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AssigneeJoanneum Research Forschungsgesellschaft 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 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 selected from the group consisting of polyphthalaldehyde, polyglutaraldehyde, poly-succinaldehyde, or a polymeric glyoxylic acid, or a glyoxylic acid derivative, 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 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 selected from the group consisting of polyphthalaldehyde, polyglutaraldehyde, poly-succinaldehyde, and a polymeric glyoxylic acid, or a glyoxylic acid derivative, and that the metal precursor material is reduced by monomeric depolymerization products of the thermally decomposable polymer.
Dependencies are inferred from the claim text.