Patent ID: 8715801
Filing Date: 2014-05-06
Classification: B32B,B60H,F16L,Y10T

Abstract:
1. A hose for transporting refrigerant comprising an inner tube layer having a gas barrier layer and a rubber layer adjacent to an outer surface of the gas barrier layer, wherein: the gas barrier layer is formed using a thermoplastic resin composition comprising a polyamide resin (A) and a modified rubber (B) having an acid anhydride group or an epoxy group, the modified rubber (B) being obtained by modifying a modified raw rubber having an acid anhydride group or an epoxy group with a hydrogen bond-forming compound (C) having a functional group which reacts with the acid anhydride group or the epoxy group and a functional group which is able to form a hydrogen bond with an amide bond or a hydroxyl group; the rubber layer is formed using a rubber composition comprising from 1 to 15 parts by mass of an alkylphenol-formaldehyde resin per 100 parts by mass of a raw rubber and from 30 to 80 parts by mass of a carbon black per 100 parts by mass of the raw rubber, the carbon black having N the raw rubber comprises a BIMS and a copolymer rubber (1) which is a butyl rubber and/or a halogenated butyl rubber, and EPDM; in the raw rubber, a content of the BIMS is from 5 to 40 parts by mass, a total content of the BIMS and the copolymer rubber (1) is from 20 to 80 parts by mass, and a content of the EPDM is from 80 to 20 parts by mass; and there is no adhesive layer between the gas barrier layer and the rubber layer.