Herberts Gesellschaft MIT Beschrankter Haftung

Wolfgang Bogdan

Hans-Peter Patzschke

Hans-Jurgen Schlinsog

Albrecht Luttenberg

Aqueous, heat-curable coating material, containing as vehicle 85 to 40 weight percent of a mixture of a fatty acid-free, acidic epoxide resin phosphate ester with an acid number of 10 to 150, prepared from an epoxide group-containing polyglycidyl ether and/or a polyglycidyl methacrylate resin with more than 1.3 epoxide groups per molecule and an epoxide equivalent weight of 180 to 5,000 and a phenolic resin-modified, carboxyl group-containing, oil-free polyester with an acid number of 15 to 175 and an OH number of 15 to 175, 0 to 25 weight percent of an epoxide resin graft copolymer with an acid number of 30 to 200, prepared from an epoxide group-free reaction product of fatty acid-free polyglycidyl ethers with more than 1.3 epoxide groups per molecule and an epoxide equivalent weight of 1,000 to 5,000 with .alpha.,.beta.-unsaturated monocarboxylic acids and 5 to 40 weight percent of a fully etherified amineformaldehyde condensation resin and/or a fully etherified phenol-formaldehyde condensation resin with at least 2 reactive sites per molecule; its use for coating substrates, as well as methods for coating objects with these coating materials and objects coated therewith.

Process for applying an aqueous, heat-curable coating to cans

In order to coat hollow bodies, which are open at one end, such as a metal can provided with a bottom, with a lacquer or the like, the hollow bodies are passed in a continuous operating cycle through en electrophoretic immersion bath in such a way, that they are rapidly and completely flooded with immersion bath liquid, so that they can be coated electrophoretically with a wet film in the immersion bath. After a sufficiently long coating time, the hollow bodies are lifted out of the immersion bath and the immersion bath liquid, contained in them, is poured out. The hollow bodies, so coated, are carried at a distance from each other to a drying kiln, in which they are dried, whereupon they can be printed or labelled.

Growing community of inventors

Wuppertal, Germany

Wolfgang Bogdan