Process for alkoxylating carbonyl-functionalized phenols using double metal cyanide catalysts
US5786514A · kind A · utility
7Cited by
7References
19Claims
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Key dates
| Filing date | Dec 18, 1996 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | Dec 18, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/2612
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for alkoxylating phenols is disclosed. The process comprises reacting a carbonyl-functionalized phenol with an alkylene oxide in the presence of a substantially non-crystalline double metal cyanide (DMC) catalyst. The process offers fast reaction times at low catalyst levels, reduced problems with condensation side reactions, and low-color, low-viscosity, low-polydispersity alkoxylated phenols. The process enables efficient preparation of alkoxylated carbonyl-functonalized phenols that are especially valuable in the surfactant industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.