Color-changing marking composition system

Details Color-changing marking composition system Color-changing marking composition system

1995-02-10

1995-10-24

Klemanski, Helene

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 22B, 106 21R, 106 21A, 106 19B, C09D 1112

Patent

active

054606470

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 Leuco dye 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 Leuco dye with which it is brought in contact.

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Photocopy of the Packaging Material for Crayola Overwriters, Binney & Smith, Inc., Easton, Pa. (1993) and Photocopy of the Packaging Material for Crayola Changeables, Binney & Smith, Inc., Easton, Pa. (1993).
"Color Fibre Pen Inks", BASF Brochure, (1979).

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