| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 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 | WO2008006946A1 Process for the treatment of a filtrate with oxygen and use of oxygen for reducing harmful components in a filtrate |
| 01/17/2008 | US20080011440 Device And Method For Cleaning Of A Filter Net Of A Pulp Dryer's Fan Tower, A Pulp Dryer's Fan Tower And A Pulp Dryer |
| 01/17/2008 | US20080010853 Process for Producing Dried Singulated Fibers Using Steam and Heated Air |
| 01/16/2008 | EP1878827A2 Implementation of dissolved solids profiling |
| 01/16/2008 | EP1877619A1 Method of recycling fibers from sewage sludge and means thereof |
| 01/16/2008 | EP1877192A2 Fibrous materials and composites |
| 01/16/2008 | CN101105011A Oxygen delignification and bleaching integration paste preparing method and device for realizing the same method |
| 01/16/2008 | CN100362161C Flotation deinking device for waste peper |
| 01/15/2008 | CA2310038C Bleaching of chemical pulp and treatment with a chelating agent |
| 01/15/2008 | CA2307838C A process for improving the drainage of cellulosic pulps |
| 01/10/2008 | WO2007087408A3 Method and arrangement for feeding chemicals into a process stream |
| 01/09/2008 | EP1874993A1 Methods for reducing chlorine dioxide associated corrosion |
| 01/09/2008 | EP0826086B2 Method for heating and pressuring a fibre pulp suspension during transportation to a bleaching reactor |
| 01/09/2008 | CN101103046A Improved biocomposite material |
| 01/09/2008 | CN101100829A Elaborate brown paper and producing method thereof |
| 01/09/2008 | CN101100824A Low-pressure slaking reaction warehouse |
| 01/09/2008 | CN101100823A Double helix static reaction warehouse |
| 01/09/2008 | CN101100822A Method for deinking and decoloring office waste paper by using ion liquid |
| 01/03/2008 | WO2008002764A2 Covalent bonding of carboxylated cellulose fiber webs |
| 01/03/2008 | US20080001011 Pulp flaker |
| 01/03/2008 | US20080000603 Covalent Bonding of Carboxylated Cellulose Fiber Webs |
| 01/03/2008 | US20080000600 Method and Device for Dilution of Cellulose Pulp |
| 01/02/2008 | EP1873303A2 Dissolved solids control in pulp production |
| 01/02/2008 | CN100359095C Sealing device |
| 01/01/2008 | US7314538 Energy efficiency; compaction of wood chips using plug screw |
| 12/27/2007 | WO2007147428A1 Copolymer, modified polymer carbohydrate material, modified bulk polymer, composite material, and methods of preparation |
| 12/27/2007 | US20070295462 Method For Treating Pulp In Connection With The Bleachine Of Chemical Pulp |
| 12/26/2007 | CN101092806A Paper with low whiteness and without any chlorine for cigarette paper and fabricating method |
| 12/26/2007 | CN101092805A Mitigation technique in use for producing bleached chemical pulp by using raw material of grass |
| 12/26/2007 | CN101092804A Light type paper with low whiteness and without any chlorine for textbook and fabricating method |
| 12/26/2007 | CN101092800A Installation for displacement washing and concentrating paper making pulp |
| 12/26/2007 | CN100357516C Bleached polyacrylic acid crosslinked cellulosic fibers |
| 12/25/2007 | US7311842 dissociating cations from their counterions by acidification, then pelletization of lignocellulose, adsorbing the cations and incubating the lignocellulose with alkaline fixing agent that catalyzes the exchange of hydrogens of the hydroxyl groups to lignocellulose adsorbing medium having positive charges |
| 12/21/2007 | WO2007144824A2 Pulp reactivity enhancement |
| 12/21/2007 | WO2007143877A1 A method of preparing bleached pulp with high yield by free radical cleanness kraft process |
| 12/21/2007 | WO2007143840A1 Processes and apparatuses for treating and/or increasing dryness of a substance |
| 12/21/2007 | CA2655035A1 Pulp reactivity enhancement |
| 12/21/2007 | CA2654698A1 A method of preparing bleached pulp with high yield by free radical clean pulping process |
| 12/19/2007 | EP1866477A1 Improved composition and processes for paper production |
| 12/19/2007 | CN101089291A Prepared bleach chemical pulp using grass kind plant as raw material and preparation method thereof |
| 12/19/2007 | CN101089289A Poplar ASGW pulp new process |
| 12/19/2007 | CA2591851A1 Procedure and apparatus for the concentration of hydrophobic materials |
| 12/13/2007 | WO2007140839A2 Method for producing fibrous material made of wood |
| 12/13/2007 | WO2007140838A2 Lignocellulosic fibrous material made of wood |
| 12/13/2007 | WO2007140837A2 Method for producing fibrous material |
| 12/13/2007 | CA2654191A1 Pulp and paper having increased brightness |
| 12/13/2007 | CA2634380A1 Process for producing fibrous material from wood |
| 12/13/2007 | CA2634378A1 Method for producing fibrous material |
| 12/13/2007 | CA2634202A1 Wood-based lignocellulosic fibrous material |
| 12/12/2007 | CN101086146A Double-screen filter-pressing wash hollander |
| 12/12/2007 | CN101086145A Floatation and ink removing machine |
| 12/11/2007 | US7307108 Compositions and composites of cellulosic and lignocellulosic materials and resins, and methods of making the same |
| 12/11/2007 | US7306846 Flowable and meterable densified fiber particle |
