| Patents for D21C 3 - Pulping cellulose-containing materials (5,020) |
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| 06/28/2001 | WO2001046516A1 Raw material for printing paper, method to produce it and printing paper |
| 06/28/2001 | DE19959826A1 Verfahren zur Verminderung und/oder Vermeidung von Ablagerungen von Holzinhaltsstoffen A method for reducing and / or preventing deposits of wood constituents |
| 06/27/2001 | EP1109750A1 Process for the inhibition of scale in harsh systems and novel antiscalants for same |
| 06/26/2001 | US6252109 Quickly releasing bound formic acid from washed material, i,e. cellulose or lignin formates from a pulp cooker, at a normal pressure and at a temperature less than 1oo degrees c. using a low concentration of free formic acid as catalyst |
| 06/26/2001 | US6251221 Impregnating the ligno-cellulosic feed stock with an extraction liquor containing a glycol and an organic or lewis acid |
| 06/19/2001 | US6248208 Pretreatment of chips before cooking |
| 06/14/2001 | WO2001042557A1 Raw material for printing paper, method to produce it and printing paper |
| 06/14/2001 | WO2001042555A2 Method for reducing and/or avoiding the build up of wood components |
| 06/14/2001 | CA2394173A1 Method for reducing and/or avoiding the build up of wood components |
| 06/14/2001 | CA2393783A1 Raw material for printing paper, method to produce it and printing paper |
| 06/13/2001 | EP0815315B1 Method and device for process control in cellulose and paper manufacture |
| 06/13/2001 | EP0796367B1 Production of prehydrolyzed pulp |
| 06/13/2001 | CN1299424A Process for producing pulp with a mixture of formic acid and acetic acid as cooking chemical |
| 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 |
| 06/06/2001 | EP1053367A4 A pulping composition and process using aminoalkoxylsilanes |
| 06/05/2001 | US6241851 Treatment of cellulose material with additives while producing cellulose pulp |
| 06/05/2001 | CA2205043C Cellulose extraction 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 | EP1102817A1 Cellulose fiber based compositions and film |
| 05/30/2001 | EP1056902A4 Process for production of chemical pulp from herbaceous plants |
| 05/30/2001 | CN1297084A Middle- and high-grade stationery paper made of rice straw pulp and its making process |
| 05/22/2001 | US6235392 Variable cross-sections; uniformly pebbled surface; low gloss |
| 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 |
| 05/16/2001 | EP1099020A1 A process for concentrating soluble and colloidal substances in process waters |
| 05/15/2001 | US6232419 Process for the inhibition of scale in harsh systems and novel antiscalants for same |
| 05/10/2001 | WO2001032715A1 Process for the production of organic products from lignocellulose containing biomass sources |
| 05/09/2001 | EP0909353B1 Method and device for the continuous cooking of pulp |
| 05/08/2001 | US6228177 Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics |
| 05/02/2001 | CN1293723A Lyocell fibers and compositions for making the same |
| 05/02/2001 | CN1293284A Technology for preparing paper pulp from corn stalk |
| 04/26/2001 | WO2001029308A1 Fibers from plant seeds and use |
| 04/24/2001 | US6221487 Lyocell fibers having enhanced CV properties |
| 04/24/2001 | CA2103066C White liquor preparation and pulping process |
| 04/18/2001 | EP1092059A1 Partial autocausticization of alkali liquors for wood pulping processes |
| 04/18/2001 | EP1092058A1 Method for selectively delignifying lignocellulosic materials |
| 04/18/2001 | EP1075563A4 Method for removing wax from a pulp furnish |
| 04/18/2001 | CN1292052A Method for removing wax from pulp furnish |
| 04/12/2001 | WO2001025531A1 Process for preventing scaling of heat transfer surfaces |
| 04/11/2001 | EP1090181A1 Increasing causticizing efficiency of alkaline pulping liquor by borate addition |
| 04/11/2001 | EP1064082A4 Contaminant dispersants useful in recycling of treated containers |
| 04/11/2001 | CN1291246A Modified cellulosic fibers and fiber webs containing these fibers |
| 04/11/2001 | CN1290786A Method for producing chlorine-free bleached pulp, paper and paper board by using hemp stem |
| 04/11/2001 | CN1290785A Method for producing anti-rust raw paper by using waste ramie |
| 04/10/2001 | US6214976 Chemical method for lignin depolymerization |
| 04/10/2001 | US6214164 Prewashing, crushing, delignifying |
| 04/04/2001 | EP1088937A1 Process for preparing high quality paper from vegetable residuals |
| 04/04/2001 | CN1290316A Pulping composition and process using aminoalkoxylsilanes |
| 04/04/2001 | CN1290189A Contaminant dispersants useful in recycling of treated containers |
| 04/03/2001 | US6210801 For making lyocell fiber with enhanced dyeability, less fibrillation |
| 03/29/2001 | WO2001021882A1 A process for the production of sulphate pulp |
| 03/21/2001 | EP1084291A1 Process for producing pulp with a mixture of formic acid and acetic acid as cooking chemical |
