POLYPROPYLENE COMPOSITION

PURPOSE:The titled composition, obtained by incorporating a specific amount of a specific ethylene-propylene copolymer prepared by copolymerization in the presence of a polymerization catalyst consisting of a titanium trichloride catalyst component, organoaluminum compound and a specific Lewis base...

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Bibliographische Detailangaben
Hauptverfasser:	IKEDA TADAO, MAKISHIMA TOKUO, FUJITA YUUJI
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:	PURPOSE:The titled composition, obtained by incorporating a specific amount of a specific ethylene-propylene copolymer prepared by copolymerization in the presence of a polymerization catalyst consisting of a titanium trichloride catalyst component, organoaluminum compound and a specific Lewis base with polypropylene, capable of retaining the transparency, an having improved low-temperature impact resistance. CONSTITUTION:A polypropylene composition, obtained by incorporating 65- 95wt% highly crystalline polypropylene having 0.1-30g/10min melt flow rate (MFR) with (B) 5-35wt% ethylene-propylene copolymer, prepared by copolymerization in the presence of a polymerization catalyst consisting of a catalyst component consisting essentially of titanium trichloride, 1-500mol, based on 1mol titanium trichloride, organoaluminum compound, e.g. diethylaluminum chloride, and 2-60mol%, based on the organoaluminum compound, Lewis base selected from carboxylic acid esters, ethers and ketones, and having 70-85wt% ethylene content.