| Patents for D21C 3 - Pulping cellulose-containing materials (5,020) |
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| 09/04/2008 | US20080214796 Method |
| 09/04/2008 | US20080210393 Mediator-Enzyme System for Controlling Pitch Deposits in Pulp and Paper Production |
| 09/04/2008 | US20080210392 method for producing cellulose pulp in a continuous digester in an energy-efficient manner |
| 09/04/2008 | US20080210391 Liquid calcium hydroxide as milk of lime is added during or before the pulping is carried out to form the pulp, introducing gaseous carbon dioxide into the pulp suspension thus treated, a chemical reaction is triggered, in which the finely divided calcium carbonate is precipitated |
| 09/03/2008 | CN100415889C 阿拉伯木聚糖降解酶 Arabinoxylan degrading enzyme |
| 09/03/2008 | CN100415882C Method for regulating lignin in populus tomentosa |
| 08/28/2008 | WO2008103124A1 Vapour phase digester and a method for continuous cooking |
| 08/28/2008 | US20080202712 Method and Device for the Continuous Cooking of Pulp |
| 08/28/2008 | DE102007008955A1 Producing fibrous material from lignocellulosic material comprises preparing a chemical solution with less percentage of sulfite, mixing the solution with wood, heating, removing the solution, pulping and separating the woods and solution |
| 08/27/2008 | CN101250831A Method for producing cattle manure paper-pulp using cattle manure as raw material |
| 08/26/2008 | CA2369086C Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics |
| 08/26/2008 | CA2279283C Method and device for the continuous cooking of pulp |
| 08/21/2008 | US20080196847 Pre-extraction and solvent pulping of lignocellulosic material |
| 08/20/2008 | EP1957708A1 Method and device for the continuous cooking of pulp |
| 08/19/2008 | US7413882 Methods for degrading or converting plant cell wall polysaccharides |
| 08/14/2008 | WO2008098032A2 Use of lignocellulosics solvated in ionic liquids for production of biofuels |
| 08/14/2008 | WO2008095252A1 Fractionation of a lignocellulosic material |
| 08/14/2008 | US20080190573 Delignifying and/or bleaching of a pulp by reacting pulp, chlorine dioxide and a peroxidase; papermaking; treating wastewater and/or sludge by reacting wastewater and/or sludge, chlorine dioxide and a peroxidase; haloperoxidase; laccase; chlorine regenerated from chlorite by-product; efficiency |
| 08/14/2008 | CA2677862A1 Fractionation of a lignocellulosic material |
| 08/08/2008 | CA2578305A1 Process for recovery of oligosaccharides and polysaccharides during pulping |
| 08/07/2008 | US20080185113 Mixture of dialkylamide and nonionic surfactants in aqueous solution; reducing pitch during papermaking |
| 08/06/2008 | CN101235607A Method for producing natural antibacterial bamboo fiber |
| 08/06/2008 | CN101235095A Method for completely dissolving lignocellulose biomass, device and application thereof |
| 07/30/2008 | CN100406646C Prepared high hardness pulp using grass kind plant as raw material and preparation method thereof |
| 07/23/2008 | EP1945823A1 Improvements in a process for rapid acid hydrolysis of lignocellulosic material and in a hydrolysis reactor |
| 07/23/2008 | CN101225620A Method for preparing high-whiteness chemical pulp and paper products thereof by using corn stalk |
| 07/23/2008 | CN101225614A Paper-making technique employing bio-fermentation pulping method instead of chemical pulping technique |
| 07/23/2008 | CN100404754C Reed pulp preparation method using biological oxidation method |
| 07/23/2008 | CN100404753C Oxidation method prepared whole-cotton stalk newspaper pulp and its preparation method |
| 07/22/2008 | US7402224 The addition of acetic acid to formic acid makes it possible to increase considerably the power of the liquid organic phase to dissolve hemicelluloses and lignins without affecting the capacity of formic acid for the acid hydrolysis of these biopolymers |
| 07/22/2008 | CA2393858C Raw material for printing paper, method to produce it and printing paper |
