PA6 ‘Fuel’-filling the Wish to Make Gasoline Engine Tanks Permeation-free

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LANXESS is in process of developing a new blow-moldable, gasoline fuel-resistant polyamide 6 (PA6) grade for high-performance tanks. Used as a replacement to high-density polyethylene (HDPE) and other metal-based tanks (such as aluminum, steel or multi-layer plastic composites), PA6 is compliant with EPA regulations and suppresses fuel permeation in blow-molded tanks effectively. Tanks made of multi-layer plastic composites contain a polar layer of ethylene-vinyl alcohol copolymer (EVOH) as a permeation barrier. Making these layers by means of co-extrusion blow molding process is a complex and costly task too. Steel and aluminum tanks do not give design freedom.
LANXESS experts are also looking for a possibility to make the new polyamide tank material which is resistant to E85 fuels too. PA6-based fuel tanks can find their application in motorcycles, cars, boats, combustion machines, mobile power generators, and more.

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