IP Library Granted Patent US 7,935,754
Granted Patent B2
US 7,935,754 · App. 12/194,016 · Granted May 3, 2011

Automotive body panel containing thermally exfoliated graphite oxide

Assignee: The Trustees of Princeton University
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Quick Facts
Patent No.
US 7,935,754
App. No.
12/194,016
Granted
May 3, 2011
Kind
B2
Abstract

An automotive body panel containing a polymer composite formed of at least one polymer and a modified graphite oxide material, which is a thermally exfoliated graphite oxide with a surface area of from about 300 m 2 /g to 2600 m 2 /g.

Claims (13)

1. An automotive body panel, comprising a polymer composite, wherein the polymer composite comprises at least one polymer and a thermally exfoliated graphite oxide having a surface area of from about 300 m 2 /g to 2600 m 2 /g.

2. The automotive body panel of claim 1 , wherein the thermally exfoliated graphite oxide has a surface area of from about 400 m 2 /g to 2600 m 2 /g.

3. The automotive body panel of claim 1 , wherein the thermally exfoliated graphite oxide has a surface area of from about 500 m 2 /g to 2600 m 2 /g.

4. The automotive body panel of claim 1 , wherein the thermally exfoliated graphite oxide has a bulk density of from about 40 kg/m 3 to 0.1 kg/m 3 .

5. The automotive body panel of claim 1 , wherein the thermally exfoliated graphite oxide has a C/O ratio of from about 60/40 to 95/5.

6. The automotive body panel of claim 5 , wherein the thermally exfoliated graphite oxide has a C/O ratio of from about 65/35 to 85/15.

7. The automotive body panel of claim 1 , wherein the at least one polymer comprises one or more polymers selected from the group consisting of polyethylene, polypropylene and copolymers thereof, polyesters, nylons, polystyrenes, polycarbonates, polycaprolactones, polycaprolactams, fluorinated ethylenes, polyvinyl acetate and its copolymers, polyvinyl chloride, polymethylmethacrylate and acrylate copolymers, high impact polystyrene, styrenic sheet molding compounds, polycaprolactones, polycaprolactams, fluorinated ethylenes, styrene acrylonitriles, polyimides, epoxys, polyurethanes, poly[4,4′-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/poly(butylene adipate)], poly[4,4′-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/poly(butylene adipate)], poly[4,4′-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/poly(butylene adipate)], poly[4,4′-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/di(propylene glycol)/polycaprolactone, poly[4,4′-methylenebis(phenyl isocyanate)-alt-1,4-butanediol/polytetrahydrofuran, amine terminated polybutadienes, carboxyl terminated polybutadienes, polybutadiene, dicarboxy terminated butyl rubber, styrene/butadiene copolymers, polyisoprene, poly(styrene-co-butadiene), polydimethysiloxane, and natural latex rubber.

8. The automotive body panel of claim 7 , wherein the at least one polymer comprises one or more polymers selected from the group consisting of polyethylene, polypropylene and copolymers thereof, polyesters, nylons, polystyrenes, polycarbonates, styrene/butadiene copolymers, and high impact polystyrene.

9. The automotive body panel of claim 1 , wherein the thermally exfoliated graphite oxide has a surface area of from about 300 m 2 /g to 1100 m 2 /g.

10. The automotive body panel of claim 1 , wherein the polymer composite comprises between 0.1 and 20 weight percent thermally exfoliated graphite oxide, based on the total weight of the composite.

11. The automotive body panel of claim 1 , wherein the polymer composite comprises between 0.1 to 5 weight percent thermally exfoliated graphite oxide, based on the total weight of the composite.

12. The automotive body panel of claim 1 , wherein the polymer composite comprises between 1.5 and 5 weight percent thermally exfoliated graphite oxide, based on the total weight of the composite.

13. The automotive body panel of claim 1 , wherein the polymer composite comprises between 0.5 to 2 weight percent thermally exfoliated graphite oxide, based on the total weight of the composite.

Assignments (3)
CONFIRMATORY LICENSE Recorded Feb 8, 2012
From: PRINCETON UNIVERSITY
To: NASA
Reel/Frame 027813/0743 →
LICENSE Recorded Jan 30, 2012
From: PRINCETON UNIVERSITY
To: UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
Reel/Frame 027614/0934 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 9, 2009
From: PRINCETON UNIVERSITY
To: THE TRUSTEES OF PRINCETON UNIVERSITY
Reel/Frame 023626/0204 →
Continuity (2)
Continuation 11249404 · Oct 14, 2005
Related Publication 20090054578A1 · Feb 26, 2009