Tunable directional color transition compositions and methods of making and using the same
AssigneeSegan Industries, Inc.
InventorHans O. Ribi
Life of this patent
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Abstract
Color change compositions that transition from a first to second color state upon application of an applied stimulus are provided. Also provided are substrates having the compositions on a surface thereof, as well as methods of making and using the compositions.
Claims24
A color change composition comprising a color former and color developer that transitions from a first color state to a second color state upon application of an applied stimulus, wherein the color former changes color in response to a phase transition of the color developer and wherein the color developer comprises a glycerol monostearate derivative or a polydiacetylene.
A color change composition comprising a color former and color developer that transitions from a first color state to a second color state upon application of an applied stimulus, wherein the composition comprises two or more distinct leuco dyes which exhibit opposing color transition characteristics in response to the same applied stimulus.
Dependencies are inferred from the claim text.