Conductive, organic coatings having an optimized polymer system

Details Conductive, organic coatings having an optimized polymer system Conductive, organic coatings having an optimized polymer system

C - Chemistry, Metallurgy

08

G

C08G 18/58 (2006.01) C08G 18/64 (2006.01) C08L 75/08 (2006.01) C09D 163/00 (2006.01) C09J 175/00 (2006.01)

Patent

CA 2674308

A substance for coating metal surfaces, comprising organic resin components that are dissolved or dispersed in an organic solvent, or solvent mixture, having at least the following organic resin components: a) epoxy resin, present as polyether comprising hydroxyl groups, based on a bisphenol epichlorohydrin polycondensation product, b) blocked aliphatic polyisocyanate, c) unblocked aliphatic polyisocyanate, d) at least one reaction component, selected from polyesters comprising hydroxyl groups and poly(meth)acrylates comprising hydroxyl groups. The substance may also comprise at least one conductivity pigment. The invention further provides a method for coating a sheet metal with this substance, the respectively coated sheet metal, and the use thereof.

Produit pour revêtir des surfaces métalliques, qui contient des composants organiques de résine dispersés ou dissous dans un solvant ou mélange de solvants organique. Ce produit contient au moins les composants organiques de résine suivants : a) résine époxy, présente sous forme de polyéther contenant des groupes hydroxyle, à base d'un produit de polycondensation de bisphénol/épichlorhydrine ; b) polyisocyanate aliphatique bloqué ; c) polyisocyanate aliphatique non bloqué ; d) au moins un composant réactif sélectionné parmi les polyesters contenant des groupes hydroxyle et les poly(méth)acrylates contenant des groupes hydroxyle. Le produit peut contenir en plus au moins un pigment conducteur. L'invention concerne en outre un procédé pour revêtir une tôle de ce produit, la tôle revêtue correspondante et son utilisation.

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