The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 1979
Filed:
Jun. 14, 1977
Anthony M Hildon, Tattenhall, GB;
Peter F Greenhalgh, Widnes, GB;
Interox Chemicals Limited, London, GB;
Abstract
The invention provides a continuous process for the production of a peracid in an organic solvent comprising the steps of: (a) providing an aqueous phase comprising sulphuric acid, hydrogen peroxide and water; (b) providing an organic phase comprising an organic solvent and carboxylic acid; and (c) contacting said aqueous and organic phases countercurrently to produce an aqueous solution comprising sulphuric acid and water and an organic product solution comprising organic solvent and a peracid corresponding to said carboxylic acid. Desirably the process includes the added step of: (d) utilizing at least a portion of said aqueous solution to provide at least a portion of the aqueous phase of step (a). The invention also provides a continuous process for the epoxidation of an alkene comprising steps (a) through (d) with the added steps of: (e) reacting at least a portion of the peracid of said organic solution and an alkene to produce a product mixture comprising oxirane, carboxylic acid and organic solvent; (f) effecting distillation of said product mixture to produce a product phase comprising the oxirane and a recycle phase comprising carboxylic acid and organic solvent; and (g) utilizing at least a portion of said recycle phase to form at least a portion of the organic phase of step (b).