发明授权
- 专利标题： Titanium oxide colloidal sol and process for the preparation thereof
- 专利标题（中）： 氧化钛胶体溶胶及其制备方法
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申请号： US09601034申请日： 2000-07-26
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公开(公告)号： US06420437B1公开(公告)日： 2002-07-16
- 发明人: Kazuhiko Mori , Mitsuru Nakamura , Masanobu Tanaka
- 申请人： Kazuhiko Mori , Mitsuru Nakamura , Masanobu Tanaka
- 优先权： JP10-013811 19980127; JP10-282938 19981005
- 主分类号： B01F1714
- IPC分类号： B01F1714
摘要：
A neutral titanium dioxide colloid sol having a high stability in a neutral range and capable of forming a colorless transparent coating even when dried at room temperature is produced by mixing an acid titanium dioxide sol comprising 50 to 100 parts by weight of titanium dioxide colloidal particles and 5 to 50 parts by weight of a chelating agent for titanium ions with 1 to 50 parts by weight of an alkaline substance comprising at least one of alkali metal compounds and amine compounds, and optionally by adjusting the pH value of the liquid mixture to 5 to 10, or adjusting the pH value of the liquid mixture to 6 to 10, and then applying a deionization treatment to the mixture to thereby charge the titanium dioxide colloidal particles with negative electricity.