REFRIGERANT TRANSPORT HOSE

A refrigerant transport hose excellent in both durability and barrier properties is provided.The refrigerant transport hose 10 has a barrier layer formed from a resin composition containing a polymer component as an innermost layer. The polymer component contains a polyamide resin (A) and a polyolef...

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Bibliographische Detailangaben
Hauptverfasser:	HATANAKA Kota, KATAOKA Hisataka
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM LIGHTING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THEIR PREPARATION OR CHEMICAL WORKING-UP THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A refrigerant transport hose excellent in both durability and barrier properties is provided.The refrigerant transport hose 10 has a barrier layer formed from a resin composition containing a polymer component as an innermost layer. The polymer component contains a polyamide resin (A) and a polyolefin-based elastomer (B). The innermost layer is to be in direct contact with a refrigerant and an oil flowing in the refrigerant transport hose.The polymer component further contains a block copolymer (C) having a structure in which a polyamide block is grafted to a polyolefin skeleton. The content of the block copolymer (C) is 5 to 45 parts by mass with respect to 100 parts by mass of the polymer component. The total content of the polyolefin-based elastomer (B) and the block copolymer (C) is less than 70 parts by mass with respect to 100 parts by mass of the polymer component. The block copolymer (C) has bimodal melting peaks in differential scanning calorimetry (DSC). The melting peak temperature on the low temperature side is 85°C or more, and the melting peak temperature on the high temperature side is 200°C or more.