PROCESS FOR PRODUCING A MULTIMODAL POLYOLEFIN COMPOSITION IN AN EXTRUDER

A continuous process for preparing a multimodal polyolefin composition comprising one or more antioxidants, the process comprising preparing a multimodal polyolefin in form of a polyolefin powder having a mass-median-diameter D50 of the polyolefin particles in the range from 300 µm to 2500 µm in a s...

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Bibliographische Detailangaben
Hauptverfasser:	CONSALVI, Marco, MALUCELLI, Decio, BORSOI, Lorenzo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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 continuous process for preparing a multimodal polyolefin composition comprising one or more antioxidants, the process comprising preparing a multimodal polyolefin in form of a polyolefin powder having a mass-median-diameter D50 of the polyolefin particles in the range from 300 µm to 2500 µm in a series of polymerization reactors, mixing the polyolefin powder and an organic peroxide without melting the polyolefin powder, melting and homogenizing the mixture within an extruder device, adding one or more antioxidants to the molten polyolefin composition, homogenizing the combination of molten polyolefin composition and antioxidant to form an antioxidant equipped molten polyolefin composition; and pelletizing the antioxidant equipped molten polyolefin composition.