Alkoxylation catalyst
US5012012A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1989 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Apr 25, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/269
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An alkoxylation catalyst for causing an alkylene oxide to react with an organic compound having one or more active hydrogen, comprising magnesium oxide modified by the addition of at least one metal ion selected from the group consisting of Al.sup.3+, Ga.sup.3+, In.sup.3+, Tl.sup.3+, Co.sup.3+, Sc.sup.3+, La.sup.3+, and Mn.sup.2+. In the presence of the catalyst, an addition polymerization reaction between the alkylene oxide and the organic compound having one or more active hydrogen such as an alcohol or phenol can be performed with only small amounts of unreacted material and byproducts, and the alkylene oxide adduct having a very narrow alkylene oxide adduct distribution can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.