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AssigneeJoanneum Research Gorschungsgesellschaft MBH
InventorsStefan Köstler, Daniela Wachter, Heinz Pichler, Andreas Rudorfer
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The invention relates to a metallic, conductive ink for ink-jet printing, comprising a metal precursor material, in particular an organometallic decomposition compound, and a thermally decomposable polymer dissolved in an organic solvent, wherein a polymer having a decomposition temperature Tc<150° C. is contained as the thermally decomposable polymer. The polymer is selected from a cyclic polyacetal having blocked terminal groups, a cyclic polyaldehyde comprising bifunctional monomers, such as polyphthalaldehyde, polyglutaraldehyde, polysuccinaldehyde, and a polymeric glyoxylic acid, or a glyoxylic acid derivative, such as poly(methyl glyoxylate). The monomeric depolymerization products of the thermally decomposable polymer are used as reductants for the metal precursor material. The invention further relates to a method for producing the ink.
A metallic conductive ink for ink-jet printing, comprising a metal precursor material, in particular an organometallic decomposition compound, and a thermally decomposable polymer dissolved in an organic solvent, characterized in that a polymer having a decomposition temperature Tc<150° C. is contained as the thermally decomposable polymer, the polymer is selected from a cyclic polyacetal having blocked terminal groups, a cyclic polyaldehyde comprising bifunctional monomers, such as polyphthalaldehyde, polyglutaraldehyde, polysuccinaldehyde, or a polymeric glyoxylic acid, or a glyoxylic acid derivative, such as poly(methyl glyoxylate), and monomeric depolymerization products of the thermally decomposable polymer are used as reductants for the metal precursor material.
A method for producing a metallically conductive ink for ink-jet printing, comprising dissolving a metal precursor material and adding a thermally decomposable polymer dissolved in an organic solvent, characterized in that a solution of the metal precursor material, in particular a metal complex, is supplemented with a thermally decomposable polymer dissolved in an organic solvent and having a decomposition temperature Tc<150° C., which polymer is selected from a cyclic polyacetal having blocked terminal groups, a cyclic polyaldehyde comprising bifunctional monomers, such as polyphthalaldehyde, polyglutaraldehyde, poly-succinaldehyde, and a polymeric glyoxylic acid, or a glyoxylic acid derivative, such as poly(methyl glyoxylate), and that the metal precursor material is reduced by monomeric depolymerization products of the thermally decomposable polymer.
Dependencies are inferred from the claim text.