POLYMERZUSAMMENSETZUNG, VERFAHREN ZU IHRER HERSTELLUNG UND DARAUS HERGESTELLTE FILME

This invention concerns process for producing polyethylene compositions, films prepared thereof and process for the preparation of the films. The process comprises subjecting ethylene, optionally hydrogen and comonomers to polymerization or copolymerization reactions in a multistage polymerization....

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Hauptverfasser:	LEHTINEN, ARJA, SALO, EIJA, HOKKANEN, HARRI, KALLIO, KALLE, KNUUTTILA, HILKKA, MYHRE, OLE-JAN, SKAR, MERETE, KINNUNEN, ESA
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Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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creator	LEHTINEN, ARJA SALO, EIJA HOKKANEN, HARRI KALLIO, KALLE KNUUTTILA, HILKKA MYHRE, OLE-JAN SKAR, MERETE KINNUNEN, ESA
description	This invention concerns process for producing polyethylene compositions, films prepared thereof and process for the preparation of the films. The process comprises subjecting ethylene, optionally hydrogen and comonomers to polymerization or copolymerization reactions in a multistage polymerization. At least one polymerization stage is conducted essentially in the absence of hydrogen. The polymerization reactions are carried out in the presence of a single-site catalyst capable of forming a composition comprising a low molecular weight component with MFR2 of at least 10 g/10 min and a density higher than the density of the composition and a high molecular weight component. The melt flow rate of the composition is in the range MFR2 =0.1-5.0 g/10 min and the density of the composition is 915-960 kg/m
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The process comprises subjecting ethylene, optionally hydrogen and comonomers to polymerization or copolymerization reactions in a multistage polymerization. At least one polymerization stage is conducted essentially in the absence of hydrogen. The polymerization reactions are carried out in the presence of a single-site catalyst capable of forming a composition comprising a low molecular weight component with MFR2 of at least 10 g/10 min and a density higher than the density of the composition and a high molecular weight component. The melt flow rate of the composition is in the range MFR2 =0.1-5.0 g/10 min and the density of the composition is 915-960 kg/m<3 . 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The process comprises subjecting ethylene, optionally hydrogen and comonomers to polymerization or copolymerization reactions in a multistage polymerization. At least one polymerization stage is conducted essentially in the absence of hydrogen. The polymerization reactions are carried out in the presence of a single-site catalyst capable of forming a composition comprising a low molecular weight component with MFR2 of at least 10 g/10 min and a density higher than the density of the composition and a high molecular weight component. The melt flow rate of the composition is in the range MFR2 =0.1-5.0 g/10 min and the density of the composition is 915-960 kg/m<3 . 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The process comprises subjecting ethylene, optionally hydrogen and comonomers to polymerization or copolymerization reactions in a multistage polymerization. At least one polymerization stage is conducted essentially in the absence of hydrogen. The polymerization reactions are carried out in the presence of a single-site catalyst capable of forming a composition comprising a low molecular weight component with MFR2 of at least 10 g/10 min and a density higher than the density of the composition and a high molecular weight component. The melt flow rate of the composition is in the range MFR2 =0.1-5.0 g/10 min and the density of the composition is 915-960 kg/m<3 . The invention makes it possible to produce polyethylene compositions for manufacturing films with a good balance between optical and mechanical properties.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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subjects	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
title	POLYMERZUSAMMENSETZUNG, VERFAHREN ZU IHRER HERSTELLUNG UND DARAUS HERGESTELLTE FILME
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