Methods for preparation of concentrated graphene ink compositions and related composite materials
US-2015072162-A1 · Mar 12, 2015 · US
Methods for preparation of concentrated graphene ink compositions and related composite materials
US10676629B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10676629-B2 |
| Application number | US-201715830508-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 4, 2017 |
| Priority date | Apr 22, 2011 |
| Publication date | Jun 9, 2020 |
| Grant date | Jun 9, 2020 |
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Abstract
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A rapid, scalable methodology for graphene dispersion and concentration with a polymer-organic solvent medium, as can be utilized without centrifugation, to enhance graphene concentration.
First claim
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We claim: 1. A composition, comprising: graphene, a hydrophobic fluid component at least partially immiscible with an aqueous medium and an cellulosic polymer dispersing agent at least partially soluble in said hydrophobic fluid component, wherein said hydrophobic fluid component comprises a component selected from chloroform, C 6 -C 8 alkanes, and a combination thereof, wherein said cellulosic polymer dispersing agent comprises a cellulose polymer about 46-48% ethoxylated. 2. The composition of claim 1 wherein said cellulosic polymer dispersing agent comprises an ethyl cellulose. 3. The composition of claim 1 wherein said graphene has a concentration greater than about 3 mg/ml. 4. The composition of claim 3 applied to a substrate and annealed, said applied composition comprising a decomposition product of ethyl cellulose. 5. The composition of claim 4 photoannealed. 6. A composition, comprising: graphene, a hydrophobic fluid component at least partially immiscible with an aqueous medium and an cellulosic polymer dispersing agent at least partially soluble in said hydrophobic fluid component, wherein said cellulosic polymer dispersing agent comprises a cellulose polymer about 46-48% ethoxylated. 7. The composition of claim 6 wherein said hydrophobic fluid component comprises a component selected from terpenes, terpene alcohols and combinations thereof. 8. The composition of claim 7 wherein said hydrophobic fluid component comprises a terpineol and cyclohexanone. 9. The composition of claim 6 wherein said graphene has a concentration greater than about 3 mg/ml.
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the conductive material comprising carbon-silicon compounds, carbon or silicon · CPC title
Electrically conductive inks · CPC title
based on carbohydrates · CPC title
Of polyester [e.g., alkyd, etc.] · CPC title
- C09D11/38Primary
characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title
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- What does patent US10676629B2 cover?
- A rapid, scalable methodology for graphene dispersion and concentration with a polymer-organic solvent medium, as can be utilized without centrifugation, to enhance graphene concentration.
- Who is the assignee on this patent?
- Univ Northwestern
- What technology area does this patent fall under?
- Primary CPC classification C09D11/38. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 09 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).