公开(公告)号：US09079777B2

公开(公告)日：2015-07-14

申请号：US14533560

申请日：2014-11-05

申请人： TOKUYAMA CORPORATION

发明人： Takayuki Maehara ,  Tadaharu Komatsubara ,  Yuya Yamano ,  Kenichi Ishizu ,  Makoto Sato ,  Hiroaki Taira ,  Hiroshi Kato

IPC分类号： C07F7/02 ,  C01B33/146 ,  C01B13/36 ,  C01B33/18 ,  C01B33/148 ,  C01G23/04 ,  C01G25/02 ,  C07F7/08 ,  C07F7/10

CPC分类号： C01B33/146 ,  C01B13/36 ,  C01B13/363 ,  C01B33/141 ,  C01B33/148 ,  C01B33/154 ,  C01B33/18 ,  C01G23/04 ,  C01G25/02 ,  C01P2004/52 ,  C01P2004/62 ,  C01P2004/64 ,  C07F7/08 ,  C07F7/10 ,  C09C1/3081

摘要： The present invention relates to a method for producing inorganic oxide particles, comprising at least the following steps of: coagulating a dispersion obtained by carrying out the hydrolysis reaction and the polycondensation reaction of a metal alkoxide in the presence of a basic catalyst; filtering the dispersion to obtain particles; and drying the particles, wherein the step of coagulating the dispersion is carried out by adding a coagulant comprising at least one compound selected from the group consisting of carbon dioxide, ammonium carbonate, ammonium hydrogen carbonate and ammonium carbamate to the dispersion. The inorganic oxide particles obtained by the method of the present invention have high purity and are excellent in flowability.

摘要翻译： 本发明涉及无机氧化物粒子的制造方法，至少包括以下步骤：在碱性催化剂的存在下使通过进行水解反应和金属醇盐的缩聚反应得到的分散体凝结; 过滤分散体以获得颗粒; 并干燥所述颗粒，其中通过将至少一种选自二氧化碳，碳酸铵，碳酸氢铵和氨基甲酸铵的化合物的凝结剂加入到分散体中来进行凝固分散体的步骤。 通过本发明的方法获得的无机氧化物颗粒具有高纯度并且流动性优异。

公开(公告)号：US11932543B2

公开(公告)日：2024-03-19

申请号：US16978299

申请日：2019-03-13

申请人： Tokuyama Corporation

发明人： Hiromasa Fujioka ,  Hiroaki Taira ,  Osamu Tanaka

IPC分类号： C01B33/20 ,  C01B13/36 ,  C08K3/34 ,  C08K9/06 ,  C09C1/30 ,  C09C1/36

CPC分类号： C01B33/20 ,  C08K3/34 ,  C08K9/06 ,  C09C1/3081 ,  C09C1/36 ,  C01B13/363 ,  C01P2004/61 ,  C01P2004/62 ,  C08K2003/343 ,  C08K2201/005

摘要： Composite oxide fine particles are produced by sol-gel method under conditions in which coarse particles and aggregated particles are unlikely to be generated, and the composite oxide fine particles are further wet-filtered using a filter to remove the coarse particles and the aggregated particles. Then, a salt is added to a dispersion of the composite oxide fine particles to produce weak aggregates of the composite oxide fine particles in the dispersion. A solid content is separated from the dispersion of the composite oxide fine particles containing the aggregates, and then dried. The solid content is easily made finer because no firm aggregates are generated during the drying. That is, composite oxide fine particles containing no coarse particles and aggregated particles are obtained. Use of a known cracking means can further reduce the amount of coarse particles.