| Patents for D21C 3 - Pulping cellulose-containing materials (5,020) |
|---|
| 05/21/2003 | CN1109160C Batch process for preparing improved kraft pulp |
| 05/20/2003 | CA2224685C Method and apparatus for treating pulp in an indirect heat exchanger after pulping |
| 05/20/2003 | CA2072479C Batch process for preparing kraft pulp |
| 05/14/2003 | CN1417407A Room temperature ionic liquid containing unsaturated double bond and its prepn and application |
| 05/14/2003 | CN1417406A Organic solvent recovering and lignin separating paper pulp making technology |
| 05/14/2003 | CN1108401C Pulp containing cellulose and moulded product made from the same |
| 05/13/2003 | US6562191 Adjusting the hemicellulose content of pulp |
| 05/13/2003 | CA2088026C Apparatus and method of controlling a position of rotor in a high pressure feeder |
| 05/08/2003 | US20030085008 Methods to enhance pulp bleaching and delignification |
| 05/07/2003 | EP1308555A2 Dissolved solids control in pulp production |
| 05/07/2003 | EP1308554A2 Dissolved solids control in pulp production |
| 05/07/2003 | EP0862669B1 Continuous digester |
| 05/06/2003 | CA2220335C A process for rapid acid hydrolisis of lignocellulosic material and hydrolisis reactor |
| 05/02/2003 | EP0730653B1 Arabinoxylan degrading enzymes |
| 04/29/2003 | CA2282238C Pulping process |
| 04/24/2003 | US20030075290 Effective amount of selected phosphonates or phosphonate blends is admixed with black liquor composition recovered from digester in chemical pulping process; suited for Kraft pulping process |
| 04/23/2003 | CN1412092A Modified stalk material and its application |
| 04/22/2003 | US6551452 Process for digesting woodchips and digester additives |
| 04/17/2003 | DE10145338C1 Verfahren zum Abtrennen von Hemicellulosen aus hemicellulosehaltiger Biomasse A method for separating hemicelluloses from hemicellulose-containing biomass |
| 04/16/2003 | EP0698139B1 Dissolved solids control in pulp production |
| 04/16/2003 | CN1410627A Production technology of pure natural antibacterial bamboo paste |
| 04/16/2003 | CN1410626A Production technology of pure natural antibacterial bamboo paste |
| 04/16/2003 | CN1105802C Diwei self-catalyzing alcohol process for pulping |
| 04/16/2003 | CN1105801C Middle-and high-grade stationery paper made of rice straw pulp and its making process |
| 04/15/2003 | US6548558 Reuse of paper, paperboard |
| 04/10/2003 | WO2002059417A3 Heat treatment of polysulphide containing white liquors |
| 04/09/2003 | EP1299595A1 Method for preparing pulp from cornstalk |
| 04/09/2003 | CN1409783A Method for reducing and/or avoiding build up of wood components |
| 04/09/2003 | CN1408942A Pulping technology for paper-making by biological dry steaming without black liquor and pollution |
| 04/08/2003 | US6544384 Deaerating comminuted cellulosic fibers and soaking in an alkaline liquid heated to a temperature such that if any acid is formed, the reactions take place slowly enough to be neutralized by the alkali and not damage the fibers |
| 04/02/2003 | CN1407171A Bamboo fibre process |
| 04/02/2003 | CN1104524C Dissovlved solids control in pulp production |
| 03/27/2003 | WO2003025280A1 Method for separating hemicelluloses out of biomass that contains hemicelluloses |
| 03/20/2003 | WO2003023043A1 Laccase activity enhancers |
| 03/20/2003 | WO2003002813A3 Method for delignifying lignocellulosic raw materials |
| 03/20/2003 | WO2002075042A3 Method for separating hemicelluloses from a biomass containing hemicelluloses |
| 03/18/2003 | US6533896 Method for the production of precleaned pulp |
| 03/12/2003 | EP1290271A1 Method for regulating a process for manufacturing paper pulp by measuring the amount of hexenuronic acid optically |
| 03/12/2003 | CN1402803A Fibers from plant seeds and use |
| 03/12/2003 | CN1102974C Multi component system for modifying, degrading or bleaching lignin, lignin containing materials and processes for its use |
| 03/12/2003 | CN1102973C Production of prehydrolyzed pulp |
| 03/06/2003 | US20030041985 Method for producing pulp |
| 03/06/2003 | US20030041982 Nitration, separation; fermentation to ethanol |
| 03/04/2003 | US6528163 Lyocell fiber from sawdust pulp |
| 02/27/2003 | WO2001088236A3 Alkaline pulp having low average degree of polymerization values and method of producing the same |
| 02/27/2003 | US20030037892 Preparation of chemical pulp and xylose, utilizing a direct acid hydrolysis on the pulp |
| 02/26/2003 | EP1285110A1 Lyocell fibers |
| 02/20/2003 | WO2002099184A3 Method and aqueous composition for the production of improved pulp |
| 02/19/2003 | CN1397683A Middle-or low-pressure exposion method for making pulp with broad-leaf wood |
| 02/18/2003 | US6521084 Reacting fibrous materials with chemical digesting solution in presence of organosilicon compounds selected from specified organopolysiloxane compounds or organosilane compounds to produce pulp |
