Two-component printable conductive composition
US10982109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2018 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Dec 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/1131
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a two-component printable conductive composition comprising, as separate components, a metallic component comprising a high melting point (HMP) metal or metal alloy powder having a mean particle size below about 15 μm; and a fluxing component comprising an organic acid and an organic solvent. The organic acid is characterized by having at least two carboxylic groups and a first logarithmic acid dissociation constant (p Ka1) of at most about 4. These two components are manufactured and stored separately and are mixed together shortly before the combined conductive composition is used for printing. Further provided is a kit comprising the two-component composition, wherein the metallic component and the fluxing component are disposed in separate containers. The present 10 invention further provides a method for deposition and patterning of the two-component composition, comprising: mixing the metallic component with the fluxing component; and applying the obtained mixture to an insulating substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.