| Patents for D21C 3 - Pulping cellulose-containing materials (5,020) |
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| 04/23/2008 | EP1913198A1 Method to decompose the natural structure of biomass |
| 04/23/2008 | CN101165267A Pulping technique for straw fibre |
| 04/17/2008 | WO2008044860A1 Manufacturing method of bamboo chip for manufacturing the solubility pulp and thereof |
| 04/17/2008 | WO2008043837A1 Ionic liquids for solubilizing polymers |
| 04/17/2008 | US20080087394 Decreases the brightness reversion or yellowing of an elemental chlorine free bleached pulp; hexenuronic acid; chlorine dioxide; high and stable brightness levels |
| 04/17/2008 | US20080087390 Multi-step pulp bleaching |
| 04/16/2008 | CN101163832A Arrangement for feeding a slurry of chips and liquid |
| 04/16/2008 | CN100381638C Method of preparing paper product using cotton stalk chemical pulp |
| 04/16/2008 | CN100381636C Bleaching method of cotton stalk chemical pulp |
| 04/16/2008 | CN100381635C Method of preparing bleached chemical pulp using cotton stalk |
| 04/09/2008 | CN101160431A Method for separating the main components of lignocellulosic materials |
| 04/09/2008 | CN101158127A Broussonetia white bast biological pulping method |
| 04/09/2008 | CN101158126A Pulping method for plant fibre raw material combined with biology |
| 04/09/2008 | CN101158125A Paper-making grade softwood pulp plate modifying production technique |
| 04/09/2008 | CN101158124A Paper-making grade pulp bleaching plate modifying production technique |
| 04/09/2008 | CN101158123A High-strength bamboo pulp manufacturing technique |
| 04/09/2008 | CN101158122A Bamboo dissolved pulp manufacturing technique |
| 04/09/2008 | CN101158121A Process for manufacturing dissolved pulp by using ethanol, sulfate and acetic acid |
| 04/03/2008 | WO2007140837A3 Method for producing fibrous material |
| 04/02/2008 | CN100377972C Papery food packaging bag |
| 04/01/2008 | US7351306 Cooking of cellulose pulp in a cooking liquor containing pre-evaporated black liquor |
| 04/01/2008 | US7351305 Method and a digester for the continuous cooking of wood raw material to cellulose pulp |
| 03/27/2008 | WO2007140839A3 Method for producing fibrous material made of wood |
| 03/27/2008 | WO2007140838A3 Lignocellulosic fibrous material made of wood |
| 03/26/2008 | CN101148837A Paper-making-stage primary color wood pulp plate denaturalization producing technique |
| 03/26/2008 | CN101148836A Paper-making-stage bamboo wood pulp plate denaturalization producing technique |
| 03/26/2008 | CN101148835A Paper-making-stage wood pulp plate denaturalization producing technique |
| 03/26/2008 | CN101148834A Paper-making-stage broad-leaved wood pulp plate denaturalization producing technique |
| 03/26/2008 | CN101148833A Paper-making-stage reclaiming wood pulp plate denaturalization producing technique |
| 03/26/2008 | CN101148832A Paper-making-stage high viscosity wood pulp plate denaturalization producing technique |
| 03/19/2008 | CN101144252A Method for producing chemical pulp by steaming mixed vegetation |
| 03/18/2008 | CA2312403C System and process for the oxygen delignification of pulp consisting of lignocellulose-containing material |
| 03/12/2008 | EP1266072B1 Raw material for printing paper, method to produce it and printing paper |
| 03/12/2008 | CN101139804A Method for preparing environment-friendly paper pulp by utilizing biological enzyme and production technique thereof |
| 03/12/2008 | CN100374648C Catalytic pyrolyzing agent for pulping without steaming and boiling |
| 03/06/2008 | WO2008028183A1 Method of making medium density fiberboard |
| 03/06/2008 | WO2008025166A1 Process for producing ammonia and sulfuric acid from a stream comprising ammonium sulfate |
| 03/06/2008 | CA2661574A1 Process for producing ammonia and sulfuric acid from a stream comprising ammonium sulfate |
| 03/05/2008 | CN101135120A Process for manufacturing natural antibiotic bamboo pulp by dendrocalamus giganteus non-sulfate method |
| 03/05/2008 | CN101135119A Method for manufacturing pulp raw material by biofermentation and culture method for the bacterial |
| 03/05/2008 | CN100373001C Pulping technique for fibers in grass class |
| 02/27/2008 | EP1891263A1 A process for organosolv pulping and use of a gamma lactone in a solvent for organosolv pulping |
| 02/27/2008 | CN101130937A Hemp paper-pulp and preparing method thereof |
| 02/27/2008 | CN100371527C Process for making daily used paper by using salix mongolica as raw material |
| 02/26/2008 | CA2453246C Use of thinnings and other low specific gravity wood for lyocell products method |
| 02/19/2008 | CA2270524C Method of producing pulp using single-stage cooking with formic acid and washing with performic acid |
| 02/19/2008 | CA2181163C Cold caustic extraction of pulps for absorbent products |
| 02/13/2008 | EP1885864A1 Method of continuous processing of lignocellulosic feedstocks |
| 02/13/2008 | CN101122101A Processes and systems for the pulping of lignocellulosic materials |
