Method for recovering or recirculating stable nitroxide radicals

Andre Heeres (Inventor), Hendrik Arend Van Doren (Inventor), Ido Pieter Bleeker (Inventor), Kornelis Fester. Gotlieb (Inventor)

Research output: PatentAcademic

Abstract

The invention relates for a method for recovering stable nitroxide radicals, wherein at least a part of a reaction mixt. consisting of a soln. or suspension, or a filtrate or supernatant of a suspension, in which stable nitroxide radicals are present in non-solid form, is subjected to an azeotropic distn. The invention further relates to a method for the selective oxidn. of compds. which contain at least one hydroxyl group, using stable nitroxide radicals as catalyst, wherein the liq. phase of the mixt. contg. the reaction products is subjected to an azeotropic distn., where after the nitroxide radical-contg. distillate is recirculated to the reaction vessel. [on SciFinder(R)]
Original languageEnglish
Patent numberWO9636621A1
Publication statusPublished - 21 Nov 1996

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Keywords

  • TEMPO radical stable recovering oxidn starch
  • azeotropic distn recovering stable radical TEMPO
  • catalyst TEMPO radical oxidn starch
  • polyglucuronic acid

Cite this

Heeres, A., Van Doren, H. A., Bleeker, I. P., & Gotlieb, K. F. (1996). Method for recovering or recirculating stable nitroxide radicals. (Patent No. WO9636621A1). Cooperatieve Verkoop- en Productievereniging van Aardappelmeel en Derivaten "Avebe" G. A.