Spray dried, filled metallocene catalyst composition for use in polyolefin manufacture
US5648310A · kind A · utility
44Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | Jun 26, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/65927
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Metallocene-containing catalyst compositions that include inert filler, a method for their preparation, and a method for their use in production of polyolefins are disclosed and claimed. The catalyst compositions contain solid particles of a mixture comprising a) a metallocene catalyst; b) a cocatalyst capable of activating said metallocene catalyst; and c) particulate filler material having an average particle size of less than about 10 micrometers that is unreactive with the metallocene catalyst and the cocatalyst. They are prepared by spray drying a slurry of the constituents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.