ONEEPACK TYPE HIGHHSOLID COATING COMPOSITION

摘要

PURPOSE:Title composition that is composed of a specific acrylic resin, an amino- formaldehyde resin and an acid catalyst, thus being one-pack type, high-solid, curable at low temperatures, and giving coating films with high durability and hardness. CONSTITUTION:Said composition comprises (A) 100 parts by wt. of an acrylic resin that is prepared by copolymerization of (a) 0-15wt% of acrylic or methacrylic acid, (b) 85-100wt% of acrylate or methacrylate ester having 1-12C alkyl group and, when necessary, (c) less than 50wt%, based on component (b), of other vinyl monomers and has a glass transition point of 20--50 deg.C and a hydroxyl value of 40-280, (B) 20-160 parts of an amino-formaldehyde resin that is etherified with a monohydric alcohol of 1-4 carbon atom, and (C) 0.5-6 parts of a block-type acid catalyst resuling from reaction of toluenesulfonic acid and an epoxy resin, per 100 parts by wt. of component A+B.