POLYPROPYLENE FILM

PURPOSE:To prepare a polypropylene film which is excellent in clarity and impact strength and gives an easily openable bag by compounding a crystalline propylene polymer, an ethylene-propylene copolymer, a fine powder of calcium sodium aluminosilicate, and an ethylenebis(fatty acid amide). CONSTITUT...

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Bibliographische Detailangaben
Hauptverfasser:	KUGIMIYA YOICHI, SHIRAISHI YASUHIRO
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 METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To prepare a polypropylene film which is excellent in clarity and impact strength and gives an easily openable bag by compounding a crystalline propylene polymer, an ethylene-propylene copolymer, a fine powder of calcium sodium aluminosilicate, and an ethylenebis(fatty acid amide). CONSTITUTION:100 pts.wt. compsn. comprising 100 pts.wt. crystalline propylene polymer having a melt flow rate of 3-20g/10min and 3-50 pts.wt. ethylene- propylene copolymer having an ethylene content of 50-90% and a Mooney viscosity ML1+4 (100 deg.C) of 5-50 is compounded with 0.01-1.0 pt.wt. fine powder of calcium sodium aluminosilicate comprising 53-56wt.% SiO2, 25-28wt.% Al2O3, 8-11wt.% Cab, and 4-8wt.% Na2O and having an ignition loss of 4wt.% or lower, a mean particle diameter of 1.0-9.0mum. and a sphericity of 0.85 or higher, and 0.01-0.50 pt.wt. ethylenebis(fatty acid amide) of the formula (wherein R is 17C or lower alkyl).