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A hose for gasohol fuel including an inner layer containing at least one selected from (A) to (D) below and an alcohol-cut off layer including a rubber composition containing a butyl rubber, a hydrated hydrotalcite compound, and a 1,8-diazabicyclo(5,4,0)undecene-7 salt (DBU salt): (A) a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer or a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride-perfluoroalkyl vinyl ether tetrapolymer; (B) a polyamide resin; (C) a fluororubber; and (D) NBR or NBR-PVC.

Titel:	Hose for gasohol fuel
Autor/in / Beteiligte Person:	Sakazaki, Kazushige ; Mori, Hiroyoshi ; Katayama, Kazutaka ; Iio, Shinji ; Ikeda, Hidehito ; Fukaya, Hideji
Link:	View record in USPTO Patent Grants (Volltext)
Veröffentlichung:	2014
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Grants Sprachen: English Patent Number: 8,673,417 Publication Date: March 18, 2014 Appl. No: 12/054075 Application Filed: March 24, 2008 Assignees: Tokai Rubber Industries, Ltd. (Komaki-shi, JP) Claim: 1. A hose for gasohol fuel comprising: a tubular inner layer, and an alcohol-cut off layer formed at an outer periphery of the inner layer, wherein the inner layer includes a composition containing at least one selected from the group consisting of (A), (B), and (D) below, and the alcohol-cut off layer includes a rubber composition containing a butyl rubber, a hydrated hydrotalcite compound, and a 1,8-diazabicyclo(5,4,0)undecene-7 salt (DBU salt): (A) a tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride-perfluoroalkyl vinyl ether tetrapolymer; (B) a polyamide resin; and (D) one of an acrylonitrile-butadiene rubber and a blend material of an acrylonitrile-butadiene rubber and polyvinyl chloride. Claim: 2. The hose for gasohol fuel according to claim 1 , wherein the butyl rubber is at least one of a regular butyl rubber and a halogenated butyl rubber. Claim: 3. The hose for gasohol fuel according to claim 1 , wherein an amount of the hydrated hydrotalcite compound relative to 100 parts by weight of the butyl rubber is in the range of 1 to 15 parts by weight. Claim: 4. The hose for gasohol fuel according to claim 1 , wherein an amount of the DBU salt relative to 100 parts by weight of the butyl rubber is in the range of 0.1 to 3 parts by weight. Claim: 5. The hose for gasohol fuel according to claim 1 , further comprising a layer including a rubber composition containing an acrylonitrile-butadiene rubber, the layer being disposed between the inner layer and the alcohol-cut off layer. Claim: 6. The hose for gasohol fuel according to claim 1 , further comprising a layer including a rubber composition containing the acrylonitrile-butadiene rubber, the layer being disposed at the inner periphery of the inner layer. Claim: 7. The hose for gasohol fuel according to claim 5 , wherein a rubber component in the rubber composition containing the acrylonitrile-butadiene rubber is one of a blend rubber of the acrylonitrile-butadiene rubber and polyvinyl chloride and the acrylonitrile-butadiene rubber alone. Claim: 8. The hose for gasohol fuel according to claim 6 , wherein a rubber component in the rubber composition containing an acrylonitrile-butadiene rubber is one of a blend rubber of the acrylonitrile-butadiene rubber and polyvinyl chloride and the acrylonitrile-butadiene rubber alone. Claim: 9. The hose for gasohol fuel according to claim 1 , wherein the polyamide resin is one of polyamide 6 and polyamide 11. Current U.S. Class: 428/369 Patent References Cited: 4830920 May 1989 Hayashi et al. ; 5374484 December 1994 Kasahara et al. ; 5588469 December 1996 Kakiuchi et al. ; 5941286 August 1999 Fauble et al. ; 6106914 August 2000 Kanbe et al. ; 6303699 October 2001 Naraki et al. ; 6467509 October 2002 Iio et al. ; 6682796 January 2004 Ito et al. ; 6723400 April 2004 Ishio et al. ; 6737480 May 2004 Ikeda et al. ; 6841215 January 2005 Kitamura et al. ; 7431991 October 2008 Verschuere et al. ; 2002/0006491 January 2002 Ito et al. ; 2003/0100677 May 2003 Kitamura et al. ; 2004/0142135 July 2004 Verschuere et al. ; 2004/0214916 October 2004 Patel et al. ; 2005/0003126 January 2005 Ito et al. ; 2005/0147828 July 2005 Verschuere et al. ; 2005/0208248 September 2005 Ilo et al. ; 2006/0042712 March 2006 Iio et al. ; 2006/0128857 June 2006 Otaka et al. ; 2006/0216518 September 2006 Funayama et al. ; 2007/0231522 October 2007 Sakazaki et al. ; 1 096 190 May 2001 ; 1 101 994 May 2001 ; 1 160 496 December 2001 ; 1 704 994 September 2006 ; 5-117478 May 1993 ; 62-21190 March 1994 ; 09-085898 March 1997 ; 10-504369 April 1998 ; 2004-042495 February 2004 ; 2004-301171 October 2004 ; 2005-187584 July 2005 ; 2005-522639 July 2005 ; 2006-266317 October 2006 ; 2006-306053 November 2006 ; 2007-223172 September 2007 ; 2008-001810 January 2008 ; 96/21820 July 1996 ; 03/086756 October 2003 ; 03-086756 October 2003 Other References: Lange's Handbook of Chemistry, ed. Speight, James G., McGraw-Hill, 2005. cited by examiner ; European Search Report dated Aug. 4, 2008; Application No. 08005347.3-2124. cited by applicant ; Japanese Office Action dated Apr. 3, 2012 issued in corresponding Japanese Patent Application No. 2008-008220 (With English Translation, 4 pages). cited by applicant ; Decision to Grant a Patent dated May 21, 2013, issued in corresponding Japanese Patent Application No. 2008-008222, with English translation (6 pages). cited by applicant ; Japanese Office Action dated Jun. 26, 2012, issued in corresponding Japanese Patent Applicatuon No. 2008-008222, with English translation (6 pages). cited by applicant ; Partial english translation only of JP09-085898, previously submitted on Feb. 6, 2012. cited by applicant ; Full english translation only of JP2004-042495, previously submitted on Feb. 6, 2012. cited by applicant ; Japanese Office Action dated Dec. 6, 2011, issued in corresponding Japanese Patent Application No. 2008-008221. cited by applicant ; Decision to Grant a Patent dated Dec. 6, 2011, issued in corresponding Japanese Patent Application No. 2008-008219. cited by applicant Primary Examiner: Jacobson, Michele L Attorney, Agent or Firm: Westerman, Hattori, Daniels & Adrian, LLP

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Hose for gasohol fuel