Copolymerization of ethylene and an alpha-olefin having 6 carbon atoms in a fluidized bed
US4642328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1985 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Jan 3, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/904
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Process for the preparation of copolymers of ethylene and an alpha-olefin having 6 carbon atoms with a density comprised between 0.910 and 0.940, involving a copolymerization of ethylene and an alpha-olefin having 6 carbon atoms in the gas phase by means of a fluidized bed, in the presence of a catalyst system comprising on the one hand a co-catalyst consisting of at least one organo-metallic compound of a metal of Groups II and III of the Periodic Table of Elements and on the other hand a supported catalyst comprising a special support based essentially on magnesium chloride and optionally aluminium chloride, on which support there has been precipitated a derivative of a transition metal of Groups IV, V and VI of the Periodic Table of elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.