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:
Nov. 05, 2002
Filed:
Apr. 18, 2000
Jean-Christophe Choque, Lille, FR;
Guy Fleche, Hazebrouck, FR;
Roquette Freres, Lestrem, FR;
Abstract
The invention relates to a method of preparing a mixture of mannitol and sorbitol, charactertized by the fact that continuous hydrogenation of glucosone with a solid matter content equal to at least 30%, preferably between 30 and 50%, is carried out in a succession of fixed catalyst beds disposed in series, which includes a first hydrogenation zone, made up of at least one fixed catalyst bed where hydrogenation is carried out at a temperature equal at the most to 80° C., preferably between 50 and 80° C., and a second hydrogenation zone, made up of at least one fixed catalyst bed where hydrogenation is carried out at a temperature equal to at least 80° C., preferably between 100 to 150° C.