Eradicable gel ink, methods of eradication of the same,...

Details Eradicable gel ink, methods of eradication of the same,... Eradicable gel ink, methods of eradication of the same,...

C - Chemistry, Metallurgy

09

D

C09D 11/18 (2006.01)

Patent

CA 2532732

A shear-thinning eradicable ink including water, a dye selected from the group consisting of diarylmethane derivatives, triarylmethane derivatives, methine dyes, and a solvent, wherein the ink has a shear-thinning index in the range of about 0.35 to about 1.0; a kit including the ink and an eradicator solution; an ink complex including a colorless or substantially colorless dye selected from the group consisting of oxidized diarylmethane derivatives, oxidized triarylmethane derivatives, and oxidized methine dyes, and at least one or a gelling agent and thickener; and methods of using the ink as part of an eradicable ink system, are disclosed herein.

Cette invention concerne une encre effaçable fluidifiable comprenant de l'eau, une teinture prise dans le groupe composé de dérivés de diarylméthane, de triarylméthane, de teintures de méthine et d'un solvant. L'encre a un indice de fluidification compris entre 0,35 et 1,0 environ. L'invention concerne également une une trousse contenant cette encre et une solution d'effacement ainsi qu'un complexe d'encre contenant une teinture incolore ou sensiblement incolore prise dans le groupe composé de dérivés de diarylméthane oxydé, de dérivés de tirarylméthane oxyde, de teinture de méthine oxydée et d'au moins un gent gélifiant et d'un agent épaississant. Sont également décrits des procédés d'utilisation de cette encre dans le cadre d'un système à encre effaçable.

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