Inks for high speed durable inkjet printing
AssigneeEastman Kodak Company
InventorsThomas B. Brust, Paul D. Yacobucci, Yongcai Wang, Catherine A. Falkner, Thanhchau T. Nguyen
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Abstract
An inkjet ink composition comprising water, and at least one water-dispersible polyurethane/urea polymer having at least a first soft segment formed from a polyol prepolymer and at least a second soft segment formed from a polyamine prepolymer, wherein the polyol prepolymer forms urethane bonds in the polyurethane/urea and the polyamine prepolymer forms urea bonds in the polyurethane/urea, and further wherein at least about 4% by weight of the combined soft segments is formed by polyamine prepolymers that form urea bonds in the polyurethane/urea polymer.
Claims14
An inkjet ink composition comprising:
- (A) water;
- and
- (B) at least one water-dispersible polyurethane/urea polymer having at least a first soft segment formed from a polyol prepolymer and at least a second soft segment formed from a polyamine prepolymer, wherein the polyol prepolymer forms urethane bonds in the polyurethane/urea and the polyamine prepolymer forms urea bonds in the polyurethane/urea, and further wherein at least about 4%by weight of the combined soft segments is formed by polyamine prepolymers that form urea bonds in the polyurethane/urea polymer, and
- (C) a pigment;
- wherein the first and second soft segments are formed from prepolymers having ester, carbonate, or ether linkages and having molecular weights above about 300 and below about 3000, the polyurethane/urea polymer has an acid number between 50 and 150 , and the viscositly of the ink is less than 3.0 centipoise at 25 degrees Celsius.
Dependencies are inferred from the claim text.