Spherical silica particles and resin composition using same
US-2024417544-A1 · Dec 19, 2024 · US
Silica sol and silica-containing epoxy resin composition
US9969867B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9969867-B2 |
| Application number | US-201414785739-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 14, 2014 |
| Priority date | May 20, 2013 |
| Publication date | May 15, 2018 |
| Grant date | May 15, 2018 |
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Abstract
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The silica sol of the invention contains silica particles having a mean primary particle size of 20 to 100 nm and which has a silica particle size/mean primary particle size ratio, determined through dynamic light scattering, of 3.0 or less, wherein the silica particles are surface-treated with an organic silane compound and have an α-ray emission rate of 0.005 counts/cm 2 ·hr or less and a moisture absorption coefficient, determined after allowing the silica particles to stand for 48 hours at 23° C. and a relative humidity of 50 RH %, of 0.5 mass % or lower.
First claim
Opening claim text (preview).
The invention claimed is: 1. A silica sol comprising silica particles dispersed in a dispersion medium, the silica particles being surface-treated with an organic silane compound and having: a mean primary particle size of 20 to 100 nm when the mean primary particle size (nm) is calculated as 2720/specific surface area (m 2 /g) where the specific surface area is determined for silica powder obtained by drying the silica particles through a nitrogen adsorption method; a silica pa…
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Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
- C08K9/06Primary
Chemistry & Metallurgy · mapped topic
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- What does patent US9969867B2 cover?
- The silica sol of the invention contains silica particles having a mean primary particle size of 20 to 100 nm and which has a silica particle size/mean primary particle size ratio, determined through dynamic light scattering, of 3.0 or less, wherein the silica particles are surface-treated with an organic silane compound and have an α-ray emission rate of 0.005 counts/cm 2 ·hr or less and a moi…
- Who is the assignee on this patent?
- Nissan Chemical Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08K9/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 15 2018 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).