Method for producing dispersion of iron-containing rutile titanium oxide fine particles, iron-containing rutile titanium oxide fine particles, and use thereof

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12122684
APP PUB NO 20230303403A1
SERIAL NO

18143205

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Provided are titanium oxide fine particles which are excellent in transparency and are less photocatalytically active while maintaining a high refractive index, a dispersion of such fine particles, and a method for producing such a dispersion. The method for producing a dispersion of iron-containing rutile titanium oxide fine particles including a step (1) of neutralizing an aqueous metal mineral acid salt solution containing Ti and Fe in Fe2O3/(TiO2+Fe2O3)=0.001 to 0.010 to form an iron-containing hydrous titanic acid; a step (2) of adding an aqueous hydrogen peroxide solution to form an aqueous solution of iron-containing peroxotitanic acid having an average particle size of 15 to 50 nm; a step (3) of adding a tin compound so as to satisfy TiO2/SnO2=6 to 16; a step (4) of adding a sol of silica-based fine particles which contain Si and a metal element M in SiO2/MOx/2=99.9/0.1 to 80/20, the addition being made so as to satisfy SiO2/(oxides of the other elements)=0.08 to 0.22; and a step (5) of hydrothermally treating the solution obtained in the step (4).

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
JGC CATALYSTS AND CHEMICALS LTD16TH FLOOR SOLID SQUARE EAST BUILDING 580 HORIKAWA-MACHI SAIWAI-KU KAWASAKI-CITY 212-0013

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyazaki, Takumi Kitakyushu, JP 23 145
Muraguchi, Ryo Kitakyushu, JP 33 172
Uehara, Tatsuya Kitakyushu, JP 33 245
Yamaguchi, Jun Kitakyushu, JP 178 1828

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Apr 22, 2028
7.5 Year Payment $3600.00 $1800.00 $900.00 Apr 22, 2032
11.5 Year Payment $7400.00 $3700.00 $1850.00 Apr 22, 2036
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00