COATING COMPOSITION AND CAN TOP

PROBLEM TO BE SOLVED: To provide a coating composition excellent in content contamination resistance and alkali resistance and capable of forming a coated film hardly reducing processability after the elapse of time and a can top.SOLUTION: There is provided a coating composition containing a polyest...

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1. Verfasser:	SATO SYOYA
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES USE OF MATERIALS THEREFOR WOODSTAINS
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a coating composition excellent in content contamination resistance and alkali resistance and capable of forming a coated film hardly reducing processability after the elapse of time and a can top.SOLUTION: There is provided a coating composition containing a polyester resin having an acid value of 30 mgKOH/g or less and glass transition temperature of over 25°C and 40°C or less(A), a polyester resin having acid value of 30 mgKOH/g or less and glass transition temperature of 45 to 85°C (B) and a phenol resin (C). The polyester resin (A) is a resin obtained by reacting polycarboxylic acid (a) and polyol (b).SELECTED DRAWING: Figure 1 【課題】本発明は、耐内容物汚染性および耐アルカリ性が優れ、経時後の加工性が低下し難い塗膜を形成できる塗料組成物および缶蓋の提供を目的とする。【解決手段】酸価３０ｍｇＫＯＨ／ｇ以下、ガラス転移温度２５℃を超えて４０℃以下であるポリエステル樹脂（Ａ）、酸価３０ｍｇＫＯＨ／ｇ以下、ガラス転移温度４５〜８５℃であるポリエステル樹脂（Ｂ）およびフェノール樹脂（Ｃ）を含む塗料組成物。なお、ポリエステル樹脂（Ａ）は、ポリカルボン酸（ａ）とポリオール（ｂ）とを反応させて得られる樹脂である。【選択図】図１