公开(公告)号：US06696034B2

公开(公告)日：2004-02-24

申请号：US09941727

申请日：2001-08-30

申请人： Yasuaki Nozawa ,  Kiyoshi Shirasuna ,  Hidekazu Uehara ,  Keiji Shibata ,  Susumu Ueno

发明人： Yasuaki Nozawa ,  Kiyoshi Shirasuna ,  Hidekazu Uehara ,  Keiji Shibata ,  Susumu Ueno

IPC分类号： C09C130

CPC分类号： C09C1/3081 ,  C01B33/18 ,  C01P2006/12 ,  C01P2006/80 ,  C01P2006/90 ,  Y10T428/2993

摘要： Hydrophobic silica fine powder is produced by pyrolyzing a silane compound to form a silica fine powder and hydrophobizing the silica fine powder with an organohalosilane as hydrophobizing agent in a fluidization vessel. A portion of the silica fine powder is bypassed to a waste gas line from the fluidization vessel and collected with a cyclone and bag filter, and the collected powder is fed to the fluidization vessel where it is hydrophobized. The amount of unreacted organohalosilane in the waste gases is reduced, alleviating the burden on waste gas treatment. The silica having the unreacted organohalosilane borne thereon is fed back to the fluidization vessel, increasing the reaction efficiency of organohalosilane.

摘要翻译： 疏水性二氧化硅细粉末是通过热解硅烷化合物形成二氧化硅细粉末，并将二氧化硅细粉末与作为疏水化剂的有机卤代硅烷在流化槽中疏水化而制造的。 二氧化硅细粉末的一部分从流化槽旁路到废气管线，并用旋风分离器和袋式过滤器收集，并将收集的粉末进料到流化槽中进行疏水化。 废气中未反应的有机卤代硅烷的量减少，减轻了废气处理的负担。 将其上承载有未反应的有机卤代硅烷的二氧化硅反馈给流化槽，提高有机卤代硅烷的反应效率。

公开(公告)号：US06221326B1

公开(公告)日：2001-04-24

申请号：US09171438

申请日：1998-10-20

申请人： Frédéric Amiche

发明人： Frédéric Amiche

IPC分类号： C09C130

CPC分类号： B01J20/28019 ,  A61K8/11 ,  A61K2800/412 ,  A61Q11/00 ,  A61Q19/00 ,  B01J20/103 ,  B01J20/28004 ,  B01J20/28021 ,  B01J20/28057 ,  B82Y30/00 ,  C01B33/18 ,  C01P2004/34 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/12 ,  C08K3/36 ,  C08K7/26 ,  C09C1/024 ,  C09C1/30 ,  C09D7/61 ,  D21H17/68

摘要： A method for preparing hollow particles comprising a dense silica shell, by precipitating active silica from an aqueous alkaline metal silicate on a core constituted in a material other than silica and by eliminating the material without destroying the silica shell. The particles are used as insulating materials; as hollow fillers for polymers, building materials, rubber, paper, paint; as absorbing agents; as toothpaste abrasives or additives; as support for the absorption and/or graining out active matter, the liberation of the active matter being effected by the destruction of the silica core by mechanical rupture or by dissolving the silica shell in a basic medium or by diffusion; as sun screening agents or sun screening agent supports or for the formulation of liquid matter in solid form.

摘要翻译： 一种制备中空颗粒的方法，其包括致密二氧化硅壳，通过在由二氧化硅以外的材料构成的芯上从碱性金属硅酸盐水溶液中沉淀活性二氧化硅，并且通过在不破坏二氧化硅壳的情况下除去该材料。 颗粒用作绝缘材料; 作为聚合物，建筑材料，橡胶，纸，油漆的中空填料; 作为吸收剂; 作为牙膏研磨剂或添加剂; 作为对活性物质的吸收和/或粗粒化的支持，活性物质的释放是通过机械破裂破坏二氧化硅核或通过将二氧化硅壳溶解在碱性介质中或通过扩散而实现的; 作为防晒剂或防晒剂支持或用于制备固体形式的液体物质。