CATALYST CONTROL OF BROAD/BIMODAL MWD RESIN IN SINGLE REACTOR

PROBLEM TO BE SOLVED: To control the proportion of weight fractions in an olefin resin product having a broad or bimodal molecular-weight distribution by using a replenishing catalyst having at least one kind of metallic component of bimetallic catalyst components together with the bimetallic cataly...

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Hauptverfasser:	TSIEN GRACE ONKEE, SCHREGENBERGER SANDRA DENISE, SHIRODKAR PRADEEP PANDURANG, NOWLIN THOMAS EDWARD
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To control the proportion of weight fractions in an olefin resin product having a broad or bimodal molecular-weight distribution by using a replenishing catalyst having at least one kind of metallic component of bimetallic catalyst components together with the bimetallic catalyst. SOLUTION: A bimetallic catalyst produces a broad or bimodal molecular weight distribution polyolefin resin, whose composition depends upon the ratio of the concentrations of two kinds of catalyst components producing the HMW/LMW components. The replenishing catalyst consisting of a single metal component is added in a proportion necessary to replenish the deficiencies in the amount of the HMW/LMW components. The type of the replenishing catalyst added depends upon whether or not an increase of the HMW or LMW component produced by the bimetallic catalyst is sought. COPYRIGHT: (C)2007,JPO&INPIT