Coating composition and method for forming coating film

• Main Authors: TONOMURA HIRONORI, CHIGA KOKI, NAKAO YASUSHI
• Format: Patent
• Language: English
• Published: 04.03.2014
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The present invention provides a coating composition that is excellent in application workability, and that can form a cured coating film excellent in coating film performances such as scratch resistance, acid resistance, stain resistance, finished appearance, sagging resistance, etc. Specifically, the present invention provides a coating composition comprising an acrylic resin (A), a polyisocyanate compound (B) and a specific non-aqueous dispersion-type acrylic resin (C), wherein: the acrylic resin (A) is obtainable by copolymerization of a specific secondary hydroxyl group-containing monomer (a-1), a secondary hydroxyl group-containing polyoxyalkylene mono(meth)acrylate monomer (a-2), an isobornyl (meth)acrylate monomer (a-3) and at least one other copolymerizable unsaturated monomer (a-4), the unsaturated monomer (a-1) being used in an amount (mass) greater than that of the monomer (a-2).