POLYAMIDE RESIN COMPOSITION FOR BLOW-MOLDED PRODUCTS EXPOSED TO HIGH-PRESSURE HYDROGEN, AND BLOW-MOLDED PRODUCT

The purpose of the present invention is to provide a polyamide resin composition which has excellent blow moldability and melt stability, can suppress a local increase in a residual strain of a molded article, and can provide a blow-molded article suppressing the occurrence of defects even if chargi...

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Bibliographische Detailangaben
Hauptverfasser:	SUZUKI, Shota, OCHIAI, Shinichiro, KOBAYASHI, Sadayuki
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The purpose of the present invention is to provide a polyamide resin composition which has excellent blow moldability and melt stability, can suppress a local increase in a residual strain of a molded article, and can provide a blow-molded article suppressing the occurrence of defects even if charging and discharging of high-pressure hydrogen gas are repeated. Provided is a polyamide resin composition for a blow-molded article exposed to high-pressure hydrogen gas. The polyamide resin composition contains: 70 to 99 parts by weight of a polyamide 6 resin (A); 1 to 30 parts by weight of an impact modifier (B); and 0.005 to 1 parts by weight of a metal halide (C) with respect to a total of 100 parts by weight of the polyamide 6 resin (A) and the impact modifier (B). The polyamide resin composition has a melt tension of 20 mN or more when measured at 260°C and a take-up speed at strand broke of 50 m/min or more when measured at 260°C.