THERMOCHROMIC INK COMPOSITION
The invention relates to a thermochromic ink composition comprising, in a liquid medium, known as solvent, a dispersion of thermochromic microcapsules incorporating at least one leuco-dye and a thermoplastic binder selected from the group containing polyacrylic polyesters, polyurethanes and copolyme...
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| Format: | Patent |
| Sprache: | eng ; fre |
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| Zusammenfassung: | The invention relates to a thermochromic ink composition comprising, in a liquid medium, known as solvent, a dispersion of thermochromic microcapsules incorporating at least one leuco-dye and a thermoplastic binder selected from the group containing polyacrylic polyesters, polyurethanes and copolymers thereof. The composition is characterised in that the solvent is aprotic. The invention also relates to a method for producing a card and to such a card incorporating at least one thermochromic pattern produced with a thermochromic ink composition according to the invention.
ABSTRACT A thermochromic ink composition includes, in a liquid medium, known as solvent, a dispersion of thermochromic microcapsules incorporating at least one leuco-dye and a thermoplastic binder selected from the group containing polyacrylic polyesters, polyurethanes and copolymers thereof. The composition is characterised in that the solvent is aprotic. A method for producing a card and such a card incorporating at least one thermochromic pattern produced with a = thermochromic ink composition are also described. CA 2910744 2020-05-05 |
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