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1. 发明申请

US20100209710A1 MANUFACTURING METHOD OF CORE-SHELL-TYPE CERIA-POLYMER HYBRID NANOPARTICLES AND DISPERSION SOLS OF THEM 有权
标题翻译：核心类型聚合物混合纳米粒子及其分散体的制备方法
公开(公告)号：US20100209710A1
公开(公告)日：2010-08-19
申请号：US12646295
申请日：2009-12-23
申请人： Noriya IZU , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori , Toshio Uchida
发明人： Noriya IZU , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori , Toshio Uchida
IPC分类号： C08K3/22 , B32B1/00
CPC分类号： C09C1/00 , B82Y30/00 , C01F17/0043 , C01P2004/52 , C01P2004/62 , C01P2004/64 , C01P2004/84 , C01P2006/10 , C01P2006/12 , Y10T428/2998
摘要： The invention provides a method for manufacturing spherical, monodispersed core-shell type ceria-polymer hybrid nanoparticles including, a mixing step in which a cerium salt and a polymer are mixed together in a high-boiling-point organic solvent to obtain a mixture, and a heating and reflux step in which this mixture is heated and refluxed at a temperature of 110° C. or more to thereby generate a boiling phenomenon in the heating and reflux step, and rapidly cooling the mixture after the heating and reflux step to precipitate cerium oxide, and a liquid dispersion thereof.
摘要翻译：本发明提供一种制造球形单分散核 - 壳型二氧化铈 - 聚合物杂化纳米颗粒的方法，包括将铈盐和聚合物在高沸点有机溶剂中混合以获得混合物的混合步骤，以及加热回流步骤，其中将该混合物在110℃或更高的温度下加热回流，从而在加热和回流步骤中产生沸腾现象，并在加热和回流步骤后迅速冷却混合物以沉淀铈氧化物及其液体分散体。

2. 发明授权

US09139745B2 Aggregate of spherical core-shell cerium oxide/polymer hybrid nanoparticles and method for producing the same 有权
标题翻译：球形核 - 壳氧化铈/聚合物杂化纳米颗粒的聚集体及其制备方法
公开(公告)号：US09139745B2
公开(公告)日：2015-09-22
申请号：US13389140
申请日：2010-07-23
申请人： Noriya Izu , Toshio Uchida , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori
发明人： Noriya Izu , Toshio Uchida , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori
IPC分类号： C08K3/22 , B82Y30/00 , C09D11/10 , C01F17/00 , C09D11/037
CPC分类号： C09D11/10 , B82Y30/00 , C01F17/0043 , C01P2004/03 , C01P2004/32 , C01P2004/64 , C01P2004/84 , C09D11/037
摘要： The present invention provides an aggregate of spherical core-shell cerium oxide/polymer hybrid nanoparticles, a process for producing the same, and a product such as an anti-reflection film having a high refractive index layer. The present invention relates to an aggregate of spherical core-shell cerium oxide/polymer hybrid nanoparticles in which the core and shell are cerium oxide and a polymer, respectively, and the aggregate is highly concentrated, with a volume fraction of the spherical core-shell cerium oxide/polymer hybrid nanoparticles being at least 32% or higher, the aggregate contains a fixing agent, the aggregate is configured such that the fixing agent fills in voids between the spherical core-shell cerium oxide/polymer hybrid nanoparticles, the aggregate has a uniform distribution of the core-shell cerium oxide/polymer hybrid nanoparticles, which are spherical secondary particles synthesized by the polyol method, and the aggregate has excellent mechanical strength, light transmittance, and UV light-blocking properties; and the present invention further relates a process for producing the same; and an antireflection film and ink having the same.
摘要翻译：本发明提供球形核 - 壳氧化铈/聚合物杂化纳米粒子的集合体，其制造方法以及具有高折射率层的抗反射膜等制品。本发明涉及一种球形核 - 壳氧化铈/聚合物杂化纳米颗粒的集合体，其中核和壳分别为氧化铈和聚合物，聚集体高度浓缩，体积分数为球形核 - 壳氧化铈/聚合物杂化纳米粒子为至少32％以上，聚集体含有固色剂，所述骨料被构造为使得固定剂填充在球形核 - 壳氧化铈/聚合物杂化纳米颗粒之间的空隙中，聚集体具有通过多元醇法合成的球形二次粒子的核 - 壳氧化铈/聚合物杂化纳米粒子的均匀分布，骨料具有优异的机械强度，透光率和UV遮光性; 本发明还涉及其制造方法; 以及具有该防反射膜和防反射膜的墨。

