发明授权
- 专利标题: Synthetic silica glass powder
- 专利标题(中): 合成石英玻璃粉
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申请号: US500202申请日: 1995-07-10
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公开(公告)号: US5604163A公开(公告)日: 1997-02-18
- 发明人: Hozumi Endo , Kazumi Kimura , Akira Utsunomiya
- 申请人: Hozumi Endo , Kazumi Kimura , Akira Utsunomiya
- 申请人地址: JPX Tokyo
- 专利权人: Mitsubishi Chemical Corporation
- 当前专利权人: Mitsubishi Chemical Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX6-158755 19940711
- 主分类号: C03B8/02
- IPC分类号: C03B8/02 ; C01B33/18 ; C03B19/10 ; C03B20/00 ; C03C3/06 ; C03C12/00
摘要:
A synthetic silica glass powder obtained by calcining a silica gel powder obtained by hydrolysis of a tetraalkoxysilane, said synthetic silica glass powder containing from 1.times.10.sup.-1 to 1.times.10.sup.-4 ppm of boron and having an internal silanol group concentration of at most 150 ppm and an isolated silanol group concentration of at most 5 ppm.
公开/授权文献
- US5027907A Replacement tips for spring harrows 公开/授权日:1991-07-02
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