发明名称 |
Nanoparticulate, redispersible zinc oxide gels |
摘要 |
A method for the preparation of nano size zinc oxide particles having an average primary particle diameter of less than or equal to 15 nm, which are redispersible in organic solvents and/or water, by basic hydrolysis of at least one zinc compound in alcohol or an alcohol/water mixture. The hydrolysis is carried out with substoichiometric amounts of base, based on the zinc compound. The precipitate which originally forms during hydrolysis is left to mature until the zinc oxide has completely flocculated. This precipitate is then thickened to give a gel and separated off from the supernatant phase.
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申请公布号 |
US6710091(B1) |
申请公布日期 |
2004.03.23 |
申请号 |
US20010913990 |
申请日期 |
2001.08.21 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
WOMELSDORF HERMANN-JENS;HOHEISEL WERNER;PASSING GERD |
分类号 |
A61K8/04;A61K8/27;A61Q17/04;C01G9/02;C08K3/22;(IPC1-7):B01F3/12 |
主分类号 |
A61K8/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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