3. 发明授权

US08846785B2 Manufacturing method of core-shell-type ceria-polymer hybrid nanoparticles and dispersion sols of them 有权
标题翻译：核壳型二氧化铈 - 聚合物杂化纳米粒子及其分散溶胶的制备方法
公开(公告)号：US08846785B2
公开(公告)日：2014-09-30
申请号：US12646295
申请日：2009-12-23
申请人： Noriya Izu , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori , Toshio Uchida
发明人： Noriya Izu , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori , Toshio Uchida
IPC分类号： C08K9/10 , B82Y30/00 , C09C1/00 , C01F17/00
CPC分类号： C09C1/00 , B82Y30/00 , C01F17/0043 , C01P2004/52 , C01P2004/62 , C01P2004/64 , C01P2004/84 , C01P2006/10 , C01P2006/12 , Y10T428/2998
摘要： The invention provides a method for manufacturing spherical, monodispersed core-shell type ceria-polymer hybrid nanoparticles including, a mixing step in which a cerium salt and a polymer are mixed together in a high-boiling-point organic solvent to obtain a mixture, and a heating and reflux step in which this mixture is heated and refluxed at a temperature of 110° C. or more to thereby generate a boiling phenomenon in the heating and reflux step, and rapidly cooling the mixture after the heating and reflux step to precipitate cerium oxide, and a liquid dispersion thereof.
摘要翻译：本发明提供一种制造球形单分散核 - 壳型二氧化铈 - 聚合物杂化纳米颗粒的方法，其包括将铈盐和聚合物在高沸点有机溶剂中混合以获得混合物的混合步骤，以及加热回流步骤，其中将该混合物在110℃或更高的温度下加热回流，从而在加热和回流步骤中产生沸腾现象，并在加热和回流步骤后迅速冷却混合物以沉淀铈氧化物及其液体分散体。

4. 发明申请

US20120142808A1 Aggregate of Spherical Core-Shell Cerium Oxide/Polymer Hybrid Nanoparticles and Method for Producing the Same 有权
标题翻译：球形核 - 壳氧化铈/聚合物杂化纳米粒子的聚集体及其制备方法
公开(公告)号：US20120142808A1
公开(公告)日：2012-06-07
申请号：US13389140
申请日：2010-07-23
申请人： Noriya Izu , Toshio Uchida , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori
发明人： Noriya Izu , Toshio Uchida , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori
IPC分类号： C08K3/22 , C08J3/28 , B82Y30/00 , B82Y40/00
CPC分类号： C09D11/10 , B82Y30/00 , C01F17/0043 , C01P2004/03 , C01P2004/32 , C01P2004/64 , C01P2004/84 , C09D11/037
摘要： The present invention provides an aggregate of spherical core-shell cerium oxide/polymer hybrid nanoparticles, a process for producing the same, and a product such as an anti-reflection film having a high refractive index layer. The present invention relates to an aggregate of spherical core-shell cerium oxide/polymer hybrid nanoparticles in which the core and shell are cerium oxide and a polymer, respectively, and the aggregate is highly concentrated, with a volume fraction of the spherical core-shell cerium oxide/polymer hybrid nanoparticles being at least 32% or higher, the aggregate contains a fixing agent, the aggregate is configured such that the fixing agent fills in voids between the spherical core-shell cerium oxide/polymer hybrid nanoparticles, the aggregate has a uniform distribution of the core-shell cerium oxide/polymer hybrid nanoparticles, which are spherical secondary particles synthesized by the polyol method, and the aggregate has excellent mechanical strength, light transmittance, and UV light-blocking properties; and the present invention further relates a process for producing the same; and an antireflection film and ink having the same.
摘要翻译：本发明提供球形核 - 壳氧化铈/聚合物杂化纳米粒子的集合体，其制造方法以及具有高折射率层的抗反射膜等制品。本发明涉及一种球形核 - 壳氧化铈/聚合物杂化纳米颗粒的集合体，其中核和壳分别为氧化铈和聚合物，聚集体高度浓缩，体积分数为球形核 - 壳氧化铈/聚合物杂化纳米粒子为至少32％以上，聚集体含有固色剂，所述骨料被构造为使得固定剂填充在球形核 - 壳氧化铈/聚合物杂化纳米颗粒之间的空隙中，聚集体具有通过多元醇法合成的球形二次粒子的核 - 壳氧化铈/聚合物杂化纳米粒子的均匀分布，骨料具有优异的机械强度，透光率和UV遮光性; 本发明还涉及其制造方法; 以及具有该防反射膜和防反射膜的墨。

