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    • 62. 发明授权
    • Aqueous ink composition
    • 水性油墨组合物
    • US5547499A
    • 1996-08-20
    • US443448
    • 1995-05-18
    • Toshimitsu KawasumiHiroaki Ueda
    • Toshimitsu KawasumiHiroaki Ueda
    • C09D11/16C09D11/02
    • C09D11/17
    • An aqueous ink composition is provided which includes an aqueous mixture containing at least a coloring agent, a pigment dispersant, a water-soluble organic solvent and water, and an organic white pigment of an alkylene-bis-melamine derivative represented by the general formula (1): ##STR1## wherein R represents a hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms or an alicyclic group; R1, R2, R3 and R4 are the same or different, each representing a hydrogen atom or a lower alkyl group having 1 to 4 carbon atoms; R1 and R2, or R3 and R4 may form a heterocyclic group together with a nitrogen atom; and X represents a lower alkylene group having 2 to 3 carbon atoms. The aqueous ink composition is particularly useful for writing instruments of direct ink supply type and of wick type.
    • 提供一种水性墨水组合物,其包含至少含有着色剂,颜料分散剂,水溶性有机溶剂和水的水性混合物和由通式(I)表示的亚烷基双 - 三聚氰胺衍生物的有机白色颜料 1):其中R表示氢原子,碳原子数为1〜4的低级烷基或脂环族基团;(1) R 1,R 2,R 3和R 4相同或不同,各自表示氢原子或具有1〜4个碳原子的低级烷基; R1和R2,或R3和R4可以与氮原子一起形成杂环基; X表示碳原子数2〜3的低级亚烷基。 水性油墨组合物特别适用于直接供墨型和油芯型的书写工具。