Patent application number | Description | Published |
20090306315 | Process for Preparing a Catalyst Component for Propylene Polymerization - The invention relates to a process for preparing a polymerization catalyst component wherein a solid compound with formula Mg(OR | 12-10-2009 |
20100168351 | CATALYST COMPLEX AND PROCESS FOR PRODUCING MULTIMODAL MOLECULAR WEIGHT POLYOLEFINS - Multinuclear catalyst complex comprising two or more active metal centres and at least one phenoxyimine compound and at least one substituted cyclopentadienyl, indenyl or fluorenyl derivative, each phenoxyimine compound being bonded to a cyclopentadienyl, indenyl or fluorenyl derivative forming a ligand framework, the cyclopentadienyl, indenyl or fluorenyl derivative being coordinated with one of the metal centres and the phenoxyimine compound being coordinated with an active metal centre other than the metal centre the cyclopentadienyl, indenyl or fluorenyl derivative is coordinated with, and wherein the phenoxyimine compound has the formula | 07-01-2010 |
20120123071 | PROCESS FOR THE PRODUCTION OF AN ETHYLENE POLYMER USING A CHROMIUM CONTAINING CATALYST - The invention is directed to a process for the production of high density polyethylene by polymerisation of ethylene in the presence of a supported chromium oxide based catalyst and an activator characterised in that the activator comprises the reaction mixture of a boron compound and/or an alkyl aluminium compound and a nitrogen containing compound wherein the boron compound is a (C | 05-17-2012 |
20130245218 | PROCESS FOR MAKING A SOLID CATALYST COMPONENT FOR ETHYLENE POLYMERIZATION AND COPOLYMERIZATION - The present invention relates to a process for preparing a solid catalyst component suitable for producing polyethylene and its copolymers, said process comprising the steps of: (a) contacting a dehydrated support having hydroxyl groups with a magnesium compound having the general formula MgR | 09-19-2013 |
20140343238 | PROCESS FOR THE PREPARATION OF METALLOCENE COMPLEXES - A process comprising reacting a 2-indenylboranic acid (ester) with a bromosubstituted compound in the presence of the Pd catalyst bis(triphenylphosphin)palladium dichloride and a base to form the corresponding bridged bis(indenyl) ligand. Where the 2-indenylboranic acid (ester) is the pinacolester of 2-indenylboranic acid, the process may further comprise reacting a 2-bromo indene compound with pinacolborane in the presence of a Pd catalyst and a base to form the corresponding 2-indenylpinacolylborane compound. Bridged bis(indenyl)ligands may suitably be used in the preparation of metallocene complexes, such as 2,2′-bis(2-indenyl)biphenyl ZrCl | 11-20-2014 |
20140378694 | PROCESS FOR THE PREPARATION OF METALLOCENE COMPLEXES - A process to prepared bridged bis(indenyl)ligands, comprising the step of reacting a 2-indenylpinacolyl borane compound with a bromosubstituted compound in the presence of a Pd catalyst and a base to form the corresponding bridged bis(indenyl) ligand. The process may further comprise the step of reacting a 2-bromo indene compound with pinacolborane in the presence of a Pd catalyst and a base to form the corresponding 2-indenylpinacolylborane compound. These bridged bis(indenyl)ligands may suitably be used in the preparation of metallocene complexes, such as 2,2′-bis(2-indenyl)biphenyl ZrCl | 12-25-2014 |
20150031824 | CATALYST COMPOSITION AND METHOD FOR PREPARING THE SAME - The present invention relates to a catalyst composition for the polymerisation of olefins comprising a support containing a single site catalyst component, a catalyst activator and a modifier wherein the modifier is the product of reacting an aluminum compound of general formula AI(R1, R2, R3) with an amine compound of general formula N(R4, R5, R6). The catalyst composition reduces fouling and/or sheeting when used to catalyse the polymerisation of olefins. The present invention also relates to a method for the polymerisation of olefins using the catalyst composition of the invention. | 01-29-2015 |