Process for the production of polymer or copolymer of an olefin monomer
US4228262A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1979 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Apr 13, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/906
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A solid compound of a transition metal is ground in the presence of aluminum chloride; titanium tetrachloride and at least one specified organic sulphur-containing compound are added, the whole mixture is ground and the ground product is then washed with an aromatic liquid. The transition metal compound is typically titanium trichloride. The organic sulphur-containing compound can be a sulphone, a sulphonamide or a condensed ring system containing at least one heterocyclic sulphur atom. The organic sulphur-containing compound can be diphenylsulphone. The solid compound of the transition metal may be one which also includes aluminum chloride. The quantities of materials added to the transition metal compound are, for each mole of the transition metal compound, 0.10 up to 2.50 moles of the organic sulphur-containing compound, 0.01 up to 0.50 mole of titanium tetrachloride and 0.01 up to 2.50 moles of aluminum chloride. The ground and washed product can be used as a component of an olefine polymerization catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.