Composition with a color marker

• US 8,067,351 B2
• Filed: 11/11/2008
• Issued: 11/29/2011
• Est. Priority Date: 11/11/2008
• Status: Active Grant

• Current Assignee: Colgate-Palmolive Company
• Original Assignee: Colgate-Palmolive Company
• Inventors: Hassan, Mahmoud, Boyke, Christine, Holerca, Marian N.
• Primary Examiner(s): HARDEE, JOHN R
• Application Number:
  US12/527,219
• Publication Number:
  US 20110021397A1
• Time in Patent Office: 1,113 Days
• Field of Search: 510/138
• US Class Current: 510/138
• CPC Class Codes: A61K 2800/42 Colour properties
• CPC Class Codes: A61K 2800/45 Colour indicators, e.g. pH- or Redox indicators
• CPC Class Codes: A61K 2800/52 Stabilizers
• CPC Class Codes: A61K 2800/522 Antioxidants; Radical scavengers
• CPC Class Codes: A61K 8/35 Ketones, e.g. benzophenone
• CPC Class Codes: A61K 8/498 having 6-membered rings or their condensed derivatives, e.g. coumarin
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations

Abstract

A composition comprising at least one indicator, at least one light stabilizer, and at least one antioxidant. The composition is useful as a cleanser that provides a usage timer based on color change to indicate to a user that sufficient time has elapsed for cleansing.

Claims

1. A composition comprising:

a. at least one indicator selected from litmus;

b. sodium ascorbate; and

c. benzophenone-4.

2. The composition of claim 1, wherein the composition has a second light absorption value after 13 weeks at 49°

C. that is no more than 20% different from a first light absorption value that is measured initially according to a UV-Vis spectrometer test for a peak absorption for the indicator.

3. The composition of claim 1, wherein the indicator is present in an amount of 0.01 to 10% by weight.

4. The composition of claim 1, wherein the sodium ascorbate is present in an amount of 0.01 to 1% by weight.

5. The composition of claim 1, wherein the benzophenone-4 is present in an amount of 0.01 to 0.1% by weight.

6. The composition of claim 1 further comprising at least one indicator selected from carmine, carminic acid, curry powder, thymol blue, pentamethoxy red, tropaeolin O, tropaeolin OO, tropaeolin OOO, 2, 4-dinitrophenol, methyl yellow, methyl orange, bromophenol blue, tetrabromophenol blue, alizarin sodium sulfonate, alpha-naphthyl red, para-ethoxychrysoidine, bromocresol green, methyl red, bromocresol purple, chlorophenol red, bromothymol blue, para-nitrophenol, azolitmin, phenol red, neutral red, rosolic acid, cresol red, naphtholphthalein, phenolphthalein, naphtholbenzein, thymolphthalein, nile blue, alizarin yellow, salicyl yellow, diazo violet, nitramine, poirrier'"'"'s blue, trinitrobenzoic acid, extracts from:

beets, blackberries, blueberries, carrots, cherries, delphinium petals, geranium petals, grapes, grape seeds, horse chestnut leaves, morning glories, pansy petals, petunia petals, primrose, poppy petals, purple peonies, red radish, red cabbage, rhubarb, rose petals, strawberries, tea, turmeric, tulip petals, thyme, violet petals, and vanilla.

7. The composition of claim 1 further comprising a surfactant.

8. The composition of claim 1 comprising:

a. 0.01 to 1% by weight litmus,

b. 0.05 to 1% by weight sodium ascorbate, and

c. 0.05 to 0.1% by weight benzophenone-4.

9. The composition of claim 1 comprising:

a. about 0.5 weight % litmus,

b. about 0.25 weight % sodium ascorbate, and

c. about 0.05 weight % benzophenone-4.

10. The composition of claim 1 further comprising glycerin.

11. The composition of claim 1 comprising:

a. 0.01 to 1% by weight litmus,

b. 0.05 to 1% by weight sodium ascorbate,

c. 0.05 to 0.1% by weight benzophenone-4;

d. glycerin in an amount up to 5% by weight;

e. and a surfactant.

12. A method comprising:

a. applying the composition of claim 1 to a substrate; and

b. leaving the composition on the substrate until a color change is observed.

13. The method of claim 12, wherein:

a. the applying the composition is to hands;

b. the leaving the composition on the substrate comprises rubbing the hands together until the color change is observed and rinsing the hands with water.

14. The method of claim 12, wherein the composition changes from a basic composition to an acidic composition during use.

15. The method of claim 12, wherein the color change is observed before about 30 seconds.

16. The method of claim 12, wherein the color change is observed at a time of 10 to 30 seconds.