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US-9773931-B2 · Sep 26, 2017 · US
Anti-reflective coating on oxide particles for sunscreen applications
US10940101B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10940101-B2 |
| Application number | US-201715825810-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 29, 2017 |
| Priority date | Sep 3, 2015 |
| Publication date | Mar 9, 2021 |
| Grant date | Mar 9, 2021 |
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- Title
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Abstract
Official abstract text for this publication.
Zinc oxide compositions and methods for applying anti-reflective coating on oxide particles for sunscreen applications are provided herein. A composition includes multiple zinc oxide particles suspended within a medium forming sunscreen composition, and two or more coating materials applied to each of the multiple zinc oxide particles in distinct layers via a gradation based on refractive index, wherein each of the coating materials has a refractive index that is between the refractive index of air and the refractive index of zinc oxide, and wherein the two or more coating materials comprise zinc sulfide and titanium dioxide.
First claim
Opening claim text (preview).
What is claimed is: 1. A composition comprising: multiple zinc oxide particles suspended within a medium forming sunscreen composition; and multiple coating materials comprising silicon dioxide, magnesium fluoride, multiple distinct fluoropolymers, zinc sulfide, and titanium dioxide, applied to the outside of each of the multiple zinc oxide particles in five distinct layers: a silicon dioxide layer, a magnesium fluoride layer, a layer of the multiple distinct fluoropolymers, a zinc sulfide layer, and a titanium dioxide layer, wherein the five distinct layers are applied to the outside of each of the multiple zinc oxide particles in an order corresponding to achieving a gradation of the refractive indices of the five distinct layers between that of zinc oxide and that of air. 2. The composition of claim 1 , wherein at least one of the multiple coating materials incorporates a textured surface. 3. The composition of claim 2 , wherein the at least one coating material incorporating a textured surface is the outermost layer applied to each of the multiple zinc oxide particles. 4. The composition of claim 2 , wherein the at least one coating material incorporating a textured surface is the innermost layer applied to each of the multiple zinc oxide particles. 5. The composition of claim 1 , wherein at least one of the multiple coating materials comprises a dense coating material, wherein a dense coating material comprises a solid coating material containing no voids.
Assignees
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Classifications
Fluorides; Derivatives thereof · CPC title
Particles consisting of a mixture of two or more inorganic phases · CPC title
Titanium; Compounds thereof · CPC title
Silicon; Compounds thereof · CPC title
Compositions of homopolymers or copolymers of compounds having one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers, e.g. PVC, PTFE · CPC title
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- What does patent US10940101B2 cover?
- Zinc oxide compositions and methods for applying anti-reflective coating on oxide particles for sunscreen applications are provided herein. A composition includes multiple zinc oxide particles suspended within a medium forming sunscreen composition, and two or more coating materials applied to each of the multiple zinc oxide particles in distinct layers via a gradation based on refractive index…
- Who is the assignee on this patent?
- IBM
- What technology area does this patent fall under?
- Primary CPC classification A61K8/27. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Mar 09 2021 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).