| 主权项 |
1. An aqueous ink-jet ink comprising a pigment dispersed in an aqueous vehicle, and a polyurethane binder, wherein said binder is different from any polymeric dispersant in the ink, and said binder has a general structure of Formula I:wherein each Y is —(C═O)NHW1NH(C═O)OR2 or
—(C═O)NH(CH2)mSi(R4)3; each X is O, S or NR3; each R1 is C1-C20 alkyl, C6-C40 aryl, polyester, polycarbonate, polyamide or polyurethane, each substituted by one or more hydrophilic groups; each R2 is C1-C20 alkyl, C3-C20 substituted alkyl, C6-C40 aryl or C9-C40 substituted aryl; each R3 is H, C1-C20 alkyl, C3-C20 substituted alkyl, C6-C40 aryl or C9-C40 substituted aryl; each R4 is independently H, C1-C20 alkyl, C3-C20 substituted alkyl, C6-C40 aryl, C9-C40 substituted aryl or OR5; each R5 is independently H, C1-C20 alkyl or C6-C40 aryl; each W1 is independently C4-C20 alkyl, C4-C20 substituted alkyl, C6-C20 cycloalkyl, C6-C20 substituted cycloalkyl, C6-C40 aryl or C9-C40 substituted aryl; each W2 is C1-C20 alkyl or C2-C20 substituted alkyl; m is an integer from 1 to 15; and n is an integer from 1 to 200. |