| 02/13/2008 | CN100368628C Pulp making process employing straw to make environment-friendly paper film |
| 02/12/2008 | US7329528 Enzyme multimer and process of producing same |
| 02/10/2008 | CA2596796A1 Processes and systems for the pulping of lignocellulosic materials |
| 02/06/2008 | EP1883609A2 New product and processes from an integrated forest biorefinery |
| 02/06/2008 | CN101120137A Method for altering the tack of materials |
| 02/06/2008 | CN101120102A Acid hydrolysis process of cellulosic and lignocellulosic materials, digestion vessel and hydrolysis reactor |
| 02/06/2008 | CN101117779A Method of mechanical pulp making by using cotton pole |
| 01/31/2008 | US20080023162 Dissolution Method |
| 01/30/2008 | CN101113577A Process for producing paper stuff taking cassava root and broken papers as primary materials |
| 01/30/2008 | CN101113576A Method for manufacturing paper stuff with cassava root material |
| 01/30/2008 | CN101113575A Method for making paper pulp by adding cassava root pulp |
| 01/30/2008 | CN101113574A Method for making paper pulp by using cassava root shredded paper sawdust mixture as raw material |
| 01/29/2008 | CA2453241C Use of thinnings and other low specific gravity wood for lyocell pulps method |
| 01/29/2008 | CA2253301C Hydrogen sulphide pretreatment of lignocellulosic material in continuous pulping processes |
| 01/23/2008 | EP1880053A1 Chlorine dioxide treatment compositions and processes |
| 01/23/2008 | CN101109162A Cotton stalk bleach pulp with disinfection function and method of manufacturing the same |
| 01/22/2008 | US7320741 Method of xylanase treatment in a chlorine dioxide bleaching sequence |
| 01/22/2008 | CA2319431C Contaminant dispersants useful in recycling of treated containers |
| 01/22/2008 | CA2293318C Modified cellulosic fibers and fibrous webs containing these fibers |
| 01/17/2008 | WO2007092359A3 Diatom compositions and method for using such compositions for making paper products |
| 01/16/2008 | EP1878827A2 Implementation of dissolved solids profiling |
| 01/16/2008 | EP1877618A1 Installation for implementing a method for producing paper pulp, lignins and sugars and production method using such an installation |
| 01/16/2008 | CN101105011A Oxygen delignification and bleaching integration paste preparing method and device for realizing the same method |
| 01/09/2008 | EP1874997A1 Production of pulp using a gaseous organic agent as heating and reaction-accelerating media |
| 01/09/2008 | EP1874996A2 Extracting biopolymers from a biomass using ionic liquids |
| 01/09/2008 | EP1874995A1 Method for separating the main components of lignocellulosic materials |
| 01/09/2008 | CN101100825A Method for reducing black liquor bleed in closed screening |
| 01/09/2008 | CN101100820A Method for producing Chinese red pine chemical pulp |
| 01/09/2008 | CN101100819A Straw and grass activating agent pulping method |
| 01/09/2008 | CN101100818A Pulping technique for straw fibre |
| 01/08/2008 | CA2417791C Process for digesting woodchips and digester additives |
| 01/03/2008 | US20080001011 Pulp flaker |
| 01/02/2008 | EP1873303A2 Dissolved solids control in pulp production |
| 01/02/2008 | EP1873302A2 Method for processing high hemicellulose pulp in viscose manufacture and products therefrom |
| 01/02/2008 | EP1873301A2 Method for processing high hemicullulose pulp in viscose manufacture |
| 01/02/2008 | CN100359094C Method of deresinating pulp using alkyl alcohol alkoxylate surfactants |
| 01/02/2008 | CN100359093C Technology of making paper and paper products by banana fibre |
| 12/27/2007 | WO2007149836A2 Compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process |
| 12/27/2007 | US20070295463 Compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process |
| 12/27/2007 | CA2656015A1 Compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process |
| 12/26/2007 | EP1869250A1 Arrangement for feeding a slurry of chips and liquid |
| 12/26/2007 | CN101092806A Paper with low whiteness and without any chlorine for cigarette paper and fabricating method |
| 12/26/2007 | CN101092804A Light type paper with low whiteness and without any chlorine for textbook and fabricating method |
| 12/26/2007 | CN101092799A Method for making chemical paper pulp or chemical fiber pulp through cold process by using bamboo, wood etc. as raw material |
| 12/21/2007 | WO2006121634A3 New product and processes from an integrated forest biorefinery |
| 12/19/2007 | CN101089292A Pulp using rice grass and wheatgrass as raw material and preparation method thereof |
| 12/19/2007 | CN101089291A Prepared bleach chemical pulp using grass kind plant as raw material and preparation method thereof |
| 12/19/2007 | CN101089290A Prepared high hardness pulp using grass kind plant as raw material and preparation method thereof |
| 12/19/2007 | CN101089289A Poplar ASGW pulp new process |
| 12/18/2007 | US7309401 Top separator for gas phase and hydraulic phase continuous digesters and method for converting digester |
| 12/13/2007 | WO2007140839A2 Method for producing fibrous material made of wood |