Process for preparing highly active double metal cyanide catalysts and their use in the synthesis of polyether polyols
US9221947B2 · kind B2 · utility
2Cited by
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9Claims
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Key dates
| Filing date | May 16, 2012 |
| Grant date | Dec 29, 2015 |
| Priority date | — |
| Expiry date | Jul 6, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/845
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a process of preparing a double metal cyanide (DMC) complex catalyst with an improved catalytic activity useful for epoxide polymerization. It also relates to the DMC catalyst obtainable by said process, as well as to polyether polyols prepared by a polymerization reaction using said DMC catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.