Transition metal composition
US4136057A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1977 |
| Grant date | Jan 23, 1979 |
| Priority date | — |
| Expiry date | Aug 8, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/941
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A transition metal compound containing at least one .eta..sup.6 -arene is contacted with a solid material of the formula MX.sub.2 nL where X is a halogen atom, n is such that 0<n.ltoreq.6 and L is an organic Lewis Base compound. The transition metal compound can be a compound such as TiCl.sub.2.2AlCl.sub.3 -arene. The solid material is preferably of high surface area and this may be inherent in the solid material or can be achieved by a grinding procedure. The solid material may be MgCl.sub.2 2.0 C.sub.2 H.sub.5 OH; MgCl.sub.2 2.0 CH.sub.3 COOH or MgCl.sub.2 1.0 CH.sub.3 COOC.sub.2 H.sub.5. The solid material can be treated with a halogen-containing compound either before, during or after the contacting with the transition metal compound. The product of the contacting is useful either as catalyst for the polymerization of unsaturated hydrocarbon monomers or as a component of such a catalyst. When used as a component of an olefine polymerization catalyst, the transition metal product can be mixed with an organo-aluminium compound and and additional Lewis Base compound such as an ester. The catalyst can be used to polymerize or copolymerize olefine monomers to obtain a high yield of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.