Anti-corrosive particles
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United States of America Patent
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Aug 2, 2016
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app pub date -
Dec 8, 2009
filing date -
Dec 8, 2008
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Abstract
The present invention relates to anti-corrosive particles based on inorganic oxide products such as silica or alumina modified with polyvalent metal cations optionally comprising anions of weak acids which may be inorganic or organic in nature and their conjugate species. In particular, the present invention is concerned with anti-corrosive pigment particles comprising inorganic oxides or mixtures of inorganic oxides displaying mesoporosity and/or macroporosity such that the average pore size, averaged over the mixture of inorganic oxides where more than one oxide is involved is greater than 2 nm and the average pore volume is greater than 0.2 ml/g. The present invention is also related to methods of making such particles and to anti-corrosive compositions made with them. The present invention further relates to articles to which the anti-corrosive compositions have been applied.
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