Abstract:
The invention relates to a novel process for the preparation of an olefin polymerization catalyst component comprising magnesium, titanium, a halogen and an electron donor. The process comprises the steps of: (i) reacting a titaniumless magnesium compound (a) containing an alkoxy moiety, which titaniumless magnesium compound is selected from the group consisting of a compound or complex containing halogen and alkoxy linked to magnesium, a complex containing a magnesium dihalide and an alcohol, and a non-complex magnesium dialkoxide, with a halogen compound (b) being capable of forming the electron donor by replacement of its halogen by said alkoxy moiety, to give an intermediate (ab); and (ii) reacting said intermediate (ab) with a titanium halide (c); or (i)' reacting a titaniumless magnesium compound (a) containing an alkoxy moiety, which titaniumless magnesium compound is selected from the group consisting of a compound or complex containing halogen and alkoxy linked to magnesium, and a complex containing a magnesium dihalide and an alcohol, with titanium halide (c), to give an intermediate (ac); and (ii)' reacting said intermediate (ac) with a halogen compound (b) being capable of forming the electron donor by replacement of its halogen by said alkoxy moiety.
Abstract:
The invention relates to a complex product containing magnesium, halogen and alkoxy, which has the following composition: MgpXq(OR)2p-q wherein X is a halogen, R is an alkyl group having from 1 to 20 carbon atoms, p is from 2 to 20 and q is from 1 to (2p-1). More specifically the complex product is a complex of the formula MgCl2.[Mg(OR)2]2 wherein R is an alkyl having from 4 to 10 carbon atoms. The complex is soluble in non-polar solvents and can be used in the preparation of transition metal components of Ziegler-Natta catalyst systems.
Abstract:
In accordance with this invention are methods for making the novel compositions and methods of using the compositions for polymerization of olefins. In its broadest form, the method of producing the supported catalytic composition of the present invention comprises treating an inorganic or inorganic oxide support which has incorporated uniformly therein a Group 3-10 transition metal from the Periodic Table with a metal alkylating reagent wherein the reaction product is then treated with a halogenating reagent. The resultant reaction product can be recovered and is available for use in conjunction with the activating co-catalyst for the polymerization of polyolefins.
Abstract:
Catalyst systems of the Ziegler-Natta type containing as active components: a) a titanium-containing solid component in the production of which a titanium compound, a compound of magnesium, a halogenating agent and an electron donor component are used, b) an aluminium compound and c) as a further electron donor component, a silicon-organic compound of general formula (I): R?1R2Si(OR3)¿2 in which R1 is a C¿1?-C10 alkyl radical or a C3-C18 cycloalkyl radical, R?2¿ is a secondary butyl radical and R3 is a C¿1?-C8 alkyl radical. The catalyst systems of the invention are particularly suitable for the production of C2-C10-alkyl-1-enes.
Abstract:
A procatalyst composition which is suitable for the homo- and copolymerization of alpha olefins together with an organometallic cocatalyst compound and which is prepared by treating an inorganic carrier with a component system containing a complex of a magnesium halide and a tetraalkyl titanate, and a chlorinating compound which does not contain a transition metal compound. In order to raise the Mg:Ti ratio, the component system additionally contains an organomagnesium compound.
Abstract:
The present invention relates to an olefin polymerization process, wherein propylene and a C4 to C10 α-olefm monomer, preferably 1-butene- and optionally ethylene are reacted in the presence of a Ziegler-Natta catalyst so as to obtain a polypropylene, wherein the polypropylene comprises C4 to C10 α-olefm, prefrablyl-butene-derived comonomer units in an amount of from 0,5 to 15 wt% and ethylene-derived comonomer units in an amount of 0 to 3 wt%, and wherein the Ziegler-Natta catalyst comprises i) an external donor of the formula (I): (R 3 ) z (R 2 O) y Si(R 1 ) x and ii) a solid catalyst component being free of external carrier material.
Abstract:
Polyethylene comprising a first polyethylene fraction and a second polyethylene fraction, said first fraction is an ethylene copolymer of ethylene and 1-butene and said second fraction is an ethylene copolymer of ethylene and 1-hexene.
