| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 01/16/2002 | EP0754258B1 Method for complex treatment of pulp in conjunction with a chlorine dioxide stage |
| 01/16/2002 | EP0723614B1 A process for production of linerboard and corrugated medium |
| 01/15/2002 | CA2200486C Delignification and bleaching process for chemical paper pulp |
| 01/13/2002 | CA2352885A1 Process for loading fibers with calcium carbonate |
| 01/10/2002 | WO2002002868A1 Wash press having an oscillating spray arrangement |
| 01/10/2002 | WO2002002867A1 Groudinins' device for a concoction, processing and transportation of a fibre having a medium and a high concentration (12-90) |
| 01/09/2002 | CN1330741A Softened comminution pulp |
| 01/09/2002 | CN1077633C Method of paper-making of cold pulping and bleaching using plant preparation |
| 01/09/2002 | CN1077631C Cooling pulping paper-making method |
| 01/08/2002 | US6336994 Cooking cellulosic material, recovering filtrate, washing with acids, delignifying in presence of oxygen, bleaching with chlorine-free bleachear, recovering filtrate, regenerating bleacher |
| 01/08/2002 | CA2224594C Process for preparing reduced odor and improved brightness individualized, polycarboxylic acid crosslinked fibers |
| 01/03/2002 | WO2002000995A1 Method for preparing pulp from cornstalk |
| 01/02/2002 | EP1165881A1 Multi-component system for the enzyme-catalysed oxidation of substrates and method for carrying out enzyme-catalysed oxidation |
| 01/02/2002 | EP1165880A1 Method for manufacturing bleached mechanical and chemithermomechanical pulp |
| 01/02/2002 | EP1165879A1 Method and apparatus for treating pulp |
| 12/27/2001 | WO2001098579A2 Methods to control organic contaminants in fiber suspensions |
| 12/27/2001 | US20010054590 Fiber mat is formed on a screen cylinder of a pressurized fiber filtering device used to filter particles from a liquid stream; formed by injecting cellulosic fibers into the liquid stream flowing into the fiber filtering device. |
| 12/25/2001 | US6332951 Quantitative analysis of chemicals for bleaching cellulose |
| 12/20/2001 | WO2001096656A1 Bleaching of pulp |
| 12/20/2001 | WO2001057309A3 Method for bleaching de-inked and/or recycled pulps |
| 12/20/2001 | US20010052400 First oxygen delignification stage to which oxygen and alkali are added at a first alkali charge and pressure, and second oxygen delignification stage at lower pressure, lower alkalinity, and greater temperature than first stage |
| 12/19/2001 | EP1163328A1 An enzymatic treatment method |
| 12/19/2001 | EP0986671B1 Improved papermaking processes |
| 12/19/2001 | EP0985068B1 Device for dehydrating and washing suspensions of fibrous material |
| 12/19/2001 | EP0981665B1 Improved papermaking processes |
| 12/19/2001 | CN2466201Y Multi-stage high-concentrated pulp separator for papermaking pulping |
| 12/18/2001 | US6331354 Alkaline pulp having low average degree of polymerization values and method of producing the same |
| 12/18/2001 | US6331192 N-bis-((1,2-dicarboxylethoxy)ethyl)-amine; n-bis-((1,2-dicarb oxylethoxy)ethyl)-aspartic acid; n-tris-(1,2-dicarboxyl ethoxy)-ethyl)-amine; chlorine dioxide and peroxyacaetic acid |
| 12/14/2001 | CA2347418A1 Improved filtration of pulp mill liquids |
| 12/13/2001 | WO2001094692A2 Aldehyde donors for stabilizing peroxides in papermaking applications |
| 12/13/2001 | US20010050153 Bleaching slurry also contains chelate compound |
| 12/13/2001 | US20010050152 Oxygen delignification of pulp in two stages |
| 12/13/2001 | US20010050150 Proteins for use as pitch and stickies control agents in pulp and papermaking processes |
| 12/12/2001 | EP1161593A1 Oxygen delignification of pulp in the presence of carbonates as alkali |
| 12/12/2001 | EP1161592A1 Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
| 12/12/2001 | EP0907409B1 Method and apparatus for mixing a second medium with pulp |
| 12/05/2001 | EP1159387A1 Detergent compositions comprising photobleaching delivery systems |
| 12/05/2001 | EP1159354A1 A composition comprising a photo-oxidising agent and uses of the agent |
| 12/05/2001 | EP1109750A4 Process for the inhibition of scale in harsh systems and novel antiscalants for same |
| 12/05/2001 | EP0820544B1 Treatments for inhibiting deposition in papermaking systems |
| 12/05/2001 | CN1324882A Purified PH-neutral rhizoctonia laccase and nucleic acid for coding said laccase |
| 12/04/2001 | US6325891 Adjusting ph of pulp, treating with ozone to reduce kappa number, treating with chelating agent without any intervening washing step, adjusting ph by adding alkali, washing, bleaching with peroxide |
| 12/01/2001 | CA2349429A1 Improved method for bleaching pulp with oxidative enzymes |
| 11/29/2001 | WO2001090375A1 Endoglucanase nce5 and cellulase preparations containing the same |
| 11/29/2001 | US20010045393 Using urea sulfate, urea hydrochloride, triethanolamine hydrochloride, triethanolamine sulfate to adjust pH |
| 11/29/2001 | US20010045264 Process and a fluffer device for treatment of a fiber stock suspension |
| 11/29/2001 | DE10033805A1 Verfahren zur Behandlung einer Faserstoffsuspension und Fluffer zur Durchführung des Verfahrens A process for treating a fibrous suspension and for performing the method Fluffer |
