Electron donors
US6124507A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1997 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Dec 10, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/081
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel compositions of the structure ##STR1## wherein R.sup.1 and R.sup.2 are each an alkoxy group which may be the same or different and have from one to ten carbon atoms, and R.sup.3 -R.sup.6 are each individually, hydrogen, hydrocarbyl, hydrocarboxy, nitro, a silyl group or a halogen, with the provisos that if either R.sup.1 or R.sup.2 are methoxy, then at least one of R.sup.3 -R.sup.6 is not hydrogen, if R.sup.1 and R.sup.2 are both ethoxy, then at least one of R.sup.3 -R.sup.6 is not hydrogen, and R.sup.1 and R.sup.2 cannot both be methoxy, are taught herein, which may be used as electron donors, either internal or external, for catalysts used in the polymerization of olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.