IP Library Granted Patent US 11,781,027
Granted Patent B2
US 11,781,027 · App. 17/340,770 · Granted Oct 10, 2023

Printable mixed fillers epoxy composites

Inventors: Rahul Pandey (Cupertino, CA); Junhua Wei (Palo Alto, CA); Gabriel Iftime (Newark, CA); Jamie Kalb (Mountain View, CA)
Assignee: XEROX CORPORATION
C09D11/102B29B7/90B29C64/106B29C64/314B33Y10/00B33Y40/10B33Y70/00C09D11/037B29K2063/00B29K2105/167B29K2507/04B82Y30/00B82Y40/00
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Quick Facts
Patent No.
US 11,781,027
App. No.
17/340,770
Granted
Oct 10, 2023
Kind
B2
Abstract

A composition of matter comprises at least 10 wt % epoxy functionalized two-dimensional shaped particles, carbon nanotubes in the range of 0.1 to 5 wt %, epoxy resin and a curing agent. A method of manufacturing a composition of matter includes mixing epoxy resin, carbon nanotubes and a solvent to produce a material, drying the material, and mixing the material with a curing agent to product the composition of matter. A method of printing a composition of matter includes producing the composition of matter by combining epoxy functionalized graphene, carbon nanotubes, epoxy base resin, and a curing agent, extrusion printing the composition of matter into a desired pattern, and curing the pattern.

Claims (20)

1. A composition of matter comprising at least 10 wt % epoxy reacted fluorographene particles functionalized two-dimensional shaped particles, carbon nanotubes in the range of 0.1 to 5 wt %, epoxy resin and a curing agent.

2. A composition of matter comprising at least 10 wt % epoxy functionalized two-dimensional shaped particles, carbon nanotubes in the range of 0.1 to 5 wt %, epoxy resin and 1-Ethyl-3-methylimidazolium dicyanamide as a curing agent.

3. The composition of matter as claimed in claim 1 , wherein the two-dimensional shaped particles comprise one or more of functionalized graphene, clays, and alumina platelets.

4. The composition of matter as claimed in claim 1 , wherein the carbon nanotubes are one of either bare or functionalized.

5. The composition of matter as claimed in claim 4 , wherein the carbon nanotubes are functionalized with one of either at least one carboxyl group or at least one epoxy group.

6. The composition of matter as claimed in claim 1 , wherein the composition of matter has a viscosity of at least 1000 Pascal-seconds at zero shear.

7. The composition of matter as claimed in claim 1 , wherein the composition of matter has a viscosity of at least 10 Pascal-seconds at 100/s shear rate.

8. The composition of matter as claimed in claim 1 , wherein the carbon nanotubes comprise single-walled carbon nanotubes.

9. The composition of matter as claimed in claim 1 , wherein the curing agent comprises an ionic liquid.

10. The composition of matter as claimed in claim 1 , wherein the curing agent comprises 1-Ethyl-3-methylimidazolium dicyanamide.

11. The composition of matter as claimed in claim 1 , wherein the composition of matter has improved toughness over compositions of matter without carbon nanotubes of at least 50 percent.

12. The composition of matter as claimed in claim 1 , wherein the composition of matter has improved tensile strength over compositions of matter without carbon nanotubes of at least 10 percent.

13. The composition of matter as claimed in claim 2 , wherein the two-dimensional shaped particles comprise one or more of functionalized graphene, clays, and alumina platelets.

14. The composition of matter as claimed in claim 2 , wherein the carbon nanotubes are one of either bare or functionalized.

15. The composition of matter as claimed in claim 14 , wherein the carbon nanotubes are functionalized with one of either at least one carboxyl group or at least one epoxy group.

16. The composition of matter as claimed in claim 2 , wherein the composition of matter has a viscosity of at least 1000 Pascal-seconds at zero shear.

17. The composition of matter as claimed in claim 2 , wherein the composition of matter has a viscosity of at least 10 Pascal-seconds at 100/s shear rate.

18. The composition of matter as claimed in claim 2 , wherein the carbon nanotubes comprise single-walled carbon nanotubes.

19. The composition of matter as claimed in claim 2 , wherein the composition of matter has improved toughness over compositions of matter without carbon nanotubes of at least 50 percent.

20. The composition of matter as claimed in claim 2 , wherein the composition of matter has improved tensile strength over compositions of matter without carbon nanotubes of at least 10%.

Assignments (7)
SECOND LIEN NOTES PATENT SECURITY AGREEMENT Recorded Jul 2, 2025
From: XEROX CORPORATION
To: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 071785/0550 →
FIRST LIEN NOTES PATENT SECURITY AGREEMENT Recorded Apr 11, 2025
From: XEROX CORPORATION
To: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 070824/0001 →
SECURITY INTEREST Recorded Feb 13, 2024
From: XEROX CORPORATION
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 066741/0001 →
SECURITY INTEREST Recorded Nov 20, 2023
From: XEROX CORPORATION
To: JEFFERIES FINANCE LLC, AS COLLATERAL AGENT
Reel/Frame 065628/0019 →
CORRECTIVE ASSIGNMENT TO CORRECT THE REMOVAL OF US PATENTS 9356603, 10026651, 10626048 AND INCLUSION OF US PATENT 7167871 PREVIOUSLY RECORDED ON REEL 064038 FRAME 0001. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Jun 28, 2023
From: PALO ALTO RESEARCH CENTER INCORPORATED
To: XEROX CORPORATION
Reel/Frame 064161/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 20, 2023
From: PALO ALTO RESEARCH CENTER INCORPORATED
To: XEROX CORPORATION
Reel/Frame 064038/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 7, 2021
From: PANDEY, RAHUL; WEI, JUNHUA; IFTIME, GABRIEL; KALB, JAMIE
To: PALO ALTO RESEARCH CENTER INCORPORATED
Reel/Frame 056457/0155 →