| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 07/18/2001 | EP1115943A1 Method for precipitating hemicellulose onto fibres for improved yield and beatability |
| 07/18/2001 | EP0856080B1 Acid treatment of pulp at high temperature in connection with bleaching |
| 07/18/2001 | EP0791101B1 Odour treatment of malodorous condensates with ozone-containing residual gas |
| 07/17/2001 | US6261679 Fibrous absorbent material and methods of making the same |
| 07/12/2001 | WO2001049481A1 Apparatus for treating pulp and its use |
| 07/12/2001 | WO2001049480A1 Apparatus for treating pulp and its use |
| 07/11/2001 | EP1114219A1 Calcium carbonate synthesis method and resulting product |
| 07/11/2001 | CN2438745Y Double-roller pulp extruding machine |
| 07/10/2001 | US6258209 Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances |
| 07/10/2001 | US6258208 Method for complex treatment of pulp in conjunction with a chlorine dioxide stage |
| 07/10/2001 | US6258207 Alkaline peroxide mechanical pulping of non-woody species |
| 07/05/2001 | WO2001048308A1 Method of draining water from low-consistency water-fibre suspensions |
| 07/05/2001 | WO2001048307A1 Electrochemical method for determinating lignin content of pulp |
| 07/05/2001 | WO2001048025A1 Cyclodextrins covalently bound to polysaccharides |
| 07/05/2001 | WO2001047570A1 Fibrous materials |
| 07/05/2001 | WO2001047569A1 Superabsorbent polymers |
| 07/05/2001 | WO2001047568A1 Fibrous materials |
| 07/05/2001 | US20010006484 Method and apparatus for mixing a second medium with a first medium |
| 07/04/2001 | EP1071841A4 Method and apparatus for countercurrent treatment of slurries |
| 07/04/2001 | CN1302219A Pulp filter or washer and sealing for use therein |
| 07/03/2001 | US6255118 Monitoring chemical concentrations using a device with an excitation source to direct light in a specific direction; the light excites flourescent tracer molecules in the sample, a detector produces a signal proportional to the flourescence |
| 07/03/2001 | US6254724 Stabilizing amount of a hindered amine compound selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-piperidin-4-ol or which are their hydroxylamine salts |
| 07/03/2001 | US6254722 Method for making dissolving pulp from paper products containing hardwood fibers |
| 07/03/2001 | US6254335 Device for admixing a first fluid into a second fluid |
| 07/03/2001 | CA2191081C Process for removal of metal compounds in lignocellulosic pulp |
| 07/03/2001 | CA2016287C Improved vertical wicking structures from wet cross-linked cellulose fibers |
| 06/28/2001 | WO2001046519A1 Peroxyacid delivery process |
| 06/28/2001 | WO2001046518A2 New process for pre-treating cellulosic fibers and cellulosic fiber blends |
| 06/27/2001 | EP1109750A1 Process for the inhibition of scale in harsh systems and novel antiscalants for same |
| 06/27/2001 | EP0970020B1 Process for treating wastewater |
| 06/27/2001 | CN1300896A Mechanical pulping technology removing lignin by biodegradation |
| 06/21/2001 | US20010004005 Acid treatment of pulp at high temperature prior ro chrlorine dioxide bleaching |
| 06/20/2001 | CN2435418Y Air-extacting black liquid extractor |
| 06/20/2001 | CN1299902A Enzyme process of eliminating ink from waste paper |
| 06/19/2001 | US6248879 Polyanhydride crosslinked fibrous cellulosic products and process for their preparation |
| 06/19/2001 | US6248793 Contaminant dispersants useful in recycling of treated containers |
| 06/19/2001 | US6248209 Process for bleaching cellulose pulp with a bleaching assistant having the formula R1-O-{[(C2H4O)m/(AO)n}]-H |
| 06/14/2001 | WO2001042557A1 Raw material for printing paper, method to produce it and printing paper |
| 06/14/2001 | CA2393783A1 Raw material for printing paper, method to produce it and printing paper |
| 06/13/2001 | EP1106732A2 Paper made from aldehyde modified cellulose pulp |
| 06/13/2001 | CN1299426A Cotton linter tissue products and method for preparing same |
| 06/13/2001 | CN1298986A Aldehyde modified cellulose pulp for prepn. of high strength paper products |
| 06/12/2001 | US6245196 Method and apparatus for pulp yield enhancement |
| 06/12/2001 | CA2195300C Method for preparation of pigmented paper fibers and fiber products |
| 06/07/2001 | US20010002616 Process for increasing the water retention capacity in fibrous webs |
| 06/07/2001 | DE19958038A1 Verfahren zur Erhöhung des Wasserrückhaltevermögens von Papierfaserstoffen Method to increase the water retention capacity of paper fibers |
| 06/06/2001 | EP1104819A1 Process for increasing the water retention value of paper pulps |
| 06/05/2001 | US6242245 Multicomponent system for modifying, degrading or bleaching lignin or lignin-containing materials, and processes for its use |
| 06/05/2001 | US6241852 Method and device for mixing of a fluid into a pulp-suspension at the lowest pressure of the suspension |
| 06/05/2001 | US6241802 Method for delivery of gas-enriched fluids |
| 06/05/2001 | US6241779 Metal ligand containing bleaching compositions |
| 06/05/2001 | CA2173191C Electrochemical process |
| 06/02/2001 | CA2327248A1 Environmentally-friendly fiberline for producing bleached chemical pulp |
