Patent ID: 9175170
Filing Date: 2015-11-03
Classification: C08K,C09D,C23C,Y02T,Y10T

Abstract:
1. A process comprising contacting a metallic surface that is at least one of clean, pickled, cleaned or pretreated with an aqueous composition having a solids content to form a film on the metallic surface to form a coated substrate, which is then dried to partly or completely compact the formed dried film, wherein the aqueous composition has a pH of from 4 to 9.5 and is largely or completely free of chromium(VI) compounds, and comprises water and: wherein said organic film-forming agent further comprises at least one member selected from the group consisting of acrylic-polyester-polyurethane copolymer, acrylic-polyester-polyurethane-styrene copolymer, acrylic acid ester, acrylic acid ester-methacrylic acid ester, optionally with at least one of free acids or acrylonitrile, ethylene-acrylic mixture, ethylene-acrylic copolymer, ethylene-acrylic-polyester copolymer, ethylene-acrylic-polyurethane copolymer, ethylene-acrylic-polyester-polyurethane copolymer, ethylene-acrylic-polyester-polyurethane-styrene copolymer, ethylene-acrylic-styrene copolymer, polyester resins with free carboxyl groups combined with melamine-formaldehyde resins, a synthetic resin mixture or copolymer based on acrylate and styrene, a synthetic resin mixture or copolymer based on styrene-butadiene, a synthetic resin mixture or copolymer of acrylate and epoxide, an acrylic-modified polyester containing carboxyl groups together with melamine-formaldehyde and ethylene-acrylic copolymer, polycarbonate-polyurethane, polyester-polyurethane, styrene, styrene-vinyl acetate, vinyl acetate, vinyl ester and vinyl ether;