| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 08/18/2004 | CN1522317A Lyocell fibers |
| 08/17/2004 | US6776876 Method of treating cellulosic pulp to remove hexenuronic acid |
| 08/17/2004 | CA2305194C Resin-treated mercerized fibers and products thereof |
| 08/12/2004 | WO2004067835A1 Method for washing pulp in e bleaching line |
| 08/12/2004 | WO2004067834A1 Method for washing pulp in a bleaching line and a bleaching line |
| 08/12/2004 | WO2004067503A1 Compositions containing formamidine sulfinic acid, method for producing said compositions and the use thereof |
| 08/12/2004 | US20040158057 Generating high viscosity hydroxyethyl cellulose and southern softwood kraft cellulose pulps for use in personal care, household care, paint, building materials and construction, pharmaceutical, medical care, oilfield mineral processing and foods |
| 08/12/2004 | US20040154773 Arrangement for controlling the edge of pulp mass in a web former and a method for controlling the edge of pulp mass |
| 08/12/2004 | US20040154770 Method and device for loading fibers contained in a fibrous suspension with calcium carbonate |
| 08/12/2004 | US20040154761 Brightness; adding a sulfide chelate compound; digesting wood chips; pressurized oxygen delignification |
| 08/12/2004 | DE10303646A1 Verfahren zur Entfernung von Störstoffen aus einer wässrigen Papierfasersuspension A method for removing anionic trash from an aqueous paper fiber suspension |
| 08/12/2004 | DE10302783A1 Verfahren zur Erzeugung einer für die Herstellung einer Tissue- oder Hygienebahn bestimmten Faserstoffsuspension A method for generating a particular for the production of a tissue or hygiene web pulp suspension |
| 08/12/2004 | CA2514698A1 Method for washing pulp in a bleaching line |
| 08/11/2004 | EP1445373A2 Process for making a very low cod unbleached pulp |
| 08/11/2004 | EP1404920A4 Cross-linked pulp and method of making same |
| 08/11/2004 | EP0937172B1 Method of producing pulp using single-stage cooking with formic acid and washing with performic acid |
| 08/11/2004 | EP0728238B2 Method of bleaching chemical paper pulp |
| 08/11/2004 | CN1519424A Use of thinnings and other low specific gravity wood for lyocell pulps method |
| 08/10/2004 | US6774992 Determination of the property of a solution or solid using raman ratios |
| 08/10/2004 | US6773648 Meltblown process with mechanical attenuation |
| 08/10/2004 | US6773547 A low consistency slurry of cellulose fiber is mixed with high partial pressure ozone under high shear conditions, ozone is then maintained in contact with cellulose fibers to effect bleaching of fibers |
| 08/10/2004 | US6773546 Adding the pulp containing black liquor to a solvent layer in a vessel; separation by the solvent layer and dissimilar densities; pulp removed from the bottom, black liquor devoid of dilution from the top; solvent retained; papermaking |
| 08/05/2004 | WO2004065690A2 Method for creating a fibrous substance suspension used for producing a tissue web or hygiene web |
| 08/05/2004 | US20040149404 Reducing water requirement; simplified, lower cost filtrate distribution system; runnability |
| 08/05/2004 | DE10303023A1 Formamidinsulfinsäure enthaltende Zusammensetzungen, Verfahren zu deren Herstellung und deren Verwendung Formamidine sulfinic acid-containing compositions, process for their preparation and their use |
| 08/05/2004 | CA2514297A1 Method for creating a fibrous substance suspension used for producing a tissue web or hygiene web |
| 08/04/2004 | EP1443144A1 Method of bleaching cellulose pulp and apparatus therefore |
| 08/04/2004 | EP1443143A2 Method for removing contaminants from an aqueous fibrous suspension |
| 08/04/2004 | EP1402092A4 Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same |
| 08/04/2004 | CN2630296Y Long-net washing squeezer |
| 08/04/2004 | CN1517491A Thinning wood and other low sprecific wood used for leiser product |
| 08/04/2004 | CN1517490A Thinning wood and other low specific wood used for leiser pomace |
| 08/04/2004 | CN1517487A Method of using thinning wood and other low specific wood for leiser product |
| 08/03/2004 | US6770576 Absorbent structures of chemically treated cellulose fibers |
| 08/03/2004 | US6770168 Process for oxygen pulping of lignocellulosic material and recorvery of pulping chemicals |
| 08/03/2004 | US6769199 Process for producing dried singulated cellulose pulp fibers using a jet drier and injected steam and the product resulting therefrom |
| 07/31/2004 | CA2455247A1 Method of bleaching cellulose pulp and bleaching line therefore |
| 07/29/2004 | WO2004063461A1 Bleaching of cellulosic fibre material with peroxide using polymers as a stabiliser |
| 07/29/2004 | WO2004063276A1 Polymer composition for peroxide bleaching of cellulosic fibre material and processes for peroxide bleaching |
| 07/29/2004 | US20040144507 Pretreated pulp fibers; polyestersiloxane, polyethersiloxane copolymer |
| 07/28/2004 | EP1441050A1 Use of low specific gravity wood for lyocell products |
| 07/28/2004 | CN1159236C Process for treating intermediate waste papermaking water by use of waste |
| 07/27/2004 | US6767463 Method for minimizing the new water use in the water circulation system of a treatment plant |
| 07/27/2004 | US6767432 Apparatus for the thickening of fiber suspensions |
| 07/22/2004 | WO2004061202A1 Amino-functionalized pulp fibers |
