Hose for refrigerant transportation and production method therefor

Abstract

A hose for refrigerant transportation includes an outer layer, a reinforcing layer, and an inner layer. The outer layer is composed of a resin composition containing elastomer having a polyisobutylene backbone and crosslinked resin. A content of the elastomer having a polyisobutylene backbone in the resin composition is 30 mass % or more and 90 mass % or less with respect to a mass of the resin composition. A content of the crosslinked resin in the resin composition is 10 mass % or more and 70 mass % or less with respect to the mass of the resin composition. A water vapor permeability of the resin composition is 2.0 g·mm/(m2·24 h) or less. A ratio TB100/TB25 of a strength at break TB100 of the resin composition at 100° C. to a strength at break TB25 of the resin composition at 25° C. is from 0.2 to 1.0.

Dependencies are inferred from the claim text.