulting cyclic alkylene carbonate ester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.