| 07/22/2004 | WO2004061201A1 Method of producing twisted, curly fibers |
| 07/22/2004 | US20040142843 Use of metal complex compounds as oxidation catalysts |
| 07/22/2004 | US20040140070 Fibers comprise polymeric resin withcovalently bonded radiation reactive groups capable of crosslinking when impacted with radiation; absorbents; disposable products |
| 07/21/2004 | CN1513978A Decolur yeast of manganese producing depended pervxidase and its application |
| 07/21/2004 | CN1158243C N-bis- or N-tris-[(1,2-dicarboxy-ethoxy)-ethyl]-amine derivatives and preparation and use of the same |
| 07/20/2004 | CA2175062C Aminoalkane diphosphonic acids in pulp bleaching |
| 07/15/2004 | US20040134630 Method of adjusting pulp washing process and determining efficiency |
| 07/14/2004 | EP1437441A2 Singulated, crosslinked cellulose fibers from a wet pulp sheet |
| 07/14/2004 | EP1437428A1 Use of low specific gravity wood for lyocell products method |
| 07/14/2004 | EP1436371A2 Enzymatic systems for generating active oxygen species for reacting with other precursors to obtain oxidation and/or bleaching |
| 07/14/2004 | EP1155039B1 Process for selective oxidation of cellulose |
| 07/08/2004 | WO2004057102A1 Sealing device |
| 07/08/2004 | WO2004057101A1 Cooking aid for improving the removal of extractives in pulp production, its production and use |
| 07/08/2004 | US20040129394 including the step of applying an electron processing technology (EPT) step on an in-line basis to provide control of pulp viscosity or degree of polymerisation (DP) |
| 07/08/2004 | US20040129393 comprising a cylindrical housing, a feed slot with a breaker bar positioned therein and a rotor mounted for rotation in the housing; fibers have a low knot content |
| 07/07/2004 | EP1435409A2 Very low cod unbleached pulp |
| 07/07/2004 | EP1435404A1 Use of low specific gravity wood for lyocell products method |
| 07/07/2004 | EP1435403A1 Use of low specific gravity wood for lyocell products method |
| 07/07/2004 | CN1156629C Method and appts. for washing fiber pulp mixture |
| 07/06/2004 | US6758942 Process for bleaching pulp or paper |
| 07/01/2004 | WO2003048663A8 Method and device for compressing ozone-containing gas for an ozone pulp bleaching process |
| 07/01/2004 | US20040127869 Method of producing twisted, curly fibers |
| 07/01/2004 | US20040123962 Wet laid paper; tensile strength, wet strength ; applying polyamine to cellulose |
| 07/01/2004 | US20040123483 Process to produce dried singulated cellulose pulp fibers |
| 06/30/2004 | CN1155752C Bleaching method of reducing bleaching composition by decolorued pulp of waste paper |
| 06/30/2004 | CN1155700C Modification of xylanase to improve thermophilicity, alkophilicity and thermostability |
| 06/29/2004 | US6755941 Pulp suspension is fed with calcium carbonate, calcium oxide, and/or calcium hydroxide to react with carbon dioxide; crystal structure; for paper/cardboard production |
| 06/26/2004 | CA2449851A1 Very low cod unbleached pulp |
| 06/24/2004 | WO2004053228A2 Filler-fiber composite |
| 06/24/2004 | WO2004053224A1 Method for reducing the energy demand during refining of chemical pulp |
| 06/24/2004 | WO2004052517A1 Apparatus for mixing |
| 06/24/2004 | WO2004052516A1 Apparatus for mixing |
| 06/24/2004 | WO2004052515A1 Apparatus for mixing |
| 06/24/2004 | US20040118529 Processes for preparing mechanical pulps having high brightness |
| 06/24/2004 | US20040117914 Method for brightening virgin mechanical pulp |
| 06/23/2004 | EP1430178A1 Method in a paper or pulp process to control the chemical state of the pulp and circulation water system |
| 06/23/2004 | EP1430177A1 Seal at press rollers |
| 06/23/2004 | EP1299595A4 Method for preparing pulp from cornstalk |
| 06/22/2004 | US6752902 Preparation of chemical pulp and xylose, utilizing a direct acid hydrolysis on the pulp |
| 06/17/2004 | WO2004050985A1 Removal of pitch from wood chips |
| 06/17/2004 | US20040112557 Wood particles are concurrent bleaches, refined into pulp |
| 06/17/2004 | US20040112556 Bleaching of pulp with chlorine dioxide |
| 06/17/2004 | US20040112555 Bleaching stage using xylanase with hydrogen peroxide, peracids, or a combination thereof |
| 06/16/2004 | EP1015123B1 Apparatus for cleaning a suspension, preferably a fiber mass suspension |
| 06/16/2004 | CN1505703A Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same |
| 06/16/2004 | CN1505699A Method for simultaneous electrochemical production of sodium dithionite and sodium peroxodisulfate |
| 06/15/2004 | US6748671 Process to produce dried singulated cellulose pulp fibers |
| 06/10/2004 | US20040108084 Method for supplying washing liquid to a process for cooking cellulose pulp |
| 06/10/2004 | US20040108082 Filler-fiber composite |
| 06/09/2004 | EP1425466A1 Method of adjusting pulp washing process and determining efficiency |
| 06/09/2004 | EP1425247A2 Control of development of biofilms in industrial process water |
| 06/09/2004 | EP1242678B9 Method for bleaching pulp with chlorine dioxide |
| 06/09/2004 | CN1152950C Metal ligand-contg. bleaching compositions |
| 06/08/2004 | US6746572 Method for determining a characteristic value for the binding force potential of suspended paper fibers and use of this method |
| 06/08/2004 | US6746568 Treatment of filtrates from peroxide bleaching of pulp |