Patent application number | Description | Published |
20090036298 | Catalyst Components for the Polymerization of Olefins - Catalysts components for the polymerization of ethylene comprising Ti, Mg, halogen, OR | 02-05-2009 |
20090054608 | Process for Preparing Crystalline Ethylene (Co) Polymers - A process for preparing crystalline ethylene (co)polymers comprising (co)polymerizing ethylene in the presence of carried out in the presence catalyst system comprising (a) a solid catalyst component comprising Ti, Mg, halogen, ORI groups, where RI is a C1-C12 hydrocarbon group optionally containing heteroatoms, having ORI/Ti molar ratio of at least 0.5, an amount of titanium, with respect to the total weight of said solid catalyst component, higher than 4% by weight, and showing a specific pattern of the SS-NMR; and (b) an aluminum alkyl compound as a cocatalyst. The process allows to obtain in good yields ethylene polymers with narrow MWD. | 02-26-2009 |
20090118446 | Components and catalysts for the polymerization of olefins - The present invention relates to a solid catalyst component for the polymerization of olefins CH | 05-07-2009 |
20090156391 | Catalyst Components for the Polymerization of Olefins - A catalyst component for the polymerization of olefins CH | 06-18-2009 |
20090209714 | Catalyst Components for the Polymerization of Olefins - Catalyst components for the(co)polymerization of ethylene comprising Ti, Mg, halogen, ORI groups, where RI is a C1-C12 hydrocarbon group optionally containing heteroatoms, having ORI/Ti molar ratio in the range 0.1-1.5, a Mg/Ti molar ratio of less than 8, an amount of titanium, with respect to the total weight of said solid catalyst component, higher than 4% by weight characterized by a specific SS-NMR pattern are particularly useful for preparing narrow MWD crystalline ethylene polymers. | 08-20-2009 |
20090240009 | Magnesium methoxide based catalyst precusors and catalyst components obtained therefrom - Catalyst precursors comprising Mg, Ti, OMe and OR groups that are in molar ratios defined by the formula MgTi | 09-24-2009 |
20090270560 | Propylene-Ethylene Copolymers and Process for Their Preparation - Propylene-ethylene copolymers are flexible and show a very good balance between softness and mechanical properties in their crude state are obtained by solution polymerization in the presence of Ziegler-Natta catalysts. The said copolymers comprise from 10 to 50% wt of ethylene and are characterized by: product of the comonomer reactivity ratio r1·r2≦1.5; absence of 2,1 propylene insertions and tensile strength at break higher than 4 Mpa. | 10-29-2009 |
20090280977 | PROCESS FOR PREPARING CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS - The instant invention relates to a process for preparing a catalyst component for the polymerization of olefins. Catalysts prepared with this catalyst component provide a high mileage for the production of polyolefin with a high bulk density of the polymer produced therewith. Particularly, catalysts prepared with this catalyst component are suitable for the improved economical production of polyolefin in gas phase processes. | 11-12-2009 |
20090306316 | CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS AND CATALYSTS THEREFROM OBTAINED - A catalyst component comprising Ti, Mg, Al, Cl, and optionally OR | 12-10-2009 |
20100029869 | Catalyst components for the polymerization of olefins and catalysts therefrom obtained - A catalyst component comprising Ti, Mg, Cl, and optionally OR | 02-04-2010 |
20100120998 | CATALYST COMPONENT FOR THE POLYMERIZATION OF OLEFINS - A catalyst component for the polymerization of olefins comprises Mg, Ti, halogen, and an alpha-omega-diether represented by the general formula: (RO)—(CR | 05-13-2010 |
20100160154 | Magnesium Chloroakolate-Based Catalyst Precursors - Catalyst precursors comprising Mg, Cl, Ti, and OR groups that are in molar ratios defined by the formula MgCl | 06-24-2010 |
20100222528 | CATALYST FOR THE POLYMERIZATION OF OLEFINS - The present invention relates to catalysts for the polymerization of olefins, in particular ethylene and its mixtures with olefins CH | 09-02-2010 |
20100240845 | Catalyst component for the polymerization of olefins - Catalyst component for the polymerization of olefins comprising Mg, Ti, halogen and an electron donor is obtained by a batch process comprising: (A) A first step comprising reacting an adduct of formula MgCl | 09-23-2010 |
20100240846 | Catalyst component for the polymerization of olefins based on 1,3-diethers - Catalyst components for the polymerization of olefins comprising Mg, Ti, halogen and 1,3-diethers as internal donors having an improved balance of properties in terms of activity and morphological stability are obtained by a process comprising: (A) A first step comprising reacting an adduct of formula MgCl | 09-23-2010 |
20100292420 | CATALYST FOR THE POLYMERIZATION OF OLEFINS - The present invention relates to catalysts for the polymerization of ethylene and its mixtures with olefins CH | 11-18-2010 |
