Color changing pan paint compositions

• US 5,498,282 A
• Filed: 10/03/1994
• Issued: 03/12/1996
• Est. Priority Date: 07/31/1992
• Status: Expired due to Term

• Current Assignee: Crayola LLC (Hallmark Cards Incorporated)
• Original Assignee: Binney & Smith Inc.
• Inventors: Dereamus, Robert C., Miller, Richard E.
• Primary Examiner(s): KLEMANSKI, HELENE G
• Application Number:
  US08/317,212
• Time in Patent Office: 526 Days
• Field of Search: 106/22 B, 106/22 F, 106/25 R, 106/26 R
• US Class Current: 524/423
• 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: B44F 1/10 Changing, amusing, or secret pictures
• CPC Class Codes: C09D 11/50 Sympathetic, colour changing or similar inks
• CPC Class Codes: C09D 5/06 Artists' paints
• 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

Pan paints and associated color-changing systems are disclosed. In a first embodiment, the color-changing system comprises an undercolor pan paint coloring composition comprising an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater and/or in the presence of a reducing agent; and an overcolor composition comprising a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and/or in the presence of a reducing agent, and a base such that the pH of the overcolor composition is about 10 or greater and/or a reducing agent. In a second embodiment, the color-changing system comprises an undercolor coloring composition comprising an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 4 or less; and an overcolor coloring composition comprising a colorant capable of maintaining its characteristic color in the presence of a pH of about 4 or less and an acid such that the pH of the overcolor coloring composition is about 4 or less; wherein one or both of the coloring compositions is a pan paint.

Claims

1. A pan paint composition comprising by weight:

from about 20% to about 99.9% of a water-soluble resin; and

from about 0.1% to about 20% of a water-soluble dye selected from the group consisting of dyes whose coloring ability is destroyed or modified in the presence of a pH of about 10 or more;

dyes whose coloring ability is destroyed or modified in the presence of a reducing agent; and

dyes whose coloring ability is destroyed or modified in the presence of a pH of about 10 or more and in the presence of a reducing agent.

2. A pan paint composition according to claim 1, comprising by weight:

from about 20% to about 99.9% of a water-soluble resin;

a plasticizer or nucleating agent in a total amount in the range of 0% to about 40%;

from 0% to about 15% water;

from 0% to about 20% of an opacifier;

from 0% to about 25% of a filler;

from 0% to about 10% of a surfactant;

from 0% to about 5% of a preservative;

from 0% to about 1% of a defoamer;

from 0% to about 30% of a pigment; and

from about 0.1% to about 20% of a water-soluble dye selected from the group consisting of dyes whose coloring ability is destroyed or modified in the presence of a pH of about 10 or more;

dyes whose coloring ability is destroyed or modified in the presence of a reducing agent; and

dyes whose coloring ability is destroyed or modified in the presence of a pH of about 10 or more and in the presence of a reducing agent.

3. A pan paint composition comprising by weight:

from about 20% to about 99.9% of a water-soluble resin; and

from about 0.1% to about 20% of a water-soluble dye whose coloring ability is destroyed or modified in the presence of a pH of about 4 or less.

4. A pan paint composition according to claim 3, comprising by weight:

from about 20% to about 99.9% of a water-soluble resin;

a plasticizer or nucleating agent in a total amount in the range of 0% to about 40%;

from 0% to about 15% water;

from 0% to about 20% of an opacifier;

from 0% to about 25% of a filler;

from 0% to about 10% of a surfactant;

from 0% to about 5% of a preservative;

from about 0% to about 1% of a defoamer;

from 0% to about 30% of a pigment;

from 0% to about 5% of a stabilizing base; and

from about 0.1% to about 20% of a water-soluble dye whose coloring ability is destroyed or modified in the presence of a pH of about 4 or less.

5. A pan paint composition comprising by weight:

from about 20% to about 99.4% of a water-soluble resin;

from 0% to about 30% of a pigment;

from 0% to about 10% of a base;

from 0% to about 20% of a reducing agent, provided that the total amount of base and reducing agent taken together is at least 0.5%; and

from 0% to about 20% of a dye whose coloring ability is not destroyed or modified in the presence of a pH of about 10 or more, provided that the total amount of colorant in the pan paint composition is at least 0.1%.

6. A pan paint composition according to claim 5, comprising by weight:

from about 20% to about 99.4% of a water-soluble resin;

a plasticizer or nucleating agent in a total amount in the range of 0% to about 40%;

from 0 to about 15% water;

from 0% to about 20% of an opacifier;

from 0% to 25% of a filler;

from 0% to about 10% of a surfactant;

from 0% to about 5% of a preservative;

from 0% to about 1% of a defoamer;

from 0% to about 30% of a pigment;

from 0% to about 10% of a base;

from 0% to about 20% of a reducing agent, provided that the total amount of base and reducing agent taken together is at least 0.5%; and

from 0% to about 20% of a dye whose coloring ability is not destroyed or modified in the presence of a pH of about 10 or more, provided that the total amount of colorant in the pan paint composition is at least 0.1%.

