Polymerization of ethylene oxide using metal cyanide catalysts
US6429342B1 · kind B1 · utility
29Cited by
8References
16Claims
0Family size
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Key dates
| Filing date | Jul 7, 2000 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Jul 7, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/0223
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ethoxylations of various initiator compounds are performed in the presence of metal cyanide catalysts. The catalysts surprisingly form a wide variety of polyether products that in most cases contain only small amounts of high molecular weight poly(ethylene oxide).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.