Process for the formation of metal oxide nanoparticles coating of a solid substrate
US-10119036-B2 · Nov 6, 2018 · US
Rounded zinc peroxide particles, rounded zinc oxide particles, method for production thereof, cosmetic and heat releasing filler
US9376319B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9376319-B2 |
| Application number | US-201214123874-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 8, 2012 |
| Priority date | Jun 10, 2011 |
| Publication date | Jun 28, 2016 |
| Grant date | Jun 28, 2016 |
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- Title
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Abstract
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An object of the present invention is to provide rounded zinc peroxide particles having a large particle diameter, the rounded zinc peroxide particles having excellent performance because they have an average particle diameter of 0.04 μm or more, a small aspect ratio and a shape close to a spherical shape; rounded zinc oxide particles which are obtained by calcinating the rounded zinc peroxide particles and which have a small aspect ratio and a sharp particle size distribution; a method for production thereof; and a cosmetic and a heat releasing filler each containing the rounded zinc oxide particles. Provided are rounded zinc peroxide particles having an average particle diameter of 0.04 μm or more and an aspect ratio of 2.0 or less, and rounded zinc oxide particles which are obtained by thermally decomposing the rounded zinc peroxide particles and which have an average particle diameter of 0.04 μm or more and an aspect ratio of 2.0 or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for production of rounded zinc oxide particles which have an average particle diameter of 0.1 μm or more and an aspect ratio of 2.0 or less, comprising a step (1) of treating zinc oxide particles with hydrogen peroxide, in which raw material zinc oxide particles are repulped in water to prepare a slurry of raw material zinc oxide particles in a concentration of 10 to 2000 g/l in terms of zinc oxide, an aqueous hydrogen peroxide solution in a concentration of 1 to 500 g/l in terms of hydrogen peroxide is added to the slurry, and the mixture is stirred, and a step (2) of calcinating and thereby thermally decomposing the zinc peroxide obtained in the step (1).
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Classifications
by d-values or two theta-values, e.g. as X-ray diagram · CPC title
Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension · CPC title
Particles with a specific particle size distribution · CPC title
Microsized, i.e. having sizes between 0.1 and 100 microns · CPC title
Surface area · CPC title
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- What does patent US9376319B2 cover?
- An object of the present invention is to provide rounded zinc peroxide particles having a large particle diameter, the rounded zinc peroxide particles having excellent performance because they have an average particle diameter of 0.04 μm or more, a small aspect ratio and a shape close to a spherical shape; rounded zinc oxide particles which are obtained by calcinating the rounded zinc peroxide …
- Who is the assignee on this patent?
- Sueda Satoru, Terabe Atsuki, Hashimoto Mitsuo, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C01B15/047. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 28 2016 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).