| Patent Number |
Title Of Patent |
Date Issued |
| RE40140 |
Polymerization catalyst used for producing polyolefins that have excellent combined properties |
March 4, 2008 |
| The invention relates to a process for preparing a catalyst for the polymerization of olefins, which comprises: a) preparation of a finely divided silica xerogel, b) loading of the xerogel with chromium from a solution of chromium trioxide or a chromium compound which is converted |
| 7579416 |
Catalyst system for olefin polymerization |
August 25, 2009 |
| The present invention relates to a catalyst system for olefin polymerization comprising an organic transition metal compound and, as cocatalyst, an ionic compound made up of anions of the formula (Ia), [Al(OR.sup.1).sub.4].sup.- (Ia) where the radicals R.sup.1 are identical or diffe |
| 7553916 |
Loop reactor with varying diameter for olefin polymerization |
June 30, 2009 |
| Process for polymerizing at least one olefinic monomer in a loop reactor at from 20 to 150.degree. C., but below the melting point of the polymer to be formed, and a pressure of from 5 to 100 bar, where the polymer formed is present in a suspension in a liquid or supercritical suspension |
| 7544826 |
Monocyclopentadienyl complexes |
June 9, 2009 |
| Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one bridged donor and at least one aryl group and a catalyst system comprising at least one of the monocyclopentadienyl complexes, and also processes for preparing them, the use of the catalyst system for |
| 7541481 |
Monocyclopentadienyl complex |
June 2, 2009 |
| Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, heteroaromatic ring system bound via a specific bridge, a catalyst system, comprising at least one of these monocyclopentadienyl complexes, the use of the catal |
| 7534847 |
Copolymers of ethylene with .alpha.-olefins |
May 19, 2009 |
| Copolymers of ethylene with .alpha.-olefins which have a molar mass distribution M.sub.w/M.sub.n of from 1 to 8, a density of from 0.85 to 0.94 g/cm.sup.3, a molar mass M.sub.n of from 10.000 g/mol to 4 000 000 g/mol and a CDBI of less than 50% and in which the side chain branching o |
| 7517938 |
Loop reactor with varying diameter for olefin polymerization |
April 14, 2009 |
| Process for polymerizing at least one olefinic monomer selected from ethylene, propylene and 1-butene in a loop reactor in the presence of a polymerization catalyst at from 20 to 150.degree. C., but below the melting point of a polymer to be formed, and a pressure of from 43 to 80 ba |
| 7507782 |
Transition-metal complexes with tridentate, nitrogen-containing ligands |
March 24, 2009 |
| Transition metal complexes with tridentate, nitrogen-containing, uncharged ligand systems, a catalyst system comprising at least one of the transition metal complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process for preparing pol |
| 7507688 |
Monocyclopentadienyl complexes |
March 24, 2009 |
| Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, 5-membered heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the monocyclopentadienyl complexes, the use of t |
| 7485685 |
Plastics pipes of polyolefins |
February 3, 2009 |
| Plastics pipes comprise polyolefins which can be prepared by means of a fluorine-modified chromium catalyst and are used for transporting gases and liquids. |
| 7202373 |
Monocyclopentadienyl complexes |
April 10, 2007 |
| Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one uncharged donor bound via a boron-containing bridge and comprising one or more atoms of group 15 and/or 16 of the Periodic Table of the Elements and is bound to a metal selected from the group cons |
| 7081557 |
Method for the oligomerization of olefins using a cycloalkylalkyl-substituted triazacyclohexane |
July 25, 2006 |
| Disclosed is a method for the oligomerization of olefins, wherein an olefin is brought into contact with a catalyst system that is obtained from a chromium source, a cycloalkylalkyl-substituted triazacyclohexane, especially a 1,3,5-tris-(cycloalkylalkyl)-1,3,5-triazacyclohexane and an |
