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1. 发明授权

US10239758B2 Silica sol and method for producing silica sol 有权
公开(公告)号：US10239758B2
公开(公告)日：2019-03-26
申请号：US14896219
申请日：2014-06-05
申请人： NISSAN CHEMICAL INDUSTRIES, LTD.
发明人： Keiko Yoshitake , Naohiko Suemura , Megumi Shimada , Ichitaro Kikunaga
IPC分类号： C01B33/141 , C01B33/145
摘要： A silica sol which has excellent moisture absorption resistance and stability as well as high purity and which does not cause coloring of a solvent or a resin to which the silica sol has been applied. The silica sol contains high-purity silica particles, water and/or a liquid organic medium serving as a dispersion medium, and an organic base compound, the silica particles being dispersed in the dispersion medium, wherein the silica particles satisfy the following requirements (a) to (c): (a) the silica particles have a specific surface area, as determined through a nitrogen absorption method, of 20 to 500 m2/g; (b) the silica particles have a moisture absorption amount per specific surface area thereof of 0.5 mg/m2 or less; and (c) the organic base compound is not substantially contained in the inside thereof.

2. 发明授权

US09777141B2 Silica-containing resin composition and method for producing same, and molded article produced from silica-containing resin composition 有权
公开(公告)号：US09777141B2
公开(公告)日：2017-10-03
申请号：US14896070
申请日：2014-06-05
申请人： NISSAN CHEMICAL INDUSTRIES, LTD.
发明人： Keiko Yoshitake , Ichitaro Kikunaga , Ai Miyamoto , Megumi Shimada
IPC分类号： C08K3/36 , C08K9/06 , C01B33/145 , C08L101/00 , C01B33/141 , C01B33/148 , C09C1/30
CPC分类号： C08K9/06 , C01B33/141 , C01B33/145 , C01B33/148 , C01P2006/12 , C08K3/36 , C08K2201/006 , C08L101/00 , C09C1/3081
摘要： A silica-containing resin composition, characterized by containing a resin and silica particles in an amount of 5 to 300 parts by mass, with respect to 100 parts by mass of the resin, wherein the silica particles satisfy the following requirements (a) to (c): (a) the silica particles have a specific surface area, as determined through a nitrogen absorption method, of 20 to 500 m2/g; (b) the silica particles have a percent moisture absorption of 5.0 mass % or less at a relative humidity of 50%; and (c) the silica particles contain substantially no metallic impurity or halogen.

3. 发明授权

US09527749B2 Colloidal silica particles, process for producing the same, and organic solvent-dispersed silica sol, polymerizable compound-dispersed silica sol, and dicarboxylic anhydride-dispersed silica sol each obtained from the same 有权
标题翻译：胶体二氧化硅粒子，其制造方法，有机溶剂分散二氧化硅溶胶，可聚合化合物分散二氧化硅溶胶和二羧酸酐分散二氧化硅溶胶各自得自其
公开(公告)号：US09527749B2
公开(公告)日：2016-12-27
申请号：US15011001
申请日：2016-01-29
申请人： NISSAN CHEMICAL INDUSTRIES, LTD.
发明人： Naohiko Suemura , Keiko Yoshitake , Toshiaki Takeyama
IPC分类号： C01B33/14 , B82Y30/00 , C01B33/145 , C01B33/146 , C08K3/36
CPC分类号： C01B33/14 , B82Y30/00 , C01B33/145 , C01B33/146 , C01P2004/64 , C08K3/36
摘要： There is provided colloidal silica particles comprising at least one polyvalent metal element M selected from a group consisting of iron, aluminum, zinc, zirconium, titanium, tin, and lead in an average content of 0.001 to 0.02 in terms of an M/Si molar ratio, and having an average primary particle diameter of 5 to 40 nm, wherein the content of the polyvalent metal element M present in an outermost layer of the colloidal particles is 0 to 0.003 atom per square nanometer (nm2) of a surface area of the colloidal particles; and a silica sol that the colloidal silica particles are dispersed in an organic solvent, a silica sol that the colloidal silica particles are dispersed in a polymerizable compound, and a silica sol that the colloidal silica particles are dispersed in a dicarboxylic anhydride.
摘要翻译：提供的胶体二氧化硅颗粒包含选自铁，铝，锌，锆，钛，锡和铅中的至少一种多价金属元素M，平均含量换算成M / Si摩尔数为0.001至0.02 比率，平均一次粒径为5〜40nm，其中存在于胶体粒子的最外层的多价金属元素M的含量为0〜0.003原子/平方纳米（nm 2）的表面积胶体颗粒; 和胶体二氧化硅粒子分散在有机溶剂中的二氧化硅溶胶，胶态二氧化硅粒子分散在聚合性化合物中的二氧化硅溶胶和胶体二氧化硅粒子分散在二羧酸酐中的二氧化硅溶胶。

