IP Library › Granted Patent US 9,085,699
Granted Patent B2
US 9,085,699 · App. 13/757,891 · Granted Jul 21, 2015

Silver metal nanoparticle composition

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Quick Facts
Patent No.
US 9,085,699
App. No.
13/757,891
Granted
Jul 21, 2015
Kind
B2
Abstract

A metal nanoparticle composition includes water and a water-soluble polymer having both carboxylic acid and sulfonic acid groups. Silver nanoparticles are dispersed in the water such that the weight percentage of silver in the composition is greater than 10%.

Claims (20)

1. A metal nanoparticle composition comprising:

water;

a water-soluble polymer having both carboxylic acid and sulfonic acid groups; and

silver nanoparticles dispersed in the water, wherein the weight percentage of silver in the metal nanoparticle composition is greater than 10% and wherein the weight ratio of the water soluble polymer to silver is from 0.0005 to 0.11.

2. The metal nanoparticle composition of claim 1 wherein the sulfonic acid group is formed from styrene sulfonic acid, 3-sulfopropyl acrylate, 3-sulfopropyl methacrylate, 2-sulfoethyl methacrylate, 3-sulfobutyl methacrylate, or 2-acrylamido-2-methylpropane sulfonic acid.

3. The metal nanoparticle composition of claim 1 wherein the carboxylic acid group is formed from acrylic acid, methacrylic acid, ethacrylic acid, itaconic acid, maleic acid, fumaric acid, monoalkyl itaconate, monoalkyl, citraconic acid, styrenecarboxylic acid, 2-carboxyethyl acrylate or 2-carboxyethyl acrylate oligomers.

4. The metal nanoparticle composition of claim 1 wherein the polymer includes poly(4-styrenesulfonic acid-co-maleic acid).

5. The metal nanoparticle composition of claim 1 wherein the polymer includes poly(4-styrenesulfonic acid-co-acrylic acid).

6. The metal nanoparticle composition of claim 1 wherein the molar ratio of sulfonic acid groups to carboxylic acid groups is in a range of 0.05 to 5.

7. The metal nanoparticle composition of claim 6 wherein the molar ratio of sulfonic acid groups to carboxylic acid groups is in a range of 0.1 to 4.

8. The metal nanoparticle composition of claim 1 wherein the weight percentage of silver in the composition is in a range from 40 to 90%.

9. The metal nanoparticle composition of claim 1 wherein the weight ratio of the water soluble polymer to silver is from 0.0005 to 0.04.

10. The metal nanoparticle composition of claim 1 wherein the weight ratio of the water soluble polymer to silver is from 0.0005 to 0.02.

11. The metal nanoparticle composition of claim 1 wherein the carboxylic acid group is selected to stabilize the silver nanoparticle dispersion and the sulfonic acid group is selected to lower the polymer-to-silver weight ratio in the dispersion.

12. The metal nanoparticle composition of claim 1 wherein the mean size of the silver nanoparticles is in a range from 5 nm to 500 nm.

13. The metal nanoparticle composition of claim 12 wherein the silver nanoparticle size has a bimodal distribution.

14. The metal nanoparticle composition of claim 1 further including a humectant, a surfactant, a latex polymer, a thickener, a colorant, a cross-linker, or combinations thereof.

15. The metal nanoparticle composition of claim 1 wherein the average molecular weight of the polymer is in a range from 500 to 500,000.

16. The metal nanoparticle composition of claim 15 wherein the average molecular weight of the polymer is in a range from 500 to 50,000.

17. The metal nanoparticle composition of claim 1 wherein a light absorption spectrum of the composition has a wavelength maximum between 400 and 500 nanometers.

