IP Library › Granted Patent US 9,117,568
Granted Patent B2
US 9,117,568 · App. 12/753,870 · Granted Aug 25, 2015

Polymer compositions containing carbonaceous fillers

Inventors: Dan Scheffer (Columbia, MD); Vipin Varma (Ghent, BE)
Assignee: Vorbeck Materials Corp.
H01B1/24C09D5/24C09D7/1216C09D7/1233C09D11/52C08K3/04C08K5/098C08K5/17C08K5/19C08L2203/206
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Quick Facts
Patent No.
US 9,117,568
App. No.
12/753,870
Granted
Aug 25, 2015
Kind
B2
Abstract

Compositions comprising carbonaceous filler, polymeric binder, and at least one organic compound having at least one charged functional group.

Claims (18)

1. A composition, comprising graphene sheets and graphite, wherein the ratio by weight of graphite to graphene sheets is from about 2:98 to 98:2, at least one polymeric binder, at least one organic compound having at least one charged functional group, and at least one multi-chain lipid.

2. The composition of claim 1 , wherein the organic molecule is an ammonium salt.

3. The composition of claim 1 , wherein the organic molecule is an alkylol ammonium salt of a carboxylic acid.

4. The composition of claim 1 , wherein the polymer binder comprises a polyamide.

5. The composition of claim 1 , wherein the polymer binder comprises a polyamide copolymer having a melting point of below about 150° C.

6. The composition of claim 1 , wherein the graphene sheets have a surface area of at least about 300 m 2 /g.

7. The composition of claim 1 , wherein the graphene sheets have a surface area of at least about 400 m 2 /g.

8. The composition of claim 1 , wherein the graphene sheets have a carbon to oxygen molar ratio of at least about 25:1.

9. The composition of claim 1 , wherein the graphene sheets have a carbon to oxygen molar ratio of at least about 75:1.

10. The composition of claim 1 having an electrical conductivity of at least about 10 S/cm.

11. The composition of claim 1 having an electrical conductivity of at least about 10 2 S/cm.

12. The composition of claim 1 in the form of a coating or ink.

13. A article printed with the composition of claim 1 .

14. The composition of claim 1 , further comprising a carrier.

15. The composition of claim 1 , wherein the ratio by weight of graphite to graphene sheets is from about 20:80 to about 80:20.

16. The composition of claim 1 , wherein the ratio by weight of graphite to graphene sheets is from about 30:70 to about 70:30.

17. The composition of claim 1 , wherein the ratio by weight of graphite to graphene sheets is from about 10:90 to about 90:10.

18. The composition of claim 1 , wherein the ratio by weight of graphite to graphene sheets is from about 5:95 to about 95:5.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 21, 2015
From: VARMA, VIPIN; SCHEFFER, DAN
To: VORBECK MATERIALS CORP.
Reel/Frame 036141/0219 →
Continuity (2)
Provisional Application 61166353 · Apr 3, 2009
Related Publication 20110086206A1 · Apr 14, 2011