CATIONIC ELECTRO-DEPOSITION COATING COMPOSITION

To provide a cationic electro-deposition coating composition which enables formation of an aminated epoxy resin obtained by reacting an amine compound and an epoxy resin without introducing an ester bond, enhances flexibility of a coated film, further improves adhesion and blocking property of the c...

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Bibliographische Detailangaben
Hauptverfasser:	NAKASHIMA SARI, INBE TOSHIO, IWAHASHI YUTO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	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
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Beschreibung
Zusammenfassung:	To provide a cationic electro-deposition coating composition which enables formation of an aminated epoxy resin obtained by reacting an amine compound and an epoxy resin without introducing an ester bond, enhances flexibility of a coated film, further improves adhesion and blocking property of the coated film compared to a conventional coated film, and enhances rust prevention.SOLUTION: A cationic electro-deposition coating composition contains an aminated epoxy resin and a blocked polyisocyanate curing agent, where the aminated epoxy resin is an aminated epoxy resin obtained by reacting an amine compound and an epoxy resin, the epoxy resin is a reaction product of a bisphenol type epoxy resin (a1), diglycidyl ether (a2) of a polyalkylene oxide diol compound and a bisphenol compound (a3), a solubility parameter (SP) of the aminated epoxy resin is 10.2-11.5, and an elongation rate after the cationic electro-deposition coating composition is coated onto a steel plate with a dry film thickness of 20 μm, and is baked at 160°C for 15 minutes is 0.1-5.6%.SELECTED DRAWING: None 【課題】本発明では、アミン化合物とエポキシ樹脂を反応させることで得られるアミン化エポキシ樹脂を、エステル結合を導入せずに形成して、塗膜の可撓性を高め、塗膜の密着性と遮断性を従来のものよりも更に向上させて、防錆性を高めたカチオン電着塗料組成物を提供する。【解決手段】本発明は、アミン化エポキシ樹脂およびブロック化ポリイソシアネート硬化剤を含有するカチオン電着塗料組成物であって、前記アミン化エポキシ樹脂が、アミン化合物とエポキシ樹脂を反応させることで得られるアミン化エポキシ樹脂であり、前記エポキシ樹脂が、ビスフェノール型エポキシ樹脂（ａ１）、ポリアルキレンオキサイドジオール化合物のジグリシジルエーテル（ａ２）およびビスフェノール化合物（ａ３）、の反応生成物であり、前記アミン化エポキシ樹脂の溶解性パラメータ（ＳＰ）は１０．２～１１．５であり、前記カチオン電着塗料組成物を鋼板に乾燥膜厚で２０μｍになるように塗装し１６０℃で１５分焼き付けた後の伸び率が０．１～５．６％である、カチオン電着塗料組成物を提供する。【選択図】なし