Multilayer pipe for hydrocarbon-containing fluids
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United States of America Patent
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Issued Date -
Oct 10, 2002
app pub date -
Feb 27, 2002
filing date -
Apr 10, 2001
priority date (Note) -
Abandoned
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Abstract
A multilayer pipe for hydrocarbon-containing fluids, particularly fluids for internal combustion engines, includes at least four coextruded layers, wherein a first layer contains essentially polyamide and a second layer contains essentially a polyolefin copolymer. For improving the diffusion blocking capability, particularly relative to gasoline, and a higher thermal stability, a third layer contains essentially a thermoplastic polyester and a fourth layer contains essentially a thermoplastic etherester elastomer (TEEE) or a thermoplastic polyester elastomer.
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