Abstract:
A process for the preparation of high purity propylene polymers carried out 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, said process being carried out employing an organo-aluminum/propylene ratio equal to or lower than 1.75 mmole/kg.
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:
Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor of Formula (I) in which R, R 1 and R 4 groups, equal to or different from each other, are C 1 -C 15 hydrocarbon groups and the R groups can be linked to form a cycle, R 2 -R 3 groups, equal to or different from each other, are selected from hydrogen and C 1 -C 15 hydrocarbon groups, the R 1 -R 4 groups can optionally contain an heteroatom selected from halogen, P, S, N,O and Si, n is an integer from 0 to 5 and said electron donor and Ti atoms being present in an amount such that their molar ratio is equal to, or lower than, 0.65.
Abstract:
A process for preparing 1-butene polymers, comprising polymerizing 1-butene or copolymerizing 1-butene with ethylene, propylene or an alpha-olefin of formula CHT 2 =CHT wherein T is a C 3 -C 10 alkyl group, in the presence of a catalyst system obtainable by contacting: A) a metallocene compound belonging to formula (I): wherein M is zirconium titanium or hafnium; X, equal to or different from each other, is a hydrogen atom, a halogen atom, a a hydrocarbon radical, optionally containing heteroatoms; R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 and R 13 are hydrogen atoms, or C 1 -C 4O hydrocarbon radicals optionally containing heteroatoms; R 1 , R 2 and R 3 , are linear or branched, C 1 -C 2o -alkyl radicals, optionally containing heteroatoms; B) a Jumoxane or a compound capable of forming an alkyl metallocene cation; and optionally C) organo aluminum compound.
Abstract translation:一种制备1-丁烯聚合物的方法,包括将1-丁烯或1-丁烯与乙烯,丙烯或式CHT 2 CH = CHT的α-烯烃聚合,其中T是C 3 在可以通过下述方法获得的催化剂体系存在下进行:A)属于式(I)的茂金属化合物:其中M是锆钛或铪; X,彼此相同或不同,是氢原子,卤素原子,烃基,任选地含有杂原子; R 4,R 5,R 6,R 7,R 8, R 9,R 10,R 11,R 12和R 13是 氢原子或任选含有杂原子的C 1 -C 40烃基; R 1,R 2和R 3是直链或支链的C 1 -C 2 O 任选地含有杂原子的烷基; B)可以形成烷基茂金属阳离子的Jumoxane或化合物; 和任选的C)有机铝化合物。
Abstract:
A process for obtaining atactic 1-butene polymer optionally containing at least one comonomer selected from ethylene, propylene or an alpha-olefin of formula CH2=CHR, wherein R is a linear or branched C3-C 20 alkyl group, comprising the step of polymerizing 1-butene and optionally ethylene, propylene or said alpha-olefin, in the presence of a catalyst system obtainable by contacting: a) at least one metallocene compound of formula (I) in its meso or meso-like form wherein M is an atom of a transition metal; p is an integer from 0 to 3; X, same or different, is a hydrogen atom, a halogen atom, or a hydrocarbon group; L is a divalent C 1 -C 40 hydrocarbon radical optionally containing heteroatoms belonging to groups 13-17 of the Periodic Table of the Elements; R' and R 2 , are C 1 -C 40 hydrocarbon radicals; T, equal to or different from each other, is a moiety of formula (IIa) or (Ilb) wherein R 3 is a C I -C 40 hydrocarbon radical; R 4 and R 6 , are hydrogen atoms or C 1 -C 40 hydrocarbon radicals; R 5 is a C I -C 40 hydrocarbon radical; R 7 and R 8 , equal to or different from each other, are hydrogen atoms or C 1 -C 40 hydrocarbon radicals; and b) an alumoxane or a compound capable of forming an alkyl metallocene cation.
Abstract:
An organometallic compound obtainable by contacting: a compound having the following formula (I), wherein: R is a hydrocarbon radical; R , R and R , are hydrogen atoms, halogen atoms, or hydrocarbon radicals; with a Lewis acid of formula (II) MtR 3 (II) wherein Mt is a metal belonging to Group 13 of the Periodic Table of the Elements; R are selected from the group consisting of halogen atoms, halogenated C6-C20 aryl and halogenated C7-C20 alkylaryl groups.
Abstract translation:通过使具有下式(I)的化合物接触而获得的有机金属化合物,其中:R a是烃基; R b,R o和R d分别是氢原子,卤素原子或烃基; 与式(II)的路易斯酸MtR 1(II)其中Mt是属于元素周期表第13族的金属; R 1选自卤素原子,卤代C 6 -C 20芳基和卤代C 7 -C 20烷基芳基。
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.