Surface-active fatty acid ester derivatives and/or fatty...

Details Surface-active fatty acid ester derivatives and/or fatty... Surface-active fatty acid ester derivatives and/or fatty...

B - Operations, Transporting

03

D

361/4

B03D 1/02 (2006.01) B03D 1/012 (2006.01)

Patent

CA 2001736

Abstract Surface-active fatty acid ester derivatives and/or fatty acid derivatives, which are obtained by reacting epoxidized fatty acid esters with 1 to 3 moles of sulfur trioxide per mole of epoxide oxygen at 20 to 100°C, reacting the reaction product (A) with nucleo- philic reagents and, if desired, saponifying the ester bond, are used as collecting agents in the flotation of non-sulfide ores.

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