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:
Feb. 15, 2005
Filed:
Jul. 14, 2003
Atsushi Funaki, Chiba, JP;
Naoko Sumi, Chiba, JP;
Eiichi Nishi, Chiba, JP;
Noriyuki Isobe, Yamaguchi, JP;
Tomoharu Nishioka, Yamaguchi, JP;
Koji Nakamura, Yamaguchi, JP;
Atsushi Funaki, Chiba, JP;
Naoko Sumi, Chiba, JP;
Eiichi Nishi, Chiba, JP;
Noriyuki Isobe, Yamaguchi, JP;
Tomoharu Nishioka, Yamaguchi, JP;
Koji Nakamura, Yamaguchi, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A multi-layer hose having a multi-layer structure comprising an inner layer (I) made of a fluorocopolymer and an outer layer (II) made of a polyamide resin, wherein the fluorocopolymer constituting the inner layer (I) is a fluorocopolymer which comprises polymerized units (a) based on tetrafluoroethylene, polymerized units (b) based on ethylene and polymerized units (c) based on itaconic anhydride and/or citraconic anhydride, wherein the molar ratio of (a)/(b) is from 20/80 to 80/20 and the molar ratio of (c)/((a)+(b)) is from 1/10,000 to 5/100 and which has a volume flow rate of from 1 to 1,000 mm/sec., and the polyamide resin constituting the outer layer (II) is polyamide 11 and/or polyamide 12, which satisfies a condition of (terminal amino group concentration)/(terminal carboxyl group concentration)>1.