Color changing compositions

• US 5,352,282 A
• Filed: 06/16/1993
• Issued: 10/04/1994
• Est. Priority Date: 07/31/1992
• Status: Expired due to Term

• Current Assignee: Crayola LLC (Hallmark Cards Incorporated)
• Original Assignee: Binney & Smith Inc.
• Inventors: Miller, Richard E.
• Primary Examiner(s): KLEMANSKI, HELENE G
• Application Number:
  US08/078,722
• Time in Patent Office: 475 Days
• Field of Search: 106/19 R, 106/20 R, 106/20 A, 106/21 R, 106/21 A, 106/22 R, 106/22 B, 106/22 F, 206/459.1
• US Class Current: 106/31.32
• CPC Class Codes: B05D 1/36 Successively applying liquids or other fluent materials, e.g. without intermediate treatment
• CPC Class Codes: B05D 2401/20 Aqueous dispersion or solution
• CPC Class Codes: B05D 2451/00 Type of carrier, type of coating (Multilayers)
• CPC Class Codes: B05D 7/54 No clear coat specified
• CPC Class Codes: B44D 2/00 Special techniques in artistic painting or drawing, e.g. oil painting, water painting, pastel painting, relief painting
• CPC Class Codes: C09D 11/50 Sympathetic, colour changing or similar inks
• CPC Class Codes: C09D 7/00 Features of coating compositions, not provided for in group C09D5/00 driers C09F9/00; Processes for incorporating ingredients in coating compositions

Abstract

A multiple coloring composition system is disclosed whose coloring effect is changed upon treatment with a second coloring composition, once the second coloring composition has been deposited over the first coloring composition. The multiple ink system comprises:

(a) a first aqueous coloring composition comprising a first dye whose coloring ability is destroyed in the presence of a bleach; and

(b) a second aqueous coloring composition comprising from about 1% to about 20% by weight of a bleach; and from about 0.1% to about 12% by weight of a colorant capable of maintaining its characteristic color in the presence of a bleach and/or a pH of about 10 or greater. The multiple coloring composition may further comprise a base in an amount sufficient to elevate the pH of the second aqueous coloring composition to a level of from about 10 to about 12.

Claims

1. A multiple coloring composition system comprising:

(a) a first aqueous coloring composition comprising an amount of a first dye sufficient to produce a workable color changing composition and whose coloring ability is destroyed in the presence of a bleach; and

(b) a second aqueous coloring composition comprising an amount of a bleach sufficient to allow for the erasing of said first aqueous coloring composition, and a second colorant capable of and in an amount sufficient to maintain its characteristic color in the presence of a bleach.

2. The multiple coloring composition system of claim 1, wherein said first dye of said first coloring composition is selected from the group consisting of polymethine dyes and azo dyes.

3. The multiple coloring composition system of claim 1, wherein said first dye of said first coloring composition is selected from the group consisting of Astrazon Blue FRR, Astrazon Brilliant Red 4G, Astrazon Pink FBB, Acid Green 3, Acid Violet 19 and mixtures thereof.

4. The multiple coloring composition system of claim 1, wherein said second colorant of said second coloring composition is selected from the group consisting of pigments and xanthene dyes.

5. The multiple coloring composition system of claim 1, wherein said second colorant of said second coloring composition is selected from the group consisting of Pyranine 120, Acid Red 52, Food Red 14, Basantol Green 910, Acid Red 87, Acid Red 92, pigments, and mixtures thereof.

6. The multiple coloring composition system of claim 1, wherein said bleach is selected from the group consisting of hydrogen sulfide, sodium sulfite, sodium hypochlorite and hydrogen peroxide.

7. A color changing marking kit comprising at least two marking instruments, said first marking instrument containing a first marking composition comprising an amount of a first dye sufficient to produce a workable color changing composition and whose coloring ability is destroyed in the presence of a bleach, and said second writing instrument containing a second marking composition, said second marking composition comprising (1) an amount of a bleach sufficient to allow for the erasing of said first marking composition, and (2) a second colorant capable of and in an amount sufficient to maintain its characteristic color in the presence of a bleach.