Assignments (14)
NOTICE OF SECURITY INTERESTS Recorded Mar 4, 2021
From: EASTMAN KODAK COMPANY
To: BANK OF AMERICA, N.A., AS AGENT
Reel/Frame 056984/0001 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Mar 4, 2021
From: EASTMAN KODAK COMPANY
To: ALTER DOMUS (US) LLC
Reel/Frame 056734/0233 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Mar 4, 2021
From: EASTMAN KODAK COMPANY
To: ALTER DOMUS (US) LLC
Reel/Frame 056734/0001 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded Mar 4, 2021
From: EASTMAN KODAK COMPANY
To: ALTER DOMUS (US) LLC
Reel/Frame 056733/0681 →
RELEASE OF SECURITY INTEREST Recorded Jan 24, 2020
From: BARCLAYS BANK PLC
To: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST) INC.; KODAK AMERICAS LTD.; KODAK REALTY INC.; LASER PACIFIC MEDIA CORPORATION; QUALEX INC.; KODAK PHILIPPINES LTD.; NPEC INC.
Reel/Frame 052773/0001 →
RELEASE OF SECURITY INTEREST Recorded Jul 30, 2019
From: JP MORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; PFC, INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX, INC.; KODAK PHILIPPINES, LTD.; NPEC, INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
Reel/Frame 049901/0001 →
RELEASE OF SECURITY INTEREST Recorded Jul 22, 2019
From: JP MORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC, INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX, INC.; KODAK PHILIPPINES, LTD.; NPEC, INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
Reel/Frame 050239/0001 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (ABL) Recorded Sep 5, 2013
From: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER-PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX INC.; KODAK PHILIPPINES, LTD.; NPEC INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
To: BANK OF AMERICA N.A., AS AGENT
Reel/Frame 031162/0117 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (SECOND LIEN) Recorded Sep 5, 2013
From: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST), INC.; KODAK AMERICAS, LTD.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER-PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX INC.; KODAK PHILIPPINES, LTD.; NPEC INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC
To: BARCLAYS BANK PLC, AS ADMINISTRATIVE AGENT
Reel/Frame 031159/0001 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT (FIRST LIEN) Recorded Sep 5, 2013
From: EASTMAN KODAK COMPANY; FAR EAST DEVELOPMENT LTD.; FPC INC.; KODAK (NEAR EAST), INC.; KODAK IMAGING NETWORK, INC.; KODAK PORTUGUESA LIMITED; KODAK REALTY, INC.; LASER-PACIFIC MEDIA CORPORATION; PAKON, INC.; QUALEX INC.; KODAK PHILIPPINES, LTD.; NPEC INC.; CREO MANUFACTURING AMERICA LLC; KODAK AVIATION LEASING LLC; KODAK AMERICAS, LTD.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE
Reel/Frame 031158/0001 →
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Sep 5, 2013
From: CITICORP NORTH AMERICA, INC., AS SENIOR DIP AGENT; WILMINGTON TRUST, NATIONAL ASSOCIATION, AS JUNIOR DIP AGENT
To: EASTMAN KODAK COMPANY; PAKON, INC.
Reel/Frame 031157/0451 →
PATENT SECURITY AGREEMENT Recorded Apr 1, 2013
From: EASTMAN KODAK COMPANY; PAKON, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 030122/0235 →
CORRECTIVE ASSIGNMENT TO CORRECT THE FIRST INVENTOR'S LAST NAME SHOULD BE WANG PREVIOUSLY RECORDED ON REEL 029801 FRAME 0929. ASSIGNOR(S) HEREBY CONFIRMS THE FIRST INVENTOR'S LAST NAME IS CORRECT ON ASSIGNMENT DOCUMENT BUT WAS ENTERED INCORRECTLY INTO THE SYSTEM. Recorded Mar 21, 2013
From: WANG, YONGCAI; HODERLEIN, PAUL MATTHEW; LEBENS, JOHN ANDREW; YAU, HWEI-LING; TRAUERNICHT, DAVID PAUL
To: EASTMAN KODAK COMPANY
Reel/Frame 030055/0575 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 13, 2013
From: WANT, YONGCAI; HODERLEIN, PAUL MATTHEW; LEBENS, JOHN ANDREW; YAU, HWEI-LING; TRAUERNICHT, DAVID PAUL
To: EASTMAN KODAK COMPANY
Reel/Frame 029801/0929 →