Color-changing marking composition system
First Claim
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1. A color-changing marking composition system comprising:
- (a) a first marking composition comprising a wax, a dye which is other than a Leuco dye and which changes color when contacted with a color change-inducing compound, and a solvent capable of solubilizing the dye; and
(b) a second marking composition comprising a wax and a color change-inducing compound which when contacted with the dye induces a color change in the dye.
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Abstract
A color-changing marking composition system, suitable for use in the form of crayons and pencils, comprising a first marking composition comprising wax, a dye, which is other than a Leuco dye and which is capable of changing color upon contact with a color change-inducing compound, and a solvent capable of solubilizing the dye; and a second marking composition comprising wax and a color change-inducing compound, which is capable of inducing a color change in a dye in a marking composition with which it is brought in contact.
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32 Claims
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1. A color-changing marking composition system comprising:
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(a) a first marking composition comprising a wax, a dye which is other than a Leuco dye and which changes color when contacted with a color change-inducing compound, and a solvent capable of solubilizing the dye; and (b) a second marking composition comprising a wax and a color change-inducing compound which when contacted with the dye induces a color change in the dye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification