Magnesium dichloride-based adducts and catalyst components...

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B01J 27/00 (2006.01) C08F 4/651 (2006.01) C08F 4/654 (2006.01) C08F 10/00 (2006.01) C08F 10/06 (2006.01) C08F 110/06 (2006.01)

Patent

CA 2510254

Solid Lewis adducts comprising MgCl2, a Lewis base (LB) belonging to ethers, esters, ketones, silanes or amines and an alcohol ROH, in which R is a C 1-C 15 hydrocarbon group optionally substituted with heteroatoms containing groups, which compounds are in molar ratios to each other defined by the following formula MgC12(ROH) m(LB)n in which m ranges from 0.05 to 6, n ranges from 0.08 to 6. These adducts allow to prepare catalysts having a good morphological stability and high polymerization activities.

La présente invention concerne des adduits de Lewis solides comprenant du MgCl¿2?, une base de Lewis (LB) appartenant aux éthers, esters, cétones, silanes ou amines et un alcool ROH, dans lequel R est un groupe hydrocarbure en C¿1?-C¿15? éventuellement substitué par des groupes contenant des hétéroatomes. En l'occurrence, les composés respectent entre eux des rapports molaires correspondant à la formule suivante "MgCl¿2?(ROH)¿ m?(LB)¿n?". Dans cette formule, "m" se situe dans une plage allant de 0,05 à 6, et "n" dans une plage allant de 0,08 à 6. Ces adduits se prêtent à l'élaboration de catalyseurs se distinguant par une bonne stabilité morphologique et un niveau élevé d'activité pour la polymérisation.

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