Process for the preparation of copolymers of ethylene with alpha-olefins
US6448350B1 · kind B1 · utility
31Cited by
2References
17Claims
0Family size
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Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Sep 10, 2002 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/65912
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ethylene based copolymers having high molecular weights, narrow molecular weight distributions, and a very good homogeneous distribution of the comonomer units can be obtained in high yields at temperatures of industrial interest, by carrying out the polymerization reaction in the presence of metallocene catalysts comprising particular bridged bis-indenyl compounds substituted in the 3-position on the indenyl groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.