Use of tin derivatives as catalysts
US7115770B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2001 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | Mar 7, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C269/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns the use as catalyst for transforming carbamates of compounds corresponding to the general formula (I): —Sn (X) (X′) wherein: X′ is selected among chloride, bromide, iodide, thiocyanate radicals, sulphonate radicals, advantageously perfluorinated on the carbon bearing the sulphonate function; X is selected among the values of X′ and among radicals of formula Y-Z; Y is selected among the chalcogen groups, advantageously light (that is oxygen and sulphur); Z is selected in the group consisting of trisubstituted tin, monosubstituted zinc, and the oxygenated acid radicals after ignoring the OH function. The invention is applicable to the coating industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.