Preparation of urethane and carbonate products
US5200547A · kind A · utility
11Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1990 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Sep 4, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for preparing urethanes and carbonates from an amine or an alcohol, carbon dioxide and an allyl halide. The amine or alcohol is reacted with carbon dioxide to form the ammonium carbamate or carbonate salt which is then reacted with a palladium tertiary phosphine catalyst complex of an allyl halide. Polymer products can also be prepared utilizing this process or utilizing the resulting urethanes and carbonates under standard polymerization conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.