PROCESS FOR MAKING POLYPROPYLENE USING A SELECTIVITY CONTROL AGENT AND AN ACTIVITY LIMITING AGENT

PROCESS FOR MAKING POLYPROPYLENE USING A SELECTIVITY CONTROL AGENT AND AN ACTIVITY LIMITING AGENT

A process for the production of a propylene homopolymer or a propylene-ethylene copolymer includes polymerizing propylene and optional ethylene comonomers in the presence of a catalyst, wherein the catalyst is obtainable by a process of A) providing a Ziegler-Natta procatalyst including contacting a...

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Bibliographische Detailangaben
Hauptverfasser: ZUIDEVELD, Martin, Alexander, KIM, Sang ,Yull, STEENBAKKERS-MENTING, Henrica, Norberta, Alberta, LAGOIDIS, Marios
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
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
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Beschreibung
Zusammenfassung:A process for the production of a propylene homopolymer or a propylene-ethylene copolymer includes polymerizing propylene and optional ethylene comonomers in the presence of a catalyst, wherein the catalyst is obtainable by a process of A) providing a Ziegler-Natta procatalyst including contacting a magnesium-containing support with i) a halogen-containing titanium compound, ii) ethylbenzoate as an activator, iii) and as internal donor an aminobenzoate compound according to formula Bpreferably 4-[benzoyl(methyl)amino]pentan-2-yl benzoate (AB); and B) contacting the Ziegler-Natta procatalyst obtained in step A) with a co-catalyst and a Selectivity Control Agent (SCA) in combination with an Activity Limiting Agent (ALA) to obtain the catalyst.