Patent ID: 6437061
Filing Date: 2002-08-20
Classification: B01J,C08F

Abstract:
Process for the polymerization of olefins of formula CH2&boxH;CHR4, in which R4 is hydrogen or a hydrocarbon radical having 1-12 carbon atoms, carried out in the presence of a catalyst component comprising the product of the reaction between a transition metal compound and a MgCl2-mROH-nH2O adduct, where R is a C1-C10 alkyl, 2&lE;m&lE;4. 2, and 0&lE;n&lE;0.7, characterized by a X-ray diffraction spectrum in which in the range of 2&thgr; diffraction angles between 5Â° and 15Â° three diffraction lines are present at diffraction angles 2&thgr; of 8.8Â±0.2Â° and 9.4Â±0.2Â° and 9.8Â±0.2Â°, the most intense diffraction line being the one at 2&thgr;=8.8+0.2Â° intensity of the other two diffraction lines being at least 0.2 times the intensity of the most intense diffraction lines.