Ink-jet ink composition containing a colored polyurethane disper

Details Ink-jet ink composition containing a colored polyurethane disper Ink-jet ink composition containing a colored polyurethane disper

1995-10-17

1997-12-23

Niland, Patrick

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

106 19R, 106 20R, 106 22R, 106 22H, 106 20D, 106 19F, 523161, 524591, 524839, 524840, 347 99, 347100, C08J 300, C08K 320, C08L 7500, G01D 1100

Patent

active

057008515

ABSTRACT:
A non-erasable ink-jet composition that is the admixture of (1) an aqueous colored polyurethane dispersion that is the reaction product of (a) a colored urethane prepolymer that is the catalyzed reaction product of at least one polyol; at least one polyisocyanate; at least one internal surfactant; and at least one reactive colorant; wherein the ratio of internal surfactant to polyol and the ratio of NCO groups to total OH groups are predetermined stoichiometric equivalent molar ratios; (b) at least one neutralizing agent; (c) a first aqueous dispersing medium; and (d) at least one chain extender; (2) a second aqueous medium; and (3) at least one humectant; wherein the ink composition has a jettable viscosity from about 1 to about 20 centipoise at about 10.degree. C. to about 45.degree. C.

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Miles Product Brochure "Waterborne Polyurethanes" as excerpted from Advances in Urethane Science and Technology by K.C. Frisch & D. Klempner Editors, vol. 10, pp. 121-162 (1987).

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