Polymerization method
US4446288A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1982 |
| Grant date | May 1, 1984 |
| Priority date | — |
| Expiry date | Jan 4, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An olefin polymerization and copolymerization catalyst active in the presence of an alkyl aluminum cocatalyst is prepared by mixing, in the presence of a solvent, particles of a silica or alumina material having reactive surface groups, and a magnesium alkyl or a magnesium alkyl-aluminum alkyl complex of the general formula (MgR.sub.2).sub.m (AlR'.sub.3).sub.n where R and R' are alkyl groups and m/n is between about 0.5 and 10, inclusive, to form a hydrocarbon insoluble reaction product which is then mixed, in the presence of a solvent, with an electron-donating alcohol and a titanium, vanadium or zirconium halide, oxyhalide or alkoxyhalide, followed by removal, such as by evaporation, of the solvent to give a dry, granular, solid catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.