Production process of pre-polymerized polymerization catalyst component and addition polymer
US8273677B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2011 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Apr 4, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2410/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A production process of a pre-polymerized catalyst component, comprising steps of (i) contacting a transition metal compound defined by formula [1], an activation agent, an organometallic compound defined by formula [2], and an optional organoaluminum compound with one another, thereby forming a primary polymerization catalyst, and (ii) pre-polymerizing an olefin in the presence of the primary polymerization catalyst; and a process for producing an addition polymer, comprising a step of polymerizing an addition polymerizable monomer in the presence of a pre-polymerized catalyst component produced by the above production process, or in the presence of the pre-polymerized catalyst component and an organoaluminum compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.