URETHANE COATING COMPOSITION AND FORMED BODY

• Main Authors: KIURA MASAAKI, MUKUDA TAKAHIRO, SERIZAWA MASASHI, ASAI GAKUBUN, KAMON YOSHIHIRO, KAMBARA RIINA
• Format: Patent
• Language: English; Japanese
• Published: 25.04.2019
• Subjects: ADHESIVES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; 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; PERFORMING OPERATIONS; POLISHES; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS THEREFOR; WOODSTAINS

To provide an urethane coating composition that is capable of keeping various performances, such as scratch resistance and abrasion resistance of a coated film, even under conditions of outdoor use for a long time, for example when used in a vehicle exterior equipment, and a formed body comprising a coated film of the urethane coating composition.SOLUTION: An urethane coating composition contains a polyol (A), a polyisocyanate (B), and a reactive silica particle (C). A mass average molecular weight of the polyol (A) is 100 or more and 800 or less. The reactive silica particle (C) has a functional group that can react with a hydroxyl group or an isocyanate group on its surface.SELECTED DRAWING: None 【課題】車輌外装品等屋外で長時間使用される条件下でも、塗膜の耐擦傷性及び耐磨耗性等の各種性能を維持できるウレタン塗料組成物及び前記ウレタン塗料組成物の塗膜を有する成形体を提供すること。【解決手段】ポリオール（Ａ）、ポリイソシアネート（Ｂ）、及び反応性シリカ粒子（Ｃ）を含有するウレタン塗料組成物であって、前記ポリオール（Ａ）の質量平均分子量が１００以上８００以下であり、前記反応性シリカ粒子（Ｃ）が、表面に水酸基又はイソシアネート基と反応可能な官能基を有するウレタン塗料組成物。【選択図】 なし