摘要:
The present invention relates to catalysts systems for the polymerization of olefins CH2═CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising (A) a solid catalyst component comprising Ti, Mg, and halogen (B) an aluminum alkyl compound and (C) a mono or dihalogenated hydrocarbon compound. Said catalyst systems have improved polymerization activity.
摘要:
The present invention relates to catalysts systems for the polymerization of olefins CH2═CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising (A) a solid catalyst component comprising Ti, Mg, and halogen (B) an aluminum alkyl compound and (C) a mono or dihalogenated hydrocarbon compound. Said catalyst systems have improved polymerization activity.
摘要:
New ethylene polymers having broad molecular weight distribution and long-chain branching, above all at high molecular weight fractions; the polymers have strain hardening equal or higher than 1.4 (at constant elongational rate of 0.5 s−1, at 150° C.), branching index g′ equal or lower than 0.9 (at Mw of 2·106 g/mol). The polymers are prepared by using a mixed catalyst system comprising a polymerization catalyst based on a late transition metal component having a tridentate ligand, and a Ziegler polymerization catalyst annealed at a temperature higher than 100° C., for a time of at least 10 minutes.
摘要翻译:新的乙烯聚合物具有宽分子量分布和长链支化,首先是高分子量级分; 聚合物具有等于或高于1.4的应变硬化(在150s的恒定伸长率为0.5s -1,支化指数g'等于或等于0.9)(Mw为2·10 6 g / mol)。 通过使用包含基于具有三齿配体的后过渡金属组分的聚合催化剂和在高于100℃的温度下退火的齐格勒聚合催化剂至少10分钟的混合催化剂体系来制备聚合物 。
摘要:
A method of controlling the polymer composition of an ethylene copolymer in a process for preparing ethylene copolymers by copolymerizing ethylene and at least one other olefin in the presence of a polymerization catalyst system comprising at least one late transition metal catalyst component (A) having a tridentate ligand which bears at least two ortho, ortho′-disubstituted aryl radicals, at least one Ziegler catalyst component (B), and at least one activating compound (C) by varying the polymerization temperature, a process for copolymerizing ethylene and at least one other olefin in the presence of such a polymerization catalyst system comprising utilizing the controlling method, a method for altering the polymer composition of an ethylene copolymer obtained by copolymerizing ethylene and at least one other olefin in the presence of such a polymerization catalyst system by varying the polymerization temperature and a method for transitioning from one ethylene copolymer grade to another by using the method for altering the polymer composition.
摘要:
A novel polymer composition is described comprising ethylene homopolymers and/or copolymers of ethylene with C3-C8-alpha-olefins which polymer composition has a density of from 0.940 to 0.949 g/cm3, a melt index (HLMI) according to DIN EN ISO 1133:2005, condition G at 190° C. and 21.6 kg, of from 3 to 7 g/10 min. and a Hostalen Long Chain Branching Index (HLCBI) of from 3 to 8, and which polymer composition is produced by polymerisation with one or more Ziegler catalysts in a series of at least two polymerization reactors. The new polymer composition can in particular be used for blow moulding of intermediate bulk containers.
摘要翻译:描述了一种新型聚合物组合物,其包含乙烯与C3-C8-α-烯烃的乙烯均聚物和/或共聚物,该聚合物组合物的密度为0.940至0.949g / cm 3,熔体指数(HLMI)符合DIN EN ISO 1133 :2005,条件G为190℃,21.6kg,为3〜7g / 10分钟。 和Hostalen长链支化指数(HLCBI)为3至8,并且该聚合物组合物通过在一系列至少两个聚合反应器中与一种或多种齐格勒催化剂聚合制备。 新的聚合物组合物特别可用于中间散装容器的吹塑。
摘要:
A novel polymer composition is described comprising ethylene homopolymers and/or copolymers of ethylene with C3-C8-alpha-olefins which polymer composition has a density of from 0.940 to 0.949 g/cm3, a melt index (HLMI) according to DIN EN ISO 1133:2005, condition G at 190° C. and 21.6 kg, of from 3 to 7 g/10 min. and a Hostalen Long Chain Branching Index (HLCBI) of from 3 to 8, and which polymer composition is produced by polymerisation with one or more Ziegler catalysts in a series of at least two polymerization reactors. The new polymer composition can in particular be used for blow moulding of intermediate bulk containers.
摘要翻译:描述了一种新型聚合物组合物,其包含乙烯与C3-C8-α-烯烃的乙烯均聚物和/或共聚物,该聚合物组合物的密度为0.940至0.949g / cm 3,熔体指数(HLMI)符合DIN EN ISO 1133 :2005,条件G为190℃,21.6kg,为3〜7g / 10分钟。 和Hostalen长链支化指数(HLCBI)为3至8,并且该聚合物组合物通过在一系列至少两个聚合反应器中与一种或多种齐格勒催化剂聚合制备。 新的聚合物组合物特别可用于中间散装容器的吹塑。
摘要:
Method of polymerizing ethylene with C3-C20-olefine-comonomer, comprising the step of carrying out the olymerization in a single gas phase reactor with a mixed catalyst system herein the catalyst system has a catalyst mileage of higher than 6000 g polymer product/g catalyst.