Conductive metal composition

Patent metadata

Field	Value
Publication number	US-9245665-B2
Application number	US-201314105359-A
Country	US
Kind code	B2
Filing date	Dec 13, 2013
Priority date	Dec 14, 2012
Publication date	Jan 26, 2016
Grant date	Jan 26, 2016

Abstract

A conductive metal composition comprising 40 to 88 wt % of silver particles having an average particle size in the range of 10 to 100 nm and having an aspect ratio of 3 to 1:1, 2 to 20 wt % of a poly(2-ethyl-2-oxazoline) resin having a weight-average molar mass of 50,000 to 500,000 and 10 to 58 wt % of a solvent for the poly(2-ethyl-2-oxazoline) resin.

First claim

What is claimed is:

1. An electrically conductive metal composition comprising 40 to 88 wt % of the total composition of silver particles having an average particle size in the range of 10 to 100 nm and having an aspect ratio of 3 to 1:1, 2 to 20 wt % of the total composition of a poly(2-ethyl-2-oxazoline) resin having a weight-average molar mass of 50,000 to 500,000 and 10 to 58 wt % of the total composition of a solvent for the poly(2-ethyl-2-oxazoline) resin.

2. The conductive metal composition of claim 1 , wherein the silver particles are 65 to 80 wt % of the total composition.

3. The conductive metal composition of claim 1 , wherein the poly(2-ethyl-2-oxazoline) resin is 5 to 15 wt % of the total composition.

4. The conductive metal composition of claim 1 , wherein the poly(2-ethyl-2-oxazoline) resin has a weight-average molar mass of 50,000 to 200,000.

5. The conductive metal composition of claim 1 , wherein the solvent is 10 to 40 wt % of the total composition.

6. The conductive metal composition of claim 1 , wherein the solvent is selected from the group consisting of water, a mixture of water and one or more organic solvents, a single organic solvent and a mixture of two or more organic solvents.

7. The conductive metal composition of claim 1 comprising one or more additives.

8. The conductive metal composition of claim 1 consisting of 40 to 88 wt % of the total composition of silver particles having an average particle size in the range of 10 to 100 nm and having an aspect ratio of 3 to 1:1, 2 to 20 wt % of the total composition of a poly(2-ethyl-2-oxazoline) resin having a weight-average molar mass of 50.000 to 500.000, 10 to 58 wt % of the total composition of a solvent for the poly(2-ethyl-2-oxazoline) resin, and 0 to 2 wt % of the total composition of at least one additive, wherein the sum of the wt % totals 100 wt %.

9. A process for the production of a conductive metallization on a substrate comprising the steps:
(1) providing a substrate,
(2) applying a conductive metal composition of claim 1 on the substrate, and
(3) subjecting the conductive metal composition applied in step (2) to photonic sintering to form a conductive metallization on the substrate.

10. The process of claim 9 , wherein the substrate comprises one or more than one material.

11. The process of claim 9 , wherein the substrate is a temperature-sensitive substrate.

12. The process of claim 9 , wherein the conductive metal composition is applied by printing or pen-writing.

13. The process of claims 9 , wherein the applied conductive metal composition is dried prior to performing step (3).

14. The process of claim 9 , wherein step (3) is performed within ≦1 second.

Assignees

• Du Pont

Inventors

• Hui Dave
• Summers John D

Classifications

• H01B13/003

  using irradiation · CPC title

• C08K3/08

  Metals · CPC title

• B05D5/12

  to obtain a coating with specific electrical properties · CPC title

• H01B1/22 Primary

  the conductive material comprising metals or alloys · CPC title

• C08K2201/016

  Additives defined by their aspect ratio · CPC title