Thermoplastic polyurethanes with good fuel resistance

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/42 (2006.01) C08G 18/66 (2006.01)

Patent

CA 2724567

A high molecular weight, thermoplastic polyurethane composition characteristically resistant to aliphatic hydrocarbon fuels, where the polyurethane composition is adapted for use as an aliphatic hydrocarbon fuel barrier in the construction of flexible fuel containers, and the polyurethane is the reaction product of a poly(diethylene adipate) glycol reacted with a non-hindered diisocyanate and an aliphatic chain extender.

L'invention porte sur une composition de polyuréthanne thermoplastique à grande masse moléculaire, ayant une résistance caractéristique aux carburants à base d'hydrocarbures aliphatiques, la composition de polyuréthanne étant adaptée à une utilisation en tant que barrière aux carburants à base d'hydrocarbures aliphatiques lors de la construction de réservoir de carburants souples, et le polyuréthanne étant le produit de la réaction d'un poly(adipate de diéthylène)glycol ayant réagi avec un diisocyanate sans encombrement stérique et un diluant à chaîne aliphatique.

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