processo de polimerização em solução em pressão média de polietileno em reator duplo usando um catalisador de fosfinimina, pelìcula soprada de polietileno de baixa densidade linear, e copolìmero de etileno e pelo menos uma olefina c3-12

processo de polimerização em solução em pressão média de polietileno em reator duplo usando um catalisador de fosfinimina, pelìcula soprada de polietileno de baixa densidade linear, e copolìmero de etileno e pelo menos uma olefina c3-12

A dual reactor process for the solution (co)polymerization of ethylene uses a catalyst having a phosphinimine ligand in each of the two reactors. In a preferred embodiment, the two reactors are operated at different temperatures and/or with different cocatalyst systems (such as "alumoxanes"...

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Bibliographische Detailangaben
1. Verfasser: STEPHEN JOHN BROWN
Format: Patent
Sprache:por
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
GENERAL PROCESSES OF COMPOUNDING
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Beschreibung
Zusammenfassung:A dual reactor process for the solution (co)polymerization of ethylene uses a catalyst having a phosphinimine ligand in each of the two reactors. In a preferred embodiment, the two reactors are operated at different temperatures and/or with different cocatalyst systems (such as "alumoxanes" and "ionic activators") for the preparation of linear low density polyethylene ("LLPDE") having a broad molecular weight distribution. Certain LLDPE polymers of this invention have an outstanding balance of physical properties (high dart impact strength and tear strength) excellent optical properties and excellent processability.