| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 10/18/2001 | WO2001077195A1 Multifunctional polymers, method for the production and use thereof |
| 10/17/2001 | EP1144756A1 Kraft wood fibers for carboxyalkyl cellulose |
| 10/17/2001 | EP1095185A4 Process for controlling odor in paper and paperboard |
| 10/17/2001 | CN2454402Y Two-net wash hollander |
| 10/17/2001 | CN1318119A Method and appts. for washing fibre pulp mixture |
| 10/16/2001 | US6302997 Environmentally-benign alternatives to the use of trees. |
| 10/16/2001 | US6302996 Relates to an arrangement comprising means for adjusting the thickness of the pulp layer being fed between the wires, i.e. the basis weight of the fiber web being washed. |
| 10/11/2001 | WO2001075221A1 A process for bleaching a lignocellulosic pulp |
| 10/11/2001 | WO2001075220A1 A method for controlling the delignification and bleaching of a pulp suspension |
| 10/11/2001 | US20010028955 Lyocell fibers, and compositions for making the same |
| 10/11/2001 | US20010027850 Method and apparatus for pulp yield enhancement |
| 10/11/2001 | CA2405325A1 A method for controlling the delignification and bleaching of a pulp suspension |
| 10/11/2001 | CA2404691A1 A process for bleaching a lignocellulosic pulp |
| 10/10/2001 | EP1139961A1 Absorbent structures of chemically treated cellulose fibers |
| 10/10/2001 | EP0759105B2 Method for preparing delignified and bleached chemical paper pulps |
| 10/10/2001 | CN2453034Y Belt type pressure filter |
| 10/10/2001 | CN1072743C Oxygen delignification of lignocellulosic pulp in two steps |
| 10/09/2001 | US6300259 Crosslinkable cellulosic fibrous product |
| 10/04/2001 | WO2001073195A1 Treatment of bleach plant filtrates |
| 10/04/2001 | US20010025695 Reacting aqueous suspension of fibers with peroxy compound in presence of metal complex catalyst containing iron or manganese and macrocyclic coordinating ligand; brightness without chlorine; alkalinity prevents cellulose breakdown |
| 10/04/2001 | EP1138820A1 Process for the removal of fine particle-shaped impurities from waste paper pulp |
| 10/04/2001 | EP1137843A1 Dewatering device |
| 10/04/2001 | EP1137842A1 Oxygen bleaching of pulp using an agglomerated bleach activator |
| 10/04/2001 | EP1137841A1 A sanitary paper product made by modifying coarse fibers and process thereof |
| 10/04/2001 | EP0765394B1 Purified myceliophthora laccases and nucleic acids encoding same |
| 10/04/2001 | DE10015355A1 Removal of fine- and micro-sticky particles from suspensions of waste paper fibers, combines fine fractionation screening with froth flotation |
| 10/03/2001 | CN2451627Y Non-power paper pulp washing dewatering equipment |
| 10/02/2001 | US6296737 Method of making readily debonded pulp products |
| 10/02/2001 | US6296671 Degradation of fibers, yarns, etc composed of plant material, cleaning and laundering compounds |
| 09/27/2001 | WO2001071092A2 Pitch and stickies control in pulp and papermaking processes |
| 09/27/2001 | US20010024716 Fibrous absorbent material and methods of making the same |
| 09/27/2001 | US20010023751 Adding water soluble polyol i.e. polyvinyl alcohol, betonite, additives, and filler to waste paper stock system to reduce sticky contaminants |
| 09/26/2001 | EP1136617A1 Method of chemically loading fibers in a fiber suspension |
| 09/26/2001 | CN1314512A Method for catalytic bleaching pulp |
| 09/26/2001 | CN1071823C Process for preparing reduced odor and improved brightness individualized polycarboxylic acid crosslinked fibers |
| 09/25/2001 | US6293972 Process for fluorinating cellulosic materials and fluorinated cellulosic materials |
| 09/20/2001 | WO2000038607A9 Absorbent structures of chemically treated cellulose fibers |
| 09/19/2001 | EP0763156B1 Process for removal of metal compounds in lignocellulosic pulp |
| 09/19/2001 | EP0610371B1 Thermostable xylanase from a strain of rhodothermus marinus |
| 09/19/2001 | CN1313837A Process for the inhibition of scale in harsh system and novel antiscalants for same |
| 09/18/2001 | USRE37379 High pressure gas exchanger |
| 09/18/2001 | US6290812 Adjusting magnecium content of process water;supplying carbonate source to process water to precipiate calcium as calcium carbonate; adding white liquor to precipitate metals; adding flocculating agent; separation by floation |
| 09/18/2001 | CA2149236C Novel xylanase, process for producing the same, method for the treatment of pulp, and production of xylo-oligosaccharides |
| 09/13/2001 | US20010020521 Pulp digested and oxygen delignified in order to decrease Kappa number to less than 24, preferably less than 14, and after that treated in acid stage at pH of 2-5 and temperature of 75-130 degrees C to further reduce kappa number |
| 09/13/2001 | US20010020520 Treating aqueous slurry of individual cellulosic fibers containing brightness and/or strength enhancing chemicals with steam at super atmospheric temperature and pressure and explosively releasing pressure to produce curled fibers |
| 09/12/2001 | EP1132517A1 Method of providing bleached papermaking fibres with durable curl and their absorbent products |
| 09/12/2001 | EP1132516A1 Method of preparing papermaking fibers with durable curl and their absorbent products |
| 09/12/2001 | EP1131483A1 Inhibition of pulp and paper yellowing using hydroxylamines and other coadditives |
| 09/12/2001 | EP0963482A4 Compositions and methods for inhibiting organic contaminant deposition in pulp and papermaking systems |
