C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 5/44 (2006.01) C08L 63/00 (2006.01) C25D 13/06 (2006.01)
Patent
CA 2128409
The invention relates to a method of coating electrically conductive substrates using cathodically depositable electrodip paints. The invention is notable in that the electrodip paints employed contain crosslinked polymer microparticles which can be prepared by reacting (A) a compound which contains on average more than 1.0 epoxide groups per molecule, or a mixture of such compounds, and (B) a compound which contains not only a group reac- tive toward epoxide groups but also at least one ketimine or aldimine group in the molecule, or a mixture of such compounds to give a noncrosslinked intermediate product (C), which still contains on average at least one epoxide group per molecule, and dispersing this intermediate product in the presence of a Brönsted acid in an aqueous medium.
Gilbert John A.
Heimann Ulrich
Jouck Walter
Ott Gunther
Piontek Susanne
Basf Coatings Aktiengesellschaft
Basf Lacke + Farben Aktiengesellschaft
Fetherstonhaugh & Co.
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