Patents Assigned to CONTITECH USA, LLC
  • Patent number: 12723149
    Abstract: A multilayer permeation resistant article, such as a fuel transfer hose, includes an elastomeric layer and a polyketone (PK) barrier layer. The elastomeric layer may be directly bonded to the PK barrier layer without an intervening adhesive layer. To facilitate such direct bonding, the elastomeric layer may be formed from a composition including one or more ethylene vinyl acetate elastomer(s). The elastomeric composition may include additional elastomer(s), such as chlorinated polyethylene (CPE), acrylonitrile butadiene rubber (NBR), hydrogenated nitrile rubber (HNBR), or chlorosulfonated polyethylene (CSM). The barrier layer may exhibit a permeation rate of less than 10 g/m2/day. The bonding performance of the elastomeric layer to the PK barrier layer may be characterized by an average load per width of 10 lbf/in or greater.
    Type: Grant
    Filed: November 7, 2023
    Date of Patent: September 1, 2026
    Assignee: CONTITECH USA, LLC
    Inventors: Heath Harris, Thomas George Burrowes