Process of preparation of an aqueous gel ink with fixed color comprising silver nanoparticles

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United States of America

PATENT NO 12247131
APP PUB NO 20220275225A1
SERIAL NO

17630805

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Abstract

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The present invention concerns a process for preparing an aqueous gel ink with fixed color comprising the following steps: (i) preparing a gel-based matrix of aqueous ink; (ii) preparing an aqueous suspension of silver nanoparticles with a fixed color by mixing silver salts with: —water, —a mixture of at least an alkali metal or alkaline earth metal salt of citrate, —an oxidizing agent, preferably hydrogen peroxide H2O2, —and polyvinylpyrrolidone; (iii) adding under agitation the aqueous suspension of silver nanoparticles obtained in step (ii) to the gel-based matrix of aqueous ink obtained in step (i), to obtain an aqueous gel ink with fixed color with silver nanoparticles dispersed therein.

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Patent Owner(s)

  • SOCIETE BIC; UNIVERSITÉ DE HAUTE-ALSACE; CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Albenge, Olivier Clichy, FR 18 7
Ghellal, Feriel Clichy, FR 10 2
Metillon, Romain Clichy, FR 9 2
Mougin, Karine Paris, FR 10 2
Spangenberg, Arnaud Mulhouse, FR 11 5

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