Polymer composition containing propylene block copolymer

Polymer composition containing:A. 100-40 wt. % of a propylene block copolymer, with a melt index of at least 1.0 dg/min (230° C., 16 kg) and containing block a1 of propylene monomer units and optionally ethylene monomer units, and block a2 of propylene monomer units and ethylene monomer units;B. 0-3...

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Bibliographische Detailangaben
Hauptverfasser:	N.J.J. AELMANS, M.J.H. BULTERS, H.A.J. SCHEPENS
Format:	Patent
Sprache:	eng
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:	Polymer composition containing:A. 100-40 wt. % of a propylene block copolymer, with a melt index of at least 1.0 dg/min (230° C., 16 kg) and containing block a1 of propylene monomer units and optionally ethylene monomer units, and block a2 of propylene monomer units and ethylene monomer units;B. 0-30 wt. % of an impact modifier;C. 0-50 wt. % of filler, andD. 0.1-10 parts per 100 parts A1 of ultra high molecular weight polypropylene. These polymer compositions are useful for injection molding large parts at high injection rates without exhibiting surface defects.