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- Nachgewiesen in: USPTO Patent Grants
- Sprachen: English
- Patent Number: 9,815,960
- Publication Date: November 14, 2017
- Appl. No: 14/880868
- Application Filed: October 12, 2015
- Assignees: ContiTech MGW GmbH (Hannoversch-Muenden, DE)
- Claim: 1. A rubber mixture comprising: at least one fluoro rubber; at least one active filler; and, carbon nanotubes.
- Claim: 2. The rubber mixture as claimed in claim 1 , comprising: from 50 to 100 phr of a fluoro rubber or from 50 to 100 phr of a blend made of two or more fluoro rubbers.
- Claim: 3. The rubber mixture as claimed in claim 1 , comprising: from 2 to 70 phr of the at least one active filler.
- Claim: 4. The rubber mixture as claimed in claim 1 , comprising: from 0.1 to 10 phr of carbon nanotubes.
- Claim: 5. The rubber mixture as claimed in claim 1 , further comprising from 0 to 20 phr of inert fillers.
- Claim: 6. The rubber mixture as claimed in claim 1 , further comprising at least one resin.
- Claim: 7. The rubber mixture as claimed in claim 1 , wherein the fluoro rubber is one or more of poly(vinylidene fluoride-co-hexafluoropropylene) (VDF/HFP), poly(vinylidene fluoride-co-hexafluoropropylene-co-tetrafluoroethylene) (TFB), poly(vinylidene fluoride-co-tetrafluoroethylene-co-perfluorinated methyl vinyl ether) (VDF/TFE/PMVE), poly(tetrafluoroethylene-co-propylene) (TFE/P), and poly(vinylidene fluoride-co-chlorotrifluoroethylene) (VDF/CTFE).
- Claim: 8. The rubber mixture as claimed in claim 1 , wherein the fluoro rubber comprises a copolymer or terpolymer where the proportion of fluorine is from 50 to 70%.
- Claim: 9. The rubber mixture as claimed in claim 1 , wherein the rubber mixture comprises no inert fillers, or less than 5 phr of inert filler.
- Claim: 10. The rubber mixture as claimed in claim 1 , wherein the active filler is active carbon black.
- Claim: 11. The rubber mixture as claimed in claim 10 , wherein the iodine number of the active carbon black is from 60 to 300 g/kg in accordance with ASTM D1510, and the DBP number thereof is from 60 to 150 cm 3 /100 g in accordance with ASTM D2414.
- Claim: 12. A hose having a layer structure comprising: an internal layer as barrier layer with respect to aggressive media, which comprises at least one fluoro rubber, at least one active filler, and carbon nanotubes, and an external layer made of a crosslinked rubber mixture.
- Claim: 13. The hose as claimed in claim 12 having no reinforcement layer, wherein the hose consists of an internal layer and an external layer.
- Claim: 14. The hose as claimed in claim 12 , further comprising: a reinforcement layer arranged between the internal layer and the external layer, wherein the reinforcement layer is composed of one or more sublayers.
- Claim: 15. The hose as claimed in claim 12 , wherein the internal layer comprises from 50 to 100 phr of a fluoro rubber or from 50 to 100 phr of a blend made of two or more fluoro rubbers.
- Claim: 16. The hose as claimed in claim 12 , wherein the internal layer comprises from 2 to 70 phr of the at least one active filler.
- Claim: 17. The hose as claimed in claim 12 , wherein the active filler is an active carbon black.
- Claim: 18. The hose as claimed in claim 12 , wherein the internal layer comprises from 0.1 to 10 phr of carbon nanotubes.
- Patent References Cited: 5356681 October 1994 Ichikawa et al. ; 6340511 January 2002 Kanbe et al. ; 2008/0072984 March 2008 Branch ; 10 2011 055 316 May 2013 ; 1 396 670 March 2004 ; 2012/080158 June 2012
- Other References: ASTM Committee D11 on Rubber, “Standard Test Methods for Rubber-Viscosity, Stress Relaxation, and Pre-Vulcanization Characteristics (Mooney Viscometer)”, Designation:D 1646-00, 2000, pp. 1 to 12. cited by applicant ; Deutsches Institut fuer Normung, e.V. (DIN), “Pruefung von Kautschuk und Elastomeren—Bestimmung von Reissfestigkeit, Zugfestigkeit, Reissdehnung und Spannungswerten im Zugversuch”, DIN 53504: Oct. 2009, pp. 1 to 19. cited by applicant ; Deutsches Institut fuer Normung, e.V. (DIN), Elastomere oder thermoplastische Elastomere—Bestimmung der Eindringhaerte—Teil 1: Durometer-Verfahren (Shore-Haerte) (ISO 7619-1:2010), DIN ISO 7619-1, Feb. 2012, pp. 1 to 17. cited by applicant ; Deutsches Institut fuer Normung, e.V. (DIN), “Haertepruefung nach Shore A und Shore D” (Testing of rubber—Shore A and Shore D hardness test), DIN 53505, Aug. 2000, pp. 2 to 5. cited by applicant ; Deutsches Institut fuer Normung, e.V. (DIN), Elastomere oder thermoplastische Elastomere—Bestimmung des Weiterreisswiderstandes—Teil 1: Streifen-, winkel- und bogenfoermige Probekoerper (ISO 34-1:2004), DIN ISO 34-1, Jul. 2004, pp. 1 to 16. cited by applicant ; International Search Report dated Apr. 1, 2014 of international application PCT/EP2014/051985 on which this application is based. cited by applicant ; Byravan, A. et al, “Effect of mineral fillers in improving mechanical properties of FKM vulcanizates”, Rubber World, Feb. 1, 2013, ISSN 0035-9572, 11 pages. cited by applicant
- Primary Examiner: Miggins, Michael C
- Attorney, Agent or Firm: Walter Ottesen, P.A.
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