New molybdenum and tungsten compounds, their manufacture and their use as catalysts in the stereospecific polymerisation of unsaturated organic compounds
US3931242A · kind A · utility
4Cited by
1References
7Claims
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Key dates
| Filing date | Dec 28, 1973 |
| Grant date | Jan 6, 1976 |
| Priority date | — |
| Expiry date | Dec 28, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F36/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Organic compounds of the formula: EQU [(H.sub.3.sub.-n X.sub.n)C -- CO.sub.2 M (CO).sub.m (R).sub.p (L).sub.q ].sub.r In which X is a halogen atom, at least one X being fluorine, M is molybdenum or tungsten, R is a hydride ion or a hydrocarbon group, L is a Lewis base and m, n, p, q and r are integers, are manufactured from fluoracetic esters and molybdenum or tungsten carbonyl compounds, They are useful as catalysts for polymerizing or co-polymerising unsaturated compounds such as butadiene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.