Corrosion inhibiting compositions

B - Operations – Transporting – 32 – B

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B32B 15/08 (2006.01) B05D 7/00 (2006.01) B05D 7/14 (2006.01) B05D 7/16 (2006.01) C09D 5/08 (2006.01) C09D 5/24 (2006.01) H01B 1/12 (2006.01)

Patent

CA 2167846

Corrosion resistant metal laminates having, in series, a metal layer, a non-metal conductive layer and a non-conducting layer. The non-metal conductive layer comprises inherently conducting polymer, e.g. polyaniline or polypyrrole, in a non-conducting matrix, e.g. an inorganic matrix such as a silicate, a thermoplastic polymer matrix such as a polyolefin or a vinyl polymer or a thermoset polymer matrix such an epoxy, a polyurethane or a polyimide. Preferred intrinsically conductive polymers include sulfonic acid doped polyaniline. The inherently conducting polymer-containing matrix is preferably strongly adhesive to metal and provides enhanced corrosion resistance to the metal in a variety of corrosive environments such as acidic, alkaline, and salt environments.

Stratifiés métalliques résistant à la corrosion et possédant en série une couche en métal, une couche conductrice non métallique et une couche non conductrice. La couche conductrice non métallique comprend un polymère conducteur, par exemple, polyaniline ou polypyrrole, dans une matrice non conductrice, par exemple, une matrice inorganique, telle qu'un silicate, une matrice polymère thermoplastique, telle qu'une polyoléfine ou un polymère de vinyle ou une matrice polymère thermodurcie, telle qu'époxy, polyuréthane ou polyimide. Les polymères intrinsèquement conducteurs préférés comprennent la polyaniline dopée à l'acide sulfonique. La matrice contenant le polymère intrinsèquement conducteur adhère de préférence fermement au métal et constitue une résistance améliorée à la corrosion dans une variété d'environnements corrosifs, tels que des environnements acides, alcalins ou salins.

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