公开(公告)号：US07063873B2

公开(公告)日：2006-06-20

申请号：US10104493

申请日：2002-03-25

申请人： Gaëlle Bellet ,  Anthony Bonnet ,  Joachim Merziger

发明人： Gaëlle Bellet ,  Anthony Bonnet ,  Joachim Merziger

IPC分类号： B29D22/00 ,  B29D23/00 ,  B32B1/08

CPC分类号： F16L11/06 ,  F02M37/0017 ,  F16L11/12 ,  Y10T428/1352 ,  Y10T428/1383 ,  Y10T428/1393 ,  Y10T428/31732 ,  Y10T428/31757

摘要： A multiplayer tube comprising: an outer layer formed from a polyamide, a layer formed from a copolyamide, a layer formed from an EVOH, a layer formed from a copolyamide, and an inner layer formed from a polyamide, the layers being successive and adhering to one another in their respective contact region. Advantageously, the inner layer is formed by a compound based on a polyamide and electrically conducting carbon black, producing a surface resistivity of less than 106 Ω. The tubes have a very low permeability to petrol, particularly to hydrocarbons and their additives, and in particular to alcohols, such as methanol and ethanol, or to ethers, such as MTBE or ETBE. These tubes also have good resistance to engine lubricating oils as well as fuels.

摘要翻译： 一种多层管，包括：由聚酰胺形成的外层，由共聚酰胺形成的层，由EVOH形成的层，由共聚酰胺形成的层和由聚酰胺形成的内层，所述层连续并粘附到 在他们各自的联系地区。 有利地，内层由基于聚酰胺和导电炭黑的化合物形成，产生小于10 -6Ω的表面电阻率。 这些管对汽油具有非常低的渗透性，特别是对烃及其添加剂，特别是醇，如甲醇和乙醇，或醚，如MTBE或ETBE。 这些管也具有良好的耐发动机润滑油和燃料的能力。