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US 11,769,606 B2Granted
Conductive metal paste
AssigneeNisshinbo Holdings Inc.
InventorGen Masuda
Life of this patent
Estimating the term…
Abstract
The purpose of the present invention is to provide a conductive metal paste having improved conductivity without increasing the amount of a conductive filler to be added. The conductive metal paste contains a metal filler and less than 1 mass % of an ionic liquid, and does not contain carbon nanotubes.
Claims4
A conductive metal paste which contains a metal filler and an ionic liquid at less than 1 wt % and is free of carbon nanotubes,
- wherein a cation forming the ionic liquid is a nitrogen atom-containing cation represented by the following formula (1-2) or (1-4), or a phosphorus atom-containing cation represented by the following formula (3):
- wherein R21 to R23 are each independently an alkyl group having 1 to 20 carbon atoms, R8 is an alkyl group having 1 to 20 carbon atoms, R9 is an alkyl group having 1 to 20 carbon atoms which is different from R8 or an alkoxyalkyl group represented by —(CH2)k—OR, R is a methyl group or an ethyl group;
- and k is 1 or 2.
Dependencies are inferred from the claim text.