Process for separating primary and secondary amines
AssigneeChemical Research & Licensing Company
InventorLawrence A. Smith, Jr.
Life of this patent
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Abstract
A method for separating primary and secondary amines by contacting a mixture thereof with mesityl oxide, which forms acetone and an adduct with the primary amine. Acetone is removed to force the reaction. The reaction is particulary useful for separating close boiling amines. The primary amine adducts have high boiling points, thereby allowing the secondary amine to be recovered in high purity by distillation. The primary amine may also be recovered by hydrolyzing the adduct which produces the primary amine and acetone.
Claims9
A method for separating primary and secondary amines comprising contacting a mixture of primary and secondary amines with mesityl oxide, reacting said primary amine and mesityl oxide to produce a high boiling adduct thereof and acetone, removing acetone from said reaction, and separating said secondary amine from said high boiling adduct.
Dependencies are inferred from the claim text.