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.

Date of Patent:
May. 26, 2020

Filed:

Dec. 01, 2017
Applicant:

Südzucker Ag, Mannheim, DE;

Inventors:

Markwart Kunz, Braunschweig, DE;

Alireza Haji Begli, Ramsen, DE;

Christine Kröner, Kindenheim, DE;

Wolfgang Wach, Worms, DE;

Alain-Michel Graf, Worms, DE;

Wolfgang Kraus, Nussloch, DE;

Assignee:

SUDZUCKER AG, Mannheim, DE;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/50 (2006.01);
U.S. Cl.
CPC ...
C07D 307/50 (2013.01);
Abstract

The invention relates to a method for producing 5-hydroxymethylfurfural (HMF) in a continuous process, which leads to the obtainment of an HMF fraction, a carbohydrate/acid fraction, a fructose fraction, and a levulinic-acid and formic-acid fraction and advantageously makes it possible, because of the purity of the obtained fractions, to return the fructose fraction obtained by means of the method directly to the production process and to use the other fractions in further-processing processes without the need for complex, additional purification steps.


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