Patent application number | Description | Published |
20090186994 | OLEFIN POLYMERISATION CATALYST - The present invention relates to particulate olefin polymerisation catalyst components comprising an alkaline earth metal, a compound of a transition metal and an electron donor, characterized in that the catalyst particle size distribution of the catalyst component is essentially monomodal and has a SPAN value below 1.2, where SPAN is defined as: (Particle diameter at 90% cumulative size)−(Particle diameter at 10% cumulative size)/(Particle diameter at 50% cumulative size). The particulate olefin polymerisation catalyst components of the present invention are provided by a process which comprises preparing a solution of a complex of an alkaline earth metal and an electron donor by reacting a compound of said metal with said electron donor or a precursor thereof in an organic liquid reaction medium, reacting said complex in the solution form with a compound of a transition metal to produce a dispersion, wherein the dispersed phase predominantly contains the alkaline earth metal in said complex, and solidifying said dispersed phase to obtain said catalyst component, and is characterized in that a second organic liquid medium is added to the reactor after mixing the alkaline earth metal complex with the transition metal compound. | 07-23-2009 |
20100216957 | CATALYST PREPARATION WITH PHOSPHOROUS COMPOUND - The invention refers to a process for preparing a Group 2 metal/transition metal olefin polymerization catalyst component in particulate form having an improved polymerisation properties due to the addition of a phosphorous compound during catalyst component preparation and the use thereof in a process for polymerising olefins. | 08-26-2010 |
20100240836 | PROCESS FOR THE MANUFACTURE OF HETEROPHASIC PROPYLENE COPOLYMER - The invention is directed to a process for the manufacture of heterophasic propylene copolymer compositions comprising the steps of forming a propylene polymer matrix in at least one slurry reactor and optionally in at least one gas phase reactor and subsequently forming in at least one gas phase reactor an elastomeric copolymer by copolymerizing propylene with ethylene and/or with another α-olefin in the presence of said matrix, wherein the polymerization is carried out in the presence of a catalyst system comprising a catalyst in form of solid particles, said particles (a) have a surface area of less than 20 m | 09-23-2010 |
20100267903 | Process for the preparation of propylene random copolymers - A process for the preparation of a propylene random copolymer, wherein propylene is polymerised with ethylene and/or a C4-C20 alpha-olefin in the presence of a catalyst system comprising solid catalyst particles, wherein the solid catalyst particles (a) have a specific surface area of less than 20 m | 10-21-2010 |
20110009257 | OLEFIN POLYMERISATION CATALYST - The present invention relates to particulate olefin polymerisation catalyst components comprising an alkaline earth metal, a compound of a transition metal and an electron donor, characterized in that the catalyst particle size distribution of the catalyst component is essentially monomodal and has a SPAN value below 1.2, where SPAN is defined as: (Particle diameter at 90% cumulative size)-(Particle diameter at 10% cumulative size)/(Particle diameter at 50% cumulative size). The particulate olefin polymerisation catalyst components of the present invention are provided by a process which comprises preparing a solution of a complex of an alkaline earth metal and an electron donor by reacting a compound of said metal with said electron donor or a precursor thereof in an organic liquid reaction medium, reacting said complex in the solution form with a compound of a transition metal to produce a dispersion, wherein the dispersed phase predominantly contains the alkaline earth metal in said complex, and solidifying said dispersed phase to obtain said catalyst component, and is characterized in that a second organic liquid medium is added to the reactor after mixing the alkaline earth metal complex with the transition metal compound. | 01-13-2011 |
20110098428 | CATALYST PREPARATION USING H2 - The invention refers to a process for preparing a Group 2 metal/transition metal olefin polymerization catalyst component in particulate form having improved polymerization properties due to the use of H | 04-28-2011 |
20110213108 | PROCESS FOR THE PREPARATION OF AN UNSUPPORTED, SOLID METALLOCENE CATALYST SYSTEM AND ITS USE IN POLYMERIZATION OF OLEFINS - Improved process for the preparation of an unsupported, heterogeneous olefin polymerization catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC) or of an actinide or lanthanide in the form of solid particles comprising the steps of a) preparing a solution of catalyst components, including an aluminoxane, a compound being effective to form stable, liquid clathrates with aluminoxane and an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, in a hydrocarbon solvent, yielding a two phase system with an upper solvent layer, which is separated, b) preparing a liquid/liquid emulsion system comprising a continuous phase in which said solution of the catalyst components forms a dispersed phase in the form of droplets, c) solidifying said dispersed phase to convert said droplets to solid particles and optionally recovering said particles to obtain said catalyst system, the catalysts system itself and its use for olefin polymerization. | 09-01-2011 |
