Patent ID: 8729196
Filing Date: 2014-05-20
Classification: C08G,C09D

Abstract:
1. A cationic electrodeposition paint composition comprising: (A) an amino group-containing modified epoxy resin, which is obtained by a method consisting of reacting a modified epoxy resin (A1) with an amino group-containing compound (A2), the modified epoxy resin (A1) being obtained by a method consisting of reacting 1-35 mass % of a diepoxy compound (a1) represented by formula (2): wherein y R with 10-80 mass % of an epoxy resin (a2) having an epoxy equivalent of 170-500 and 10-60 mass % of a bisphenol compound (a3), based on the total solid mass of the diepoxy compound (a1), epoxy resin (a2) and bisphenol compound (a3); (B) a xylene-formaldehyde resin-modified, amino group-containing epoxy resin, which is obtained by reacting an epoxy resin (b1) having an epoxy equivalent of 180-2,500 with a xylene-formaldehyde resin (b2) having phenolic hydroxyl groups and an amino group-containing compound (b3); and (C) a blocked polyisocyanate compound, wherein the total solid mass of the above components (A), (B) and (C) is: 5-60 mass % of the component (A), 5-60 mass % of the component (B) and 10-40 mass % of the component (C).