WATER-ERASABLE AQUEOUS INK COMPOSITION, AND MARKING PEN

PROBLEM TO BE SOLVED: To provide a water-erasable aqueous ink composition which enhances light resistance of a writing line, and suppresses aggravation of water erasability with the elapse of time, and a marking pen using the same.SOLUTION: A water-erasable aqueous ink composition contains a self-di...

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1. Verfasser:	FUKAI TAKU
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ADHESIVES BUREAU ACCESSORIES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES IMPLEMENTS FOR WRITING OR DRAWING INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES TRANSPORTING USE OF MATERIALS THEREFOR WOODSTAINS WRITING OR DRAWING IMPLEMENTS
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a water-erasable aqueous ink composition which enhances light resistance of a writing line, and suppresses aggravation of water erasability with the elapse of time, and a marking pen using the same.SOLUTION: A water-erasable aqueous ink composition contains a self-dispersion type carbon black and a water-soluble resin. The water-soluble resin contains at least one selected from the group consisting of polyvinyl pyrrolidone and polyvinyl alcohol. A content of the water-soluble resin is 1-10 mass% on the basis of the total water-erasable aqueous ink composition. 【課題】筆記線の耐光性を向上し、時間の経過による水消去性の悪化を抑えた、水消去性水性インキ組成物、及びそれを用いたマーキングペンの提供。【解決手段】自己分散型カーボンブラック及び水溶性樹脂を含有する水消去性水性インキ組成物であり、該水溶性樹脂はポリビニルピロリドン及びポリビニルアルコールからなる群より選択される少なくとも１種を含み、該水溶性樹脂の含有量が水消去性水性インキ組成物の全量を基準として１〜１０質量％である。【選択図】図１