CURED ELECTRODEPOSITION COATING FILM AND PROCESS FOR FORMING A MULTI LAYERED COATING FILM
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United States of America Patent
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Issued Date -
Feb 2, 2012
app pub date -
Jul 22, 2011
filing date -
Jul 27, 2010
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a cured electrodeposition coating film which can be applied on a substrate such as an automobile body.—O— within a range of 0.12 to 0.24 mole in molar number based on a resin solid content of 100 g in the cured electrodeposition coating film. The cured electrodeposition coating film is obtained by conducting electrodeposition coating with a cationic electrodeposition coating composition, and then heating and curing it, wherein the cationic electrodeposition coating composition comprises, cationic epoxy resin (A) having bisphenol A-type structure in its molecule, cationic acrylic resin (B) obtainable by reacting an amino group containing compound with a copolymer obtainable by radical-copolymerization of a hydroxy group containing monomer, a glycidyl group containing monomer and another monomer, blocked isocyanate curing agent (C) which is obtained by blocking a cycloaliphatic isocyanate compound with an oxime compound, and a pigment.
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