Abstract:
Die Erfindung betrifft konzentrierte niedrigviskose Lösungen von Erdalkalialkoxidverbindungen M(OCH 2 R 6 ) 2-a-b (OR 7 ) a [O(CHR 8 ) n OR 9 ] b in Mischung mit einer Metallalkylverbindung M(R 10 R 11 ) in aprotischen Lösungsmitteln, wobei M ein Erdalkalimetall ausgewählt aus Mg, Ca, Ba, Sr; OCH 2 R 6 ein Alkoxidrest bestehend aus mindestens 3 und höchstens 40 C-Atomen mit einer Verzweigung in 2-Position bezogen auf die O-Funktion, also R 6 = -CHR 12 R 13 mit R 12 , R 13 = unabhängig voneinander Alkylreste C 1 -C 18 ; R 7 ein Alkylrest mit 2-15 C-Atomen, der entweder linear ist oder eine Verzweigung ≥ der 3-Position (bezogen auf die O-Funktion) aufweist; R 8 ein Alkylrest mit 1 -6 C-Atomen, der entweder linear ist oder eine Verzweigung ≥ der 3-Position (bezogen auf die O-Funktion) aufweist; R 9 ein Alkylrest mit 2-15 C-Atomen, der entweder linear ist oder eine Verzweigung aufweist; R 10 und R 11 beliebige Alkylreste mit 1-15 C-Atomen sind, n = eine ganze Zahl von 1 bis 4 ist, a + b ≤ 2, wobei a und b Werte von 0 bis 2 annehmen können und das Molverhältnis M(OCH 2 R 6 ) 2-a-b (OR 7 ) a [O(CHR 8 ) n OR 9 ] b zu M(R 10 R 11 ) von 99,5:0,5 bis 60:40 liegt.
Abstract translation:本发明涉及Erdalkalialkoxidverbindungen M(OCH2R6)2-AB(OR 7)A [O(CHR 8)NOR9]的浓缩的低粘度溶液b。与在非质子溶剂中的烷基金属化合物M(R 10 R 11),其中M是选自Mg,Ca的碱土金属的混合物, 钡,锶; OCH2R6醇盐基团组成方面的至少3个,在具有在上O型功能的2位的分支至多40个碳原子,所以R6 = -CHR12R13与R12,R13 =独立地为烷基C1-C18; R7为烷基与2-15个碳原子,其为线性的或具有3-位(相对于O形函数)分支≥; R 8是一个烷基基团具有1 -6个碳原子,且为直链或具有3-位(相对于O形函数)分支≥; R9是烷基与2-15个碳原子,其为线性的或支链的被; R10和R11中,具有任何烷基1-15个C原子,n是从1到4的整数,A + B≤2,其中0和b值可能需要长达2和的摩尔比M(OCH2R6)2 -ab(OR 7)A [O(CHR 8)NOR9] b M 99.5(R 10 R 11):0.5〜60:40。
Abstract:
Improved process for the preparation of phthalate-free particulate olefin polymerisation Ziegler-Natta type catalystcomponent via the emulsion-solidification method, as well as catalyst component obtainable by the process and the use of said catalystcomponent in olefin polymerisation process.
Abstract:
The present invention relates to a polyethylene composition for pipe applications comprising a base resin having a density of more than 946.0 kg/m3 and equal to or less than 955.0 kg/m3, wherein the composition has a MFR21 of 1.7 to 7.0 g/10 min and a FRR21/5 of more than 10 to equal to or less than 40, and a polyethylene composition obtainable by a multistage process, the multistage process comprising polymerizing ethylene in the presence of a silica supported Ziegler Natta catalyst in a first loop reactor, transferring a first intermediate material to a second loop reactor, further polymerizing said first intermediate material for obtaining a second intermediate material and transferring said second intermediate material to a gas phase reactor, feeding ethylene and comonomer to the gas phase reactor for obtaining a base resin, and finally extruding the base resin together with stabilizers and carbon black into the polyethylene composition. The invention further concerns a multistage process for the production of the polyethylene composition and articles, preferably pipes, made from the inventive polyethylene composition.
Abstract translation:本发明涉及用于管道应用的聚乙烯组合物,其包含密度大于946.0kg / m 3且等于或小于955.0kg / m 3的基础树脂,其中所述组合物的MFR 21为1.7至7.0g / 10min 和大于10至等于或小于40的FRR21 / 5和可通过多级方法获得的聚乙烯组合物,所述多级方法包括在二氧化硅负载的齐格勒纳塔催化剂存在下在第一环管反应器中聚合乙烯,转移 将第二中间材料进一步聚合以获得第二中间材料并将所述第二中间材料转移到气相反应器中,将乙烯和共聚单体进料到气相反应器中以获得基础树脂;以及 最后将基础树脂与稳定剂和炭黑一起挤压到聚乙烯组合物中。 本发明还涉及用于生产由本发明的聚乙烯组合物制成的聚乙烯组合物和制品(优选管)的多级方法。