发明名称 OIL-BASED INK COMPOSITION FOR BALL-POINT PEN
摘要 PROBLEM TO BE SOLVED: To provide an oil-based ink composition for a ball-point pen having suppressed defect of dropping the ink in a mass by controlling the inner cohesive force of the ink. SOLUTION: The oil-based ink composition for ball-point pen at least contains a coloring material, a resin and 0.01-1.5 wt.% high-polymer polybutyl vinylal having a polymerization degree of≥900 (calculated molecular weight:≥60,000) and further contains a solvent selected from an alcohol, a polyhydric alcohol and a glycol ether having a vapor pressure of≥0.001 mmHg at 25°C as a main solvent accounting for≥50% of the total solvent. COPYRIGHT: (C)2004,JPO
申请公布号 JP2004107596(A) 申请公布日期 2004.04.08
申请号 JP20020275816 申请日期 2002.09.20
申请人 MITSUBISHI PENCIL CO LTD 发明人 ICHIKAWA HIDETOSHI;SHOJI MIYUKI
分类号 C09D11/18;(IPC1-7):C09D11/18 主分类号 C09D11/18
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