CATIONIC ELECTRO-DEPOSITION COATING COMPOSITION

• Main Authors: IIJIMA HIDEMOTO, ITO DAISAKU, YOSHIKAWA YUJI
• Format: Patent
• Language: English; Japanese
• Published: 05.11.2020
• Subjects: ADHESIVES; APPARATUS THEREFOR; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide a cationic electro-deposition coating composition excellent in corrosion resistance and finishing property of an edge part and a flat part even in a thin film, and a coated article excellent in various coated film performances.SOLUTION: A cationic electro-deposition coating composition contains an amino group-containing epoxy resin (A), a blocked polyisocyanate compound (B) and epoxy resin crosslinked particles (C), in which 0.1-40 pts.mass of the epoxy resin crosslinked particles (C) is contained based on the solid content total mass of the resin (A) and the compound (B), and a number average molecular weight of the epoxy resin crosslinked particles (C) is less than 100,000.SELECTED DRAWING: None 【課題】薄膜においてもエッジ部と平面部の防食性及び仕上がり性に優れたカチオン電着塗料組成物、並びにこれらの諸塗膜性能に優れた塗装物品を提供すること。【解決手段】アミノ基含有エポキシ樹脂（Ａ）、ブロック化ポリイソシアネート化合物（Ｂ）、及びエポキシ樹脂架橋粒子（Ｃ）を有するカチオン電着塗料組成物であって、該樹脂（Ａ）及び化合物（Ｂ）の固形分合計質量を基準として、エポキシ樹脂架橋粒子（Ｃ）が、０．１〜４０質量部含有し、かつエポキシ樹脂架橋粒子（Ｃ）の数平均分子量が１００，０００未満であることを特徴とするカチオン電着塗料組成物。【選択図】なし