CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS AND CATALYSTS THEREFROM OBTAINED

• Main Authors: BAITA, PIETRO, FAIT, ANNA, MORINI, GIAMPIERO, BRITA, DIEGO, COLLINA, GIANNI, EVANGELISTI, DANIELE, GADDI, BENEDETTA, MARTURANO, LORELLA, MAVRIDIS, HARRY
• Format: Patent
• Language: English; French
• Published: 30.06.2011
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

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 2? diffraction angles between 47° and 52°, at least two diffraction lines are present at diffraction angles 2? of 48.3 ± 0.2°, and 50.0 ± 0.2°, the most intense diffraction lines being the one at 2? 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. L'invention concerne un composant catalytique comprenant Mg, Ti et des atomes d'halogène, caractérisé en ce que (a) les atomes de Ti sont présents à une teneur supérieure à 4 % par rapport à la masse totale dudit composant catalytique, (b) la quantité des atomes de Mg et de Ti est telle que le rapport molaire Mg/Ti est supérieur à 2 et (c) dans le spectre de diffraction X où l'intervalle des angles de diffraction 2? est compris entre 47° et 52°, au moins deux raies de diffraction sont présentes à des angles de diffraction 2? de 48,3 ± 0,2°, et 50,0 ± 0,2°, la raie de diffraction la plus intense étant celle avec un 2? de 50,0 ± 0,2°, l'intensité de l'autre raie de diffraction étant inférieure ou égale à l'intensité de la raie de diffraction la plus intense.