20120259079 | CATALYST PREPARATION USING H2 - The invention refers to a process for preparing a Group 2 metal/transition metal olefin polymerization catalyst component in particulate form having improved polymerization properties due to the use of H | 10-11-2012 |
20120309913 | PROCESS FOR THE PREPARATION OF AN UNSUPPORTED, SOLID METALLOCENE CATALYST SYSTEM AND ITS USE IN POLYMERIZATION OF OLEFINS - Process for the preparation of an unsupported, heterogeneous olefin polymerization catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) in the form of solid particles comprising the steps of a) preparing a solution (A) comprising ai) an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, a | 12-06-2012 |
20130018158 | CATALYST WITH LOW SURFACE AREA - Catalyst in form of solid particles, wherein the particles—have a specific surface area of less than 20 m | 01-17-2013 |
20130116393 | CATALYST COMPONENT - The invention refers to a process for preparing a Group 2 metal/transition metal olefin polymerisation catalyst component in particulate form free of conventional phthalate electron donors and the use thereof in a process for polymerising olefins. | 05-09-2013 |
20130245212 | PREPARATION OF A SOLID CATALYST SYSTEM - Process for the preparation of a solid catalyst system comprising the steps of generating an emulsion by dispersing a liquid clathrate in a solution wherein (i) the solution constitutes the continuous phase of the emulsion and (ii) the liquid clathrate constitutes in form of droplets the dispersed phase of the emulsion, solidifying said dispersed phase to convert said droplets to solid particles and optionally recovering said particles to obtain said catalyst system, wherein the liquid clathrate comprises a lattice being the reaction product of aluminoxane, an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, and a further compound being effective to form with the aluminoxane and the organometallic compound the lattice, and a guest being an hydrocarbon compound, and the solution comprises a silicon fluid and a hydrocarbon solvent. | 09-19-2013 |
20130253152 | PREPARATION OF A SOLID CATALYST SYSTEM - Process for the preparation of a solid catalyst system (CS) comprising the steps of preparing a liquid clathrate (LC) comprising (a) a lattice (L) being the reaction product of (i) aluminoxane (A), (ii) an organometallic compound (O) of a transition metal (M) of Group 3 to 10 of the Periodic Table (IUPAC 2007) or of an actinide or lanthanide, and (i) a compound (B) being effective to form with the aluminoxane (A) and the organometallic compound (O) the lattice (L), and (b) a guest (G) being an hydro-carbon compound (HC), and subsequently precipitating said liquid clathrate (LC) obtaining said solid catalyst system (SC). | 09-26-2013 |
20130253156 | CATALYST COMPONENT - The invention refers to a process for preparing a Group 2 metal/transition metal olefin polymerisation catalyst component in particulate form for polymerising olefins, especially ethylene or propylene or comonomers thereof. | 09-26-2013 |
20140190723 | POWER CABLE COMPRISING POLYPROPYLENE - Power cable comprising a conductor surrounded by at least one layer comprising a polypropylene, wherein the polypropylene comprises nanosized catalyst fragments being evenly distributed in said polypropylene. | 07-10-2014 |
20140220236 | PROCESS FOR THE MANUFACTURE OF A CAPACITOR FILM - Process for producing of a capacitor film comprising the steps of (a) polymerizing propylene in the presence of a catalyst comprising a solid catalyst system obtaining a polypropylene, (b) subjecting said polypropylene to a film forming process obtaining a capacitor film, wherein during the polymerization step (a) said catalyst comprising the solid catalyst system fragments into nanosized catalyst fragments being distributed in said polypropylene, said solid catalyst system comprises a transition metal, a metal which is selected from one of the groups 1 to 3 of the periodic table (IUPAC), and an internal electron donor. | 08-07-2014 |
20140322535 | PREPARATION OF PRECIPITATED ZN PP CATALYSTS WITH INTERNAL PORE STRUCTURE USING NANOPARTICLES - Process for the preparation of a catalyst being in the form of solid particles comprising the steps of
| 10-30-2014 |
20140357477 | PREPARATION OF PHTHALATE FREE ZN PP CATALYSTS - Process for the preparation of new particulate olefin polymerisation catalyst components using a special alcohol mixture as well as the use of said new catalyst components for preparing a catalyst used in polymerisation processes. | 12-04-2014 |
20140378298 | CATALYST COMPONENT - The invention relates to a particulate Group 2 metal/transition metal olefin polymerisation catalyst component comprising a special 1,3-diether as internal donor, to a process for preparing same and to the use of such a catalyst component for pre paring a catalyst used in the polymerisation of olefins. | 12-25-2014 |