Patent ID: 9365727
Filing Date: 2016-06-14
CPC Classification: C09D,Y10T

Claim Text:
1. A process comprising coating of surfaces of a metallic component having a metallic surface to be formed by at least one forming operation by contacting the metallic surface of the metallic component prior the forming operation with an aqueous composition that contains predominantly organic material, and contains at least one compound each of: A) an organic film-forming polymeric material selected from the group consisting of an ionomeric copolymer or a copolymer chemically related to ionomeric copolymer having the properties of ionomeric copolymers or a corresponding monomer, comonomer, oligomer, cooligomer, polymer, blockcopolymer or an ester, salt or derivate thereof, which all together are constituents of at least 70% by weight of total organic polymeric material, wherein the total organic material has an average acid number in the range from 210 to 300; and a cross-linking agent; and water; wherein the pH of the aqueous composition when applied is in the range from 6 to 10.5, wherein no wax or oil are added to the aqueous composition, wherein the aqueous composition or the ionomeric copolymer or copolymer chemically related to ionomeric copolymer for the aqueous composition or any combination of these are prepared by heating an aqueous copolymeric base composition containing at least one of the organic copolymers and at least one neutralizing agent to temperatures in the range from 50 to 150° C. for a time of at least half a minute, wherein the organic film-forming copolymer as constituent A) to be added to the aqueous composition is a material containing predominantly at least one member selected from the group consisting ethylene naphthalic anhydride copolymer and propylene naphthalic anhydride copolymer, and forming the coated metallic component by at least one forming operation selected from the group consisting of cold-forming, cold-forging, roll-stamping, roll-forming, deep-drawing and wire-drawing.