20100324240 | CATALYST FOR THE POLYMERIZATION OF OLEFINS - The present invention relates to catalysts systems for the polymerization of ethylene and its mixtures with olefins CH | 12-23-2010 |
20100324241 | CATALYST FOR THE POLYMERIZATION OF OLEFINS - The present invention relates to catalysts systems for the polymerization of ethylene and its mixtures with olefins CH | 12-23-2010 |
20110077367 | CATALYST SYSTEM FOR THE POLYMERIZATION OF OLEFINS - A catalyst system for the polymerization of olefins comprising (A) a catalyst component obtained by reacting a Mg(OR | 03-31-2011 |
20110077368 | CATALYST FOR THE POLYMERIZATION OF OLEFINS - The present invention relates to catalysts systems for the polymerization of olefins CH | 03-31-2011 |
20110082268 | Indazole-modified ziegler-natta catalyst system - A modified Ziegler-Natta catalyst system, a method for preparing the catalyst system, and a process for polymerizing an olefin in the presence of the catalyst system are disclosed. The catalyst system comprises a titanium or vanadium compound, an aluminum compound, and an indazole. Improved comonomer incorporation and the ability to regulate molecular weight are achieved in the manufacture of polyolefins. | 04-07-2011 |
20110082269 | Nitroso-modified ziegler-natta catalyst system - A modified Ziegler-Natta catalyst system, a method for preparing the catalyst system, and a process for polymerizing an olefin in the presence of the catalyst system are disclosed. The catalyst system comprises a titanium compound, an aluminum compound, and a nitroso compound. Improved polyolefin properties, such as high molecular weight, are obtained. | 04-07-2011 |
20110092656 | CATALYST SYSTEM FOR THE POLYMERIZATION OF OLEFINS - The present invention relates to catalysts systems for the polymerization of olefins CH | 04-21-2011 |
20110136981 | BUTENE-1 COPOLYMERS AND PROCESS FOR THEIR PREPARATION - The present invention relates to butene-1 copolymers containing up to 40% by mol of ethylene and/or propylene derived units characterized by the following properties:
| 06-09-2011 |
20110251352 | Catalyst Components for the Polymerization of Olefins - Prepolymerized catalyst component for the polymerization of olefins CH | 10-13-2011 |
20120077944 | Catalyst Components for the Polymerization of Olefins and Catalysts Therefrom Obtained - Catalyst components for the polymerization of olefins CH | 03-29-2012 |
20120083576 | Process for the Preparation of Impact Resistant Propylene Polymer Compositions - A process for the preparation of propylene polymer compositions carried out in the presence of a catalyst system comprising (a) a solid catalyst component having average particle size ranging from 15 to 80 μm comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 50 to 90% by mol with respect to the total amount of donors and selected from succinates and the other being selected from 1,3 diethers, (b) an aluminum alkyl and optionally (c) an external electron donor compound, and comprising the following steps:
| 04-05-2012 |
20120130031 | PROCESS FOR THE PREPARATION OF ETHYLENE POLYMERS WITH NARROW MOLECULAR WEIGHT DISTRIBUTION - Process for the preparation of ethylene polymers having narrow MWD characterized by a F/E ratio lower than 35 carried out in the presence of a catalyst system comprising (a) a solid catalyst component comprising Ti atoms that are substantially in the +4 oxidation state, Mg, Cl, and optionally OR groups and internal donors in which R is a C1-C20 hydrocarbon group, in which the OR/Ti molar ratio is equal to or lower than 0.35 and the internal donor/Ti ratio is lower than 1, (b) an aluminum alkyl compound and (c) a compound selected from alkoxybenzenes of specified formula. | 05-24-2012 |
20120165483 | Magnesium dichloride-alcohol adducts and catalyst components obtained therefrom - Solid adducts comprising a MgCl | 06-28-2012 |
20120259078 | CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS AND CATALYSTS THEREFROM OBTAINED - Catalyst component comprising Mg, Ti, and halogen atoms, and is characterized in that (a) the Ti atoms are present in an amount higher than 4% based on the total weight of the said catalyst component, (b) the amount of Mg and Ti atoms is such that the Mg/Ti molar ratio is higher than 2 and (c) by a X-ray diffraction spectrum, in which, in the range of 2θ diffraction angles between 47° and 52°, at least two diffraction lines are present at diffraction angles 2θ of 48.3±0.2°, and 50.0±0.2°, the most intense diffraction lines being the one at 2θ of 50.0±0.2°, the intensity of the other diffraction line being equal to or lower than the intensity of the most intense diffraction line. | 10-11-2012 |
20120302709 | CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS - Catalyst component for the polymerization of olefins CH | 11-29-2012 |
20120316300 | CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS - Catalyst component for the polymerization of olefins CH | 12-13-2012 |