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:
Jun. 30, 2015
Filed:
Oct. 20, 2009
Heikki Heikkila, Espoo, FI;
Jari Lewandowski, Siuntio, FI;
Mirja Lindroos, Kirkkonummi, FI;
Pia Saari, Espoo, FI;
Heikki Heikkila, Espoo, FI;
Jari Lewandowski, Siuntio, FI;
Mirja Lindroos, Kirkkonummi, FI;
Pia Saari, Espoo, FI;
Dupont Nutrition Biosciences APS, Copenhagen, DK;
Abstract
The present invention relates to a process for the production of xylose and dissolving pulp from xylan-containing biomass, such as hardwood. The invention is based on prehydrolysis of the xylan-containing biomass with SOin specified conditions, followed by chromatographic fractionation, nanofiltration or precipitation crystallization of the xylose-containing prehydrolyzate to obtain a xylose product having a xylose content of at least 55% on DS. The dissolving pulp obtained from the process can be used for example for the production of viscose.