Optical laminate, method of producing optical laminate, optical element, and image display
US-2018224580-A1 · Aug 9, 2018 · US
Void-containing layer, laminate, method for producing void-containing layer, optical member, and optical apparatus
US11384259B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11384259-B2 |
| Application number | US-202016832288-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 27, 2020 |
| Priority date | Sep 29, 2017 |
| Publication date | Jul 12, 2022 |
| Grant date | Jul 12, 2022 |
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- Title
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Abstract
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A void-containing layer is disclosed in which a pressure-sensitive adhesive or an adhesive is less likely penetrated into voids. The void-containing layer of the present invention includes: nanoparticles, surfaces of which are modified with a compound having a surface orientation, wherein the void-containing layer has a void fraction of 35 vol %.
First claim
Opening claim text (preview).
The invention claimed is: 1. A void-containing layer having a void fraction of 35 vol % or more, and a peak void diameter of 5 nm or more and 50 nm or less, comprising: a porous layer comprising a plurality of microporous particles of a gel pulverized product chemically bonded to each other and having voids between the microporous particles wherein the voids are interconnected with each other, and wherein the gel pulverized product includes at least one element selected from the group consisting of Si, Mg, Al, Ti, Zn and Zr; and wherein voids on an outermost surface of the porous layer are filled with silica nanoparticles, surfaces of which being modified with a compound having a surface orientation, wherein the compound having the surface orientation is an alkoxysilane derivative, and the alkoxysilane derivative comprises a fluoroalkyl group having 5 to 17 fluorine atoms. 2. The void-containing layer according to claim 1 , wherein the void-containing layer comprises 10 to 50 mass % of the silica nanoparticles relative to the mass of a skeleton component of the void-containing layer wherein the skeleton component comprises microporous particles of the gel pulverized product. 3. An optical member comprising the void-containing layer according to claim 2 . 4. A laminate obtained by directly laminating the void-containing layer according to claim 1 to a pressure-sensitive adhesive/adhesive layer. 5. An optical member comprising the laminate according to claim 4 . 6. An optical member comprising the void-containing layer according to claim 1 . 7. An optical apparatus comprising the optical member according to claim 6 . 8. The void-containing layer according to claim 1 , wherein the fluoroalkyl group has 9 to 10 fluorine atoms. 9. The void-containing layer according to claim 1 , wherein the void-containing layer has a void fraction of 59 vol % or more.
Assignees
Inventors
Classifications
Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes · CPC title
characterized by the fabrication or manufacturing method · CPC title
- C08J9/008Primary
Nanoparticles · CPC title
- C08J9/009Primary
Use of pretreated compounding ingredients · CPC title
Acrylic polymers · CPC title
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Frequently asked questions
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- What does patent US11384259B2 cover?
- A void-containing layer is disclosed in which a pressure-sensitive adhesive or an adhesive is less likely penetrated into voids. The void-containing layer of the present invention includes: nanoparticles, surfaces of which are modified with a compound having a surface orientation, wherein the void-containing layer has a void fraction of 35 vol %.
- Who is the assignee on this patent?
- Nitto Denko Corp
- What technology area does this patent fall under?
- Primary CPC classification C08J9/008. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 12 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).