Metal paste having excellent low-temperature sinterability and method for producing the metal paste
US10940534B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 2016 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Jul 25, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01C7/003
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A metal paste formed by kneading a solid content including silver particles and a solvent, in which the solid content includes silver particles containing silver particles having a particle size of 100 to 200 nm by 30% or more based on the number of particles, the silver particles have an average particle size of 60 to 800 nm as a whole, the silver particles constituting the solid content are bound with an amine compound having 4 to 8 carbon atoms in total as a protective agent, and the metal paste contains as an additive a high-molecular-weight ethyl cellulose having a number average molecular weight of 40000 to 90000. Since the metal paste contains a high-molecular-weight ethyl cellulose, a sintered body having a low resistance can be maintained while printability is improved. The metal paste has favorable printability, and can form a sintered body having a low resistance even in a low temperature region of 150° C. or lower.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.