Title:
RUTILE-TYPE TITANIUM OXIDE ORGANOSOL, METHOD FOR PRODUCING RUTILE-TYPE TITANIUM OXIDE ORGANOSOL, HIGH REFRACTIVE INDEX COATING-FORMING COMPOSITION USING SAID RUTILE-TYPE TITANIUM OXIDE ORGANOSOL, AND OPTICAL ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/193262
Kind Code:
A1
Abstract:
[Problem] There has been demand for a titanium oxide organosol that has a high transparency and a high refractive index and that also exhibits an excellent viscosity stability over time. [Solution] A rutile-type titanium oxide organosol according to the present invention comprises a silane coupling agent, a basic additive acting as a deflocculant, a water-insoluble solvent, and rutile-type titanium oxide particles that have been surface-treated with a hydrous oxide of at least one metal species selected from Zr, Ce, Sn, and Fe, the rutile-type titanium oxide organosol being characterized in that the Ti ratio contained in the colloidal particles in the rutile-type titanium oxide organosol is at least 60 mass% when calculated as the oxide, and the ratio of metal species at the colloidal particle surface derived from x-ray photoelectron spectroscopy is 20-50 mass%.
Inventors:
MISHIMA RYOUHEI (JP)
YOKOYAMA NOBUYUKI (JP)
YOKOYAMA NOBUYUKI (JP)
Application Number:
PCT/JP2021/010719
Publication Date:
September 30, 2021
Filing Date:
March 17, 2021
Export Citation:
Assignee:
TAYCA CORP (JP)
International Classes:
C01G23/053; C01G23/04; C09C1/36; C09C3/06; C09C3/12; C09D1/00; C09D7/62; C09D17/00; C09D201/00
Domestic Patent References:
| WO2018181241A1 | 2018-10-04 | |||
| WO2012165620A1 | 2012-12-06 |
Foreign References:
| JP2007246351A | 2007-09-27 |
Attorney, Agent or Firm:
OKA Kenji (JP)
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