Production of a multi-layer paint coating, for motor vehicles, comprises deposition of a cathodic electrophoretic layer comprising an aqueous dispersion prepared using protonated epoxide-amine adducts.
Номер патента: DE10009913A1
Опубликовано: 13-09-2001
Автор(ы): Egon Wegner, Karl-Heinz Grose-Brinkhaus, Wolfgang Bremser
Принадлежит: BASF COATINGS GMBH
Опубликовано: 13-09-2001
Автор(ы): Egon Wegner, Karl-Heinz Grose-Brinkhaus, Wolfgang Bremser
Принадлежит: BASF COATINGS GMBH
Реферат: A process for the production of a multi-layer paint coating on electrically conductive substrates by a wet-on-wet process comprises depositon of a cathodically applied electrophoretic coating comprising an aqueous dispersion prepared by polymerization of an ethylenically unsaturated monomer or mixture of monomers in an aqueous solution of an at least partially protonated epoxide-amine adduct. A process for the production of a multi-layer paint coating on electrically conductive substrates by a wet-on-wet process comprises: (A) depositon of a cathodically applied electrophoretic coating onto the substrate; (B) application of a coating agent that is curable thermally or by thermal and actinic radiation means; (C) hardening the applied paint layers together, optionally with a further overlying layer whereby the cathodic electrodeposition composition is an aqueous dispersion prepared by polymerization of an ethylenically unsaturated monomer or mixture of monomers in an aqueous solution of an at least partially protonated epoxide-amine adduct whereby the epoxide-amine adduct is prepared by reaction of (I) at least one glycidyl ether of a polyphenol that contains on average at least one epoxide group per molecule (II) at least one polyglycidyl ether of a polyol that contains on average more than 1.0 epoxide group per molecule and (III) at least one compound that contains one primary amine group per molecule in an equivalent ratio of (I):(II) of 1.0:0.5-1.0:0.8 and 0.3-0.7 moles of component (III) are added per equivalent of epoxide groups of (I) and (II).
Method of forming a multi-layer paint film
Номер патента: US09764536B2. Автор: Keisuke Kojima,Takeshi Ogawa,Shigeyuki Mizuno,Yasufumi Honda,Takamasa Aoki. Владелец: Honda Motor Co Ltd. Дата публикации: 2017-09-19.