Line system for fluids and gases in a fuel cell
AssigneeDegussa AG
InventorsGuido Schmitz, Harald Haeger, Hans Ries, Olivier Farges
Life of this patent
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Abstract
An element of a line system of a fuel cell, where the innermost layer I which is in contact with the medium being conveyed comprises a polyolefin molding composition which is joined to a layer II of an EVOH molding composition and the composite between the layer I and the layer II is produced by the contact surface of the layer I comprising a polyolefin containing functional groups selected from among acid anhydride groups, carboxylic acid groups, N-acyllactam groups, epoxide groups and trialkoxysilane groups. The element can be produced inexpensively and has a good barrier action against the medium being conveyed.
Claims18
An element of a line system of a fuel cell, comprising
- an innermost layer I which (1) is for contact with a medium to be conveyed, (2) comprises a polyolefin molding composition and (3) is joined to a layer II which comprises an EVOH molding composition,
- wherein the polyolefin in the polyolefin molding composition contains at least one functional group selected from the group consisting of acid anhydride groups, carboxylic acid groups, N-acyllactam groups, epoxide groups and trialkoxysilane groups, and
- wherein the innermost layer I is joined to the layer II by a composite produced by a contact surface of the layer I comprising the polyolefin in contact with layer II.
Dependencies are inferred from the claim text.