Highlightable marking composition, method of highlighting the same, highlightable marking composition kit, and highlighted marking composition complex

• US 7,083,665 B1
• Filed: 10/07/2003
• Issued: 08/01/2006
• Est. Priority Date: 10/07/2003
• Status: Expired due to Fees

• Current Assignee: Sanford LP (Newell Brands Inc.)
• Original Assignee: Sanford LP (Newell Brands Inc.)
• Inventors: Kwan, Vincent Wing Sum, Davies-Smith, Leighton
• Primary Examiner(s): Lorengo, J. A.
• Assistant Examiner(s): Faison, Veronica F.
• Application Number:
  US10/680,362
• Time in Patent Office: 1,029 Days
• Field of Search: 106/31.32, 106/31.28, 106/31.58
• US Class Current: 106/31.32
• CPC Class Codes: C09D 11/037 characterised by the pigment
• CPC Class Codes: C09D 11/17 characterised by colouring agents
• CPC Class Codes: C09D 11/18 specially adapted for ball-point writing instruments
• CPC Class Codes: C09D 11/32 characterised by colouring agents

Abstract

A highlightable ink including a colored pigment and an eradicable colorant; a kit including the highlightable ink and an eradicator solution; an ink complex including a colorless or substantially colorless eradicable dye selected from the group consisting of diarylmethane derivatives, triarylmethane derivatives, and methine dyes, and a colored pigment; and methods of applying an eradicator to at least a portion of a marking made with a highlightable ink, are disclosed herein.

Claims

1. A writing and highlighting system comprising:

a writing instrument containing a marking composition disposed therein; and

an eradicator fluid,

the marking composition comprising an aqueous mixture of a colored pigment and an eradicable dye selected from the group consisting of diarylmethane derivatives,

triarylmethane derivatives, methine dyes, and combinations thereof, wherein said mixture and said colored pigment are different colors.

2. The writing and highlighting system of claim 1, wherein said mixture is green.

3. The writing and highlighting system of claim 1, wherein said colored pigment is red.

4. The writing and highlighting system of claim 1, wherein the color of said colored pigment is substantially unaffected by an oxidizing agent.

5. The writing and highlighting system of claim 1, wherein the color of said colored pigment is substantially unaffected by a change in the pH of said mixture.

6. The writing and highlighting system of claim 1, wherein said colored pigment is present in an amount in a range of about 0.01% to about 20% by weight of the total weight of the composition.

7. The writing and highlighting system of claim 6, wherein said colored pigment is present in an amount in a range of about 0.1% to about 8% by weight of the total weight of the composition.

8. The writing and highlighting system of claim 1, wherein said dye is selected from the group consisting of Auramine O, Basic Yellow 2, Basic Yellow 11, Basic Yellow 13, Basic Yellow 21, Basic Yellow 28, Basic Yellow 29, Basic Yellow 40, Acid Blue 22, Acid Blue 93, Acid Green 5, Basic Blue 8, Basic Blue 15, Basic Blue 20, Basic Blue 26, Basic Fuchsin, Basic Green 4, Ethyl Green, Fast Green Fcf, Food Green 3, Malachite Green, Methyl Blue, Methyl Green, Mordant Blue 3, and combinations thereof.

9. The writing and highlighting system of claim 1, wherein said dye is present in an amount in a range of about 0.01% to about 10% by weight of the total weight of the composition.

10. The writing and highlighting system of claim 9, wherein said dye is present in an amount in a range of about 0.1% to about 6% by weight of the total weight of the composition.

11. The writing and highlighting system of claim 1, wherein the marking composition further comprises a binder resin.

12. The writing and highlighting system of claim 11, wherein said binder resin is selected from the group consisting of polyethylene glycol, polyvinylpyrrolidone and copolymers and salts thereof, polyvinylacetate and copolymers and salts thereof, polyacrylic acid and copolymers end salts thereof, and combinations of the foregoing.

