1-ALKOXYALKYLIDENE-1,1-DIPHOSPHONIC ACIDS OR THEIR POTASSIUM, SODIUM OR AMMONIUM SALTS AS COLLECTORS FOR FLOTATION OF CASSITERITE AND PROCESS FOR PRODUCING THE SAME

摘要

1. 1 - алкоксиалкилиден - 1.1 - дифссфоновые acid of general formula Vo - cC i, po. h, where алкил,.hydrogen or methyl, or калиевые, sodium or um мониевые salt as of дл  flotation of cassiterite. 2.сп