Process for the polymerization of ethylene or .alpha.-olefins and catalyst therefor
US4158088A · kind A · utility
4Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1977 |
| Grant date | Jun 12, 1979 |
| Priority date | — |
| Expiry date | Jul 15, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/906
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymerization of ethylene or .alpha.-olefins is carried out with use of a catalyst comprising a modified titanium component obtained by pulverizing the starting titanium component of Ziegler solid catalysts and subjecting the resultant to a modification treatment through contact with an inert organic solvent or a mixture thereof with a modifier, and an organoaluminum component. The pulverized product of the starting titanium component is pulverized together with an organoaluminum compound and a small amount of ethylene or .alpha.-olefins thereby controlling the particle size distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.