POLYPROPYLENE RESIN COMPOSITION

PURPOSE:To obtain a polypropylene resin compsn. stable to radiation by compounding a specific hindered phenol antioxidant into a polypropylene resin contg. specified amts. of vinylcycloalkane units and alpha-olefin (except 3C alpha-olefin) units. CONSTITUTION:This polypropylene resin compsn. is obtd...

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Bibliographische Detailangaben
Hauptverfasser:	KURODA KAZUHISA, SADATOSHI HAJIME
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 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:	PURPOSE:To obtain a polypropylene resin compsn. stable to radiation by compounding a specific hindered phenol antioxidant into a polypropylene resin contg. specified amts. of vinylcycloalkane units and alpha-olefin (except 3C alpha-olefin) units. CONSTITUTION:This polypropylene resin compsn. is obtd. by compounding 100 pts.wt. propylene random copolymer contg. at least 2mol% 2-8C (except 3C) alpha-olefin units and 0.001-5.0mmol% vinylcycloalkne units, 0.01-1 pt.wt. hindered phenol antioxidant selected from the group consisting of triethylene glycol bis [3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate], 2,2'-oxamido- bis[ethyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate], octadecyl-3-(3,5-di-t-butyl-4- hydroxyphenyl)propionate, etc.