5. 发明授权

US08647679B2 Core-shell type zinc oxide microparticle or dispersion containing the microparticle, and production process and use of the microparticle or the dispersion 有权
标题翻译：含有微粒的核壳型氧化锌微粒或分散体，以及微粒或分散体的制造方法和用途
公开(公告)号：US08647679B2
公开(公告)日：2014-02-11
申请号：US12865464
申请日：2009-02-06
申请人： Noriya Izu , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori
发明人： Noriya Izu , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori
IPC分类号： A61K33/32 , A61K8/00 , A61K9/00 , A01N25/26 , A01N55/02
CPC分类号： A61K8/27 , A61K8/0275 , A61K8/731 , A61K8/8176 , A61K2800/412 , A61K2800/624 , A61Q17/04 , B82Y30/00 , C01G9/02 , C01P2002/72 , C01P2002/82 , C01P2002/88 , C01P2004/03 , C01P2004/04 , C01P2004/62 , C01P2004/64 , C01P2004/84 , C09C1/043
摘要： Disclosed herein are core-shell type zinc oxide microparticles, a dispersion containing such microparticles, and a production process and uses of the microparticles and the dispersion. As disclosed herein, the core-shell type zinc oxide microparticles have an average particle diameter of from 50 to 1,000 nm. The core is a secondary particle of spherical shape to the surface of which a polymer is attached as a shell. Methods for making the microparticles include the steps of: mixing together a zinc salt and a polymer in an organic solvent so as to obtain a mixture; and heating/refluxing the mixture at a predetermined temperature so as to cause core-shell type zinc oxide microparticles to precipitate, wherein the zinc salt is zinc acetate; and uses such as cosmetics, resins and fibers which contain the core-shell type zinc oxide microparticles and have an ultraviolet light blocking action.
摘要翻译：本文公开了核 - 壳型氧化锌微粒，含有这种微粒的分散体，以及微粒和分散体的制造方法和用途。如本文所公开的，核 - 壳型氧化锌微粒的平均粒径为50〜1000nm。核心是其表面上的球形二次颗粒，其中聚合物作为壳连接。制造微粒的方法包括以下步骤：在有机溶剂中将锌盐和聚合物混合在一起以获得混合物; 并在预定温度下加热/回流混合物以使核壳型氧化锌微粒沉淀，其中锌盐为乙酸锌; 并且使用含有核 - 壳型氧化锌微粒的化妆品，树脂和纤维，并且具有紫外线阻挡作用。

6. 发明申请

US20110003156A1 Core-Shell Type Cobalt Oxide Microparticle or Dispersion Containing the Microparticle, and Production Process and Use of the Microparticle or the Dispersion 审中-公开
标题翻译：核 - 壳型钴酸锂微粒或含有微粒的分散体，以及微粒或分散体的制备方法和用途
公开(公告)号：US20110003156A1
公开(公告)日：2011-01-06
申请号：US12865427
申请日：2009-02-06
申请人： Noriya Izu , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori
发明人： Noriya Izu , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori
IPC分类号： B32B5/16 , B01J13/02
CPC分类号： C01G51/04 , B82Y30/00 , C01P2002/72 , C01P2002/82 , C01P2002/88 , C01P2004/03 , C01P2004/04 , C01P2004/51 , C01P2004/62 , C01P2004/64 , C01P2004/84 , C09C1/00 , Y10T428/2998
摘要： The objects of the present invention are to provide core-shell type cobalt oxide microparticles, a dispersion containing such microparticles, and a production process and uses of the microparticles and the dispersion, and the invention is directed at: core-shell type cobalt oxide microparticles having an average particle diameter of from 50 to 200 nm, wherein the core is a secondary particle of spherical shape to a surface of which an organic polymer is attached as the shell; a dispersion of such cobalt oxide microparticles; a dry powder obtained from such a cobalt oxide microparticle dispersion; a process for producing core-shell type cobalt oxide microparticles or a dispersion thereof, which process includes the steps of: mixing together a cobalt salt and an organic polymer in an organic solvent so as to obtain a mixture; and heating/refluxing the mixture at a predetermined temperature so as to cause core-shell type cobalt oxide microparticles to precipitate, wherein the cobalt salt is cobalt acetate; and uses of the cobalt oxide microparticles, the dispersion and the dry powder.
摘要翻译：本发明的目的是提供核 - 壳型氧化钴微粒，含有这种微粒的分散体以及微粒和分散体的制造方法和用途，本发明涉及：核 - 壳型氧化钴微粒平均粒径为50〜200nm，其中芯是作为外壳附着有有机聚合物的表面的球形二次粒子; 这种钴氧化物微粒的分散体; 由这种氧化钴微粒分散体得到的干燥粉末; 一种生产核 - 壳型钴氧化物微粒或其分散体的方法，该方法包括以下步骤：在有机溶剂中将钴盐和有机聚合物混合在一起得到混合物; 并在预定温度下加热/回流混合物，以使核 - 壳型氧化钴微粒沉淀，其中钴盐是乙酸钴; 以及氧化钴微粒，分散体和干粉的用途。

