Process for polymerization of alpha-olefin and alpha-olefin polymer
US6376628B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1999 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | May 19, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for preparing an &agr;-olefin polymer comprising the step of polymerizing or copolymerizing an &agr;-olefin in the presence of a catalyst containing a solid catalyst constituent (A) which contains magnesium, titanium, a halogen element and an electron donor, an organoaluminum compound constituent (B), an organosilicon compound constituent (C) represented by the following general formula (1); and an organosilicon compound constituent (D) represented by the following general formulas (2) or (3) to prepare an &agr;-olefin polymerRnSi(OR)4−n  (1)wherein R is a hydrocarbon group having 1 to 8 carbon atoms, n is integer of 1 or 2; wherein R1 is a hydrocarbon group having 1 to 8 carbon atoms, R2 is a hydrocarbon group having 1 to 8 carbon atoms, a hydrocarbylamino group having 2 to 24 carbon atoms, or a hydrocarbylalkoxy group having 1 to 24 carbon atoms, R3N is a polycyclic amino group having 7 to 40 carbon atoms, wherein the carbon atoms and the nitrogen atom form a cyclic skeleton.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.