8. The color changing marking kit of claim 7, wherein said first dye of said first coloring composition is selected from the group consisting of polymethine dyes and azo dyes.

9. The color changing marking kit of claim 7, wherein said first dye of said first coloring composition is selected from the group consisting of Astrazon Blue FRR, Astrazon Brilliant Red 4G, Astrazon Pink FBB, Acid Green 3, Acid Violet 19 and mixtures thereof.

10. The color changing marking kit of claim 7, wherein said second colorant of said second coloring composition is selected from the group consisting of pigments and xanthene dyes.

11. The color changing marking kit of claim 7, wherein said second colorant of said second coloring composition is selected from the group consisting of Pyranine 120, Acid Red 52, Food Red 14, Basantol Green 910, Acid Red 87, Acid Red 92, pigments, and mixtures thereof.

12. The color changing marking kit of claim 7, wherein said bleach is selected from the group consisting of hydrogen sulfide, sodium sulfite, sodium hypochlorite and hydrogen peroxide.

13. A paint composition system comprising at least:

(a) a first aqueous paint comprising an amount of a first dye sufficient to produce a workable paint and whose coloring ability is destroyed in the presence of bleach and an amount of a thickener sufficient to provide body to the paint; and

(b) a second aqueous paint comprising an amount of a bleach sufficient to allow for the erasing of said first aqueous paint, a second colorant capable of and in an amount sufficient to maintain its characteristic color in the presence of bleach, and an amount of a thickener sufficient to provide body the paint.

14. The paint composition system of claim 13, wherein said first dye of said first coloring composition is selected from the group consisting of polymethine dyes and azo dyes.

15. The paint composition system of claim 13, wherein said first dye of said first coloring composition is selected from the group consisting of Astrazon Blue FRR, Astrazon Brilliant Red 4G, Astrazon Pink FBB, Acid Green 3, Acid Violet 19 and mixtures thereof.

16. The paint composition system of claim 13, wherein said second colorant of said second coloring composition is selected from the group consisting of pigments and xanthene dyes.

17. The paint composition system of claim 13, wherein said second colorant of said second coloring composition is selected from the group consisting of Pyranine 120, Acid Red 52, Food Red 14, Basantol Green 910, Acid Red 87, Acid Red 92;

pigments, and mixtures thereof.

18. The paint composition system of claim 13, wherein said bleach is selected from the group consisting of hydrogen sulfide, sodium sulfite, sodium hypochlorite and hydrogen peroxide.

19. An ink composition system comprising:

(a) a first aqueous ink comprising an amount of a first dye sufficient to produce a workable ink and whose coloring ability is destroyed in the presence of a bleach; and

(b) a second aqueous ink comprising an amount of a bleach sufficient to allow for the erasing of said first aqueous ink and a second colorant capable of and in an amount sufficient to maintain its characteristic color in the pressure of a bleach.

20. The ink composition system of claim 19, wherein said first dye of said first coloring composition is selected from the group consisting of polymethine dyes and azo dyes.

21. The ink composition system of claim 19, wherein said first dye of said first coloring composition is selected from the group consisting of Astrazon Blue FRR, Astrazon Brilliant Red 4G, Astrazon Pink FBB, Acid Green 3, Acid Violet 19 and mixtures thereof.

22. The ink composition system of claim 19, wherein said second colorant of said second coloring composition is selected from the group consisting of pigments and xanthene dyes.

23. The ink composition system of claim 19, wherein said second colorant of said second coloring composition is selected from the group consisting of Pyranine 120, Acid Red 52, Food Red 14, Basantol Green 910, Acid Red 87, Acid Red 92, pigments, and mixtures thereof.

24. The ink composition system of claim 19, wherein said bleach is selected from the group consisting of hydrogen sulfide, sodium sulfite, sodium hypochlorite and hydrogen peroxide.