Zinc oxide sol and method of making
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United States of America Patent
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Feb 13, 2001
Grant Date -
N/A
app pub date -
Aug 25, 1999
filing date -
Aug 25, 1999
priority date (Note) -
Expired
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Abstract
Disclosed is a zinc-oxide containing sol comprising a core of cerium dioxide sol the surface of which particles is coated with zinc oxide; and the method of making the sol. The sol has a mean particle size of less than 50 nm, is characterized as being clear and transparent and is stabilized to resist agglomeration and particle size increase. An essential part of the disclosed invention is the addition of a positive charged oxide such as yttrium oxide to effect the stabilization before significant changes in transparency, agglomeration and/or particle size increase can occur.
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