4. 发明授权

US09376322B2 Process for producing colloidal silica particles 有权
标题翻译：胶体二氧化硅粒子的制造方法
公开(公告)号：US09376322B2
公开(公告)日：2016-06-28
申请号：US14851863
申请日：2015-09-11
申请人： NISSAN CHEMICAL INDUSTRIES, LTD.
发明人： Naohiko Suemura , Keiko Yoshitake , Toshiaki Takeyama
IPC分类号： C01B33/14 , B82Y30/00 , C01B33/145 , C01B33/146
CPC分类号： C01B33/14 , B82Y30/00 , C01B33/145 , C01B33/146 , C01P2004/64 , C08K3/36
摘要： There is provided colloidal silica particles comprising at least one polyvalent metal element M selected from a group consisting of iron, aluminum, zinc, zirconium, titanium, tin, and lead in an average content of 0.001 to 0.02 in terms of an M/Si molar ratio, and having an average primary particle diameter of 5 to 40 nm, wherein the content of the polyvalent metal element M present in an outermost layer of the colloidal particles is 0 to 0.003 atom per square nanometer (nm2) of a surface area of the colloidal particles; and a silica sol that the colloidal silica particles are dispersed in an organic solvent, a silica sol that the colloidal silica particles are dispersed in a polymerizable compound, and a silica sol that the colloidal silica particles are dispersed in a dicarboxylic anhydride.
摘要翻译：提供的胶体二氧化硅颗粒包含选自铁，铝，锌，锆，钛，锡和铅中的至少一种多价金属元素M，平均含量换算成M / Si摩尔数为0.001至0.02 比率，平均一次粒径为5〜40nm，其中存在于胶体粒子的最外层的多价金属元素M的含量为0〜0.003原子/平方纳米（nm 2）的表面积胶体颗粒; 和胶体二氧化硅粒子分散在有机溶剂中的二氧化硅溶胶，胶态二氧化硅粒子分散在聚合性化合物中的二氧化硅溶胶和胶体二氧化硅粒子分散在二羧酸酐中的二氧化硅溶胶。

5. 发明授权

US10173901B2 Silica particles, manufacturing method for the same, and silica sol 有权
公开(公告)号：US10173901B2
公开(公告)日：2019-01-08
申请号：US15101154
申请日：2014-12-11
申请人： NISSAN CHEMICAL INDUSTRIES, LTD.
发明人： Keiko Yoshitake , Ai Umeda , Ichitaro Kikunaga
IPC分类号： C01B33/141 , C01B33/18 , C01B33/145
摘要： The invention provides silica particles, formed from an alkoxysilane serving as a raw material, characterized in that the silica particles satisfy the following requirements (a) to (c): (a) the silica particles have an alkali metal element content of 5 ppm or less, with respect to the silica solid content; (b) the silica particles exhibit a moisture absorption of 0.25 mg/m2 or less at 50% relative humidity, and a refractive index, as determined through the liquid immersion method, of 1.450 to 1.460; and (c) the silica particles have a mean primary particle size, derived from a specific surface area as determined through the nitrogen adsorption method, of 10 to 100 nm.

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