PREPARATION OF HIGH DENSITY POLYETHYLENE
PROBLEM TO BE SOLVED: To provide a preparation method of a high density polyethylene in which a polymerization activity per catalyst can be increased and a high density polyethylene with excellent moldability can be obtained. SOLUTION: In a preparation method of a high density polyethylene by a mult...
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creator | MORI SATORU NISHIGORI YUKIO OHORI RYOJI ISAJI YASUHIRO |
description | PROBLEM TO BE SOLVED: To provide a preparation method of a high density polyethylene in which a polymerization activity per catalyst can be increased and a high density polyethylene with excellent moldability can be obtained. SOLUTION: In a preparation method of a high density polyethylene by a multistage slurry polymerization method containing a low molecular weight polyethylene polymerization step and a high molecular weight polyethylene polymerization step, 35% or more of a recovered liquid obtained by solid liquid separation of a polymerization liquid obtained in the final polymerization step is circulated to the low molecular weight polyethylene polymerization step as a polymerization solvent. |
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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 | PREPARATION OF HIGH DENSITY POLYETHYLENE |
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