Main catalyst component for olefin polymerization, a process for preparing the same and a catalyst comprising the same
US7985814B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 6, 2007 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Jun 20, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides a main catalyst component for olefin polymerization, which is prepared by a process comprising the steps of: (i) reacting a magnesium compound in nascent state having a rational formula (RMgX)y(MgX2), in which R is an alkyl having from 3 to 12 carbon atoms, X is a halogen, and y is a value of from 0.02 to 1, with an alcohol having a formula R1OH, in which R1 is an alkyl having from 2 to 12 carbon atoms, to form a homogeneous solution; (ii) reacting an alkyl magnesium compound having a formula R′MgR″, in which R′ and R″ are independently an alkyl having from 1 to 20 carbon atoms, with the homogeneous solution formed in the step (i) to form a magnesium complex; (iii) reacting the magnesium complex with a halogenating agent in the presence of a silica, to form a magnesium halide-containing intermediate product; and (iv) reacting the magnesium halide-containing intermediate product from the step (iii) with a titanium compound having a formula Ti(OR2)mCl4-m, in which R2 is an alkyl having from 1 to 10 carbon atoms and m is an integer of from 0 to 4, to form a titanium-containing main catalyst component. The main catalyst component of the invention, when us…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.