METHOD FOR PRODUCING SURFACE-MODIFIED SILICA NANOPARTICLES, AND SURFACE-MODIFIED SILICA NANOPARTICLES

Title:

METHOD FOR PRODUCING SURFACE-MODIFIED SILICA NANOPARTICLES, AND SURFACE-MODIFIED SILICA NANOPARTICLES

Document Type and Number:

WIPO Patent Application WO/2015/186596

Kind Code:

A1

Abstract:

[Problem] To provide a fluid dispersion obtained by highly dispersing, in an organic carrier fluid, surface-modified silica nanoparticles having high transparency and storage stability. [Solution] A method for producing surface-modified silica nanoparticles, said method comprising: a step for preparing a first silica-nanoparticle fluid dispersion that includes silica nanoparticles and an aqueous carrier fluid; a step for obtaining a second silica-nanoparticle fluid dispersion by substituting the aqueous carrier fluid in the first silica-nanoparticle fluid dispersion with an organic carrier fluid that includes at least one selected from cyclic esters and cyclic amides; and a step for adding, to the second silica-nanoparticle fluid dispersion, a silane coupling agent represented by formula (1) (in the formula, R1 are each independently a C1-C20 hydrocarbon group, and R2 is a C1-C3 hydrocarbon group) so as to modify the surface of the silica nanoparticles.

Inventors:

YANAGITA HIROSHI (JP)
NAKASUGI SHIGEMASA (JP)
HITOKAWA HIROSHI (JP)
KATAYAMA TOMOHIDE (JP)
SAKAMOTO KATSUYUKI (JP)

Application Number:

PCT/JP2015/065382

Publication Date:

December 10, 2015

Filing Date:

May 28, 2015

Export Citation:

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Assignee:

AZ ELECTRONIC MATERIALS LUXEMBOURG SARL (LU)

International Classes:

C01B33/18; C01B33/145; C09C1/30; C09C3/12

Foreign References:

JP2001213617A	2001-08-07
JP2007119310A	2007-05-17
JPH1143319A	1999-02-16
JP2003012320A	2003-01-15

Other References: