Hose for automotive fuel piping
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United States of America Patent
Stats
-
Dec 31, 1996
Grant Date -
N/A
app pub date -
Oct 12, 1995
filing date -
Oct 17, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A hose for automotive fuel piping has an inner layer formed of a molding of a terpolymeric fluoro-resin prepared from tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride, so that it can be provided with suitable flexibility. Both the vulcanization composition of an epichlorohydrin rubber or NBR/PVC blend to be disposed outside the inner layer and the vulcanization composition of an NBR rubber or fluororubber to be disposed inside the inner layer contain 1,8-diazablcylco(5.4.0)undecene-7 salts and organophosphonium salts. A satisfactory bonding strength can be attained merely by the vulcanlzation bonding without any surface treatment such as corona discharge on the surface of the inner layer fluororesin.
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