7. 发明申请

US20100330008A1 Core-Shell Type Zinc Oxide Microparticle or Dispersion Containing the Microparticle, and Production Process and Use of the Microparticle or the Dispersion 有权
标题翻译：含有微粒的核 - 壳型氧化锌微粒或分散体以及微粒或分散体的制备方法和用途
公开(公告)号：US20100330008A1
公开(公告)日：2010-12-30
申请号：US12865464
申请日：2009-02-06
申请人： Noriya Izu , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori
发明人： Noriya Izu , Ichiro Matsubara , Toshio Itoh , Woosuck Shin , Maiko Nishibori
IPC分类号： A61K8/27 , A61K8/02 , A61Q17/04 , B01J23/06 , B01J37/08 , B01J31/06 , F21V9/06 , G02B5/22
CPC分类号： A61K8/27 , A61K8/0275 , A61K8/731 , A61K8/8176 , A61K2800/412 , A61K2800/624 , A61Q17/04 , B82Y30/00 , C01G9/02 , C01P2002/72 , C01P2002/82 , C01P2002/88 , C01P2004/03 , C01P2004/04 , C01P2004/62 , C01P2004/64 , C01P2004/84 , C09C1/043
摘要： The objects of the present invention are to provide core-shell type zinc oxide microparticles, a dispersion containing such microparticles, and a production process and uses of the microparticles and the dispersion, and the invention is directed at: core-shell type zinc oxide microparticles having an average particle diameter of from 50 to 1,000 nm, wherein a core is a secondary particle of spherical shape to the surface of which a polymer is attached as a shell; a dispersion of such zinc oxide microparticles; a dry powder obtained from such a zinc oxide microparticle dispersion; a process for producing core-shell type zinc oxide microparticles or a dispersion thereof, which process includes the steps of: mixing together a zinc salt and a polymer in an organic solvent so as to obtain a mixture; and heating/refluxing the mixture at a predetermined temperature so as to cause core-shell type zinc oxide microparticles to precipitate, wherein the zinc salt is zinc acetate; and uses such as cosmetics, resins and fibers which contain the core-shell type zinc oxide microparticles and have an ultraviolet light blocking action.
摘要翻译：本发明的目的是提供核 - 壳型氧化锌微粒，含有这种微粒的分散体以及微粒和分散体的制造方法和用途，本发明涉及：核 - 壳型氧化锌微粒平均粒径为50〜1000nm，其中核是作为壳体附着有聚合物的表面的球形二次粒子; 这种氧化锌微粒的分散体; 由这种氧化锌微粒分散体得到的干燥粉末; 制造核 - 壳型氧化锌微粒或其分散体的方法，该方法包括以下步骤：将锌盐和聚合物在有机溶剂中混合以获得混合物; 并在预定温度下加热/回流混合物以使核壳型氧化锌微粒沉淀，其中锌盐为乙酸锌; 并且使用含有核 - 壳型氧化锌微粒的化妆品，树脂和纤维，并且具有紫外线阻挡作用。