| 05/31/2001 | US20010001977 Kraft cooking communited cellulose fibers at high rate by controlling effective dissolved lignin concentration of the cooking liquor; kraft pulp of increased strength, bleachability that uses less effective alkali |
| 05/30/2001 | CN1297085A Method for use of activated ozone in bleaching paper pulp |
| 05/29/2001 | US6238517 Multistage, multizonal |
| 05/29/2001 | US6238516 Washing cellulose |
| 05/25/2001 | WO2001036740A2 Paper making processes using enzyme and polymer combinations |
| 05/23/2001 | EP1101860A1 Method for bleaching pulp with activated ozone |
| 05/23/2001 | EP1101859A1 Process for deiniking, decolouring, disinfecting and bleaching waste paper |
| 05/23/2001 | EP1100605A1 Thickener |
| 05/23/2001 | EP0772717B1 Process for preparing a lignocellulose-based product, and product obtainable by the process |
| 05/23/2001 | DE19953589A1 Oxidierte polymere Kohlenhydrate und daraus hergestellte Produkte Oxidized polymeric carbohydrates and derived products |
| 05/23/2001 | DE19948989A1 Mediatoren, Peroxidverbindungen und pH-Stabilisatoren enthaltende lagerstabile Formulierungen und deren Verwendung in enzymatischen Bleichsystemen sowie enzymatische 2-Komponenten-Bleichsysteme und deren Verwendung Mediators, peroxide compounds and pH stabilizers containing storage-stable formulations and their use in enzymatic bleaching systems, as well as enzymatic 2-component bleaching systems and their use |
| 05/23/2001 | CN1296099A Method for all chlorine free bleaching paper pulp by biological technology |
| 05/22/2001 | US6235392 Variable cross-sections; uniformly pebbled surface; low gloss |
| 05/22/2001 | US6235154 Chlorine dioxide bleaching in the presence of an aldehyde |
| 05/22/2001 | US6235153 Method of producing a bleached pulp with chlorine dioxide under a pressure created by a compressed gas containing oxygen |
| 05/22/2001 | US6235152 Process for treating an aqueous liquid containing forming calcium scale salts by adding a copolymer of 1,2-dihdroxy-3-butene antiscalant |
| 05/22/2001 | US6235150 Method for producing pulp and paper with calcium carbonate filler |
| 05/22/2001 | US6235149 Acrylic acid/maleic acid copolymers as detackification agents for adhesives contained in secondary fiber |
| 05/22/2001 | US6233983 Washing apparatus comprising a float body |
| 05/19/2001 | CA2326311A1 Method for applying activated ozone in pulp bleaching |
| 05/17/2001 | WO2001034903A1 Metal-crosslinkable oxidized cellulose-containing fibrous materials and products made therefrom |
| 05/17/2001 | WO2001034902A2 Process and composition for preparing a lignocellulose-based product, and the product obtained by the process |
| 05/17/2001 | WO2001034656A1 Oxidized polysaccharides and products made thereof |
| 05/17/2001 | WO2001034091A2 Modification of polysaccharide containing materials |
| 05/17/2001 | DE19953591A1 Metallvernetzbare oxidierte cellulosehaltige Faserstoffe und daraus hergestellte Produkte Metallvernetzbare oxidized cellulosic fiber materials and products made therefrom |
| 05/17/2001 | DE19953590A1 Cellulose-containing fibrous material, for tissue papers and tissue products used in personal grooming and hygiene, includes hydroxy groups oxidized at the glucose units to aldehyde and/or carboxy groups |
| 05/17/2001 | DE19949265A1 Verfahren zum Minimieren des Neuwassereinsatzes im Wasserkreislauf bei einer Aufbereitungsanlage A method for minimizing the Neuwassereinsatzes in the water cycle at a treatment plant |
| 05/17/2001 | CA2390568A1 Modification of polysaccharide containing materials |
| 05/16/2001 | EP0876534B1 Production of sanitary paper |
| 05/16/2001 | CN1295636A Treatment of filtrates from peroxide bleaching of pulp |
| 05/15/2001 | US6232419 Process for the inhibition of scale in harsh systems and novel antiscalants for same |
| 05/15/2001 | US6231718 Two phase ozone and oxygen pulp treatment |
| 05/10/2001 | WO2001032978A1 Cellulose fiber-based compositions and their method of manufacture |
| 05/09/2001 | EP1098032A2 Sealing arrangement for pulp dewatering arrangement |
| 05/09/2001 | EP0796369B1 Method for pressurized peroxide bleaching |
| 05/09/2001 | EP0778908B1 Thin mat washing of cellulosic pulp |
| 05/09/2001 | CN1065578C Pulp bleaching |
| 05/08/2001 | US6228223 Composition for treatment of cellulosic material |
| 05/08/2001 | US6228215 Method for countercurrent treatment of slurries |
| 05/08/2001 | US6228212 Method of removing wax from cellulosic fiber used in a fiber suspension for a paper-making machine |
| 05/08/2001 | US6228126 Oxidizing cellulose or cellulose pulp in an aqueous alkaline solution by an oxidizer (equivalency<5 gramsactive chlorine/ 100 grams cellulose) and a mediating nitoxyl radical; tissue paper/towels; papermaking |
| 05/08/2001 | CA2135826C Process for removing inorganic components that form ash on ignition and oily waste from paper during recycling |
| 05/03/2001 | WO2001031066A1 Reaction method, reaction apparatus and enzyme |
| 05/02/2001 | EP1096062A1 Process to improve the homogenity and bleaching degree of paper pulp |
| 05/02/2001 | EP1095185A1 Process for controlling odor in paper and paperboard |
| 05/02/2001 | EP1095184A1 Method of producing lignocellulosic pulp from non-woody species |
| 05/02/2001 | CN1293723A Lyocell fibers and compositions for making the same |