DUAL CATALYST SYSTEM FOR PRODUCING LLDPE COPOLYMERS WITH IMPROVED PROCESSABILITY

Disclosed herein are ethylene-based polymers generally characterized by a density from 0.89 to 0.93 g/cm?, a ratio of Mw/Mn from 3 to 6.5, a Mz from 200,000 to 650,000 g/mol, a CY-a parameter at 190 ?C from 0.2 to 0.4, and a reverse short chain branching distribution. The ATREF profile of these poly...

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Bibliographische Detailangaben
Hauptverfasser:	INN, Yongwoo, YANG, Qing, MUNINGER, RANDALL, DING, ERRUN, TSO, Chung Ching, YU, YOULU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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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Beschreibung
Zusammenfassung:	Disclosed herein are ethylene-based polymers generally characterized by a density from 0.89 to 0.93 g/cm?, a ratio of Mw/Mn from 3 to 6.5, a Mz from 200,000 to 650,000 g/mol, a CY-a parameter at 190 ?C from 0.2 to 0.4, and a reverse short chain branching distribution. The ATREF profile of these polymers can have a high temperature peak from 92 to 102 ?C, and a low temperature peak from 18 to 36 ?C less than that of the high temperature peak. These polymers can have comparable physical properties to that of a metallocene-catalyzed LLDPE, but with improved processability, shear thinning, and melt strength, and can be used in blown film and other end-use applications. (FIG. 1)