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US 6,616,976 B2Granted
Process for treating adhesion promoted metal surfaces with epoxy resins
AssigneeShipley Company, L.L.C.
InventorsJoseph R. Montano, James G. Shelnut
Life of this patent
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Abstract
A method for treating a micro-roughened metal surface to improve bonding between the metal surface and a polymer material. The method involves post-treating the micro-roughened conversion coated metal surface with an epoxy resin composition after having formed the micro-roughened conversion coated metal surface with an adhesion promotion composition. The method can be employed in the circuit board industry to improve bonding between innerlayers in a multiplayer circuit board.
Claims18
A method for treating a metal surface comprising:
- a) contacting the metal surface with an adhesion promotion composition comprising a mixture of an acid, oxidizer and corrosion inhibitor to form a micro-roughened conversion coated metal surface;
- and then
- b) contacting the micro-roughened conversion coated metal surface with an epoxy resin composition to prepare the metal surface for receiving a polymer material;
- and then
- c) placing the polymer material on the micro-roughened conversion coated metal surface.
2 more elements
Dependencies are inferred from the claim text.