Abstract:
A catalyst component comprising Ti, Mg, CI, and an electron donor compound having porosity of at least 0.2 cm 3 /g and characterized by the fact that it further comprises Cu oxide, with the proviso that when the electron donor compound is selected from esters of phthalic acids, the porosity is of at least 0.45 cm 3 /g.
Abstract:
The present disclosure relates to a solid catalyst component for the (co)polymerization of olefins CH2═CHR, in which R is hydrogen or a hydrocarbyl radical with 1-12 carbon atoms, comprising Ti, Mg, and Cl, and optionally an electron donor compound selected from the group consisting of ethers, amines, silanes, carbamates ketones, esters of aliphatic acids, alkyl and aryl esters of optionally substituted aromatic polycarboxylic acids, diol derivatives chosen among monoesters monocarbamates and monoesters monocarbonates or mixtures thereof, comprising from 0.1 to 50% wt of Bi with respect to the total weight of the solid catalyst component.
Abstract:
Catalyst components component for the (co)polymerization of olefins CH 2 =CHR, in which R is a hydrocarbyl radical with 1-12 carbon atoms, optionally in mixture with ethylene, comprising Ti, Mg, Zn, CI, and an electron donor compound characterized by the fact that more than 50% of the titanium atoms are in the +4 valence state, and that the amount of Zn ranges from 0.1 to 4% by weight based on then total weight of said solid catalyst component.
Abstract:
Catalyst components for the polymerization of olefins CH 2 =CHR wherein R is hydrogen or a hydrocarbon radical having 1-12 carbon atoms, comprising Mg, Ti, CI and a diol or a derivative thereof.
Abstract:
A process for the (co)polymerization of propylene carried out at a temperature ranging from 77 to 95°C in the presence of a catalyst comprising the product obtained by reacting: -an organo-aluminium compound, with -a solid catalyst component comprising Mg, Ti and electron donor compound selected from specific diolesters.
Abstract:
A catalyst system comprising the product obtained by contacting (a) a solid catalyst component containing Mg, Ti, halogen and at least an electron donor compound selected from 1,3-diethers; (b) an alkylaluminum cocatalyst; and (c) an ester of formula ROOC-(CH2)n-COOR in which n is an integer from 2 to 8, R groups, equal to or different from each other, are C1-C10 alkyl groups.
Abstract:
A solid catalyst component for polymerizing at least one olefin comprising Mg, Ti, at least one halogen, and at least one electron donor selected from arylsulfonates and arylsulfonyl derivatives of a specified formula. The solid catalyst component is able to give in high yields polyolefins with high stereoregularity.