摘要:
A gas fluidised bed process for the production of copolymers having a density between 0.900 and 0.935, which process comprises copolymerisation of (a) ethylene, (b) propylene and/or 1-butene, and (c) alpha-olefins comprising from 5 to 8 carbon atoms in the gaseous state, in admixture with an inert gas and optionally with hydrogen, in the presence of a catalytic system comprising a cocatalyst consisting of at least 1 organo-metallic compound of a metal of groups II and III of the Periodic Table of Elements and a special solid catalyst.
钛原子,镁原子,固体催化剂成分的制造方法,包括卤原子和内部电子供体,将含有卤化的钛化合物和溶剂的卤化钛化合物溶液 以及镁化合物以获得包含固体产物的浆料,其中在所述步骤中A与C的比率(A / C)为3或更小。 A = A / B(1):包含在所述卤化钛化合物溶液卤化钛化合物的体积(mL)B:包含在所述卤化钛化合物溶液的溶剂体积(mL)C = A / C(2 )A:包含在所述卤化钛化合物溶液卤化钛化合物的体积(mL)C:包含在含有固体产物的浆料的溶剂体积(mL) p>
摘要:
The present invention relates to propylene polymers having a melt flow index in the range from 3.0dg/min to 8.0dg/min that are particularly suited for high- tenacity fibers and yarns and nonwovens. Further the present invention relates to a process for the production of such propylene polymers.
摘要:
A process for producing an olefm-based polymer in a polymerization reactor including a fluidized bed, a disengaging section and a neck connecting the bed and disengaging section, at least one monomer, in the gas phase, in the presence of at least one catalyst containing at least two transition metals, one of the at least two transition metals being Ti, at least one cocatalyst, a composition having at least one compound selected from formula (I), and/or at least one compound selected from formula (II): (R1C02)2 AIOH (I), (R2)xN(R30H)y (II); wherein Rl is a hydrocarbon radical containing from 13 to 25 carbons; R2 is a hydrocarbon radical containing from 14 to 26 carbons; R3 is a hydrocarbon radical containing from 1 to 4 carbons; and x + y = 3, and x has a value of 1 or 2; and wherein the reactor is operated in a condensed mode and the average height of the fluidized bed is maintained above the neck of the polymerization reactor is provided. The reaction product of the process is also provided.
摘要翻译:一种在聚合反应器中生产烯烃聚合物的方法,该聚合反应器包括流化床,分离部分和连接床和脱离部分的颈部,至少一种单体,在气相中,在至少一种含有 至少两种过渡金属,所述至少两种过渡金属中的一种是Ti,至少一种助催化剂,具有至少一种选自式(I)的化合物的组合物和/或至少一种选自式(II)的化合物: (R 1 CO 2)2 AlOH(I),(R2)xN(R30H)y(II); 其中R1是含有13-25个碳原子的烃基; R2是含有14-26个碳原子的烃基; R3是含有1至4个碳的烃基; x + y = 3,x为1或2; 并且其中反应器以冷凝模式操作,并且提供流化床的平均高度保持在聚合反应器的颈部之上。 还提供了该方法的反应产物。
摘要:
Disclosed are procatalyst compositions having an internal electron donor which includes a substituted amide ester and optionally an electron donor component. Ziegler- Natta catalyst compositions containing the present procatalyst compositions exhibit improved catalyst activity and/or improved catalyst selectivity and produce propylene-based olefins with broad molecular weight distribution.
摘要:
Disclosed are procatalyst compositions having an internal electron donor which includes an adamantanedicarboxylate and optionally an electron donor component. Ziegler- Natta catalyst compositions containing the present procatalyst compositions produce propylene-based olefins with broad molecular weight distribution.
摘要:
Blown films and processes of forming the same are described herein. The blown films generally include high density polyethylene exhibiting a molecular weight distribution of from about 1.5 to about 8.0 and a density of from 0.94 g/cc to less than 0.96 g/cc.
摘要:
The present disclosure is directed to an apparatus and process for producing a catalyst composition and a low-fines catalyst composition in particular. A crossflow classification device is used to separate large catalyst particles from catalyst fines, A slurry of a catalyst composition is introduced into the crossflow classification device. A classified catalyst composition is retrieved from a retentate produced as a result of subjecting the catalyst slurry to a crossflow classification process. The solids content of the pre-classified and/or post-classified catalyst slurry is determined by way of NMR spectroscopy. The solids content determination accounts for migration of wash liquid from the catalyst composition and into the slurry liquid phase, The classified catalyst composition has a low-fines content and produces a polyolefin composition with a low polymer fines content.
摘要:
The present invention relates to a catalyst system for the (co) polymerization of propylene consisting of the following components: (A) a solid catalyst component comprising titanium, magnesium, halogen and a 1,3-diether; (B) an organic aluminum compound; and optionally (C) an organic silicon compound.
摘要:
A process for producing a Ziegler-Natta catalyst, the process comprising reacting an organo magnesium compound with a halogenated compound to produce crystalline magnesium halide having an intense diffraction line in an x-ray spectrum thereof at lattice distance within the range of from 2.56 to 3.20 Angstroms and titanating the magnesium halide by mixing the magnesium halide with a titanium compound whereby the titanated magnesium halide has, in an x-ray spectrum thereof, a halo appearing at a lattice distance within the range from 2.56 to 3.30 Angstroms.