BLOW MOLDING RESINS WITH IMPROVED ESCR

Polyethylene resins having improved environmental stress crack resistance, stiffness and impact resistance is made by a process comprising feeding both a chromium oxide catalyst and a silyl chromium catalyst into a polymerization reactor. The chromium oxide catalyst and the silyl chromium catalyst a...

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Hauptverfasser: ST. JEAN, GUYLAINE, MURE, CLIFF, ROBERT, BREETZ, KAREN, JAKER, STEPHEN, PAUL, JORGENSEN, ROBERT, J
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creator ST. JEAN, GUYLAINE
MURE, CLIFF, ROBERT
BREETZ, KAREN
JAKER, STEPHEN, PAUL
JORGENSEN, ROBERT, J
description Polyethylene resins having improved environmental stress crack resistance, stiffness and impact resistance is made by a process comprising feeding both a chromium oxide catalyst and a silyl chromium catalyst into a polymerization reactor. The chromium oxide catalyst and the silyl chromium catalyst are on separate supports. The chromium oxide catalyst is 25-50 weight percent and the silyl chromium catalyst is 50-75 weight percent of the total weight of catalyst. The catalysts may be added separately or as a single mixture.
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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 BLOW MOLDING RESINS WITH IMPROVED ESCR
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