Removal of selenium from urethane solutions

Details Removal of selenium from urethane solutions Removal of selenium from urethane solutions

C - Chemistry, Metallurgy

01

B

23/328

C01B 19/00 (2006.01) C07C 125/06 (1980.01)

Patent

CA 1110827

ABSTRACT OF THE DISCLOSURE A method for the removal and recovery of selenium from a urethane solution containing selenium compounds, which may be in the form of inorganic selenium and/or organoselenium compounds, which comprises contacting the selenium-containing urethane solution at a suitable tem- perature with an aqueous hydrogen peroxide solution and recovering the selenium from the resulting selenium com- pound enriched aqueous phase in a form suitable for reuse in the preparation of urethanes, the deselenized urethane remaining in the hydrocarbon and/or organic phase.

363272

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