Complexing agent-modified hexacyanometallate hexanitrometallate catalysts
US6376645B1 · kind B1 · utility
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19Claims
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Key dates
| Filing date | May 19, 2000 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | May 19, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J27/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Metal [hexacyanometallate hexanitrometallate] complexes are useful alkylene oxide polymerization catalysts. The metal is any that forms a precipitate with hexacyanometallate and hexanitrometallate groups. These catalysts are made from less expensive raw materials than the common zinc hexacyanocobaltate catalysts, and provide short induction periods and in many cases more controlled exotherms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.