Aqueous paint composition, particularly a lacquer or a varnish and an aqueous colloidal dispersion of cerium
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United States of America Patent
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Dec 9, 2008
Grant Date -
Jul 27, 2006
app pub date -
May 27, 2003
filing date -
May 28, 2002
priority date (Note) -
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Abstract
The invention relates to an aqueous paint composition, particularly a lacquer or a varnish and an aqueous colloidal dispersion of cerium. Said dispersion has a pH of at least 7 and comprises an organic acid with at least three acid functions of which the third pK is at most 10 or a salt of said acid with ammonia or an amine. Said composition has an improved water content and mechanical properties which improve throughout the life thereof or the duration of the presence thereof on the substrate for protection.
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