AQUEOUS INKJET INK AND INK SETS
First Claim
1. An aqueous inkjet ink composition having a dynamic viscosity of less than or equal to 5 centipoise (5 mPa-sec) at 25°
- C., and consisting essentially of;
(a) one or more polymer-dispersed pigment colorants in a total amount of at least 0.9 weight % and up to and including 6 weight %, based on the total weight of the aqueous inkjet ink composition;
(b) a composition consisting of one or more compounds represented by the following Structure (I);
HO—
CH2—
CH2—
R
(I)wherein R is a substituted or unsubstituted phenyl group or a substituted or unsubstituted phenoxy group, in a total amount of at least 0.5 weight % and up to and including 2 weight %, based on the total weight of the aqueous inkjet ink composition;
(c) one or more compounds selected from water-soluble humectants, co-solvents, and both water-soluble humectants and co-solvents, in an amount of less than or equal to 20 weight %, based on the total weight of the aqueous inkjet composition,wherein each of the one or more polymer-dispersed pigment colorants has a 50th percentile particle diameter of less than 70 nm and a 95th percentile particle diameter of less than 150 nm, all particle diameters being measured using a dynamic light scattering particle size analyzer.
9 Assignments
0 Petitions
Accused Products
Abstract
Aqueous inkjet ink compositions are useful in inkjet printing processes and can be used individually or as part of an inkjet ink set. Each aqueous inkjet ink composition has a dynamic viscosity of 5 centipoise (5 mPa-sec) or less at 25° C., and consists essentially of: (a) a polymer-dispersed pigment colorant at 0.9-6 weight %; (b) a composition consisting of compounds represented by the following Structure (I):
HO—CH2—CH2—R (I)
wherein R is a substituted or unsubstituted phenyl group or a substituted or unsubstituted phenoxy group, at 0.5-2 weight %; (c) a water-soluble humectant, co-solvent, or both, at than or equal to 20 weight %. Each polymer-dispersed pigment colorant has a 50th percentile particle diameter of less than 70 nm and a 95th percentile particle diameter of less than 150 nm, as measured using a dynamic light scattering particle size analyzer.
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Citations
20 Claims
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1. An aqueous inkjet ink composition having a dynamic viscosity of less than or equal to 5 centipoise (5 mPa-sec) at 25°
- C., and consisting essentially of;
(a) one or more polymer-dispersed pigment colorants in a total amount of at least 0.9 weight % and up to and including 6 weight %, based on the total weight of the aqueous inkjet ink composition; (b) a composition consisting of one or more compounds represented by the following Structure (I);
HO—
CH2—
CH2—
R
(I)wherein R is a substituted or unsubstituted phenyl group or a substituted or unsubstituted phenoxy group, in a total amount of at least 0.5 weight % and up to and including 2 weight %, based on the total weight of the aqueous inkjet ink composition; (c) one or more compounds selected from water-soluble humectants, co-solvents, and both water-soluble humectants and co-solvents, in an amount of less than or equal to 20 weight %, based on the total weight of the aqueous inkjet composition, wherein each of the one or more polymer-dispersed pigment colorants has a 50th percentile particle diameter of less than 70 nm and a 95th percentile particle diameter of less than 150 nm, all particle diameters being measured using a dynamic light scattering particle size analyzer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- C., and consisting essentially of;
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11. An ink set comprising two or more aqueous inkjet ink compositions, each of which independently has a dynamic viscosity of less than or equal to 5 centipoise (5 mPa-sec) at 25°
- C., and each of which aqueous inkjet ink compositions independently consists essentially of;
(a) one or more polymer-dispersed pigment colorants in a total amount of at least 0.9 weight % and up to and including 6 weight %, based on the total weight of the aqueous inkjet ink composition; (b) a composition consisting of one or more compounds represented by the following Structure (I);
HO—
CH2—
CH2—
R
(I)wherein R is a substituted or unsubstituted phenyl group or a substituted or unsubstituted phenoxy group, in a total amount of at least 0.5 weight % and up to and including 2 weight %, based on the total weight of the aqueous inkjet ink composition; (c) one or more compounds selected from water-soluble humectants, co-solvents, and a combination of water-soluble humectants and co-solvents, in an amount of less than or equal to 20 weight %, based on the total weight of the aqueous inkjet composition, wherein each of the one or more polymer-dispersed pigment colorants has a 50th percentile particle diameter of less than or equal to 70 nm and a 95th percentile particle diameter of less than or equal to 150 nm, all particle diameters being measured using a dynamic light scattering particle size analyzer. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
- C., and each of which aqueous inkjet ink compositions independently consists essentially of;
Specification