| 07/17/2008 | US20080171374 Recombinant Clan C hydrolase for use in cleaning agents, textile treatment and enhancement of animal feeds; directed protein evolution |
| 07/16/2008 | CN101223314A Product and processes from an integrated forest biorefinery |
| 07/16/2008 | CN101223288A Improvements in a process for rapid acid hydrolysis of lignocellulosic material and in a hydrolysis reactor |
| 07/16/2008 | CN101220569A Pulping bleaching assistant and cold soaking pulping process |
| 07/16/2008 | CN101220565A Pulping method with zero discharge of sewage water |
| 07/16/2008 | CN100402746C Pulp using rice grass and wheatgrass as raw material and preparation method thereof |
| 07/16/2008 | CN100402745C Prepared bleach chemical pulp using grass kind plant as raw material and preparation method thereof |
| 07/16/2008 | CN100402743C Method for extruding black liquor from high-hardness plasm obtained by boiling grass plant raw material |
| 07/16/2008 | CN100402741C Alkaline pulp having low average degree of polymerization values and method of producing same |
| 07/15/2008 | CA2273591C Partial autocausticization of alkali liquors for wood pulping processes |
| 07/10/2008 | US20080167269 Hydrolysis resistant organomodified silylated ionic surfactants |
| 07/09/2008 | CN101215801A Method for preparing high permeating degree fruit cultivating bag paper and products thereof |
| 07/09/2008 | CN101215795A Sulfuric acid catalysis ethanol pulp preparing technique for ryegrass |
| 07/09/2008 | CN101215794A Zero residual base normal-pressure or low-pressure boiling high-concentration pulp preparing method by using base process |
| 07/09/2008 | CN100400743C Quick cold soaking and mechanical pulping process for grass family |
| 07/08/2008 | US7396434 Catalytic reactor process for the production of commercial grade pulp, native lignin and unicellular protein |
| 07/08/2008 | CA2378927C Preparation of chemical pulp and xylose, utilizing a direct acid hydrolysis on the pulp |
| 07/08/2008 | CA2318027C Treating pulp with yield or strength-enhancing additive |
| 07/08/2008 | CA2273470C Increasing causticizing efficiency of alkaline pulping liquor by borate addition |
| 07/03/2008 | WO2008077450A1 Method for the production of tissue paper |
| 07/03/2008 | WO2008058003A3 Method and composition for improving fiber quality and process efficiency in mechanical pulping |
| 07/03/2008 | CA2673175A1 Process for producing tissue paper |
| 07/02/2008 | EP1937892A2 Method for treating lignocellulosic materials |
| 07/02/2008 | EP1084291B1 Process for producing pulp with a mixture of formic acid and acetic acid as cooking chemical |
| 07/02/2008 | CN101210394A Technique for producing pure biological paper pulp |
| 07/02/2008 | CN100398745C Chemical and machinery pulping process using complete white mulberry branch as raw material |
| 06/26/2008 | WO2008076055A1 Process of pulping |
| 06/26/2008 | WO2008074220A1 A preparation method of a bamboo pulp |
| 06/26/2008 | DE102006061480A1 Producing fibrous material comprises producing a chemical solution, mixing the chemical solution with wood and/or annual plant; heating the chemical solution and pulping and then separating the woods and the chemical solution |
| 06/19/2008 | WO2008073397A1 Hydrolysis resistant organomodified silylated ionic surfactants |
| 06/19/2008 | WO2008073396A1 Hydrolysis resistant organomodified silylated ionic surfactants |
| 06/19/2008 | US20080142176 Hemicellulose is extracted from the lignocellulosic, adsorbing hemicellulose on the pulp, and then subjecting the pulp to a delignification process to remove lignin from the pulp; wood pulp |
| 06/19/2008 | CA2823305A1 Methods of processing biomass comprising electron-beam radiation |
| 06/18/2008 | EP1932967A2 A method for producing cellulose pulp in a continuous digester in an energy-efficient manner |
| 06/18/2008 | CN101200862A Clean pulping process |
| 06/18/2008 | CN100395403C Oxygen delignify treating method for grass group unbleached chemical pulp |
