Catalyst for the polymerization of olefins
US4686200A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1986 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Nov 18, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F10/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A catalyst for the polymerization of olefins which comprises: PA0 (A) a solid catalyst component prepared by bringing a co-ground product of a substance (a) obtained by reacting magnesium with at least two molar proportion of an alkyl monohalide in the absence of a solvent but in the presence of iodine and a dialkyl phthalate (b) and optionally existing titanium tetrachloride (c) into contact with titanium tetrachloride in the presence or absence of an aromatic hydrocarbon and/or halohydrocarbon. PA0 (B) a 2,6-dialkyl- or 2,2,6,6-tetraalkyl-piperidine derivative, and PA0 (C) an organoaluminum compound selected from a trialkyl aluminum, a dialkylaluminum halide and an alkylaluminum dihalide, as well as the solid catalyst component (A) for the catalyst. This catalyst characterized by the use of the specific solid catalyst component exhibits a high polymerization activity combined with stereospecific performance over a prolonged polymerization time and is free from any problem of corrosion and odor in the resultant polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.