Patent application number | Description | Published |
20090143549 | Catalyst Components for the Polymerization of Olefins - The present invention relates to catalysts component for the polymerization of ethylene and its mixtures with olefins CH | 06-04-2009 |
20100168350 | Catalyst Components for the Polymerization of Olefins - The present invention relates to catalysts component for the polymerization of ethylene and its mixtures with olefins CH | 07-01-2010 |
20110152482 | CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS AND CATALYSTS THEREFROM OBTAINED - A solid catalyst component comprising Ti, Mg, halogen and a couple of monofunctional electron donor compounds MD1 and MD2 selected from esters and ethers, said donors being present in amounts such that the molar ratio MD1/MD2 ranges from 20 to 800. The so obtained catalyst component when converted into a catalyst is able to produce ethylene polymers with good morphological properties even under drastic polymerization conditions. | 06-23-2011 |
20110245070 | Catalyst Components for the Polymerization of Olefins and Catalysts Therefrom Obtained - Catalyst component comprising Mg, Ti, Hf, a halogen and, optionally, —OR groups where R is a C1-C20 hydrocarbon group, characterized in that (a) the Mg atoms are present in an amount higher than 7% based on the total weight of the said catalyst component, (b) the amount of Mg, Ti, and Hf atoms is such that the Mg/Ti molar ratio ranges from 3 to 25 and the Hf/Ti molar ratio is lower than 1.5 and (c) when —OR groups are present their amount is such that the —OR/Ti molar ratio is lower than 2. | 10-06-2011 |
20120010374 | Multistage Process for the Polymerization of Ethylene - The present invention relates to a slurry process for preparing an ethylene polymer having a melt flow ratio F/P, according to ASTM 1238, of higher than 25, carried out in two or more stages of polymerization at temperatures in the range from 60 to 120° C., in which at least two of the said two or more polymerization stages are carried out under different concentration of a molecular weight regulator, said process being carried out in the presence of a catalyst system comprising the product obtained by contacting (A) a solid catalyst component comprising Ti, Mg, halogen, and having a porosity (P | 01-12-2012 |
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 |
20120283402 | Magnesium dichloride-water adducts and catalyst components obtained therefrom - Solid adducts comprising MgCl | 11-08-2012 |
20120329963 | Catalyst Components for the Polymerization of Olefins - The present invention relates to catalysts component for the polymerization of ethylene and its mixtures with olefins CH | 12-27-2012 |
20130158214 | CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS - A solid catalyst component for olefin polymerization, and in particular for the preparation of LLDPE, comprising Mg, Ti, halogen and an electron donor compound (ID) belonging to cyclic ethers having 3-6 carbon atoms, characterized by having the molar ratio Mg/Ti higher than 5, the molar ratio Mg/ID lower than 3, and by a specific X-ray diffraction spectrum. | 06-20-2013 |
20130190466 | POLYETHYLENE EXTRUDED ARTICLES - Extruded articles, particularly films, comprising an ethylene polymer obtained by a polymerization process carried out in the presence the products obtained by contacting the following components: (a) a solid catalyst component comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and optionally one or more internal electron donor compounds, (b) an aluminum hydrocarbyl compound, (c) optionally an external electron donor compound, and (d) a polyalcohol partially esterified with carboxylic acids with alkyl groups having at least 10 carbon atoms. | 07-25-2013 |
20140046010 | CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS - A porous solid catalyst component 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 selected from 1,3-diethers and the other being selected from succinates, characterized by the fact that the molar ratio ID/Ti is from 0.30 to 0.90, where ID is the total molar amount of succinate and 1,3-diether, the molar ratio of the 1,3-diether donor to the succinate donor is higher than, or equal to, 0.60. | 02-13-2014 |
20140316083 | PRE-POLYMERIZED CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS - A pre-polymerized catalyst component for the polymerization of olefins endowed with high activity and morphological stability comprises a non-stereospecific solid catalyst component containing Ti, Mg and a halogen, and an amount of an ethylene/alpha-olefin block (co)polymer ranging from 0.1 up to 5 g per g of said solid catalyst component, said prepolymerized catalyst component being characterized by a mercury porosity, due to pores having radius up to 1 μm, ranging from 0.15 to 0.5 cm | 10-23-2014 |
20140378631 | PRE-POLYMERIZED CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS - A pre-polymerized catalyst component for the polymerization of olefins endowed with high activity and morphological stability comprises (i) a non-stereospecific solid catalyst component comprising Ti, Mg and a halogen and having a porosity, due to pores with radius up to 1 μm, ranging from 0.2 to 0.8 cm | 12-25-2014 |