COORDINATED METAL COMPOUNDS FOR REDUCING CHROMIUM

Methods and compositions involving the use of nitrogen-containing coordinated metal compounds for stabilizing chromium Vl reducing metal cations. Exemplary uses include processes for making cement, and exemplary compositions include cement additives, concrete admixtures, as well as hydratable cement...

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Hauptverfasser: LESLIE A. JARDINE, ANTONIO J. ALDYKIEWICZ JR, VIJAY GUPTA, NEAL S. BERKE, CHARLES R. CORNMAN, DURGA V. SUBRAMANIAN, URSZULA B. LATOSIEWICZ, FELEK JACHIMOWICZ
Format: Patent
Sprache:eng ; spa
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Zusammenfassung:Methods and compositions involving the use of nitrogen-containing coordinated metal compounds for stabilizing chromium Vl reducing metal cations. Exemplary uses include processes for making cement, and exemplary compositions include cement additives, concrete admixtures, as well as hydratable cement and cementitous compositions. Se describen métodos y composiciones que implican el uso de compuestos metálicos coordinados que contienen nitrógeno para estabilizar cationes metálicos reductores de cromo VI. Los usos ejemplares incluyen procesos para fabricar cemento, y las composiciones ejemplares incluyen aditivos de cemento, mezclas de concreto, así como cemento hidratable y composiciones cementosas.