Process for co-polymerization of propylene and ethylene
US5789502A · kind A · utility
17Cited by
3References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Apr 22, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/905
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a process for control of desired properties in the polymer product. The catalyst system used in the process includes a supported metallocene catalyst precursor in combination with an oxyorganoaluminum. The process can be applied to the co-polymerization of propylene and ethylene. The randomness of the ethylene incorporation of the co-polymer product is increased as the amount of ethylene in the feed is increased. The amount of ethylene in the feed is up to 6 wt. % with a resulting amount of ethylene incorporated into the copolymer product up to 4 mole %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.