PROCESS FOR THE PREPARATION OF A COLORED POLYPROPYLENE

PROCESS FOR THE PREPARATION OF A COLORED POLYPROPYLENE

A process for the preparation of a propylene polymer containing a coloring agent in an amount ranging from 0.2 to 30 ppm referred to the weight of propylene polymer, including the steps of: a) providing a solid ZN catalyst component made from or containing Mg, Ti, halogen and an internal electron do...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BRITA, DIEGO, CAVALIERI, CLAUDIO
Format: Patent
Sprache:eng
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
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:A process for the preparation of a propylene polymer containing a coloring agent in an amount ranging from 0.2 to 30 ppm referred to the weight of propylene polymer, including the steps of: a) providing a solid ZN catalyst component made from or containing Mg, Ti, halogen and an internal electron donor compound, wherein the Ti being in an amount ranging from 0.1 to 10% of the total weight of solid catalyst component; b) providing a coloring agent made from or containing at least a pigment; c) mixing the ZN catalyst particles and the coloring agent in a liquid hydrocarbon medium, thereby obtaining a slurry and d) feeding the slurry to a polymerization reactor and subjecting the reactor to polymerization conditions, thereby yielding the propylene polymer.