Nanometric copper formulations
AssigneeP.V. Nano Cell Ltd.
InventorsFernando De La Vega, Semyon Melamed
Life of this patent
Estimating the term…
Abstract
A formulation containing particulate matter including nanometric metallic copper particles, at least 10% of the particulate matter being single-crystal metallic copper particles, the particulate matter having an average secondary particle size (d50) within a range of 20 to 200 nanometers, the nanometric metallic copper particles being at least partially covered by at least one dispersant; a concentration ratio of crystalline cuprous oxide particles to the nanometric metallic copper particles, within the particulate matter, being at most 0.4; the formulation including a solvent, the particulate matter and the solvent forming a dispersion.
Claims13
A formulation comprising particulate matter including nanometric metallic copper particles, at least 10% of said particulate matter being single-crystal metallic copper particles, said particulate matter having an average secondary particle size (d50) within a range of 20 to 200 nanometers (nm), said nanometric metallic copper particles being at least partially covered by at least one dispersant;
- a concentration ratio of crystalline cuprous oxide particles to said nanometric metallic copper particles, within said particulate matter, being at most 0.4;
- at least 2% of said particulate matter being single-crystal metallic copper particles having a triangular morphology, as determined by manual counting of particles in a High Resolution Scanning Electron Microscope (HRSEM) field having at least 50 particles;
- the formulation further comprising at least a first solvent, said particulate matter and said solvent forming a dispersion, a concentration of said particulate matter within said dispersion being within a range of 20% to 75%, by weight.
A formulation comprising particulate matter including nanometric metallic copper particles, at least 10% of said particulate matter being single-crystal metallic copper particles, said particulate matter having an average secondary particle size (d50) within a range of 20 to 200 nanometers (nm), said nanometric metallic copper particles being at least partially covered by at least one dispersant;
- a concentration ratio of crystalline cuprous oxide to said nanometric metallic copper particles, within said particulate matter, being at most 0.4;
- the formulation further comprising at least a first solvent, said particulate matter and said solvent forming a dispersion, a concentration of said particulate matter within said dispersion being within a range of 25% to 75%, by weight;
- wherein a weight ratio of said dispersant to said particulate matter is at most 0.04,
- wherein a weight ratio of said dispersant to said particulate matter is at most 0.03 and at least 0.015;
- and
- where in at least 8% of said particulate matter being single-crystal metallic copper particles have a triangle morphology, as determined by manual counting of particles in a High Resolution Scanning Electron Microscope (HRSEM) field having at least 50 particles.
A formulation comprising particulate matter including nanometric metallic copper particles, at least 10% of said particulate matter being single-crystal metallic copper particles, said particulate matter having an average secondary particle size (d50) within a range of 20 to 200 nanometers (nm), said nanometric metallic copper particles being at least partially covered by at least one dispersant;
- a concentration ratio of crystalline cuprous oxide to said nanometric metallic copper particles, within said particulate matter, being at most 0.4;
- the formulation further comprising at least a first solvent, said particulate matter and said solvent forming a dispersion, a concentration of said particulate matter within said dispersion being within a range of 15% to 70%, by weight;
- wherein said dispersant includes polyvinylpyrrolidone (PVP);
- wherein a concentration of said particulate matter within said dispersion is within a range of 30% to 65% by weight;
- and
- wherein at least 10% of said particulate matter being single-crystal metallic copper particles have a triangular morphology, as determined by manual counting of particles in a High Resolution Transmission Electron Microscope (HRTEM) image field having at least 10 particles.
Dependencies are inferred from the claim text.