Method for Producing Dispersion of Iron-Containing Rutile Titanium Oxide Fine Particles, Iron-Containing Rutile Titanium Oxide Fine Particles, and Use Thereof
US-2020087162-A1 · Mar 19, 2020 · US
Method for producing zirconia-coated titanium oxide fine particles, zirconia-coated titanium oxide fine particles, and use thereof
US12552946B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12552946-B2 |
| Application number | US-202117915609-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 17, 2021 |
| Priority date | Mar 31, 2020 |
| Publication date | Feb 17, 2026 |
| Grant date | Feb 17, 2026 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Provided is a method for producing a zirconia-coated titanium oxide fine particle dispersion which includes (1) a step of preparing a dispersion (1) of titanium oxide fine particles, (2) a step of adding, to the dispersion (1), 1 to 50 parts by mass of an aqueous peroxozirconic acid solution in terms of the mass of ZrO 2 per 100 parts by mass of the titanium oxide fine particles, and then aging reaction fine particles (2a) obtained as a result of a reaction between the titanium oxide fine particles and the peroxozirconic acid to thereby obtain a dispersion (2) of a zirconia-coated titanium oxide fine particle precursor (2b), and (3) a step of adjusting the dispersion (2) to have a solid concentration of 0.01 to 10 mass % and then hydrothermally treating the resulting dispersion (2).
First claim
Opening claim text (preview).
The invention claimed is: 1 . Zirconia-coated titanium oxide fine particles comprising: titanium oxide fine particles satisfying Requirement (a) below; and zirconia coating layers covering the titanium oxide fine particles and satisfying Requirement (b) below, wherein the zirconia-coated titanium oxide fine particles as a whole satisfy Requirement (c) below and have an average particle size of 3 to 50 nm; Requirement (a): The titanium oxide fine particles contain 60 mass % or more of Ti in terms of the mass of TiO 2 and at least one metal element selected from the group consisting of Al, Zr, Sb, Zn, Ni, Fe, Ba, Mg, Sn, Si, and V; Requirement (b): The amount of the zirconia coating layers per 100 parts by mass of the titanium oxide fine particles is 1 to 50 parts by mass in terms of the mass of ZrO 2 ; Requirement (c): When the average particle size and the color fading rate of the titanium oxide fine particles are represented by D1 and PA1, respectively, and the average particle size and the color fading rate of the zirconia-coated titanium oxide fine particles are represented by D4 and PA4, respectively, D4/D1 is 0.8 to 1.2 and PA4/PA1 is 0.4 or less. 2 . The zirconia-coated titanium oxide fine particles according to claim 1 , wherein the titanium oxide fine particles contain Ti and Sn in such amounts that the TiO 2 /SnO 2 mass ratio is 3 to 16. 3 . A dispersion of the zirconia-coated titanium oxide fine particles according to claim 1 . 4 . The zirconia-coated titanium oxide fine particles according to claim 1 , wherein an amount of components other than zirconia in the coating layers is 10% or less by mass.
Assignees
Inventors
Classifications
Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins · CPC title
Coating · CPC title
Coating · CPC title
Ingredients treated with inorganic substances · CPC title
one phase coated with the other · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12552946B2 cover?
- Provided is a method for producing a zirconia-coated titanium oxide fine particle dispersion which includes (1) a step of preparing a dispersion (1) of titanium oxide fine particles, (2) a step of adding, to the dispersion (1), 1 to 50 parts by mass of an aqueous peroxozirconic acid solution in terms of the mass of ZrO 2 per 100 parts by mass of the titanium oxide fine particles, and then agin…
- Who is the assignee on this patent?
- Jgc Catalysts & Chemicals Ltd
- What technology area does this patent fall under?
- Primary CPC classification C09D17/007. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 17 2026 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).