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公开(公告)号：US10047239B2
公开(公告)日：2018-08-14
申请号：US15552532
申请日：2016-02-23
发明人： Takanori Morita , Atsushi Miyata , Kasumi Onishi
摘要： The invention provides an organic solvent dispersion of titanium oxide particles in a content of 10% by weight or more in an organic solvent except methanol and ethanol, wherein the titanium oxide particles are surface-treated with a surface treating agent comprising a silane coupling agent having the general formula (I) (RO)n—Si—X4-n (I) wherein R is an alkyl group having carbon atoms of 1-4, n is 2 or 3, X is an alkyl, a fluoroalkyl, a vinyl or a (meth)acryloyloxyalkyl group, and 12-hydroxystearic acid, and wherein the titanium oxide particles in the organic solvent have a D50 in a range of 1 to 30 nm, and wherein the organic solvent dispersion has a transmittance of 2% or more at a wavelength of 500 nm and a transmittance of 70% or more at a wavelength of 800 nm, a viscosity of 10 mPa·s or less at a temperature of 25° C. immediately after production while the increase in the viscosity is 40 mPa·s or less seven days after production as compared to that of the dispersion immediately after production.
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公开(公告)号：US09976036B2
公开(公告)日：2018-05-22
申请号：US15508139
申请日：2015-08-28
发明人： Takanori Morita , Atsushi Miyata , Kasumi Onishi
CPC分类号： C09C3/12 , C01G25/02 , C01P2004/64 , C01P2006/22 , C01P2006/60 , C08K3/22 , C08K9/06 , C08K2003/2244 , C09C1/00
摘要： The invention provides an organic solvent dispersion of zirconium oxide particles in a content of 20% by weight or more in an organic solvent except methanol and ethanol.
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公开(公告)号：US09963355B2
公开(公告)日：2018-05-08
申请号：US15552525
申请日：2016-02-23
发明人： Takanori Morita , Atsushi Miyata , Kasumi Onishi
CPC分类号： C01G23/047 , C09C1/36 , C09C1/3692 , C09C3/08 , C09C3/12 , C09D17/00
摘要： The invention provides a method for producing an organic solvent dispersion of titanium oxide particles in an organic solvent except methanol and ethanol, comprising: (a) a surface treating process for surface treating an alcohol dispersion of titanium oxide particles in at least one alcohol solvent selected from the group consisting of methanol and ethanol with a surface treating agent comprising a silane coupling agent and 12-hydroxystearic acid thereby surface treating the titanium oxide particles; and (b) a solvent replacing process for replacing the alcohol solvent that is a dispersion medium of the alcohol dispersion of titanium oxide particles by the organic solvent except methanol and ethanol, wherein the silane coupling agent has the general formula (I) (RO)n—Si—X4-n (I) wherein R is an alkyl group having carbon atoms of 1-4, n is 2 or 3, X is an alkyl, a fluoroalkyl, a vinyl or a (meth)acryloyloxyalkyl group.
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