Fluorinated acid compounds, compositions and methods of use
AssigneesVitech International, Inc., Win Chemicals Ltd
InventorRodney Thomson
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Abstract
Novel acid-based chemistries that can be used in various cleaning, de-scaling, rust-removal, brightening, etching and other similar applications, including, but not limited to, those based upon hexafluorozirconic acid and other additives, such as urea in some applications, which are effective for a wide range of applications, while avoiding the health, safety and environmental issues that are often associated with the use of hydrochloric acid and other toxic chemistries.
Claims11
An acid-based cleaning composition for descaling and dissolution of complex silicates which does not release hydrofluoric acid comprising a combination of a hexafluorozirconic acid, an acid salt of the hexafluorozirconic acid, and a corrosion inhibitor.
An acid-based cleaning composition for descaling and dissolution of complex silicates which does not release hydrofluoric acid comprising a combination of a hexafluorozirconic acid and a corrosion inhibitor.
An acid-based cleaning composition for descaling and dissolution of complex silicates which does not release hydrofluoric acid comprising a fluorine containing acid wherein fluorine is combined with a metal, non-metal or metalloid selected from the group consisting of transition metal elements, Group III elements having an atomic weight larger than the atomic weight of boron, Group IV elements having an atomic weight larger than the atomic weight of silicon and Group V elements having an atomic weight larger than the atomic weight of nitrogen.
Dependencies are inferred from the claim text.