13. The writing and highlighting system of claim 1, wherein said marking composition further comprises an organic solvent.

14. The writing and highlighting system of claim 13, wherein said organic solvent is selected from the group consisting of glycols, ureas, fatty alcohols, dimethylformamide, formamide, dimethylsulfoxide, high molecular weight hydrocarbons, low molecular weight hydrocarbons, and combinations thereof.

15. The writing and highlighting system of claim 13, wherein said solvent is present in an amount in a range of about 5% to about 30% by weight based on the total weight of the composition.

16. The writing and highlighting system of claim 1, wherein said marking composition further comprises an additive selected from the group consisting of pH buffers, surfactants, biocides, anticorrosive agents, sequestering agents, anti-crusting agents, rheology control agents, binder resins, and combinations thereof.

20. The writing and highlighting system of claim 1, wherein the color of said colored pigment is substantially unaffected by a reducing agent.

21. The writing and highlighting system of claim 1, wherein the color of said colored pigment is substantially unaffected by a reducing agent selected from the group consisting of a sulfite reducing agent, a bisulfite reducing agent, and combinations thereof.

22. The writing and highlighting system of claim 1, wherein said eradicator fluid comprises an oxidizing agent.

23. The writing and highlighting system of claim 20 wherein said eradicator fluid comprises a reducing agent.

24. The writing and highlighting system of claim 21, wherein said eradicator fluid comprises a reducing agent selected from the group consisting of a sulfite reducing agent, a bisulfite reducing agent, and combinations thereof.

25. The writing and highlighting system of claim 1, wherein said writing instrument is a pen or a marker.

26. The writing and highlighting system of claim 25, wherein said writing instrument is a pen selected from a ball-point pen and an extruded plastic porous tip pen.

27. The writing and highlighting system of claim 1, wherein the eradicator fluid is disposed in a writing instrument.

17. A method of writing and highlighting, comprising the steps of writing on a substrate with a writing instrument containing an ink comprising an aqueous mixture of a colored pigment and an eradicable dye selected from the group consisting of diarylmethane derivatives, triarylmethane derivatives, methine dyes, and combinations thereof, wherein said mixture and said colored pigment are different colors, and applying an eradicator fluid to at least a portion of said writing, thereby highlighting said portion of the writing by at least substantially eradicating the eradicable dye.

18. The method of claim 17, wherein said substrate is paper.

19. The method of claim 17, wherein the color of said colored pigment is substantially unaffected by a reducing agent selected from the group consisting of a sulfite reducing agent, a bisulfite reducing agent, and combinations thereof.

28. The method of claim 17, wherein the color of said colored pigment is substantially unaffected by a reducing agent.

29. The method of claim 19, wherein said eradicator fluid comprises an agent selected from the group consisting of a sulfite, a bisulfite, and combinations thereof.

30. The method of claim 17, wherein said writing instrument is a pen or a marker.

31. The method of claim 30, wherein said writing instrument is a pen selected from a ball-point pen and an extruded plastic porous tip pen.

32. The method of claim 17, wherein the eradicator fluid is disposed in a writing instrument.

33. A writing and highlighting system comprising:

a writing instrument selected from a pen and a marker containing a marking composition disposed therein; and

an eradicator fluid,

the marking composition comprising (a) an aqueous mixture of a colored pigment present in an amount in a range of about 0.01% to about 50% by weight of the total weight of the composition, wherein the color of said colored pigment is substantially unaffected by a reducing agent selected from the group consisting of a sulfite reducing agent, a bisulfite reducing agent, and combinations thereof, (b) an eradicable dye present in an amount in a range of about 0.01% to about 10% by weight of the total weight of the composition and selected from the group consisting of diarylmethane derivatives, triarylmethane derivatives, methine dyes, and combinations thereof, (c) a binder resin; and

(d) an organic solvent, wherein said mixture and said colored pigment are different colors.