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US 9,540,734 B2Granted
Conductive compositions comprising metal carboxylates
AssigneeXerox Corporation
InventorsYiliang Wu, Ping Liu
Life of this patent
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Abstract
A conductive composition that comprises a branched metal carboxylate and one or more solvents. The solvents may be an aromatic hydrocarbon solvent. In embodiments, the branched metal carboxylate is a silver carboxylate. The conductive composition may be used in forming conductive features on a substrate, including by inkjet printing, screen printing or offset printing.
Claims16
A conductive composition comprising:
- a reaction mixture;
- a branched metal carboxylate present in an amount of from about 5 to about 70 percent by weight of the total weight of the conductive composition, wherein the metal for the branched metal carboxylate is selected from the group consisting of silver, palladium, copper, gold, nickel, or mixtures thereof;
- a first solvent being an aromatic hydrocarbon solvent in which the branched metal carboxylate is soluble, wherein the aromatic hydrocarbon solvent is selected from the group consisting of toluene, xylene, trimethylbenzene, ethyl benzene, diethylbenzene, methylethylbenzene, tetrahydronaphthalene, methylnaphthalene, propylbenzene, butylbenzene, methyl propylbenzene, cumene and mixtures thereof;
- and
- a second solvent being an aliphatic solvent in which the branched metal carboxylate is soluble;
- wherein the reaction mixture comprises the first solvent and the second solvent,
- wherein the conductive composition has a viscosity ranging from about 1 to about 3,000 cps at room temperature, and
- wherein the viscosity of the conductive composition is selected by controlling the amount of second solvent relative to the amount of first solvent in the reaction mixture.
5 more elements
A conductive composition comprising:
- a branched metal carboxylate present in an amount of from about 5 to about 70 percent by weight of the total weight of the conductive composition;
- a first solvent being an aromatic hydrocarbon solvent in which the branched metal carboxylate is soluble;
- and
- a second solvent in which the branched metal carboxylate is soluble, wherein a composition at a near saturated concentration formed from the first solvent and the metal carboxylate has a low viscosity and a composition at a near saturated concentration formed from the second solvent and the branched metal carboxylate has a high viscosity, and further wherein the conductive composition has a viscosity of from about 2 cps to about 3000 cps at room temperature, and a surface tension from about 25 mN/m to about 40 mN/m.
1 more element
A process for forming a conductive feature comprising:
- providing a conductive composition comprising
- a branched metal carboxylate present in an amount of from about 20 to about 50 percent by weight of the total weight of the conductive composition,
- a first solvent being an aromatic hydrocarbon solvent in which the branched metal carboxylate is soluble, and
- a second solvent in which the branched metal carboxylate is soluble, wherein a composition at a near saturated concentration formed from the first solvent and the metal carboxylate has a low viscosity at room temperature, and a composition at a near saturated concentration formed from the second solvent and the branched metal carboxylate has a high viscosity at room temperature;
- liquid depositing the conductive composition onto a substrate;
- and
- annealing the conductive composition to the substrate to form the conductive feature.
4 more elements
Dependencies are inferred from the claim text.