Security element

Details Security element Security element

B - Operations, Transporting

41

M

B41M 1/10 (2006.01) B42D 15/00 (2006.01) C09D 11/00 (2006.01)

Patent

CA 2647225

The invention relates to thermochromic ink for intaglio printing. Said ink is characterised in that it comprises a microencapsulated three-component mixture consisting of at least one electron donor, at least one electron acceptor and at least one solvent.

L'invention concerne une encre d'imprimerie thermochrome destinée à l'héliogravure, caractérisée en ce qu'elle contient un mélange à trois composants microencapsulé composé d'au moins un donneur d'électrons, d'au moins un accepteur d'électrons et d'au moins un solvant.

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