7. A pan paint composition comprising by weight:

from about 20% to about 99.4% of a water-soluble resin;

from 0% to about 30% of a pigment;

from about 0.5% to about 30% of an acid; and

from 0% to about 20% of a dye whose coloring ability is not destroyed or modified in the presence of a pH of about 4 or less, provided that the total amount of colorant in the pan paint composition is at least 0.1%.

8. A pan paint composition according to claim 7, comprising by weight:

from about 20% to about 99.4% of a water-soluble resin;

a plasticizer or nucleating agent in a total amount in the range of 0% to about 40%;

from 0% to about 15% water;

from 0% to about 20% of an opacifier;

from 0% to about 25% of a filler;

from 0% to about 10% of a surfactant;

from 0% to about 5% of a preservative;

from 0% to about 1% of a defoamer;

from 0% to about 30% of a pigment;

from about 0.5% to about 30% of an acid;

from 0% to about 3% of an antioxidant; and

from 0% to about 20% of a dye whose coloring ability is not destroyed or modified in the presence of a pH of about 4 or less, provided that the total amount of colorant in the pan paint composition is at least 0.1%.

9. A coloring system comprising:

a pan paint undercolor composition comprising a water-soluble solid carrier and a dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater; and

an overcolor composition comprising a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and a base such that the pH of the overcolor composition is about 10 or greater.

10. A coloring system according to claim 9, wherein said water-soluble carrier comprises a water-soluble resin selected from the group consisting of modified starches, water-soluble gums, water-soluble waxes, hydroxyethylcellulose, carboxyethylcellulose, ethylene oxide polymers, polyacrylic acid, and polyacrylamide.

11. A coloring system according to claim 9, wherein said overcolor composition is an ink.

12. A coloring system according to claim 10, wherein said resin is polyethylene glycol.

13. A coloring system according to claim 12, wherein said water-soluble carrier further comprises an opacifier.

14. A coloring system according to claim 13, wherein said opacifier is selected from the group consisting of barium sulfate and titanium dioxide.

15. A coloring system according to claim 12, wherein said water-soluble carrier further comprises a preservative.

16. A coloring system according to claim 12, wherein said water-soluble carrier further comprises a plasticizer.

17. A coloring system according to claim 16, wherein said plasticizer is selected from the group consisting of stearyl alcohol and a polyethelthene glycol having a molecular weight of about 20,000.

18. A coloring system according to claim 12, wherein said water-soluble carrier further comprises a surfactant.

19. A coloring system according to claim 18, wherein said surfactant is poly(oxy-1,2-ethanediyl), alpha-(nonylPhenyl)-omega-hydroxy-, branched.

20. A coloring system according to claim 9, wherein said overcolor composition is a pan paint composition comprising said colorant and a water-soluble carrier.

21. A coloring system according to claim 9, wherein said overcolor composition is an ink composition comprising said colorant and an aqueous carrier.

22. A coloring system comprising:

an undercolor composition comprising a dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater; and

an overcolor pan paint composition comprising a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and a base such that the pH of the overcolor composition is about 10 or greater and a water-soluble solid carrier.

23. A coloring system according to claim 22, wherein said water-soluble carrier comprises a water-soluble resin selected from the group consisting of modified starches, water-soluble gums, water-soluble waxes, hydroxyethylcellulose, carboxyethylcellulose, ethylene oxide polymers, polyacrylic acid, and polyacrylamide.

24. A coloring system according to claim 23, wherein said resin is polyethylene glycol.

25. A coloring system according to claim 24, wherein said water-soluble carrier further comprises an opacifier.

26. A coloring system according to claim 25, wherein said opacifier is selected from the group consisting of barium sulfate and titanium dioxide.

27. A coloring system according to claim 24, wherein said water-soluble carrier further comprises a preservative.

28. A coloring system according to claim 24, wherein said water-soluble carrier further comprises a plasticizer.

29. A coloring system according to claim 28, wherein said plasticizer is selected from the group consisting of stearyl alcohol and a polyethelthene glycol having a molecular weight of about 20,000.

30. A coloring system according to claim 24, wherein said water-soluble carrier further comprises a surfactant.

31. A coloring system according to claim 30, wherein said surfactant is poly(oxy-1,2-ethanediyl), alpha-(nonylPhenyl)-omega-hydroxy-, branched.

32. A coloring system according to claim 22, wherein said undercolor composition is an ink composition comprising said colorant and an aqueous carrier.

