Process for alkoxylation in the presence of rare earth triflimides
US6376721B1 · kind B1 · utility
6Cited by
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15Claims
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Key dates
| Filing date | Jan 19, 2001 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2231/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a process for making alkoxylates of organic compounds. The process requires a) providing an active hydrogen organic compound having 1 to 22 carbon atoms and b) alkoxylating the organic compound with an alkylene oxide in the presence of a catalytically effective amount of a rare earth triflimide of the following formula:R1R2R3Xwherein X is a lanthanide; R1, R2, and R3 each being independently a triflimide group of the following formula:N(SO2Z)2wherein Z is CnF2n+1; C being a carbon atom; F being a fluorine atom; and n being an integer from 1 to 15.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.