Back to results
US 8,784,689 B2Granted
Color-changing composition
AssigneeKimberly-Clark Worldwide, Inc.
InventorXuedong Song
Life of this patent
Estimating the term…
Abstract
The present invention relates to a color-changing composition and a multiple-component material including a substrate and a printed layer on the substrate. The printed layer includes a color-changing composition to indicate a change in condition, such as a change in wetness. The color-changing composition includes a matrix-forming component, a leuco dye, a Lewis Acid, a neutral surfactant and an organic solvent.
Claims19
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.
4 more elements
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.
4 more elements
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.
4 more elements
Dependencies are inferred from the claim text.