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Supramolecular oxo-anion corrosion inhibitors 发明授权

2023-10-20 4910 646K 0

专利信息

申请日期 2025-07-11 申请号 US10803249
公开(公告)号 US7459102B2 公开(公告)日 2008-12-02
公开国别 US 申请人省市代码 全国
申请人 Martin W Kendig
简介 A corrosion inhibitor that includes several oxo-anion compositions useful for preventing the propagation of pit corrosion on aluminum and aluminum alloys. The oxo-anion compositions may include soluble polymeric oxidic acids comprising combinations of molybdenum, phosphorous, tungsten, and silicon. These compositions are useful as corrosion inhibitors in high-moisture, corrosive environments, such as radiators and cooling systems. For low-moisture environments, these oxo-anion compositions can be reacted with a counter-ion, such as various metals, including, but not limited to the rear earth metals, to form a soluble salt. The salt can then be adsorbed onto a carrier, such as paint pigments, which can then be applied to the surfaces of aluminum and aluminum alloys. These surface adsorbates then become sparingly soluble and are gradually released over time in the presence of an aqueous corrosive agent so as to prevent propagation of pit corrosion. The various compositions can be formed as a coating or absorbed in to a substrate to reduce or inhibit a corrosion of the substrate.


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