| 11/28/2001 | EP1158088A2 Process and device for treating a fibrous suspension |
| 11/28/2001 | EP0840625B1 Absorbent material, absorbent body made of the material, and method for the preparation of the material |
| 11/28/2001 | CN1324419A Inhibition of pulp and paper yellowing using hydroxylamines and other coadditives |
| 11/27/2001 | US6322768 Contacting gas vented from a cellulose pulp bleaching process with an alkaline metal base and peroxide forming an chlorite and oxidizing with an acid; efficiency |
| 11/26/2001 | CA2348815A1 A process and a fluffer device for treatment of a fiber stock suspension |
| 11/23/2001 | CA2348219A1 Method and apparatus for treating pulp |
| 11/22/2001 | WO2001088236A2 Alkaline pulp having low average degree of polymerization values and method of producing the same |
| 11/22/2001 | DE10024790A1 Adding bulk to a paper/cardboard fiber suspension uses an additive of calcium oxide or hydroxide for exposure to power plant exhaust gas in a reactor to form deposits of calcium carbonate on the fiber surfaces |
| 11/21/2001 | EP1155307A1 Method for monitoring quality of paper web |
| 11/21/2001 | EP1155192A1 Softened comminution pulp |
| 11/21/2001 | EP1155183A1 Oxygen gas bleaching of pulp |
| 11/21/2001 | EP1155040A1 Oxidized cellulose-containing fibrous materials and products made therefrom |
| 11/21/2001 | EP1155039A1 Process for selective oxidation of cellulose |
| 11/21/2001 | CN1075144C Method for bleaching micro powdered plant powder |
| 11/21/2001 | CN1075143C Method for removing hexenuronic acids cellulose pulp by heat treatment |
| 11/20/2001 | US6319361 Reaction product of cellulose aldehydes and water soluble polymer; high initial wet strength |
| 11/20/2001 | US6319357 Method for two-stage oxygen bleaching and delignification of chemical pulp |
| 11/20/2001 | US6319356 Process for controlling odor in paper and paperboard using a halohydantoin |
| 11/20/2001 | US6319288 For reductive bleaching in the paper and textile industries |
| 11/15/2001 | WO2001086060A1 Dewatering device |
| 11/15/2001 | WO2001086059A1 Method and apparatus for regulating a peroxide bleaching process |
| 11/15/2001 | WO2001086043A1 Lyocell fibers |
| 11/15/2001 | US20010041749 Contaminant dispersants useful in recycling of treated containers |
| 11/15/2001 | US20010040015 Concurrently heat- treating and convolving cellulosic fiber pulp at elevated temperature and pressure at high consitency, so as to preclude substantial fibrillation and attendant paper strength and fiber bonding development |
| 11/15/2001 | CA2407846A1 Dewatering device |
| 11/14/2001 | EP1153168A1 Arrangement for adjusting width of fibre web |
| 11/14/2001 | CN1074790C Enhancement of laccase reactions |
| 11/13/2001 | US6315942 System for delivery of gas-enriched fluids |
| 11/13/2001 | US6315863 Chlorine dioxide pulp bleaching process having reduced barium scaling by recycling post-chlorination waste filtrate |
| 11/13/2001 | US6315862 Process for bleaching pulp with adsorption of metals |
| 11/13/2001 | US6315861 Process for conditioning ozone gas recycle stream in ozone pulp bleaching |
| 11/08/2001 | WO2001083881A2 Peroxide bleaching of wood pulp |
| 11/07/2001 | EP0826086B1 Method and apparatus for heating and pressuring a fibre pulp suspension during transportation to a bleaching reactor |
| 11/06/2001 | US6311849 Device for dehydrating and washing suspensions of fibrous material |
| 11/05/2001 | WO2001085846A1 Method and composition for dispersing hydrophobic particles in aqueous suspensions |
| 11/05/2001 | CA2404391A1 Method and composition for dispersing hydrophobic particles in aqueous suspensions |
| 11/01/2001 | WO2001081666A2 Cellulose fiber having improved biostability |
| 11/01/2001 | WO2001046518A8 New process for pre-treating cellulosic fibers and cellulosic fiber blends |
| 11/01/2001 | US20010035272 Controlling tempertaure, pressure |
| 11/01/2001 | US20010035271 Process for the inhibition of scale |
| 11/01/2001 | CA2405354A1 Method for producing cellulose fiber having improved biostability and the resulting products |
| 10/31/2001 | CN2457184Y Extracting machine for pulp black liquor |
| 10/31/2001 | CN1319657A Intensified action of paint enzyme reaction |
| 10/31/2001 | CN1074074C Laminate base stock |
| 10/31/2001 | CN1074073C Bleaching of filled paper |
| 10/30/2001 | CA2184706C Impact of temperature and alkali charge on pulp brightness |
| 10/25/2001 | WO2001029308A8 Fibers from plant seeds and use |
| 10/25/2001 | WO2000066833A9 Fluff pulp for absorption products |
| 10/25/2001 | DE10018192A1 Multifunktionelle Polymere, Verfahren zu ihrer Herstellung und ihre Verwendung Multifunctional polymers, processes for their preparation and their use |
| 10/24/2001 | CN1318666A Pulp making and paper making process with low water consumption and less waste water exhausted |
| 10/23/2001 | US6306334 Dissolving cellulose in solvent to form a dope; extruding dope through spinning orifices in melt blowing head while maintaining conditions of gas velocity, to form elongated latent fiber strands; regenerating strands to form lyocell |
| 10/23/2001 | US6306259 Device for the treatment of a fibrous suspension |
| 10/23/2001 | US6306253 Acid treatment of pulp at high temperature prior to chlorine dioxide bleaching |