Catalyst for the production of olefin polymers
US6723675B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 2000 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | May 25, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2420/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A catalyst composition for the polymerization of olefins is provided which comprises a catalyst compound and a co-catalyst or a support material or both a co-catalyst and a support material, wherein the catalyst compound comprises a transition metal of Group 4, 5 or 6, an organic compound containing at least one lone pair of electrons, a divalent radical and a Lewis basic group having the following formula:—C(R7)=Z1R8,  (i)wherein R7 and R8 are each independently selected from the group consisting of hydrogen and C1-C8 hydrocarbyl groups, and wherein R7 and R8 are not linked or are linked to form a saturated or unsaturated ring; andZ1 is a nitrogen atom or a phosphorus atom, which bonds to M; or  wherein:Z2 is an oxygen atom, a sulphur atom or a selenium atom, which bonds to the transition metal compound; and R9, R10 and R11 are each independently selected from the group consisting of hydrogen and C1-C8 hydrocarbyl groups, wherein no pair or one pair of substituents selected from R9, R10 and R11 are linked to form a saturated or unsaturated ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.