Silver nanoparticle inks comprising aminomethylsilanes

Patent metadata

Field	Value
Publication number	US-2016108271-A1
Application number	US-201414517692-A
Country	US
Kind code	A1
Filing date	Oct 17, 2014
Priority date	Oct 17, 2014
Publication date	Apr 21, 2016
Grant date	—

Abstract

An ink includes a plurality of silver nanoparticles, an aminomethylsilane viscosifier, and a hydrocarbon solvent. A method includes providing an ink including a plurality of silver nanoparticles, an aminomethylsilane viscosifier, and a hydrocarbon solvent, the method including printing an image on a substrate with the ink, and annealing the image on the substrate. An ink includes organoamine-stabilized silver nanoparticles, a viscosifier comprising N-(6-aminohexyl)aminomethyltriethoxysilane, and a hydrocarbon solvent.

First claim

What is claimed is:

1 . An ink comprising:
a plurality of silver nanoparticles; an aminomethylsilane viscosifier; and a hydrocarbon solvent.

2 . The ink of claim 1 , wherein the silver nanoparticles are stabilized.

3 . The ink of claim 2 , wherein the stabilized silver nanoparticles comprise an organoamine.

4 . The ink of claim 1 , wherein the silver nanoparticles are present from about 20 to about 80 weight percent.

5 . The ink of claim 1 , wherein the aminomethylsilane viscosifier is present in an amount from about 0.01 weight percent to about 3.0 weight percent of the plurality of silver nanoparticles.

6 . The ink of claim 1 , wherein the aminomethylsilane viscosifier comprises Formula (I):

wherein each of R 1 , R 2 , and R 3 are independently selected from the group consisting of alkyl, alkoxy, halogen, and hydrogen, and wherein at least one of R 1 , R 2 , and R 3 is selected from the group consisting of methoxy, ethoxy, propoxy, butoxy, and chloro; and each of R′ and R″ are independently hydrogen or an aliphatic group optionally substituted with an amino group.

7 . The ink of claim 8 , wherein R′ is H and R″ an aliphatic group optionally substituted with amino or an optionally substituted phenyl group.

8 . The ink of claim 1 , wherein the aminomethylsilane is N-(6-aminohexyl)aminomethyltriethoxysilane or N-(6-aminohexyl)aminomethyltrimethoxysilane.

9 . The ink of claim 1 , wherein the ink is an inkjet ink, a fleoxographic ink, a gravure ink, or a screen ink.

10 . The ink of claim 1 , wherein when the ink is annealed in a film, the film has a conductivity in a range from about 1.0×10 5 S/cm to about 5.0×10 5 S/cm.

11 . The ink of claim 1 , having a viscosity in a range from about 5 cps to about 5,000 cps.

12 . A method comprising:
providing an ink comprising:
a plurality of silver nanoparticles;
an aminomethylsilane viscosifier; and
a hydrocarbon solvent;
printing an image on a substrate with the ink; and annealing the image on the substrate.

13 . The method of claim 11 , wherein the image is a printed circuit.

14 . The method of claim 11 , wherein the silver nanoparticles are stabilized by an organoamine.

15 . The method of claim 11 , wherein the aminomethylsilane viscosifier is N-(6-aminohexyl)aminomethyltriethoxysilane.

16 . The method of claim 11 , wherein the aminomethylsilane viscosifier is present in an amount from about 0.01 weight percent to about 1.5 weight percent of the plurality of silver nanoparticles.

17 . The method of claim 11 , wherein the ink has a viscosity from about 5 cps to about 5,000 cps.

18 . An ink comprising:
organoamine-stabilized silver nanoparticles; a viscosifier comprising N-(6-aminohexyl)aminomethyltriethoxysilane; and a hydrocarbon solvent.

19 . The ink of claim 18 , wherein the ink has a viscosity for inkjet printing, flexographic printing, gravure printing, or screen printing.

20 . The ink of claim 18 , wherein N-(6-aminohexyl)aminomethyltriethoxysilane is present in an amount from about 0.01 weight percent to about 1.5 weight percent of the plurality of silver nanoparticles.

Assignees

• Xerox Corp

Inventors

• Wu Yiliang
• Song Guiqin
• Abraham Biby Esther
• Gagnon Yvan
• Liu Ping

Classifications

• C08K3/08

  Metals · CPC title

• C08K5/544

  containing nitrogen · CPC title

• C09D11/52 Primary

  Electrically conductive inks · CPC title

• C09D11/38

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• C08K2003/0806

  Silver · CPC title