Process for producing alkyl xanthogen alkylformates

Details Process for producing alkyl xanthogen alkylformates Process for producing alkyl xanthogen alkylformates

1981-06-04

1982-10-19

Ford, John M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C15402

Patent

active

043549802

ABSTRACT:
Dialkyl xanthogen formates are known collectors, but the reaction that produces them, between an alkaline alkyl xanthate and an alkaline chloroformate, also causes side reactions which produce varying amounts of xanthic anhydride, carbonyl sulfide and dialkyl carbonate as by-products, and yield of formate may be as low as 30%. There are here disclosed processing schemes for controlling the amount and type of products and by-products produced in the reaction, and flotation tests show that certain product mixtures are significantly improved collectors for sulfide ores.

REFERENCES:
patent: 2608573 (1952-08-01), Fischer
Noller, Textbook of Organic Chemistry, W. B. Saunders Co., Philadelphia, 1958, pp. 70, 128.
Reid, Organic Chemistry of Bivalent Sulfur, Chem. Publishing Co., Inc., New York, 1962, p. 134.

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