Abstract:
The invention relates to a process for the preparation of an olefin polymerisation catalyst component, said catalyst component and its use. The process is mainly characterised by the steps of: (i) reacting in solution a magnesium compound containing an alkoxy group, a carboxylic acid halide and a four-valent titanium compound containing a halogen, for obtaining a dissolved reaction product and (ii) recovering a fraction of the reaction product from step (i) in particulate form by contacting the dissolved reaction product with a mixture of an aromatic and an aliphatic hydrocarbon, or by contacting the dissolved reaction product first with an aromatic hydrocarbon and then with an aliphatic hydrocarbon, the amount of aromatic and aliphatic hydrocarbon being at least 5 mol per mol of magnesium.
Abstract:
A process of producing supported olefin polymerization catalysts in which the support is a porous silica material containing specified amounts of alkali and alkaline metal cations, and olefin polymerization catalysts produced thereby.
Abstract:
The various embodiments of the invention provide, a magnesium dichloride support and the magnesium titanium polymerization procatalyst made therefrom, and methods for making and using the same.
Abstract:
The present invention relates to an olefin polymerization process, wherein propylene and a C4 to C10 a-olefin, 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 a-olefin, preferablyl-butene-derived comonomer units in an amount of from 0.5 wt% to 15 wt% and ethylene-derived comonomer units in an amount of 0 wt% 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 Ziegler-Natta catalyst component being free of external carrier material.
Abstract:
A multimodal polyethylene copolymer suitable for use in cable insulation comprising: (III) 45 to 55 wt% of a lower molecular weight component which is an ethylene copolymer of ethylene and at least one C3-12 alpha olefin comonomer, said LMW component having a density of 940 to 962 kg/m 3 and an MFR 2 of 50 to 500 g/10min; (IV) 55 to 45 wt% of a higher molecular weight ethylene copolymer component of ethylene and at least one C3-12 alpha olefin comonomer; wherein said multimodal polyethylene copolymer has a density of 940 to 950 kg/m 3 , an MFR 2 of 0.05 to 2.0 g/10m in. and preferably at least one of crystallization half time > 3.0 mins at 120.5°C, a crystallization half time > 5.0 mins at 121°C or a crystallization half time > 10.0 mins at 122°C.
Abstract:
The present invention relates to a process for producing polypropylene terpolymer composition by polymerizing propylene with ethylene and C4 to C8 α-olefin monomers in a sequential polymerization process with at least two reactors connected in series in the presence of solid Ziegler-Natta catalyst having a surface area below 20 m 2 /g.
Abstract:
The present invention is directed to a process for producing a solid olefin polymerization catalyst component from an emulsion wherein the particle size of the solid catalyst or the droplet size of the emulsion is controlled. The actual size of the droplets or the solid catalyst particles is measured, or alternatively, both are measured. Then a difference between the actual size and the set point is calculated and the process is controlled based on the difference.
Abstract:
The present application relates to a polyethylene composition comprising a base resin being a copolymer of ethylene with at least one alpha olefin comonomer having from 3 to 12 carbon atoms, the base resin having a density of more than 940.0 kg/m 3 and equal to or less than 952.5 kg/m 3 , determined according to ISO 1 183-1:2004, wherein the composition has a melt flow rate MFR5 (190°C, 5 kg) of 0.10 to 3.0 g/10min, determined according to ISO 1 133, a storage modulus of G' (2 kPa) of 600 Pa to 900 Pa, a shear thinning index SHI 2.7/210 of 20 to 50 and the composition has an elongation at break (EB) at -45°C in dependence of the molar comonomer content (mol. CC) of the base resin following the following equation EB [%] ≥ 175 [% / mol%] ⋅ mol. CC [mol%], whereby the elongation at break (EB) is determined according to ISO 527- 1 at a temperature of -45°C and the molar comonomer content (mol. CC) reflects the molar content of alpha-olefin comonomer units in the total content of monomer units of the base resin, an article comprising such a polyethylene composition and the use of such a polyethylene composition for the production of an article.
Abstract translation:本申请涉及一种聚乙烯组合物,其包含基础树脂,其是乙烯与至少一种具有3至12个碳原子的α-烯烃共聚单体的共聚物,所述基础树脂的密度大于940.0kg / m 3且等于或小于 根据ISO 1 183-1:2004确定的952.5kg / m 3,其中该组合物的熔体流动速率MFR5(190℃,5kg)为0.10-3.0g / 10min,根据ISO 1 133测定,a G'(2kPa)的储能模量为600Pa至900Pa,剪切稀化指数SHI2.7 / 210为20至50,组合物在-45℃下的断裂伸长率(EB)根据摩尔 基础树脂的共聚单体含量(摩尔CC)按照以下等式EB [%]≥175[%/ mol%]∙mol。 CC [mol%],其中在-45℃的温度下根据ISO 527-1测定断裂伸长率(EB),共聚单体摩尔含量(mol CC)反映了α-烯烃共聚单体单元的摩尔含量 在基础树脂的单体单元的总含量中,包含这种聚乙烯组合物的制品以及使用这种聚乙烯组合物来制造制品。
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/m 3 and equal to or less than 955.0 kg/m 3 , wherein the composition has a MFR 21 of 1.7 to 7.0 g/10 min and a FRR 21/5 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用途的聚乙烯组合物,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, 其中所述组合物具有1.7至7.0克/ 10分钟的MFR 21和大于10至100的FRR 21/5。 等于或小于40的聚乙烯组合物,以及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的存在下在第一回路反应器中聚合乙烯,将第一中间材料转移到第二回路反应器中, 进一步聚合所述第一中间材料以获得第二中间材料并将所述第二中间材料转移至气相反应器,将乙烯和共聚单体供给至气相反应器以获得基础树脂,最后将基础树脂与稳定剂和碳一起挤出 黑色变成聚乙烯 组成。 本发明还涉及用于生产由本发明聚乙烯组合物制成的聚乙烯组合物和制品(优选管)的多阶段方法。 p>
Abstract:
The present invention relates to a catalyst composition comprising a monoester, the compound represented by formula (I) as an internal electron donor, and optionally an additional internal electron donor selected from a group consisting of diesters and diethers, Formula (I) wherein: R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and are independently selected from the group consisting of hydrogen, straight, branched and cyclic alkyl having at most 20 carbon atoms and aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms; R 7 is selected from the group consisting of straight, branched and cyclic alkyl having at most 20 carbon atoms and aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms; and R 8 is selected from the group consisting of aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms. The present invention also relates to a process for preparing said polymerization catalyst composition and to a polymerization catalyst system comprising said catalyst composition, a co- catalyst and optionally an external electron donor. Furthermore, the present invention relates to use of said catalyst composition for polymerization of olefins.
Abstract translation:本发明涉及一种催化剂组合物,其包含单酯,由式(I)表示的作为内电子给体的化合物和任选的另外的选自二酯和二醚的内给电子体,式(I)其中:R 1 R 2,R 3,R 4,R 5和R 6相同或不同,独立地选自氢,直链,支链和环烷基,最多20个碳原子和芳族取代和未取代的碳原子数为6〜20的烃基 ; R 7选自具有至多20个碳原子的直链,支链和环状烷基和具有6至20个碳原子的芳族取代和未取代的烃基; 并且R 8选自具有6至20个碳原子的芳族取代的和未取代的烃基。 本发明还涉及制备所述聚合催化剂组合物和包含所述催化剂组合物,助催化剂和任选的外电子给体的聚合催化剂体系的方法。 此外,本发明涉及所述催化剂组合物用于烯烃聚合的用途。