Patent application number | Description | Published |
20090318642 | Surface-Modified Polymerization Catalysts for the Preparation of Low-Gel Polyolefin Films - Use of a catalyst composition treated with a surface modifier in the polymerization of olefins for lowering the gel content in the resulting polyolefin, wherein the surface modifier has a polar residue capable of interacting with the surface of the catalyst composition and a lipophilic residue and is selected from carboxylate metal salts, nitrogen containing catalyst surface modifiers, phosphorus containing catalyst surface modifiers, oxygen containing catalyst surface modifiers, sulfur containing catalyst surface modifiers, fluoro containing polymeric catalyst surface modifiers or mixtures thereof and wherein the gel content is determined by using pressed plate gel analysis method. | 12-24-2009 |
20100305286 | CATALYSTS - A complex comprising a ligand of formula (I), wherein each R | 12-02-2010 |
20110262670 | CROSS-LINKABLE POLYETHYLENE RESIN FOR PIPES MADE BY A SINGLE-SITE CATALYST - An ethylene polymer with a density of less than 955 kg/m | 10-27-2011 |
20110263801 | MULTI-STAGE PROCESS FOR PRODUCING MULTI-MODAL LINEAR LOW DENSITY POLYETHYLENE - Multi-stage polymerization process for the production of a multi-modal linear low density polyethylene in at least two staged reactors connected in series comprising at least (i) polymerizing in a first slurry phase stage ethylene monomers and optionally one or more alpha-olefin comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A) (ii) polymerizing in a second gas or slurry phase stage ethylene monomers and one or more alpha-olefine comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B), whereby the Ziegler-Natta polymerization catalyst system comprises: 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of the formula (I): Mg(OR | 10-27-2011 |
20110306737 | MULTI-STAGE PROCESS FOR PRODUCING MULTI-MODAL ETHYLENE POLYMER COMPOSITION - Multi-stage polymerization process for the production of a multi-modal linear low density polyethylene in at least two staged reactors connected in series comprising at least (i) polymerizing in a first slurry phase stage ethylene monomers and optionally one or more alpha-olefin comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a first polyethylene fraction component (A) (ii) polymerizing in a second gas or slurry phase stage ethylene monomers and one or more alpha-olefin comonomers, in the presence of a Ziegler-Natta polymerization catalyst system to obtain a second polyethylene fraction component (B), whereby the Ziegler-Natta polymerization catalyst system comprises 1) a solid procatalyst formed by contacting at least: a) a Mg-alcoholate complex of the formula (I): Mg(OR | 12-15-2011 |
20120252993 | CATALYSTS - A complex containing a ligand of formula (I): | 10-04-2012 |
20140183797 | CROSS-LINKABLE POLYETHYLENE RESIN FOR PIPES MADE BY A SINGLE-SITE CATALYST - An ethylene polymer with a density of less than 955 kg/m | 07-03-2014 |
20160060372 | SUPPORTED DONOR MODIFIED ZIEGLER-NATTA CATALYSTS - Procatalyst comprising an inorganic support, a chlorine compound carried on said support, a magnesium compound carried on said support, a titanium compound carried on said support, and a compound comprising two oxygen containing rings, wherein said two rings are linked via a bridge selected from the group consisting of carbon bridge, silicon bridge, ethane-1.2-diyl bridge, ethene-1,2-diyl bridge, alkylaminomethyl bridge and imine bridge. | 03-03-2016 |