| 12/06/2007 | DE19983882B4 Fasermaterial mit hohem spezifischen Volumen, hoher Festigkeit und permanenter Fasermorphologie Fiber material with a high volume, high strength and permanent fiber morphology |
| 12/06/2007 | DE102006008763B3 Reaction tower for bleaching of fiber materials, comprises cylindrical reaction container, dilution container, and a cylindrical homogenizing container, which has an inlet and outlet for the product to be bleached |
| 12/05/2007 | EP1862587A2 Chemical activation and refining of southern pine kraft fibers |
| 12/05/2007 | CN200985469Y Plant fabric photoelectric oxygen comprehensive generator |
| 12/05/2007 | CN200985468Y Scraper device for high-speed washing pulp machine |
| 12/05/2007 | CN101082189A Method for extruding black liquor from high-hardness plasm obtained by boiling grass plant raw material |
| 12/05/2007 | CN101082188A Scouring process for grass pulping course |
| 12/05/2007 | CN101082187A Oxygen delignify treating method for grass group unbleached chemical pulp |
| 12/05/2007 | CN100352902C Metal ligand containing bleaching composition |
| 12/04/2007 | CA2356651C Absorbent structures of chemically treated cellulose fibers |
| 12/04/2007 | CA2338363C Method for precipitating hemicellulose onto fibres for improved yield and beatability |
| 11/29/2007 | WO2007134974A1 Method for improving the quality of a fibrous pulp |
| 11/29/2007 | WO2007077459A3 Moss-derived antimicrobial composition |
| 11/29/2007 | US20070272379 Support band |
| 11/29/2007 | US20070272378 Method for Reducing the Extractives Content of High-Yield Pulps and Method for Producing Bleached High-Yield Pulps |
| 11/29/2007 | US20070272377 Fully Closed, Zero Discharge, Clean Oxidizing Pulping Technology and Process |
| 11/29/2007 | DE102006024404A1 Verfahren zur Verbesserung der Qualität einer Faser-Suspension A method for improving the quality of a fiber suspension |
| 11/29/2007 | CA2651483A1 Methods for carbonate pretreatment and pulping of cellulosic material |
| 11/28/2007 | EP1737951A4 Method and dna constructs for increasing the production level of carbohydrate degrading enzymes in filamentous fungi |
| 11/28/2007 | CN101078186A Corn straw processing system and method |
| 11/28/2007 | CN100351460C Deinking device |
| 11/27/2007 | US7300546 A pulped wood-derived cellulose fiber that has been treated with a water soluble copper salt and optionally didecyldimethylammonium chloride or didecyldimethylammonium bromide to obtain a copper content of 0.01-0.25% by weight; the treated fiber is resistant to fiber length degradation during refining. |
| 11/27/2007 | US7300542 Effective amount of selected phosphonates or phosphonate blends is admixed with black liquor composition recovered from digester in chemical pulping process; suited for Kraft pulping process |
| 11/22/2007 | WO2007132836A1 Process for producing bleached pulp |
| 11/22/2007 | CA2652325A1 Process for producing bleached pulp |
| 11/21/2007 | CN200978369Y Grit catcher barrel for making paper |
| 11/21/2007 | CN200978368Y Grit catcher cone for making paper |
| 11/21/2007 | CN101076632A Dual zone wireless pulp washer |
| 11/20/2007 | US7297230 Treating a pulped wood-derived cellulose fiber with a water soluble copper salt and optionally didecyldimethylammonium chloride or didecyldimethylammonium bromide to obtain a copper content of 0.01-0.25% by weight; the treated fiber is resistant to fiber length degradation during refining. |
| 11/20/2007 | US7297225 Process for high temperature peroxide bleaching of pulp with cool discharge |
| 11/20/2007 | US7297224 Using of cellulase (endoglucanase) effecting a pulp-swelling activity (hydration) in a lower dosage then up to now and which does not lower the paper strength; determination of dosage to minimize the cellulase addition level and lessen the amount of the deinking agent needed; measuring water retention |
| 11/20/2007 | CA2231048C Oxygen delignification of lignocellulosic pulp in two steps |
| 11/15/2007 | WO2007128077A1 Improved paper dyeing process |
| 11/15/2007 | WO2007128026A1 Method for producing a type of pulp |
| 11/15/2007 | DE102006012835B3 Verfahren zur Behandlung von störende Gefäßzellen enthaltendem Zellstoff A method for the treatment of unwanted vascular cells containing pulp |
| 11/15/2007 | CA2651025A1 Process for producing a pulp |
| 11/13/2007 | US7294233 Comprises first submerging pressure sensitive adhesive into whitewater, water, and/or pulp slurry |
| 11/13/2007 | US7294227 Method and system for the treatment of pulp prior to ozone bleaching |
| 11/13/2007 | CA2316362C Method for separating wax from waste paper |
| 11/08/2007 | WO2007042192A3 Bleaching of substrates |
| 11/08/2007 | US20070256804 Light-coloured to white wooden material panels |
| 11/07/2007 | CN101067289A Method for papermaking utilizing waste paper containing wax |
| 11/07/2007 | CN101067287A Producing technology for microcrystalline cellulose with waste acid cotton linter |
| 11/07/2007 | CN101067285A Wood pomace modified producing technology |
| 11/07/2007 | CN100347154C Sulphinic acid derivatives, method for producing them, and their use |