| 09/12/2001 | CN1070961C Method for pressurized peroxide bleaching |
| 09/12/2001 | CN1070960C 扩散器 Diffuser |
| 09/12/2001 | CN1070959C Apparatus for washing of pulp |
| 09/06/2001 | US20010018956 Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances and processes for its use |
| 09/05/2001 | EP1129254A4 Method of papermaking having zero liquid discharge |
| 09/05/2001 | EP1129254A1 Method of papermaking having zero liquid discharge |
| 09/05/2001 | EP1129253A1 Vegetable-material based preparations for reducing and/or preventing slime and encrustation closed aqueous or water-carrying systems |
| 09/05/2001 | EP0839226B1 Method and device for treating a pulp suspension |
| 09/05/2001 | EP0805794B1 Use of tri-acids based on alkoxylated tertiary amines as complex formers |
| 09/05/2001 | CN2446152Y Circular net couch roll vacuum box |
| 08/30/2001 | US20010017196 Method of bleaching cellulose pulp |
| 08/29/2001 | EP0821616B1 Device for admixing a first fluid into a second fluid |
| 08/29/2001 | CN1310757A Novel mannanases |
| 08/29/2001 | CN1310741A Fibrous absorbent material and methods of making the same |
| 08/29/2001 | CN1070153C The use of dialdehydes and acetals inhibiting decomposition of peroxide in the production and treatment of recycled fiber pulp and other fiber pulp |
| 08/28/2001 | US6280568 For producing kraft pulp of increased strength and bleachability |
| 08/22/2001 | EP1126075A2 Dissolved solids control in pulp production |
| 08/22/2001 | EP1125016A1 Method and apparatus for the thickening of fiber suspensions |
| 08/22/2001 | CN1309689A Metal ligand-contg. bleaching compositions |
| 08/22/2001 | CN1309602A Method and apparatus for feeding mass of particulate or fibrous material |
| 08/21/2001 | US6277248 Supplying starting gas from oxygen production facilities alone to an ozonizer or mixing pure oxygen gas from liquid oxygen facilities with the gas from the oxygen production facilities; controlling the concentration |
| 08/16/2001 | WO2001059205A1 Method for bleaching mechanical and chemithermomechanical pulp |
| 08/16/2001 | US20010014364 Applying directly to the leafy vegetable a stabilized aqueous alkali or alkaline earth metal hypobromite solution to extend the shelf-life, reduce the microbial load, and enhance product appearance and quality |
| 08/16/2001 | EP1123437A1 Ozone bleaching process comprising oxalic acid addition |
| 08/16/2001 | CA2395824A1 Method for bleaching mechanical and chemithermomechanical pulp |
| 08/14/2001 | US6273999 Suspension of paper treated in a coating machine and to be reintroduced into the production line, broke can be reprocessed to form paper, |
| 08/14/2001 | US6273994 Rapid bleach brightness and lignin content of the pulp. |
| 08/14/2001 | US6272710 Plate diffuser for treating comminuted cellulosic fibrous material |
| 08/09/2001 | WO2001057309A2 Method for bleaching de-inked and/or recycled pulps |
| 08/09/2001 | DE10005355A1 Bleaching of cellulose or other materials using a flow system in which a defined volume of material is bleached with ozone and most, or all, of the ozone is used up in the reaction |
| 08/08/2001 | CN2441845Y Double roller replacable wash engine |
| 08/02/2001 | WO2001055502A1 Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp |
| 08/02/2001 | WO2001055501A1 Method for determining a characteristic value for the binding force potential of suspended paper fibers and use of this method |
| 08/02/2001 | US20010010659 Mixing device |
| 08/02/2001 | DE10003383A1 Verfahren zur Bestimmung eines Kennwertes für das Bindekräfte-Potential von suspendierten Papierfasern sowie Verwendung des Verfahrens A method for determining a characteristic value for the binding strength potential of suspended paper fibers, as well as use of the method |
| 08/02/2001 | CA2397970A1 Method for determining a characteristic value for the binding force potential of suspended paper fibers and use of this method |
| 08/02/2001 | CA2379691A1 Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp |
| 07/31/2001 | CA2111519C Oxygen/ozone/peracetic acid delignification and bleaching of cellulosic pulps |
| 07/26/2001 | WO2001053810A1 Method and measurement device for measuring suspension |
| 07/26/2001 | WO2001053602A1 Bleaching pulp |
| 07/26/2001 | WO2001053601A1 Process for reducing sticky contaminants in stock systems containing waste paper and in coated broke |
| 07/26/2001 | DE19954246A1 Verfahren zur Erhöhung der Homogenität und des Weißgrades von Papierfaserstoff A method for increasing the homogeneity and the whiteness of paper pulp |
| 07/26/2001 | CA2391459A1 Process for reducing sticky contaminants in stock systems containing waste paper and in coated broke |
| 07/24/2001 | US6264794 Process for manufacturing glazed paper |
| 07/24/2001 | US6264790 Process for the peracid bleaching of chelated chemical pulp |
| 07/24/2001 | CA2137451C Bleaching recycled pulp with a reductive-oxidative sequence |
| 07/24/2001 | CA2137450C Bleaching recycled pulp with ozone and hydrogen peroxide |
| 07/19/2001 | WO2001051702A1 Heat treatment of paper pulp |
| 07/18/2001 | EP1115946A1 Bleaching of medium consistency pulp with ozone without high shear mixing |
| 07/18/2001 | EP1115945A1 Method and apparatus for washing fibre pulp mixture |
| 07/18/2001 | EP1115944A1 Method for preparation of a fibrous stock out of herb-stemmed plants |