8. 发明申请

US20100056361A1 PROCESS FOR PRODUCING DISPERSION OF FINE CORE/SHELL TYPE METAL OXIDE PARTICLES AND DISPERSION 审中-公开
标题翻译：生产细核/壳型金属氧化物颗粒和分散体的分散方法
公开(公告)号：US20100056361A1
公开(公告)日：2010-03-04
申请号：US12444508
申请日：2007-10-04
申请人： Noriya Izu , Ichiro Matsubara , Toshio Itoh , Woosuck Shin
发明人： Noriya Izu , Ichiro Matsubara , Toshio Itoh , Woosuck Shin
IPC分类号： B01J31/06 , C08K3/22
CPC分类号： B01J13/14 , B82Y30/00 , C01B13/32 , C01F17/0043 , C01G9/02 , C01G99/006 , C01P2002/72 , C01P2002/82 , C01P2002/88 , C01P2004/03 , C01P2004/04 , C01P2004/10 , C01P2004/32 , C01P2004/52 , C01P2004/61 , C01P2004/62 , C01P2004/64 , C01P2004/84 , C01P2006/22 , C09C3/10
摘要： The present invention is to provide a process for producing a dispersion of fine core/shell type metal oxide particles and the dispersion thereby produced, the present invention are a process for producing a dispersion of fine core/shell type metal oxide particles comprising the steps of mixing a metal salt and a polymer in an organic solvent to obtain a mixture and heating this mixture under reflux at a prescribed temperature to precipitate metal oxide, wherein the metal salt is a nitrate salt or acetate salt and the particle diameter of the fine core/shell type metal oxide particles is adjusted using the molecular weight of the polymer, and a dispersion of fine core/shell type metal oxide particles obtained by the process, which does not undergo sedimentation even after standing for at least one day, and exhibits long-term stability, and a powder thereof.
摘要翻译：本发明提供一种核/壳型金属氧化物微粒分散体的制造方法及其制造的分散体，本发明是一种核/壳型金属氧化物微粒分散体的制造方法，其特征在于，将金属盐和聚合物在有机溶剂中混合以获得混合物，并在规定温度下将该混合物加热回流以沉淀金属氧化物，其中金属盐为硝酸盐或乙酸盐，细芯/ 使用聚合物的分子量调节壳型金属氧化物粒子，通过该方法获得的细芯/壳型金属氧化物粒子的分散体，即使在静置至少一天后也不会沉降，长期稳定性及其粉末。

9. 发明授权

US09216305B2 Core-shell-type cerium oxide microparticle, dispersion solution comprising the microparticle, and process for production of the microparticle or dispersion solution 有权
标题翻译：核壳型氧化铈微粒，包含微粒的分散液，以及微粒或分散液的制造方法
公开(公告)号：US09216305B2
公开(公告)日：2015-12-22
申请号：US12444799
申请日：2007-10-09
申请人： Noriya Izu , Ichiro Matsubara , Woosuck Shin , Toshio Itoh
发明人： Noriya Izu , Ichiro Matsubara , Woosuck Shin , Toshio Itoh
IPC分类号： C01F1/00 , A61Q17/04 , A61K8/02 , A61K8/11 , A61K8/19 , A61K8/73 , A61K8/81 , B01J13/14 , B82Y30/00 , C01F17/00
CPC分类号： A61Q17/04 , A61K8/0275 , A61K8/11 , A61K8/19 , A61K8/731 , A61K8/8176 , A61K2800/413 , A61K2800/437 , A61K2800/624 , B01J13/14 , B82Y30/00 , C01F17/0043 , C01P2002/82 , C01P2002/84 , C01P2002/88 , C01P2004/02 , C01P2004/03 , C01P2004/04 , C01P2004/32 , C01P2004/52 , C01P2004/64 , C01P2004/84 , Y10T428/2998
摘要： An object of the present invention is to provide a core-shell-type cerium oxide microparticle, a dispersion solution comprising the microparticle, and a process for production of the microparticle or dispersion solution, and to achieve the object, the present invention provides a core-shell-type cerium oxide microparticle which has an average particle diameter of 30 to 200 nm and a coefficient of variation therein no greater than 0.25, and in which the secondary particle forming the core portion is spherical in shape and a polymer is attached to its surface, a dispersion solution of this cerium oxide microparticle and a dry powder from the cerium oxide microparticle dispersion solution, and a process of producing a core-shell-type cerium oxide microparticle or a dispersion solution thereof, which comprises the steps of: mixing a cerium salt and a polymer in an organic solvent to obtain a mixture; and heating this mixture under reflux at a prescribed temperature to precipitate core-shell-type cerium oxide microparticles, wherein the cerium salt is cerium nitrate and the particle diameter of the microparticles is adjusted using the molecular weight of the polymer.
摘要翻译：本发明的目的是提供一种核 - 壳型氧化铈微粒，包含该微粒的分散溶液以及该微粒或分散液的制造方法，其目的在于提供一种核壳型氧化铈微粒，其平均粒径为30〜200nm，变异系数不大于0.25，其中形成芯部的二次粒子为球状，聚合物附着于其上表面，该氧化铈微粒的分散溶液和来自氧化铈微粒分散液的干粉，以及制备核 - 壳型氧化铈微粒或其分散液的方法，其包括以下步骤：将铈盐和聚合物在有机溶剂中得到混合物; 并在规定的温度下将该混合物加热回流以析出核 - 壳型氧化铈微粒，其中铈盐为硝酸铈，并使用聚合物的分子量调节微粒的粒径。

