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    • 7. 发明申请
    • Pigment dispersion with polymeric dispersant
    • 颜料分散体与聚合物分散剂
    • US20060014855A1
    • 2006-01-19
    • US10891334
    • 2004-07-14
    • Gary HouseXiaoru WangAnne WyandWanda Swartz
    • Gary HouseXiaoru WangAnne WyandWanda Swartz
    • C08K5/00C03C17/00
    • C09D11/326C09D17/003
    • The invention relates to a pigment dispersion for an ink jet ink composition, the pigment dispersion comprising pigment particles having a median particle size of 200 nm or less, and a polymeric dispersant comprising a random addition copolymer comprising at least one hydrophobic monomer type and at least one hydrophilic monomer type, wherein the polymeric dispersant comprises from 50 weight percent to 80 weight percent of hydrophobic monomers relative to the total weight of the polymeric dispersant, and wherein, when the polymer comprises more than one hydrophobic monomer type, at least 50 weight percent of the hydrophobic monomers relative to the total weight of the hydrophobic monomers is an acrylate comprising an aromatic group. The invention also provides an ink composition and ink jet printing method using the pigment dispersion.
    • 本发明涉及一种用于喷墨油墨组合物的颜料分散体,所述颜料分散体包含中值粒径为200nm以下的颜料颗粒,和包含至少一种疏水单体类型的至少一种无规加成共聚物的聚合物分散体 一种亲水单体类型,其中所述聚合物分散剂包含相对于所述聚合物分散剂的总重量为50重量%至80重量%的疏水单体,并且其中当所述聚合物包含多于一种疏水单体类型时,至少50重量% 的疏水单体相对于疏水单体的总重量是包含芳族基团的丙烯酸酯。 本发明还提供一种使用该颜料分散体的油墨组合物和喷墨印刷方法。