US3493441 Патенты
3,493,441 Patented Feb. 3, 1970 application of the detoxification solution. This non-flowing 3,493,441 or static rinse water can then be used for replenishing the DETOXFICATION OF HEXAVALENT CHROMUM coating solutions. When the detoxification solution is con CONTAINING COATING ON A METAL SURFACE Sumed, it may then be discharged, preferably after neutral Werner Rausch, Stierstadt, Taunus, Hans Hansen, Bergen ization. , a corporation of New York proved to be a particularly advantageous solution to the No Drawing. Filed Aug. 25, 1967, Ser. No. 663,213 problem of toxic rinse waters from metal coati
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