- 专利标题: BORON-CONTAINING AMORPHOUS SILICA POWDER AND METHOD OF PRODUCING SAME
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申请号: US18247242申请日: 2021-09-21
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公开(公告)号: US20230365419A1公开(公告)日: 2023-11-16
- 发明人: Yasuyuki MURAKAMI , Satsuki MOTOISHI , Hisao KOIZUMI , Satoshi KOMORI , Hironobu OGATA
- 申请人: SAKAI CHEMICAL INDUSTRY CO., LTD.
- 申请人地址: JP Sakai-shi, Osaka
- 专利权人: SAKAI CHEMICAL INDUSTRY CO., LTD.
- 当前专利权人: SAKAI CHEMICAL INDUSTRY CO., LTD.
- 当前专利权人地址: JP Sakai-shi, Osaka
- 优先权: JP 20167312 2020.10.01
- 国际申请: PCT/JP2021/034575 2021.09.21
- 进入国家日期: 2023-03-29
- 主分类号: C01B33/193
- IPC分类号: C01B33/193
摘要:
Provided is a boron-containing amorphous silica powder more excellent in terms of low temperature sinterability than conventional silica powders. The present invention relates to amorphous silica powder containing boron atoms, the boron-containing amorphous silica powder having an average particle size of 10 to 100 nm, as determined from 40 particles selected at random in a transmission electron micrograph, the boron-containing amorphous silica powder having a decrement in a boron content of 10 mass % or less, when fired under the following conditions:
5 to 10 g of a dried product of the boron-containing amorphous silica powder is filled into an alumina crucible, heated in the atmosphere at 200° C./hour to 1000° C. to 1100° C., maintained as it is for 5 hours, and cooled to room temperature.
5 to 10 g of a dried product of the boron-containing amorphous silica powder is filled into an alumina crucible, heated in the atmosphere at 200° C./hour to 1000° C. to 1100° C., maintained as it is for 5 hours, and cooled to room temperature.
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