The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2011
Filed:
Jan. 27, 2005
Tomoharu Nishioka, Ube, JP;
Koji Nakamura, Ube, JP;
Tsuyoshi Iwasa, Ichihara, JP;
Atsushi Funaki, Ichihara, JP;
Eiichi Nishi, Chiyoda-ku, JP;
Koichi Uchida, Ota-ku, JP;
Tsugunori Kashimura, Chiyoda-ku, JP;
Takashi Yamashita, Tsukuba, JP;
Yuji Munesawa, Tsukuba, JP;
Tomoharu Nishioka, Ube, JP;
Koji Nakamura, Ube, JP;
Tsuyoshi Iwasa, Ichihara, JP;
Atsushi Funaki, Ichihara, JP;
Eiichi Nishi, Chiyoda-ku, JP;
Koichi Uchida, Ota-ku, JP;
Tsugunori Kashimura, Chiyoda-ku, JP;
Takashi Yamashita, Tsukuba, JP;
Yuji Munesawa, Tsukuba, JP;
Abstract
A multilayer tube including at least three layers including a layer (a) formed of (A) polyamide 11 and/or polyamide 12, a layer (b) formed of (B) a polyamide (semi-aromatic polyamide) including a dicarboxylic acid unit containing a terephthalic acid and/or naphthalenedicarboxylic acid unit in a proportion of 50 mol % or more based on all dicarboxylic acid units, and a diamine unit containing an aliphatic diamine unit having a carbon number of 9 to 13 in a proportion of 60 mol % or more based on all diamine units, and a layer (c) formed of (C) a fluorine-containing polymer having introduced into the molecular chain thereof a functional group having reactivity with a polyamide-based resin, is provided as a multilayer tube excellent in an alcohol gasoline permeation-preventing property, interlayer adhesion, low-temperature impact resistance, heat resistance and chemical resistance.