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US-2018096876-A1 · Apr 5, 2018 · US
Silicon dioxide powder
US2024158242A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024158242-A1 |
| Application number | US-202218282319-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 22, 2022 |
| Priority date | Mar 31, 2021 |
| Publication date | May 16, 2024 |
| Grant date | — |
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- Title
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Abstract
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A silicon dioxide powder has a uranium content of 0.8 ppb by mass or less and a sphericity of 0.80 or more. The silicon dioxide powder has a low uranium content and a high sphericity.
First claim
Opening claim text (preview).
1 . A silicon dioxide powder having a uranium content of 0.8 ppb by mass or less and a sphericity of 0.80 or more. 2 . The silicon dioxide powder according to claim 1 , having a specific surface area of 2.0 m 2 /g or more. 3 . The silicon dioxide powder according to claim 1 , wherein in a particle size distribution of the silicon dioxide powder, a particle diameter (d10) corresponding to a cumulative frequency of 10% is 0.1 to 0.5 μm, a particle diameter (d50) corresponding to a cumulative frequency of 50% is 0.3 to 12.0 μm, and a particle diameter (d90) corresponding to a cumulative frequency of 90% is 1.5 to 22.0 μm. 4 . The silicon dioxide powder according to claim 1 , having an iron content of 100 ppm by mass or less in terms of Fe 2 O 3 . 5 . The silicon dioxide powder according to claim 1 , having an aluminum content of 500 ppm by mass or less in terms of Al 2 O 3 . 6 . The silicon dioxide powder according to claim 1 , having a potassium content of 10 ppm by mass or less in terms of K 2 O. 7 . The silicon dioxide powder according to claim 1 , having a sodium content of 15 ppm by mass or less in terms of Na 2 O. 8 . The silicon dioxide powder according to claim 1 , having a calcium content of 15 ppm by mass or less in terms of CaO. 9 . The silicon dioxide powder according to claim 1 , having a magnesium content of 5 ppm by mass or less in terms of MgO. 10 . The silicon dioxide powder according to claim 1 , having a titanium content of 10 ppm by mass or less in terms of TiO 2 .
Assignees
Inventors
Classifications
- C01B33/12Primary
Silica; Hydrates thereof, e.g. lepidoic silicic acid · CPC title
- C01B33/18Primary
Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof (preparation of aerogels by dehydrating gels C01B33/158; treatment to enhance the pigmenting or filling properties C09C) · CPC title
Particles with a specific particle size distribution · CPC title
Surface area · CPC title
Powder free flowing behaviour · CPC title
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- What does patent US2024158242A1 cover?
- A silicon dioxide powder has a uranium content of 0.8 ppb by mass or less and a sphericity of 0.80 or more. The silicon dioxide powder has a low uranium content and a high sphericity.
- Who is the assignee on this patent?
- Denka Company Ltd
- What technology area does this patent fall under?
- Primary CPC classification C01B33/12. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu May 16 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).