COATING COMPOSITION, COATED ARTICLE, AND PROCESS FOR FORMATION OF MULTILAYER COATING FILM

• Main Authors: IMAI, GENJI, KONDOH, MITSURU, ISHIGURO, MASAHARU, HASHIMOTO, JUNPEI, INADA, YUICHI, TOMIZAKI, YASUHIRO
• Format: Patent
• Language: English; French; Japanese
• Published: 03.06.2011
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; 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; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

Provided is a coating composition which can reduce the temperature and time of heating employed in the application step and which can form a coating film having excellent scratch resistance and weather resistance. The coating composition comprises (A) a radical-polymerizable unsaturated compound which is obtained by reacting a caprolactone-modified hydroxyalkyl (meth)acrylate with a polyisocyanate compound and which has an isocyanate equivalent of 300 to 3,800 and (B) a hydroxyl-containing resin. La présente invention concerne une composition pour revêtement permettant de réduire la température et la durée du chauffage employé dans l'étape d'application, et pouvant former une pellicule de revêtement présentant une excellente résistance aux rayures et au vieillissement. La composition pour revêtement comprend (A) un composé insaturé polymérisable par polymérisation radicalaire obtenu par réaction d'un acrylate ou d'un méthacrylate d'hydroxyalkyle modifié par caprolactone avec un polyisocyanate, et dont l'indice d'équivalence isocyanate est compris entre 300 et 3800, et (B) une résine à groupements hydroxyle.