发明授权
US6159277A Amorphous silica particles having a double structure, process for
producing the same and use
失效
具有双重结构的无定形二氧化硅颗粒,其制造方法和用途
- 专利标题: Amorphous silica particles having a double structure, process for producing the same and use
- 专利标题(中): 具有双重结构的无定形二氧化硅颗粒,其制造方法和用途
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申请号: US96165申请日: 1998-06-12
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公开(公告)号: US6159277A公开(公告)日: 2000-12-12
- 发明人: Masanori Tanaka , Yuuji Washio
- 申请人: Masanori Tanaka , Yuuji Washio
- 申请人地址: JPX Tokyo
- 专利权人: Mizusawa Industrial Chemicals Ltd.
- 当前专利权人: Mizusawa Industrial Chemicals Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX9-171251 19970613
- 主分类号: C01B33/12
- IPC分类号: C01B33/12 ; C09C1/30 ; C09D7/00
摘要:
The present invention provides the amorphous silica particles having a double structure of a core of the dense amorphous silica and a shell of the bulky amorphous silica, having a volume-based median diameter of from 1 to 5 .mu.m and containing not more than 10% by volume of fine particles having a particle diameter of not larger than 0.5 .mu.m. The amorphous silica particles of the double structure have constant particle diameters not only in the powdery state but also in a state where they are blended in a coating material or in a resin, without developing fine particles, exhibit excellent delustering action and antiblocking action, exhibit decreased abrading property, and exhibit excellent resistance against scars or abrasion.
公开/授权文献
- USD429947S Blender base portion 公开/授权日:2000-08-29