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    • 71. 发明授权
    • Inkjet printing fluid
    • 喷墨印刷液
    • US08430492B2
    • 2013-04-30
    • US12871982
    • 2010-08-31
    • Catherine A. FalknerThomas B. BrustYongcai WangHwei-Ling YauDouglas R. Robello
    • Catherine A. FalknerThomas B. BrustYongcai WangHwei-Ling YauDouglas R. Robello
    • G01D11/00
    • C09D11/322C09D11/102C09D11/326
    • An inkjet printing fluid composition including water and a water dispersible polyurethane additive of the general formula of (I) wherein Z is the central portion of a monomer unit that is the polymerization product of a diisocyanate; X1—Y1—X1 represents one or more soft segments wherein Y1 represents the central portion of a unit that is the polymerization product of a diamine or diol prepolymer having a molecular weight of greater than 300 Daltons; W is the central portion of one or more units containing an acid group; X2—Y2—X2 represents one or more hard segments wherein Y2 represents the central portion of a unit that is the polymerization product of a C2-C8 diol or diamine having a molecular weight of less than 250 Daltons; and X1, V and X2 can be the same or different and are an —O— or —N— atom; and further wherein the polyurethane additive has a weight average molecular weight of at least 6,000 Daltons and a sufficient number of acid groups to provide an acid number greater than 35, and the one or more X2—Y2—X2 hard segments are present at from 1 wt % to less than 13 wt % of the polyurethane additive. Also disclosed is a method for printing an inkjet image including I) providing an inkjet printing fluid according to the invention; and II) jetting the inkjet printing fluid in the form of ink drops onto a recording element to form a printed image.
    • 一种喷墨印刷液组合物,其包含水和通式(I)的水分散性聚氨酯添加剂,其中Z是作为二异氰酸酯的聚合产物的单体单元的中心部分; X1-Y1-X1表示一个或多个软链段,其中Y1表示作为分子量大于300道尔顿的二胺或二醇预聚物的聚合产物的单元的中心部分; W是含有酸基的一个或多个单元的中心部分; X2-Y2-X2表示一个或多个硬链段,其中Y2表示作为分子量小于250道尔顿的C2-C8二醇或二胺的聚合产物的单元的中心部分; X1,V和X2可以相同或不同,为-O-或-N-原子; 并且其中所述聚氨酯添加剂具有至少6,000道尔顿的重均分子量和足够数量的酸基以提供大于35的酸值,并且所述一个或多个X2-Y2-X2硬链段存在于1 wt%至小于13wt%的聚氨酯添加剂。 还公开了一种用于印刷喷墨图像的方法,包括:I)提供根据本发明的喷墨印刷液; 和II)将墨滴形式的喷墨打印流体喷射到记录元件上以形成打印图像。