33. A coloring system comprising:

a pan paint undercolor composition comprising a water-soluble solid carrier and a dye whose coloring ability is destroyed in the presence of a pH of about 4 or less; and

an overcolor composition comprising a colorant capable of maintaining its characteristic color in the presence of a pH of about 4 or less and an acid such that the pH of the overcolor composition is about 4 or less.

34. A coloring system according to claim 33, wherein said water-soluble carrier comprises a water-soluble resin selected from the group consisting of modified starches, water-soluble gums, water-soluble waxes, hydroxyethylcellulose, carboxyethylcellulose, ethylene oxide polymers, polyacrylic acid, and polyacrylamide.

35. A coloring system according to claim 34, wherein said resin is polyethylene glycol.

36. A coloring system according to claim 35, wherein said water-soluble carrier further comprises an opacifier.

37. A coloring system according to claim 36, wherein said opacifier is selected from the group consisting of barium sulfate and titanium dioxide.

38. A coloring system according to claim 35, wherein said water-soluble carrier further comprises a preservative.

39. A coloring system according to claim 35, wherein said water-soluble carrier further comprises a plasticizer.

40. A coloring system according to claim 39, wherein said plasticizer is selected from the group consisting of stearyl alcohol and a polyethelthene glycol having a molecular weight of about 20,000.

41. A coloring system according to claim 35, wherein said water-soluble carrier further comprises a surfactant.

42. A coloring system according to claim 41, wherein said surfactant is poly(oxy-1,2-ethanediyl), alpha-(nonylPhenyl)-omega-hydroxy-, branched.

43. A coloring system according to claim 33, wherein said overcolor composition is a pan paint composition comprising said colorant and a water-soluble carrier.

44. A coloring system according to claim 33, wherein said overcolor composition is an ink composition comprising said colorant and an aqueous carrier.

45. A coloring system comprising:

an undercolor composition comprising a dye whose coloring ability is destroyed in the presence of a pH of about 4 or less; and

a pan paint overcolor composition comprising a water-soluble solid carrier, a dye that is capable of maintaining its characteristic color in the presence of a pH of about 4 or less, and an acid such that the pH of an aqueous solution of said overcolor pan paint composition is about 4 or less.

46. A coloring system according to claim 45, wherein said water-soluble carrier comprises a water-soluble resin selected from the group consisting of modified starches, water-soluble gums, water-soluble waxes, hydroxyethylcellulose, carboxyethylcellulose, ethylene oxide polymers, polyacrylic acid, and polyacrylamide.

47. A coloring system according to claim 46, wherein said resin is polyethylene glycol.

48. A coloring system according to claim 47, wherein said water-soluble carrier further comprises an opacifier.

49. A coloring system according to claim 48, wherein said opacifier is selected from the group consisting of barium sulfate and titanium dioxide.

50. A coloring system according to claim 47, wherein said water-soluble carrier further comprises a preservative.

51. A coloring system according to claim 47, wherein said water-soluble carrier further comprises a plasticizer.

52. A coloring system according to claim 51, wherein said plasticizer is selected from the group consisting of stearyl alcohol and a polyethelthene glycol having a molecular weight of about 20,000.

53. A coloring system according to claim 47, wherein said water-soluble carrier further comprises a surfactant.

54. A coloring system according to claim 53, wherein said surfactant is poly(oxy-1,2-ethanediyl), alpha-(nonylPhenyl)-omega-hydroxy-, branched.

55. A coloring system according to claim 45, wherein said undercolor composition is an ink composition comprising said colorant and an aqueous carrier.

56. A coloring system comprising by weight:

a pan paint undercolor composition comprising a water-soluble solid carrier and a dye selected from the group consisting of dyes whose coloring ability is destroyed or modified in the presence of a pH of about 10 or more;

dyes whose coloring ability is destroyed or modified in the presence of a reducing agent; and

dyes whose coloring ability is destroyed or modified in the presence of a pH of about 10 or more and in the presence of a reducing agent; and

an overcolor composition comprising a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and in the presence of a reducing agent, from 0% to about 20% of a reducing agent, and from 0% to about 10% of a base, provided that the total amount of base and reducing agent, taken together, is at least 0.5%.

57. A coloring system comprising by weight:

an undercolor composition comprising a dye selected from the group consisting of dyes whose coloring ability is destroyed or modified in the presence of a pH of about 10 or more;

dyes whose coloring ability is destroyed or modified in the presence of a reducing agent; and

dyes whose coloring ability is destroyed or modified in the presence of a pH of about 10 or more and in the presence of a reducing agent; and

a pan paint overcolor composition comprising a water-soluble solid carrier and a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and in the presence of a reducing agent, from 0% to about 20% of a reducing agent, and from 0% to about 10% of a base, provided that the total amount of base and reducing agent, taken together, is at least 0.5%.