Washing composition for indelible marks

• US 6,274,645 B1
• Filed: 09/24/1999
• Issued: 08/14/2001
• Est. Priority Date: 06/29/1998
• Status: Expired due to Term

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Gundlach, Kurt B., Colt, Richard L.
• Primary Examiner(s): Jagannathan, Vasu
• Assistant Examiner(s): Shosho, Callie E.
• Application Number:
  US09/405,680
• Time in Patent Office: 690 Days
• Field of Search: 523/160, 523/161, 106/31.27, 106/31.32, 106/31.4, 106/31.43, 106/31.47, 106/31.49, 106/31.59, 510/174
• US Class Current: 523/160
• CPC Class Codes: C09D 11/20 indelible
• CPC Class Codes: C09D 9/04 with surface-active agents

Abstract

Disclosed is a washing composition which comprises a linear alkyl diphenyl oxide disulfonate compound, a chloride, bromide, iodide, nitrate, acetylacetonate, polyphosphate, squarate, or sulfonate salt or mixtures thereof, and a cosolvent which is propylene glycol, dipropylene glycol, tripropylene glycol, diethylene glycol, glycerine, trimethylolethane, trimethylolpropane, or mixtures thereof.

Claims

1. A process which comprises (a) applying to a substrate in an imagewise pattern an ink composition comprising water, an acid or direct dye, a monovalent salt, a polyquaternary amine compound, and an optional nonionic or cationic surfactant, and (b) thereafter washing the substrate with a washing composition which comprises (i) a linear alkyl diphenyl oxide disulfonate compound, (ii) a salt selected from the group consisting of chloride salts, bromide salts, iodide salts, nitrate salts, acetylacetonate salts, polyphosphate salts, squarate salts, sulfonate salts, and mixtures thereof, and (iii) a cosolvent which is propylene glycol, dipropylene glycol, tripropylene glycol, diethylene glycol, glycerine, trimethylolethane, trimethylolpropane, or mixtures thereof.

2. A process according to claim 1 wherein the linear alkyl diphenyl oxide disulfonate compound is selected from n-decyl diphenyl oxide disulfonate salts, dodecyl diphenyl oxide disulfonate salts, hexadecyl diphenyl oxide disulfonate salts, or mixtures thereof.

3. A process according to claim 1 wherein the linear alkyl diphenyl oxide disulfonate compound is selected from sodium n-decyl diphenyl oxide disultonate, sodium dodecyl diphenyl oxide disulfonate, sodium hexadecyl diphenyl oxide disulfonate, or mixtures thereof.

4. A process according to claim 1 wherein the linear alkyl diphenyl oxide disulfonate compound is present in the washing composition in an amount of at least about 1 percent by weight of the washing composition and in an amount of up to about 25 percent by weight of the washing composition.

5. A process according to claim 1 wherein the chloride, bromide, iodide, nitrate, acetylacetonate, polyphosphate, squarate, or sulfonate salt in the washing composition is a salt of Li⁺, Na⁺, K⁺, Zn²⁺, a quaternary ammonium cation, or mixtures thereof.

6. A process according to claim 1 wherein the chloride, bromide, iodide, nitrate, acetylacetonate, polyphosphate, squarate, or sulfonate salt is present in the washing composition in an amount of at least about 3 percent by weight of the washing composition and in an amount of up to about 50 percent by weight of the washing composition.

7. A process according to claim 1 wherein the cosolvent is present in the washing composition in an amount of at least about 1 percent by weight of the washing composition and in an amount of up to about 60 percent by weight of the washing composition.

8. A process according to claim 1 wherein the washing composition further comprises urea.

9. A process according to claim 8 wherein the urea is present in the washing composition in an amount of at least about 1 percent by weight of the washing composition and in an amount of up to about 50 percent by weight of the washing composition.