10. 发明申请

US20100015188A1 CORE-SHELL-TYPE CERIUM OXIDE MICROPARTICLE, DISPERSION SOLUTION COMPRISING THE MICROPARTICLE, AND PROCESS FOR PRODUCTION OF THE MICROPARTICLE OR DISPERSION SOLUTION 有权
标题翻译：核心型氧化铈微球，包含微生物的分散溶液，以及微生物或分散液的生产方法
公开(公告)号：US20100015188A1
公开(公告)日：2010-01-21
申请号：US12444799
申请日：2007-10-09
申请人： Noriya Izu , Ichiro Matsubara , Woosuck Shin , Toshio Itoh
发明人： Noriya Izu , Ichiro Matsubara , Woosuck Shin , Toshio Itoh
IPC分类号： A61K8/19 , A61K8/02 , C08K3/22 , A61Q17/04 , B32B5/16
CPC分类号： A61Q17/04 , A61K8/0275 , A61K8/11 , A61K8/19 , A61K8/731 , A61K8/8176 , A61K2800/413 , A61K2800/437 , A61K2800/624 , B01J13/14 , B82Y30/00 , C01F17/0043 , C01P2002/82 , C01P2002/84 , C01P2002/88 , C01P2004/02 , C01P2004/03 , C01P2004/04 , C01P2004/32 , C01P2004/52 , C01P2004/64 , C01P2004/84 , Y10T428/2998
摘要： An object of the present invention is to provide a core-shell-type cerium oxide microparticle, a dispersion solution comprising the microparticle, and a process for production of the microparticle or dispersion solution, and to achieve the object, the present invention provides a core-shell-type cerium oxide microparticle which has an average particle diameter of 30 to 200 nm and a coefficient of variation therein no greater than 0.25, and in which the secondary particle forming the core portion is spherical in shape and a polymer is attached to its surface, a dispersion solution of this cerium oxide microparticle and a dry powder from the cerium oxide microparticle dispersion solution, and a process of producing a core-shell-type cerium oxide microparticle or a dispersion solution thereof, which comprises the steps of: mixing a cerium salt and a polymer in an organic solvent to obtain a mixture; and heating this mixture under reflux at a prescribed temperature to precipitate core-shell-type cerium oxide microparticles, wherein the cerium salt is cerium nitrate and the particle diameter of the microparticles is adjusted using the molecular weight of the polymer.
摘要翻译：本发明的目的是提供一种核 - 壳型氧化铈微粒，包含该微粒的分散溶液以及该微粒或分散液的制造方法，其目的在于提供一种核壳型氧化铈微粒，其平均粒径为30〜200nm，变异系数不大于0.25，其中形成芯部的二次粒子为球状，聚合物附着于其上表面，该氧化铈微粒的分散溶液和来自氧化铈微粒分散液的干粉，以及制备核 - 壳型氧化铈微粒或其分散液的方法，其包括以下步骤：将铈盐和聚合物在有机溶剂中得到混合物; 并在规定的温度下将该混合物加热回流以析出核 - 壳型氧化铈微粒，其中铈盐为硝酸铈，并使用聚合物的分子量调节微粒的粒径。

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