US 9,809,719 B2
Cationic paint additives
Willibald Paar, Graz (AT); and Roland Feola, Graz (AT)
Assigned to ALLNEX AUSTRIA GMBH, Werndorf (AT)
Appl. No. 14/762,240
Filed by Allnex Austria GmbH, Werndorf (AT)
PCT Filed Feb. 28, 2014, PCT No. PCT/EP2014/053991
§ 371(c)(1), (2) Date Jul. 21, 2015,
PCT Pub. No. WO2014/135466, PCT Pub. Date Sep. 12, 2014.
Claims priority of application No. 13158051 (EP), filed on Mar. 6, 2013.
Prior Publication US 2015/0344706 A1, Dec. 3, 2015
Int. Cl. C09D 5/44 (2006.01); C09D 163/00 (2006.01); C25D 13/06 (2006.01); C09D 5/08 (2006.01)
CPC C09D 5/448 (2013.01) [C09D 5/08 (2013.01); C09D 5/082 (2013.01); C09D 5/4438 (2013.01); C09D 163/00 (2013.01); C25D 13/06 (2013.01)] 18 Claims
 
1. A process for reducing corrosion of base metals comprising coating a surface of a base metal part with a cathodic electrodeposition paint comprising cationic binders,
wherein a cationic paint additive C is added to the electrodeposition paint, said cationic paint additive C being a plastified reaction product of epoxide resins E and amines A, wherein the reaction product of epoxide resins E and amines A further comprises moieties of aromatic or aliphatic dihydroxy or polyhydroxy compounds D, and at least a part of a fatty acid amidoamine plastifier P is incorporated by chemical reaction within the reaction product of epoxide resins E and amines A,
wherein the reaction product of epoxide resins E and amines A optionally further comprises moieties of fatty acids F having from six to thirty carbon atoms, and optionally, one or more olefinic unsaturations.