申请人:Asahi Glass Co., Ltd.
公开号:EP1470910A1
公开(公告)日:2004-10-27
A multi-layer hose having a multi-layer structure comprising an inner layer (I) made of a fluorocopolymer and an outer layer (II) made of a polyamide resin, wherein the fluorocopolymer constituting the inner layer (I) is a fluorocopolymer which comprises polymerized units (a) based on tetrafluoroethylene, polymerized units (b) based on ethylene and polymerized units (c) based on itaconic anhydride and/or citraconic anhydride, wherein the molar ratio of (a)/(b) is from 20/80 to 80/20 and the molar ratio of (c)/((a)+(b)) is from 1/10,000 to 5/100 and which has a volume flow rate of from 1 to 1,000 mm3/sec., and the polyamide resin constituting the outer layer (II) is polyamide 11 and/or polyamide 12, which satisfies a condition of (terminal amino group concentration)/(terminal carboxyl group concentration)>1.
一种具有多层结构的多层软管,包括由含氟聚合物制成的内层(I)和由聚酰胺树脂制成的外层(II),其中构成内层(I)的含氟聚合物是一种含氟聚合物,它包括基于四氟乙烯的聚合单元(a)、(a)/(b)的摩尔比为 20/80 至 80/20,(c)/((a)+(b))的摩尔比为 1/10,000 至 5/100,体积流量为 1 至 1,000 立方毫米/秒。,构成外层(II)的聚酰胺树脂为聚酰胺 11 和/或聚酰胺 12,其满足(末端氨基浓度)/(末端羧基浓度)>1 的条件。