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:
Mar. 27, 2018
Filed:
Sep. 23, 2015
Purac Biochem Bv, Gorinchem, NL;
Willem Jacob Groot, Dordrecht, NL;
Jan Van Breugel, Woudrichem, NL;
Purac Biochem BV, Gorinchem, NL;
Abstract
A process for the preparation of butanediol includes providing an aqueous medium comprising magnesium succinate by fermentation of a carbohydrate source, in the presence of a magnesium base. The aqueous medium is processed wherein the magnesium succinate is treated with a monovalent base, prior to or after a crystallization step, to provide a magnesium base and an aqueous solution comprising a monovalent succinate salt. The concentration of the monovalent succinate salt is adusted to between 10 and 35 wt. %. The aqueous solution is subjected to water-splitting electrodialysis, to produce a first solution comprising monovalent base and a second solution comprising succinic acid and monovalent succinate salt, the electrodialysis causing conversion the monovalent succinate salt into succinic acid of 40 to 95 mole % calculated on a total molar amount of succinic acid and succinate present in solution. The second solution is separated into succinic acid and the monovalent succinate salt by crystallization. The monovalent scuccinate salt solution of step e) is recycled to step d) and the succinic acid is hydrogenated to form butanediol.