Method of supporting a catalyst on polyolefins
US4407727A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1982 |
| Grant date | Oct 4, 1983 |
| Priority date | — |
| Expiry date | Oct 8, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/904
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is provided for transforming a polyolefin powder into a suitable substrate for the preparation of transition metal catalysts. A powder polyolefin such as polyethylene or polypropylene is treated with a solution of a magnesium alkyl. The solvent is removed by any suitable procedure such as vacuum drying. The powder is then treated with gaseous HCl or other agent suitable for decomposition of the magnesium alkyl. The powder thus prepared is an effective support for preparing high efficiency catalysts such as taught in U.S. Pat. No. 4,136,058. These catalysts give polymers of increased particle size. Polyolefin powder in the absence of such treatment is not effective as a catalyst support and will not give polymers of increased particle size.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.