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US 12,621,936 B2Granted
Conductive traces
AssigneePeridot Print LLC
InventorsElizabeth Ann Galati, John Samuel Dilip Jangam, Thomas Craig Anthony, Aja Pariante Hartman, Kristopher J. Erickson
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Abstract
The present disclosure relates to a conductive trace precursor composition comprising a metal salt; 3 to 15 weight % of a reducing solvent selected from a lactam and/or a polyol, and water. Where the reducing solvent is 2-pyrrolidinone, the 2-pyrrolidinone is not present in an amount of 5 weight % or in an amount of 7.5 weight % of the conductive trace precursor composition.
Claims10
A conductive trace precursor composition, consisting of:
- copper nitrate;
- water;
- at least one surfactant present in an amount ranging from about 0.5 weight % to about 3 weight % of a total weight of the conductive trace precursor composition, the at least one surfactant including a non-ionic fluorinated surfactant;
- and
- a reducing solvent to reduce the copper nitrate to elemental copper in response to heat, wherein the reducing solvent is 2-pyrrolidone and is present in an amount ranging from 7.5 weight % to 7.75 weight % of the total weight of the conductive trace precursor composition.
2 more elements
A conductive trace precursor composition, consisting of:
- from about 35 wt % to about 40 wt % of copper nitrate, based on a total weight of the conductive trace precursor composition;
- from 7.5 wt % to 7.75 wt % of a reducing solvent, based on the total weight of the conductive trace precursor composition, to reduce the copper nitrate to elemental copper in response to heat, wherein the reducing solvent is 2-pyrrolidinone;
- and
- a balance of water.
1 more element
Dependencies are inferred from the claim text.