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Honeywell's novel process provides for both purification and reinhibition of recycled antifreeze/coolant (A/C) used in the cooling systems of internal combustion engines. Conventional "used" A/C lacks adequate corrosion inhibiting chemicals. This technology correlates the concentration of silicate, reserve alkalinity, and corrosion inhibitors in the used A/C to the concentration of the chemical components of the "reinhibitor package." Based on the particular recycling process used for the A/C, the concentrations of components in the reinhibitor package reflect the "chemical footprint" of the recycled A/C. This important correlation takes into account the wide range of compositions used in ethylene glycol-based A/Cs and results in a high quality, cost effective product.
Benefits SummaryThe invention includes the discriminating addition of a suitable corrosion inhibitor package based upon the characteristics of the recycled, used A/C. The "smart" addition of inhibitor results in a recycled coolant composition having corrosion capabilities equal to or superior to that of the original AC--at a very resonable cost. When employed, the reinhibition of recycled, used A/C provides a lower cost alternative to virgin A/C. The problem of proper disposal of used A/C is avoided. more
Development SummaryThe technology has been proven and commercialized. more
IP SummaryThis technology is supported by 1 US patent. The most recent year of issue is 1995. more
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