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US 7,504,529 B2Granted
Method for hydrocyanation
AssigneeBASF SE
InventorsTim Jungkamp, Hans-Martin Polka, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel
Life of this patent
Estimating the term…
Abstract
A process is described for removing hydrogen cyanide from mixtures comprising pentenenitrile, wherein the removal is effected by an azeotropic distillation of hydrogen cyanide with 1,3-butadiene.
Claims11
A process for reducing the content of hydrogen cyanide in mixtures comprising pentenenitriles and hydrogen cyanide, the process comprising azeotropically distilling the mixtures to remove the hydrogen cyanide with 1,3-butadiene.
The use of 1,3-butadiene for azeotroppically distilling hydrogen cyanide.
Dependencies are inferred from the claim text.