System and methods for nanostructure protected delivery of treatment agent and selective release thereof
US-2015359886-A1 · Dec 17, 2015 · US
Carbon nanotube liquid dispersion, and method for producing same
US11345600B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11345600-B2 |
| Application number | US-201816760708-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 22, 2018 |
| Priority date | Oct 30, 2017 |
| Publication date | May 31, 2022 |
| Grant date | May 31, 2022 |
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Abstract
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A CNT dispersion includes a dispersion medium, and a nanocarbon material containing carbon nanotubes dispersed in the dispersion medium. 98% or more of the nanocarbon material has a length of 1 μm or more and 105 μm or less and the nanocarbon material has an average aspect ratio of 100 or more and 20000 or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. A carbon nanotube dispersion comprising: a dispersion medium; and a nanocarbon material containing carbon nanotubes dispersed in the dispersion medium, wherein 98% or more of the nanocarbon material has a length of 1 μm or more and 105 μm or less and the nanocarbon material has an average aspect ratio of 100 or more and 20000 or less. 2. The carbon nanotube dispersion according to claim 1 , wherein the nanocarbon material has a standard deviation of the length of 40 μm or less. 3. A method for producing a carbon nanotube dispersion, comprising: performing a first dispersion treatment on a nanocarbon material containing an aggregates of carbon nanotubes to adjust a length of 95% or more of the nanocarbon material to 1 μm or more and 105 μm or less; and performing a second dispersion treatment on the nanocarbon material after the first dispersion treatment to loosen at least a part of the aggregates, wherein 98% or more of the obtained nanocarbon material has a length of 1 μm or more and 105 μm or less and the obtained nanocarbon material has an average aspect ratio of 100 or more and 20000 or less. 4. The method for producing a carbon nanotube dispersion according to claim 3 , wherein the first dispersion treatment is performed by using a colloid mill or a homogenizer. 5. The method for producing a carbon nanotube dispersion according to claim 4 , wherein the second dispersion treatment is a high-pressure dispersion treatment. 6. The method for producing a carbon nanotube dispersion according to claim 3 , wherein 10% or more of the nanocarbon material before the first dispersion treatment has a length of more than 105 μm.
Assignees
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Classifications
- C01B32/174Primary
Derivatisation; Solubilisation; Dispersion in solvents · CPC title
Length · CPC title
the conductive material comprising carbon-silicon compounds, carbon or silicon · CPC title
Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension · CPC title
Manufacture or treatment of nanostructures · CPC title
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- What does patent US11345600B2 cover?
- A CNT dispersion includes a dispersion medium, and a nanocarbon material containing carbon nanotubes dispersed in the dispersion medium. 98% or more of the nanocarbon material has a length of 1 μm or more and 105 μm or less and the nanocarbon material has an average aspect ratio of 100 or more and 20000 or less.
- Who is the assignee on this patent?
- Nitta Corp
- What technology area does this patent fall under?
- Primary CPC classification C01B32/174. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 31 2022 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).