Alkoxylation catalyst and method for producing the same, and method for producing alkylene oxide adduct using the catalyst
US6504061B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2000 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Jul 28, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/03
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides an alkoxylation solid catalyst with which an alkylene oxide adduct having a narrow adduct distribution can be produced while inhibiting formation of high molecular weight polyalkylene glycol having a molecular weight of about tens of thousands as a by-product. The alkoxylation catalyst comprises a metal oxide containing magnesium, aluminum, and at least one metal selected from the metals that belong to group VIA, group VIIA, and group VIII as a third component. The third component metal changes the structure of the active site in the catalyst, for example, by forming a metal oxide having a spinel-type structure with aluminum (e.g. when the third component metal is Mn, MnAl2O4 is formed), so that a side reaction of forming a high molecular weight polyalkylene glycol is inhibited.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.