| 06/12/2008 | US20080135194 Treating a fluid suspension of particles with a cyclodextrin compound to increase particle content of the cake and the dewatering rate of the flocs; reducing wet solids such as sludge which require disposal and increasing the efficiency of the dewatering process such as in pulping and papermaking |
| 06/11/2008 | CN101198745A A process for organosolv pulping and use of a gamma lactone in a solvent for organosolv pulping |
| 06/11/2008 | CN101198744A Manufacturing method of mechanical pulp from cornstalk |
| 06/11/2008 | CN101195971A Technique for regenerating non discharge sewage of paper making industry |
| 06/10/2008 | US7384504 Light-stable and process-stable lignocellulosic materials and their production |
| 06/04/2008 | CN100392179C Fibers from plant seeds and use |
| 06/04/2008 | CN100392177C Process of immersing rolling for pulping and special eqiupment thereof |
| 06/03/2008 | US7381302 Method and arrangement for impregnating chips |
| 05/29/2008 | WO2008063127A1 A method to use heat energy from black liquor |
| 05/29/2008 | US20080121359 Methods and Systems for Pretreatment and Processing of Biomass |
| 05/29/2008 | CA2670274A1 A method to use heat energy from black liquor |
| 05/28/2008 | CN101187181A Alkaline method for zero-residual alkaline boiling pulp making method |
| 05/28/2008 | CN100390353C Environment protection pulping and papermaking method |
| 05/21/2008 | CN101184889A Production of pulp using a gaseous organic agent as heating and reaction-accelerating media |
| 05/20/2008 | US7374637 reducing the liquor quantities; the number of filtrate tanks between the process steps is minimised |
| 05/15/2008 | WO2008058003A2 Method and composition for improving fiber quality and process efficiency in mechanical pulping |
| 05/15/2008 | WO2008057040A1 Method for an energy efficient production of cellulose pulp in a continuous digester |
| 05/15/2008 | US20080110586 a portion of the caustic (NaOH) and borate are recovered from the hemicaustic effluent streams and recycled back into the extraction process; hemicellulose in hemicaustic streams is recovered and used as feedstock in higher value end uses; nanofiltration membrane filters the hemicaustic stream |
| 05/15/2008 | US20080110585 Enhanced fiber additive; and use |
| 05/15/2008 | CA2668158A1 Method and composition for improving fiber quality and process efficiency in mechanical pulping |
| 05/14/2008 | CN101177921A Continuous pulping method for cotton stalk natural color chemomechanical pulp |
| 05/14/2008 | CN100387774C Process for producing pulp |
| 05/08/2008 | US20080105392 Additives of nonionic surfactant, chelating agent, a hydrotrope and optionally a reductive modifier, oxidative modifier and pH controller; decreases freeness and amount of shives, provides energy and chemical savings, and enhances brightness and mechanical strength; discoloration inhibition; papermaking |
| 05/08/2008 | US20080105391 Upstream of preheating section of a mechanical refining system defibrating fiberizing wood chip feed in a low intensity disc refiner until > 30 percent of the fibers are axially separated with < 5 percent fibrillation; > 90% fiber obtained after defibrillated in a high intensity disc; efficiency |
| 04/30/2008 | CN101171387A Installation for implementing a method for producing paper pulp, lignins and sugars and production method using such an installation |
| 04/30/2008 | CN101171386A Chlorine dioxide treatment composition and method |
| 04/30/2008 | CN101168935A Technique for producing white paper from cotton straw |
| 04/30/2008 | CN101168934A Method for preparing applique paper |
| 04/30/2008 | CN101168929A Degumming and pulping method for broussonetia papyrifera phloem fiber |
| 04/29/2008 | US7364640 Prepulping; refining; filtration; dehydration; adjustment of pH; separation |
| 04/29/2008 | CA2448862C Method for separating hemicelluloses from a biomass containing hemicelluloses |
| 04/24/2008 | US20080093041 For cellulose pulps; improved impregnation obtained by addition of fluids with increasing temperatures at different heights, and by establishing counter-flow zone in uppermost part of vessel |
| 04/24/2008 | CA2818902A1 Modified kraft fibers |