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Fugitive colorant and washable ink compositions
| Details |
Inventors: King, Clifford R.; Hines, John B.;
Assignee: Milliken Research Corporation (Spartanburg, SC)
Primary Examiner: Morris; Theodore
Assistant Examiner: DiNunzio; Mary C.
Attorney, Agent or Firm: Monahan; Timothy J., Petry; H. William
An aqueous solution of a chromophore having at least one sulfonic acid or carboxylic acid functionality and a triethanolamine ethoxylate is provided for a fugitive colorant useful in ink formulations or to temporarily tint textile fibers. Preferably the triethanolamine ethoxylate contains at least nine moles of --CH.sub.2 CH.sub.2 O-- units and is present in a molar excess per acid functionality of the chromophore. |
|
DETAILED DESCRIPTION What we claim is: 1.
A fugitive colorant solution comprising a chromophore, having at least one sulfonic acid or carboxylic acid functionality, in an amount sufficient to provide coloration of said solution and at least one molar equivalent of triethanolamine ethoxylate per acid functionality of said chromophore, said triethanolamine ethoxylate having greater than 25 moles of --CH.
sub.
2 CH.
sub.
2 O-- units.
2.
A fugitive colorant solution according to claim 1 wherein said chromophore comprises 1 to 40 weight percent of said solution.
3.
A fugitive colorant solution according to claim 2 wherein said solution is aqueous.
4.
A fugitive colorant solution according to claim 3 wherein said functionality is sulfonic acid.
5.
A fugitive colorant solution according to claim 1 wherein said chromophore comprises 1 to 10 weight percent of said solution.
6.
A fugitive colorant solution according to claim 5 wherein said chromophore is an acid dye.
7.
A fugitive colorant solution according to claim 6 wherein said solution is aqueous.
8.
A fugitive colorant solution according to claim 2 wherein said chromophore is selected from azo, triphenylmethane, anthraquinone and methine compounds.
9.
A fugitive colorant solution according to claim 8 wherein said solution is aqueous.
10.
A fugitive colorant solution according to claim 9 wherein said functionality is sulfonic acid.
11.
A fugitive colorant solution according to claim 3 wherein said chromophore is Acid Red 52.
12.
A fugitive colorant solution according to claim 1 wherein said chromophore comprises from 5 to 40 weight percent of said solution.
13.
A fugitive colorant solution according to claim 12 wherein said chromophore has covalently bonded polyethyleneoxy substituents, said substituents having at least 10 moles of --CH.
sub.
2 CH.
sub.
2 O-- units.
14.
A fugitive colorant solution according to claim 13 wherein said solution is aqueous.
15.
A fugitive colorant solution comprising from 1 to 40 weight percent of a chromophore having at least one sulfonic acid or carboxylic acid functionality, wherein said chromophore is selected from azo, triphenylmethane, anthraquinone and methine compounds, and from 1 to 30 weight percent of a triethanolamine ethoxylate, said triethanolamine ethoxylate having greater than 9 moles of --CH
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