| 02/06/2003 | US20030025252 Process for making lyocell fiber from sawdust pulp |
| 02/06/2003 | US20030025251 Pumping raw materials in digester; alkalinity solutions |
| 02/05/2003 | CN1395002A Pulp-making process using biological fermentation method |
| 02/05/2003 | CN1100915C Method for recovery of formic acid |
| 02/04/2003 | US6514613 Molded bodies made from compositions having low degree of polymerization values |
| 01/30/2003 | WO2003008703A1 Four stage alkaline peroxide mechanical pulping |
| 01/28/2003 | US6511930 Lyocell fibers having variability and process for making |
| 01/28/2003 | CA2225023C Method and apparatus for treating pulp in an indirect heat exchanger in connection with bleaching |
| 01/23/2003 | WO2003006737A1 Process for producing pulp |
| 01/23/2003 | US20030015305 Raw material for printing paper, a method for producing said raw material and a printing paper |
| 01/22/2003 | CN1099500C Method for producing chlorine-free bleached pulp, paper and paper board by using hemp stem |
| 01/22/2003 | CN1099499C Potassium hydroxide method of straw pulp paper making process |
| 01/22/2003 | CN1099498C Method for producing anti-rust raw paper by using waste ramie |
| 01/16/2003 | WO2003004765A1 Non-woody celulose masses and their production method |
| 01/16/2003 | US20030010458 Method for inhibiting calcium salt scale |
| 01/14/2003 | US6506283 Pretreatment of chips before cooking |
| 01/09/2003 | WO2003002813A2 Method for delignifying lignocellulosic raw materials |
| 01/09/2003 | US20030006016 Refining wood raw material, and screening in a plurality of stages into regect and accept portions to form a ready made stock having a freeness value of 30-70 ml at a consistency of >/= 10% |
| 01/08/2003 | EP1272705A1 Method for controlling the cooking temperature in a continuous vapour phase digester |
| 01/08/2003 | EP0961851B1 Process for producing fibrous materials with improved properties |
| 01/08/2003 | CN1098390C Method of producing a pulp of cellulosic material |
| 01/02/2003 | US20030000660 Method for controlling the cooking temperature in a continuous vapour phase digester |
| 01/02/2003 | EP1268924A1 Method for avoiding mechanical damage of pulp |
| 01/01/2003 | CN1388287A Chemical treatment and hot pulping process of wood pulp and dreg pulp with mechanical mill and stone mill |
| 12/18/2002 | EP1266078A1 Raw material for printing paper, method to produce it and printing paper |
| 12/18/2002 | EP1266072A1 Raw material for printing paper, method to produce it and printing paper |
| 12/18/2002 | CN1385580A Pulping using bark of artificial quickly-grown Common Papermulberry (HAP method) and trunk (APMP method) |
| 12/18/2002 | CN1385287A Bamboo pulp denatured productive technology |
| 12/12/2002 | WO2002099184A2 Method and aqueous composition for the production of improved pulp |
| 12/12/2002 | WO2002098803A1 Method for inhibiting calcium salt scale |
| 12/12/2002 | WO2002098802A1 Method for inhibiting calcium salt scale |
| 12/12/2002 | CA2447559A1 Method for inhibiting calcium salt scale |
| 12/11/2002 | CN1384241A Low pressure herbal material blasting pulp making process |
| 12/11/2002 | CN1383965A Process for production of LYOCELL fiber with bamboo material |
| 12/10/2002 | US6491788 Process for making lyocell fibers from alkaline pulp having low average degree of polymerization values |
| 11/27/2002 | CN1381620A Viscose rayon made of bamboo and its preparing process |
| 11/26/2002 | CA2169108C Continuous cooking with white liquor pretreatment |
| 11/21/2002 | DE10123665A1 Recovery of cellulose from ligno-cellulosics, exposes hot pulped material to hydrogen peroxide and transition metal oxidation catalyst |
| 11/14/2002 | WO2002090648A1 Feeding arrangement for feeding of chips to chip bins |
| 11/07/2002 | WO2002088461A1 Method for supplying washing liquid to a process for cooking cellulose pulp |
| 11/07/2002 | WO2002088460A1 Methods to enhance pulp bleaching and delignification |
| 11/07/2002 | CA2443340A1 Methods to enhance pulp bleaching and delignification |
| 11/05/2002 | US6475339 Method for rapidly determining a pulp kappa number using spectrophotometry |
| 11/05/2002 | US6475338 Method of minimizing transition metal ions during chemical pulping in a digester by adding chelating agent to the digester |
| 11/05/2002 | EP1177037A4 Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics |
| 11/05/2002 | CA2069281C Multi-level sulfide content pulping |
| 10/31/2002 | WO2002086206A1 Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same |
| 10/31/2002 | US20020160186 Meltblown process with mechanical attenuation |
| 10/30/2002 | EP1252388A2 Method for reducing and/or avoiding the build up of wood components |
| 10/29/2002 | US6471727 Hemicellulose; dye binding efficiency |