In the multilayer hose for transport of the substance chemistry going on lu00ecquida and / or high temperature gas

摘要

In the multilayer hose for transport of the substance chemistry going on lu00ecquida and / or gas at high temperature.In the multilayer hose for transport of a chemical liquid and / or high temperature gas comprising at least two or more layers including at least a layer (a) comprising (a) an aliphatic polyamide and a layer (b) and (b) a polyamide semi aromu00e1ti CA comprising a diamine unit containing an aliphatic diamine unit with a carbon number of9 to 13 in a quantity of 60 moles% or more, based on all the units diamine, and a unit containing a unit acid acid terephthalic acid and / or naftalenodicarboxu00edlico acid in a quantity of 50 moles% or more, based on all the units acid acid.The present invention provides a multi-layer hose for transport of a chemical liquid and / or gas at high temperature, excellent resistance to hot water, chemical resistance, durability, adhesion property intercamadas and prevention of permeation of sub Stu00e2ncias chemical liquid and / or sodas.And particularly excellent property of preventing the permeation of liquid substances and / or gases at high temperatures.