Abstract:
Process for the polymerization of butene-1 carried out in the presence of a catalyst comprising (a) a solid catalyst component comprising Mg, Ti and an electron donor compound of the following formula (I), In which the R groups equal to or different from each other, are C 1 -C 15 hydrocarbon groups, the R 1 -R 2 groups, equal to or different from each other, are hydrogen, halogen or C 1 -C 15 hydrocarbon groups, optionally containing an heteroatom selected from halogen, P, S, N and Si, n and m are integer from 0 to 3 with the proviso that at least one of them is different from 0; (b) An aluminium alkyl cocatalyst and (c) an external electron donor
Abstract:
Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor compound of the following formula (I) In which R to R 12 groups, equal to or different from each other, are hydrogen, halogen or C 1 -C 15 hydrocarbon groups, optionally containing an heteroatom selected from halogen, P, S, N and Si, with the proviso that R groups cannot be hydrogen and that the carboxylate groups are in trans configuration with respect to each other.
Abstract:
Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor compound of the following formula (I) In which R to R 4 groups, equal to or different from each other, are hydrogen, halogen or C 1 -C 15 hydrocarbon groups, optionally containing an heteroatom selected from halogen, P, S, N and Si, which may be linked to form a saturated or unsaturated mono or polycycle and R 5 groups are selected from C 1 -C 15 hydrocarbon groups optionally containing an heteroatom selected from halogen, P, S, N and Si.
Abstract:
Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor compound of the following formula (I) In which R 1 to R 4 groups, equal to or different from each other, are hydrogen, C 1 -C 15 hydrocarbon groups, optionally containing an heteroatom selected from halogen, P, S, N and S i ,, R 6 group is selected from C 1 -C 15 hydrocarbon groups optionally containing an heteroatom selected from halogen, P, S, N and Si, and R 5 is selected from phenyl groups mono or poly substituted with halogens, said groups R 1 -R 4 being also optionally linked to form a saturated or unsaturated mono or poly cycle.
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 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 diolesters of a specific formula (b) an alkylaluminum cocatalyst and (c) an ester of formula R'OOC-(CR" 2 ) m -COOR' in which m is an integer from 2 to 8, the R' groups, equal to or different from each other, are C1-C10 alkyl groups and the R" groups, independently, are hydrogen or C1 -C15 hydrocarbon groups.
Abstract:
A catalyst component for the polymerization of olefins comprising Mg, Ti and at least two electron donor compounds, one of which (A) belonging to specific diolesters and the other electron donor compound (B) being selected from aromatic monoesters of the following formula (B) in which R groups equal to or different from each other, are selected from C 1 -C 15 hydrocarbon groups which can be also linked to form one or more cycles, m is an integer from 1 to 5 and R 5 is a C 1 -C 15 alkyl group, said electron donors A and B being in amounts such that the A/B molar ratio is lower than 20.
Abstract:
Solid adducts comprising a MgCl 2 , ethanol and a compound (A), said compounds being present in molar ratios defined by the following formula MgCl 2 (EtOH) n (A) p in which n is from 0.1 to 6, p ranges from 0.001 to 0.5 and A is a compound selected from cyclic hydrocarbon structures which are substituted with at least two hydroxy groups.