Sixta
Herbert Sixta, Lenzing AT
Patent application number | Description | Published |
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20090312536 | Process For Producing A Pulp - The invention relates to a process for producing a dissolving pulp from a cellulosic starting material using the kraft process, comprising the step of cooking the starting material with a cooking liquor. The process according to the invention characterized in that the starting material is exposed to a steam treatment prior to cooking and that the pulp obtained by cooking is subjected to cold caustic extraction (CCE) in the course of further processing. | 12-17-2009 |
20100021975 | Process For Producing Xylo-Oligosaccharides - The invention relates to a process for producing xylo-oligosaccharides, comprising the steps of cold caustic extraction (CCE) of a pulp obtained by a cooking process; purifying at least a portion of the press liquor forming in the cold caustic extraction stage using a membrane separation process, preferably nano- or ultrafiltration; obtaining the xylans from at least a portion of the retentate of the membrane separation process; processing at least a portion of the xylans obtained into xylo-oligosaccharides. | 01-28-2010 |
20110263895 | RECOVERY OF ACETIC ACID FROM WOOD EXTRACTS - In a process for recovering acetic acid from a wood extract, an aqueous wood extract is provided that contains acetic acid and dissolved hemicellulose containing uronic acid. A water insoluble solvent containing an extractant for the acetic acid is also provided. In a preferred embodiment, the solvent is undecane and the extractant is trioctylphosphine oxide. The wood extract is contacted with the solvent and extractant in order to extract the acetic acid from the wood extract. The acetic acid is then recovered from the solvent and extractant. | 10-27-2011 |
20130296545 | PROCESS FOR PRODUCING A PULP - The invention relates to a process for producing a dissolving pulp from a cellulosic starting material using the kraft process, comprising the step of cooking the starting material with a cooking liquor. The process according to the invention characterized in that the starting material is exposed to a steam treatment prior to cooking and that the pulp obtained by cooking is subjected to cold caustic extraction (CCE) in the course of further processing. | 11-07-2013 |
Herbert Sixta, Aalto FI
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20150107790 | METHOD OF SEPARATION OF HEMICELLULOSE AND CELLULOSE FROM POLYSACCHARIDE SOURCES - A method of separating hemicellulose and cellulose by dissolution of hemicellulose from a hemicellulose-rich source, such as a pulp of any origin or from holocellulose. In the method, hemicellulose is dissolved in a solvent system comprising a cellulose solvent, which is either a ionic liquid or another direct cellulose solvent, and a molecular solvent (co-solvent), wherein said co-solvent does not dissolve cellulose, and wherein the solvent basicity and acidity of said ionic liquid or other direct cellulose solvent are adequately adjusted by the co-solvent. The present invention enables quantitative separation of cellulose and hemicellulose without any depolymerization and yield losses as occurring during conventional dissolving pulp manufacturing processes. | 04-23-2015 |
Herbert Sixta, Helsinki FI
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20160053407 | Process for the production of shaped cellulose articles - A method of manufacturing a cellulose-based shaped article. The method comprises subjecting a solution of lignocellulosic material, dissolved in a distillable ionic liquid, to a spinning method, wherein the ionic liquid is a diazabicyclononene (DBN)-based ionic liquid. DBN-based ionic liquids have good dissolution power, high thermal and chemical stability, lack runaway reactions and exhibit low energy consumption, due to low spinning temperatures. The shaped cellulose articles can be used as textile fibres, high-end non-woven fibres, technical fibres, films for packaging, and barriers films in batteries, as membranes and as carbon-fibre precursors. | 02-25-2016 |
Tomás Sixta, Praha 10 - Vrsovice CZ
Patent application number | Description | Published |
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20150363589 | GESTURE RECOGNITION FOR DEVICE UNLOCKING - Systems and methods provide a security function for a device or applications running on a device. A lock tap sequence is entered by a user when the device is to be locked. When the user desires to unlock the device, the user enters a unlock tap sequence. If the lock tap sequence matches the unlock tap sequence, the device is unlocked. | 12-17-2015 |