Polymerization catalyst and method
US4359403A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1981 |
| Grant date | Nov 16, 1982 |
| Priority date | — |
| Expiry date | Apr 13, 2001 |
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 treated with a fluorine compound and with a compound of magnesiumhydrocarbyl or a complex of the general formula (MgR.sub.2).sub.m (AlR.sub.3 ').sub.n where R and R' are alkyl or aryl 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 a titanium, vanadium or zirconium halide, oxyhalide or alkoxyhalide, followed by separation of the solvent. The disclosure also includes a method of making such catalysts and a method of making polymers of one or more 1-olefins by the use of these catalysts under polymerizing conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.