Highly active double metal cyanide catalysts
US5482908A · kind A · utility
249Cited by
10References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1994 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Sep 8, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/96
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Highly active double metal cyanide (DMC) catalysts are disclosed. The catalysts comprise a DMC complex, and organic complexing agent, and from about 5 to about 80 wt. %, based on the amount of catalyst, of a polyether having a number average molecular weight greater than about 500. A method of preparing the catalysts is also disclosed. The catalysts are easy to prepare, have exceptional activity, and are readily removed, if desired, from polymer products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.