发明名称 |
METHOD FOR PRODUCING ZIRCONIA COLLOIDS |
摘要 |
The present invention pertains to a method for producing a colloidal suspension of zirconia particles, including successively subjecting a mixture of zirconium oxychloride and an alkali metal halide in an aqueous solvent to hydrothermal treatment at a temperature above 150° C, separating the slurry obtained from the supernatant, and peptizing said slurry by adding a strong acid thereto, and desalting said slurry, for example by ultrafiltration, so as to form a colloidal suspension of zirconia. The present invention also pertains to the transparent colloidal suspension obtainable by this method, and to an optical article, such as an ophthalmic lens, comprising a transparent polymer substrate and at least one coating prepared from a composition comprising said colloidal suspension. |
申请公布号 |
EP2731914(A4) |
申请公布日期 |
2015.04.29 |
申请号 |
EP20110869254 |
申请日期 |
2011.07.12 |
申请人 |
ESSILOR INTERNATIONAL (COMPAGNIE GÉNÉRALE D'OPTIQUE);SHANGHAI UNIVERSITY |
发明人 |
LECLAIRE, YVES;ZHAO, JIAN;SHI, LIYI;WANG, ZHUYI;YUAN, SHUAI;ZHAO, YIN |
分类号 |
C01G25/02;B01J13/00;C03C17/23;G02B15/10 |
主分类号 |
C01G25/02 |
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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