Molybdenum and tungsten compounds, their manufacture and their use as catalysts in the stereospecific polymerization of unsaturated organic compounds
US4051172A · kind A · utility
1Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1975 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Jan 9, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F11/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Organic compounds of the formula: EQU [(H.sub.3-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-polymerizing unsaturated compounds such as butadiene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.