C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
252/109, 402/645
C08F 4/52 (2006.01) C08F 10/00 (2006.01) C08F 110/00 (2006.01)
Patent
CA 1069876
ABSTRACT OF THE DISCLOSURE: The present invention relates to a catalytic system for the polymerization of alpha-olefins consisting of a) an aluminium compound chosen among those of formula AlR3 or AlRxY3-x, wherein R is a lower alkyl radical, Y is an halogen or hydrogen atom, and x is a number between 1 and 2, and b) a titanium compound finely dispersed on a carrier having a high surface area, which carrier has been previously treated with a magnesium inorganic compound of the formula MgX2.nH2O, wherein X represents a halide and n is a number ranging from 0 to 6, in which catalyst the amount of magnesium dispersed on the carrier is ranging from 0.1 to 10% by weight and the molar ratio of aluminium to titanium is ranging from 20 to 75. The invention also relates to a method for preparing this catalytic system which has a high activity and remains unimpaired in time.
229053
Bertolini Guglielmo
Bruzzone Mario
Cesca Sebastiano
Greco Alberto
Na
Snamprogetti S.p.a.
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