MULTILAYER HOSE FOR TRANSPORTING HIGH-TEMPERATURE CHEMICAL AND/OR GAS

摘要

A multilayer hose for the transportation of a high-temperature liquid and/or gas chemical comprising at least two or more layers including a layer (a) comprising (A) an aliphatic polyamide and a layer (b) comprising (B) a semi-aromatic polyamide comprising a diamine unit containing an aliphatic diamine unit having a carbon number of 9 to 13 in an amount of 60 mol% or more based on all diamine units and a dicarboxylic acid unit containing a terephthalic acid and/or naphthalenedicarboxylic acid unit in an amount of 50 mol% or more based on all dicarboxylic acid units. The present invention provides a multilayer hose, for the transportation of a high-temperature liquid and/or gas chemical, excellent in hot water resistance, chemical resistance, durability, interlayer adhesion, and liquid and/or gas chemical permeation-preventing property, and particularly excellent in the liquid and/or gas chemical permeation-preventing property at high temperatures.