Color-changing composition

1. A homogenous, color-changing liquid composition comprising:

a matrix-forming component;

a leuco dye;

a Lewis Acid;

a neutral surfactant; and

an organic solvent; wherein the color-changing composition is capable of changing color when contacted by an aqueous-based liquid, causing the Lewis Acid to dissociate from the leuco dye.

2. The homogenous color-changing composition of claim 1 , wherein a molar ratio of the Lewis Acid to leuco dye ranges from 2 to 50.

3. The homogenous color-changing composition of claim 1 , wherein a weight ratio of the neutral surfactant to leuco dye is less than 10.

4. The homogenous color-changing composition of claim 1 , wherein the matrix-forming component is selected from one or more water-insoluble, film-forming polymers and copolymers.

5. The homogenous color-changing composition of claim 4 , wherein the water-insoluble, film-forming polymers and copolymers are selected from acrylate/acrylamide copolymers, polyurethane adhesives, methyl cellulose and copolymers of vinylpyrrolidone and dimethylaminopropyl methacrylamide.

6. The homogenous color-changing composition of claim 1 , wherein the matrix-forming component is selected from a varnish and a small molecule and/or polymeric material.

7. The homogenous color-changing composition of claim 1 , wherein the color-changing composition includes more than one leuco dye.

8. The homogenous color-changing composition of claim 1 , wherein the leuco dye is selected from fluoran leuco dyes, phthalide-type leuco dyes and mixtures thereof.

9. The homogenous color-changing composition of claim 1 , wherein the color-changing composition includes more than one Lewis Acid.

10. The homogenous color-changing composition of claim 1 , wherein the Lewis acid is selected from zinc salts, iron salts of chloride and salicylate and mixtures thereof.

11. The homogenous color-changing composition of claim 1 , wherein the color-changing composition includes more than one neutral surfactant.

12. The homogenous color-changing composition of claim 1 wherein the neutral surfactant is selected from polyethylene glycol-based surfactants, polyoxyalkylene-based surfactants and mixtures thereof.

13. The homogenous color-changing composition of claim 1 , wherein the color-changing composition includes more than one organic solvent.

14. A multiple-component material, the material comprising:

a substrate and a printed layer on the substrate, wherein the printed layer includes a homogenous color-changing composition comprising:

a matrix-forming component;

a leuco dye;

a Lewis Acid; and

a neutral surfactant

wherein the Lewis Acid is capable of dissociating from the leuco dye when contacted by an aqueous solution, thereby changing the color of the homogeneous color-changing composition.

15. The multiple-component material of claim 14 , wherein the substrate is a non-woven material.

16. The multiple-component material of claim 14 , wherein the substrate is a polyolefin film.

17. A disposable absorbent article including the multiple-component material of claim 14 as part of an outer cover.

18. The multiple-component material of claim 14 , wherein the printed layer is formed on the substrate in one or more patterns selected from stripes, dots, geometric shapes, irregular shapes, alpha-numeric characters, anthropomorphic images, pictorial representation of animals, pictorial representation of inanimate objects, cartoon characters, logos and trademarks.

19. A disposable absorbent article including a multiple-component material, the material comprising: a substrate and a film layer on the substrate, wherein the film layer includes a color-changing composition comprising:

20% to 95% of a matrix-forming component;

0.1% to 10% of a leuco dye;

1% to 20% of a Lewis Acid; and

2% to 50% of a neutral surfactant

wherein the Lewis Acid is capable of dissociating from the leuco dye when contacted by an aqueous solution, thereby causing a color-change of the homogeneous color-changing composition.