| 03/21/2001 | EP0782642B1 Method and apparatus for the continuous production of cellulosic pulp |
| 03/21/2001 | CN1063505C Biological delignification-machinery pulping technology |
| 03/15/2001 | WO2001018278A1 Method for producing a polysulfide |
| 03/15/2001 | DE19856582C1 Verfahren zur Gewinnung von Chemiezellstoff aus Hackschnitzeln A process for the production of chemical pulp from wood chips |
| 03/13/2001 | CA2189296C Method and apparatus for improving a batch cooking process |
| 03/08/2001 | WO2001016423A1 Pulping process for corn stover and other nonwood fibrous materials |
| 03/08/2001 | CA2383349A1 Pulping process for corn stover and other nonwood fibrous materials |
| 03/01/2001 | WO2001014631A1 Composition for increasing the mass absorption of polar systems in hydrophobic-hydrophilic hybrid materials |
| 03/01/2001 | DE19939866A1 Zusammensetzung zur Erhöhung der Massenaufnahme von polaren Systemen in hydrophob-hydrophilen Hybridmaterialien Composition for increasing the mass uptake of polar systems in hydrophobic-hydrophilic hybrid materials |
| 02/21/2001 | EP1077282A1 Improved chemical pulping process |
| 02/21/2001 | CN1284586A Method for treatment of biological base filamentary material |
| 02/20/2001 | US6190890 Amino acid sequence of enzyme with carboxymethyl cellulase, endoglucanase, and beta-glucanase activity; from aspergillus; food processing like vegetable or fruit juice manufacture; antifouling agents for membranes |
| 02/17/2001 | CA2316111A1 Aldehyde modified cellulose pulp for the preparation of high strength paper products |
| 02/14/2001 | EP1075563A1 Method for removing wax from a pulp furnish |
| 02/13/2001 | US6187262 Inhibition of corrosion in aqueous systems |
| 02/06/2001 | US6183597 Method of producing a pulp from cellulosic material using formic acid and hydrogen peroxide |
| 01/30/2001 | US6179959 Method of making kenaf pulp |
| 01/30/2001 | US6179958 Method for continuous cooking of cellulose-containing fibre material |
| 01/24/2001 | CN1281074A Diwei self-catalyzing alcohol process for pulping |
| 01/24/2001 | CN1061116C Process for treatment of gaseous discharges resulting from kraft process using derivatives of undecylenic and/or undecynoic acid |
| 01/23/2001 | US6176971 Passing hot spent chemical cellulose pulping treatment liquor to a reboiler, then pressurization of the resulting steam for subsequently steaming chips to be pulped |
| 01/18/2001 | WO2001004362A1 Preparation of chemical pulp and xylose, utilizing a direct acid hydrolysis on the pulp |
| 01/17/2001 | EP1068376A1 Lyocell fibers, and compositions for making the same |
| 01/16/2001 | US6174411 Has an inverted top separator and is hydraulically filled to above the level of the inverted top separator, and may be substantially completely hydraulically full. |
| 01/10/2001 | EP1066109A1 Device, method and pressurized reactor for the treatment of solids with liquefied gases under pressure |
| 01/04/2001 | WO2001000923A1 Digestion assistant for lignocelluloses and process for the production of pulps |
| 01/04/2001 | CA2377520A1 Digestion assistant for lignocelluloses and process for the production of pulps |
| 01/03/2001 | EP1064082A1 Contaminant dispersants useful in recycling of treated containers |
| 12/21/2000 | WO2000077295A1 Digestion method for pulp |
| 12/21/2000 | WO2000077294A1 Digesting liquor for pulp and method for producing pulp |
| 12/20/2000 | CN1277282A Healthy vegetable and fruit fiber paper towel resulting in less environmental pollution |
| 12/12/2000 | US6159337 Dissolved organic materials control in cellulose pulp production |
| 12/07/2000 | WO2000073578A1 Method for recovering chemicals in a process of producing pulp by kraft process |
| 12/07/2000 | WO2000073575A1 Method for avoiding mechanical damage of pulp |
| 12/07/2000 | WO2000073574A1 Foam-controlling process |
| 12/07/2000 | WO2000073573A1 Process for digesting lignocellulose material |
| 12/07/2000 | WO2000073572A1 Process for digesting lignocellulose material |
| 12/07/2000 | CA2374900A1 Foam-controlling process |
| 12/06/2000 | EP1057926A1 Foam-controlling process |
| 12/06/2000 | EP1056902A1 Process for production of chemical pulp from herbaceous plants |
| 12/05/2000 | US6156156 Method of producing pulp using single-stage cooking with formic acid and washing with performic acid |
| 12/05/2000 | US6156155 Method for the delignification of lignocellulosic material by adding a dialkyl substituted octahydroanthraquinone |
| 12/05/2000 | CA2122608C Liquid reservoir |
| 11/28/2000 | US6153052 Pulping process |
| 11/22/2000 | EP1053367A1 A pulping composition and process using aminoalkoxylsilanes |
| 11/21/2000 | CA2171681C Improved pulping process |
| 11/16/2000 | WO2000068494A1 Method for producing paper pulp, lignins, sugars and acetic acid by fractionation of lignocellulosic vegetable material in formic/acetic acid medium |