Method of producing copper nano particle colloidal dispersions
US10279393B2 · kind B2 · utility
5Cited by
10References
26Claims
0Family size
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Key dates
| Filing date | Jul 17, 2017 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Jul 17, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/64
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present process provides a method for synthesizing oxide-free copper nanometal dispersion in a free and reduced state using a solution phase synthesis process. A solution of an organic reducing agent containing at least two proximal nitrogen atoms is reacted with a separate solution containing a copper salt reformulated into a charge transfer complex. The reaction products are stabilized with Lewis bases and Lewis acids and optionally can be concentrated by removing a portion of the volatile low molecular weight solvent by either the use of a partial vacuum or by chemical extraction into another phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.