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:
Dec. 25, 2007
Filed:
Jan. 06, 2006
Peter Cramers, Liestal, CH;
Gerhard Kettenbach, Grenzach-Wyhlen, DE;
Andreas Sellmann, Ratingen, DE;
Volker Zellmer, Bottrop, DE;
Peter Cramers, Liestal, CH;
Gerhard Kettenbach, Grenzach-Wyhlen, DE;
Andreas Sellmann, Ratingen, DE;
Volker Zellmer, Bottrop, DE;
Goldschmidt GmbH, , DE;
Abstract
The invention relates to a process for simultaneously performing two chemically successive reactions in a loop reactor, specifically reaction I) an optionally catalyzed equilibrium reaction between high-boiling liquid reactants, in which essentially one high boiler is formed as an intermediate and at least one low boiler as a by-product, and reaction II) a substantially diffusion-controlled reaction in which the liquid intermediate is reacted with at least one gaseous reactant to give the end product, wherein reactions (I) and (II), optionally after a start phase, are allowed to proceed simultaneously in the same apparatus, specifically loop reactor, and the loop reactor has a connectable gas-liquid circulation system coupled via an ejector mixing nozzle, in which circulated liquid phase is mixed in the ejector mixing nozzle with newly supplied gaseous reactant of reaction (II) () and/or gaseous reactant of reaction (II) aspirated by means of the ejector from the reactor via a connectable condenser (), and fed to the reactor by a liquid jet ejector () for the reaction, the low-boiling by-product(s) of reaction (I) and also any low-boiling solvent being condensed and discharged in the condenser continuously over the duration of the process. In particular, the invention relates to a process for etherifying high-boiling polyether alcohols.