10. A process according to claim 1 wherein the washing composition further comprises water.

11. A process according to claim 10 wherein the water is present in an amount of at least about 1 percent by weight of the washing composition and in an amount of up to about 94 percent by weight of the washing composition.

12. A process according to claim 1 wherein the washing composition further comprises a viscosity building component.

13. A process according to claim 12 wherein the viscosity building component is present in the washing composition in an amount of at least about 0.1 percent by weight of the washing composition and in an amount of up to about 5 percent by weight of the washing composition.

14. A process according to claim 1 wherein the substrate is cotton.

15. A process according to claim 1 wherein the polyquaternary amine compound is selected from the group consisting of polydiallyl ammonium compounds, polyquaternized polyvinylamines, polyquaternized polyallylamines, and mixtures thereof.

16. A process according to claim 1 wherein the monovalent salt in the ink composition has a cation selected from the group consisting of alkali metal ions, alkaline earth metal ions, transition metal cations, NH₄⁺, N(CH₃)₄⁺, choline,

wherein R is a long chain alkyl group with 12 carbon atoms, x and y are integers of 0, 1, or 2 representing the number of ethoxy groups, wherein x+y=2, and mixtures thereof.

17. A process according to claim 1 wherein the monovalent salt in the ink composition contains anions selected from the group consisting of chloride, bromide, iodide, sulfate, acetate, propionate, nitrate, perchlorate, acetylacetonate, squarate, and mixtures thereof.

18. A process according to claim 1 wherein the washing composition comprises (i) a linear alkyl diphenyl oxide disulfonate compound, (ii) a salt selected from the group consisting of chloride salts, bromide salts, iodide salts, nitrate salts, acetylacetonate salts, polyphosphate salts, squarate salts, sulfonate salts, and mixtures thereof, and(iii) a cosolvent which is dipropylene glycol, tripropylene glycol, diethylene glycol, glycerine, trimethylolethane, trimethylolpropane, or mixtures thereof.

19. A process according to claim 1 wherein the chloride, bromide, iodide, nitrate, acetylacetonate, polyphosphate, squarate, or sulfonate salt in the washing composition is a salt of choline.

20. A process according to claim 1 wherein the washing composition consists essentially of (a) a linear alkyl diphenyl oxide disulfonate compound, (b) a chloride, bromide, iodide, nitrate, acetylacetonate, polyphosphate, squarate, or sulfonate salt or mixtures thereof, (c) a cosolvent which is propylene glycol, dipropylene glycol, tripropylene glycol, diethylene glycol, glycerine, trimethylolethane, trimethylolpropane, or mixtures thereof, (d) an optional component consisting essentially of urea, (e) an optional component consisting essentially of water, and (f) an optional viscosity building component.

21. A process according to claim 1 wherein the washing composition consists of (a) a linear alkyl diphenyl oxide disulfonate compound, (b) a chloride, bromide, iodide, nitrate, acetylacetonate, polyphosphate, squarate, or sulfonate salt or mixtures thereof, (c) a cosolvent which is propylene glycol, dipropylene glycol, tripropylene glycol, diethylene glycol, glycerine, trimethylolethane, trimethylolpropane, or mixtures thereof, (d) an optional component consisting of urea, (e) an optional component consisting of water, and (f) an optional viscosity building component.

22. A process according to claim 1 wherein the cosolvent in the washing composition is dipropylene glycol.

23. A process according to claim 1 wherein the cosolvent in the washing composition is trimethylolethane.

24. A process according to claim 1 wherein the washing composition comprises (a) a linear alkyl diphenyl oxide disulfonate compound which is sodium n-decyl diphenyl oxide disulfonate, sodium dodecyl diphenyl oxide disulfonate, or sodium hexadecyl diphenyl oxide disulfonate, (b) choline chloride, (c) urea, (d) water, and (e) dipropylene glycol.

25. A process according to claim 24 wherein the linear alkyl diphenyl oxide disulfonate compound is sodium hexadecyl diphenyl oxide disulfonate.