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Chromium and nickel catalysts for oligomerization reactions and process for obtaining alpha-olefins using said catalysts
US8993775B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8993775-B2 |
| Application number | US-201113250439-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 30, 2011 |
| Priority date | Jul 5, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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The present invention refers to the synthesis of precatalysts and the use of such precatalysts in ethylene oligomerization reactions for the selective production of alpha-olefins. More specifically, it refers to the preparation and use of coordination compounds containing polydentate ligands comprising Group 6 and 10 transition metal compounds, in particular chromium (III) and nickel (II). Such catalytic precursors present high catalytic activity and selectivity for the production of alpha-olefins.
First claim
Opening claim text (preview).
The invention claimed is: 1. A catalyst of the general formula LMX n , where “M” is a metal, “X” is an anion, and “n” is the number of anions “X” present in each molecule, varying from 1 to 3, and “L” is a polydentate nitrogen ligand of formula: wherein “E” is a heterocycle pyridine ring, an imidazole ring or an element selected from among oxygen or sulfur, R 1 , R 2…
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Chemistry & Metallurgy · mapped topic
- C07F15/045Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8993775B2 cover?
- The present invention refers to the synthesis of precatalysts and the use of such precatalysts in ethylene oligomerization reactions for the selective production of alpha-olefins. More specifically, it refers to the preparation and use of coordination compounds containing polydentate ligands comprising Group 6 and 10 transition metal compounds, in particular chromium (III) and nickel (II). Such…
- Who is the assignee on this patent?
- De Lazaro Casagrande Junior Osvaldo, Rabello Carlos Rene Klotz, De Oliveira Lucilene Losch, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification C07F15/045. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).