摘要:
A polyethylene composition particularly suited for producing pipes and films, having the following features: 1) density from 0.945 to 0.955 g/cm 3 , determined according to ISO 1183 at 23°C; 2) ratio MIF/MIP from 23 to 40; 3) MIF from 8.5 to 18 g/10 min.; 4) HMWcopo index from 3.5 to 20; 5) long-chain branching index, LCBI, equal to or greater than 0.45.
摘要:
A novel polyethylene composition is described. The composition is suitable for manufacturing especially stretched bands or tapes, also coined raffia in the art.
摘要:
Polyethylene composition suitable for producing small articles by blow molding, particularly flexible and collapsible tubes, said composition having the following features: 1) density from more than 0.948 to 0.955 g/cm 3 ; 2) ratio MIF/MIP from 12 to 25; 3) MIF from 25 to 40 g/10 min.; 4) Mz from 1000000 to 2000000 g/mol; 5) long-chain branching index, LCBI, equal to or greater than 0.55.
摘要:
A solid catalyst component comprising the product of a process comprising (a) reacting a magnesium alcoholate of formula Mg(OR 1 )(OR 2 ) compound, in which R 1 and R 2 are identical or different and are each an alkyl radical having 1 to 10 carbon atoms, with titanium tetrachloride carried out in a hydrocarbon at a temperature of 50-100°C, (b) subjecting the reaction mixture obtained in (a) to a heat treatment at a temperature of 110°C to 200°C for a time ranging from 3 to 25 hours (c) isolating and washing with a hydrocarbon the solid obtained in (b), said solid catalyst component having a Cl/Ti molar ratio higher than 2.5.
摘要:
A novel polymer composition is described comprising ethylene homopolymers and/or copolymers of ethylene with C 3 -C 8 -alpha-olefins which polymer composition has a density of from 0.940 to 0.949 g/cm 3 , 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年,条件G在190℃和21.6kg,为3至7g / 10min。 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。