Smear-resistant ink compositions

A smear-resistant ink composition comprising:

• (a) from about 20% to about 50% of water;
• (b) from about 20% to about 50% of diethylene glycol;
• (c) optionally, from about 0.1% to about 15% of ethylene glycol;
• (d) optionally, from about 0.1% to about 15 of propylene glycol;
• (e) from about 0.1% to about 20% of 2-pyrrolidone;
• (f) optionally, from about 0.1% to about 15% of triethanolamine;
• (g) optionally, from about 0.1% to about 10.0% of a resin that is a styrenated acrylic polymer that has a weight-average molecular weight of about 8500;
• (h) from about 0.1% to about 5% of colorant to yield a detectable fluorescent color when the ink composition is applied to paper;
• (i) from about 0.1% to about 2% of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one;
• (j) optionally, from about 0.1% to about 5.0% of potassium carbonate;
• and
• (k) from about 0.1% to about 2% of 2,4,7,9-tetramethyl-5-decyne-4,7-diol.

A smear-resistant ink composition comprising:

• (a) from about 28.80% to about 35.20% of water;
• (b) from about 34.20% to about 41.80% of diethylene glycol;
• (c) from about 7.20% to about 8.80% of triethanolamine;
• (d) from about 9.00% to about 11.00% of ethylene glycol;
• (e) from about 9.00% to about 11.00% of 2-pyrrolidone;
• (f) from about 1.62% to about 1.98% of a pyrene dye that produces a detectable fluorescent yellow color when the ink composition is applied to paper;
• (g) from about 0.09% to about 0.11% of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one;
• and
• (h) from about 0.09% to about 0.11% of 2,4,7,9-tetramethyl-5-decyne-4,7-diol.

A smear-resistant ink composition comprising:

• (a) about 34.20% to about 41.80% of water;
• (b) about 22.14% to about 27.06% of diethylene glycol;
• (c) about 9.00% to about 11.00% of ethylene glycol;
• (d) about 9.00% to about 11.00% of propylene glycol;
• (e) about 9.00% to about 11.00% of 2-pyrrolidone;
• (f) about 0.09% to about 0.11% of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one;
• (g) about 3.15% to about 3.85% of a resin that is a styrenated acrylic polymer that has a weight-average molecular weight of about 8500;
• (h) about 3.15% to about 3.85% of potassium carbonate;
• (i) about 0.18% to about 0.22% of a rhodamine dye that produces a detectable fluorescent pink color when the ink composition is applied to paper;
• and
• (j) about 0.09% to about 0.11% of 2,4,7,9-tetramethyl-5-decyne-4,7-diol.

A smear-resistant ink composition comprising:

• (a) from about 31.995% to about 39.105% of water;
• (b) from about 28.80% to about 35.20% of diethylene glycol;
• (c) from about 9.00% to about 11.00% of ethylene glycol;
• (d) from about 9.00% to about 11.00% of propylene glycol;
• (e) from about 9.00% to about 11.00% of 2-pyrrolidone;
• (f) from about 0.090% to about 0.110% of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one;
• (g) from about 0.09% to about 0.11% of 2,4,7,9-tetramethyl-5-decyne-4,7-diol;
• (h) from about 1.125% to about 1.375% of a triphenylmethane dye;
• and
• (i) from about 0.90% to about 1.10% of a color brightener that is an anionic stilbene derivative, the triphenylmethane dye and the color brightener producing a detectable fluorescent blue color when the ink composition is applied to paper.

A smear-resistant ink composition comprising:

• (a) from about 31.50% to about 38.50% of water;
• (b) from about 20.475% to about 25.025% of diethylene glycol;
• (c) from about 9.00% to about 11.00% of triethanolamine;
• (d) from about 9.00% to about 11.00% of ethylene glycol;
• (e) from about 9.00% to about 11.00% of propylene glycol;
• (f) from about 9.00% to about 11.00% of 2-pyrrolidone;
• (g) from about 1.62% to about 1.98% of a pyrene dye;
• (h) from about 0.09% to about 0.11% of a mixture of 5-chloro-2-methyl-4-isothiazol in-3-one and 2-methyl-4-isothiazolin-3-one;
• (i) from about 0.09% to about 0.11% of 2,4,7,9-tetramethyl-5-decyne-4,7-diol;
• and
• (j) from about 0.225% to about 0.275% of a triphenylmethane dye, the pyrene dye and the triphenylmethane dye together producing a detectable fluorescent green color when the ink composition is applied to paper.

A smear-resistant ink composition comprising:

• (a) from about 32.022% to about 39.138% of water;
• (b) from about 30.60% to about 37.40% of diethylene glycol;
• (c) from about 9.00% to about 11.00% of ethylene glycol;
• (d) from about 9.00% to about 11.00% of propylene glycol;
• (e) from about 9.00% to about 11.00% of 2-pyrrolidone;
• (f) from about 0.09% to about 0.11% of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isoth iazolin-3-one;
• (g) from about 0.054% to about 0.066% of rhodamine dye;
• (h) from about 0.09% to about 0.11% of 2,4,7,9-tetramethyl-5-decyne-4,7-diol;
• and
• (i) from about 0.144% to about 0.176% of a triphenylmethane dye, the rhodamine dye and the triphenylmethane dye together producing a detectable fluorescent purple color when the ink composition is applied to paper.

A smear-resistant ink composition comprising:

• (a) from about 32.40% to about 39.60% of water;
• (b) from about 29.232% to about 35.728% of diethylene glycol;
• (c) from about 9.00% to about 11.00% of ethylene glycol;
• (d) from about 9.00% to about 11.00% of propylene glycol;
• (e) from about 9.00% to about 11.00% of 2-pyrrolidone;
• (f) from about 0.09% to about 0.11% of a mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one;
• (g) from about 0.09% to about 0.11% of 2,4,7,9-tetramethyl-5-decyne-4,7-diol;
• (h) from about 0.153% to about 0.187% of xanthene dye;
• and
• (i) from about 1.035% to about 1.265% of a coumarin dye, the xanthene dye and the coumarin dye together producing a detectable fluorescent orange color when the ink composition is applied to paper.