Stock material or miscellaneous articles – Composite – Of polyamide
Reexamination Certificate
2005-11-08
2005-11-08
Hightower, P. Hampton (Department: 1711)
Stock material or miscellaneous articles
Composite
Of polyamide
C428S411100, C428S475800, C428S476300, C156S060000, C156S325000, C156S326000, C156S327000, C156S330900, C156S331100, C264S171270, C264S173120, C264S173160, C264S176100, C264S297400
Reexamination Certificate
active
06962754
ABSTRACT:
A structure made of a fluoropolymer layer and directly attached to one of its sides a tie layer based on a polyamide which results from the condensation of at least one diacid and at least one diamine of the following formula (1):in which R1represents H or -Z1-NH2and Z1 represents an alkyl, a cycloalkyl or an aryl having up to 15 carbon atoms and R2represents H or -Z2-NH2and Z2 represents an alkyl, a cycloalkyl or an aryl having up to 15 carbon atoms, it being possible for R1and R2to be identical or different. The tie resin may also be a copolymer having polyamide blocks and polyether blocks, the polyamide blocks resulting from condensation of at least one diacid and at least one diamine of formula (1). The invention also relates to a structure comprising a fluoropolymer layer, the tie layer and a substrate layer, respectively, as well as to a structure comprising a tie layer, respectively. This structure may be placed between two substrate layers and may be in the form of a sheet, film, profile or tube. It is particularly useful in the form of a tube for transporting gasoline between the tank and the injection device in motor-vehicle engines.
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XP002193451—Patent Abstract of Japan, JP 59030243 A (Hitachi COndenser KK), 17 fevrier 1996 (Feb. 29, 1996).
Bussi Philippe
Lacroix Christophe
Silagy David
ARKEMA
Hampton Hightower P.
Millen White Zelano & Branigan P.C.
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