LASER MARKABLE COMPOSITIONS, ARTICLES AND DOCUMENTS

A laser markable composition includes (a) an aqueous medium; (b) a leuco dye; (c) an optothermal converting agent; and (d) a color developing agent, characterized in that the color developing agent is a polymer particle capable of forming an acid upon exposure to heat.

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Bibliographische Detailangaben
Hauptverfasser: GOETHALS, Fabienne, LOCCUFIER, Johan, KOKKELENBERG, Dirk, PETTON, Lionel
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A laser markable composition includes (a) an aqueous medium; (b) a leuco dye; (c) an optothermal converting agent; and (d) a color developing agent, characterized in that the color developing agent is a polymer particle capable of forming an acid upon exposure to heat.