| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 09/25/2002 | EP1242677A1 Pulping process for corn stover and other nonwood fibrous materials |
| 09/25/2002 | EP1242676A1 Method and apparatus for washing fibre pulp mixture |
| 09/25/2002 | EP1242675A1 Pulp washing method and plant |
| 09/25/2002 | EP1242128A1 Superabsorbent polymers |
| 09/25/2002 | EP1044299B1 Improved fluffed pulp and method of production |
| 09/25/2002 | CN1371439A Pulping process for corn stover and other nonwood fibrous materials |
| 09/24/2002 | US6455661 Papermaking additives and mechanical pulp with primary amino groups |
| 09/24/2002 | US6454900 Controlling tempertaure, pressure |
| 09/19/2002 | WO2002072951A2 Method for treating pulp with water insoluble chemical additives |
| 09/19/2002 | WO2002072946A2 Method for applying chemical additives to pulp during the pulp processing and products made by said method |
| 09/19/2002 | WO2002072499A2 Fiber reinforced cement composite materials using chemically treated fibers with improved dispersibility |
| 09/19/2002 | US20020129912 Delignifying chips of a lignocellulosic material in a sulfite pulping; bleaching fibrous material which is performed exclusively with chlorine-free reagents and comprises bleaching with oxidant in presence of base |
| 09/18/2002 | EP1240389A1 Method for modifying cellulose-based fiber material |
| 09/18/2002 | EP1240385A1 Oxidised white liquor in an oxygen delignification process |
| 09/18/2002 | EP1240384A1 Electrochemical method for determinating lignin content of pulp |
| 09/18/2002 | EP1082486B1 Oxidase process for pulp and dye oxidation |
| 09/12/2002 | WO2002070816A2 Electrical field apparatus and methods for fluid for decontamination and other purposes |
| 09/12/2002 | US20020124980 Inhibition of pulp and paper yellowing using nitroxides, hydroxylamines and other coadditives |
| 09/12/2002 | US20020124977 Device for distributing cellulose pulp of low and medium consistency in order to form a uniform pulp web |
| 09/11/2002 | EP1238142A1 Method of making carboxylated cellulose fibers and products of the method |
| 09/11/2002 | EP1238141A1 Fibers from plant seeds and use |
| 09/11/2002 | EP1238140A1 Cellulose fiber-based compositions and their method of manufacture |
| 09/11/2002 | EP1165881B1 Multi-component system for the enzyme-catalysed oxidation of substrates and method for carrying out enzyme-catalysed oxidation |
| 09/11/2002 | CN1090700C Method for producing toilet paper and paper product from coarse fiber and product product by the method |
| 09/10/2002 | US6447644 Inhibition of pulp and paper yellowing using nitroxides, hydroxylamines and other coadditives |
| 09/10/2002 | CA2197312C Enhancements in pulping with dissolved solids control |
| 09/10/2002 | CA2079442C A process using cellulase for improving drainage properties of pulp |
| 09/05/2002 | US20020121352 Electrical field apparatus and methods for fluid for decontamination and other purposes |
| 09/03/2002 | US6444314 High hemicellulose content of at least 5%, a low lignin content as measured by a kappa number less than 2.0; enhanced dye-binding properties and a reduced tendency to fibrillate. |
| 09/03/2002 | CA2157109C Method of bleaching pulp with chlorine-free chemicals |
| 08/29/2002 | US20020117276 Bleaching and delignifying cellulose using caroate/caro's acid and production of same |
| 08/28/2002 | EP0716702B1 Thermostable xylanases |
| 08/27/2002 | US6441240 Mixing with ethyleneamine |
| 08/27/2002 | US6440547 Lyocell film made from cellulose having low degree of polymerization values |
| 08/27/2002 | US6440523 Lyocell fiber made from alkaline pulp having low average degree of polymerization values |
| 08/27/2002 | US6440476 Method to improve quality and appearance of leafy vegetables by using stabilized bromine |
| 08/27/2002 | US6440265 FRP hood for paper processing plant |
| 08/27/2002 | CA2373562A1 Eop & ep process for bleaching of chemical pulp |
| 08/22/2002 | US20020115181 Enzymatic polypeptide for use in paper making and animal feeds |
| 08/22/2002 | US20020114757 Chemical composition and method |
| 08/22/2002 | US20020112827 Method and apparatus for reducing impurities in cellulose fibers for manufacture of fiber reinforced cement composite materials |
| 08/20/2002 | US6436238 Alkaline fine papermaking at neutral ph using chemical and mechanical pulps; high conductivity stabilization of wet end and enhanced water removal |
| 08/20/2002 | US6436232 Precipitating calcium carbonate in situ from calcium hydroxide and carbon dioxide in medium consistancy pulp; higher content and retention |
| 08/20/2002 | US6436231 Preparing individual treated fibers from mat; curing with such as citric acid; themobonding agent such as bicomponent core and sheath of polypropylenes with different melting points; high wet strength web; absorbent |
| 08/20/2002 | CA2168288C Bleaching compositions comprising sulfamates and borates or gluconates and processes |
| 08/15/2002 | US20020108729 First stage of oxygen delignification at first temperature and pressure, then second stage at a higher pressure and temperature; increased selectivity |
| 08/14/2002 | EP1230456A4 Cellulose ethers and method of preparing the same |
| 08/14/2002 | EP1230456A1 Cellulose ethers and method of preparing the same |
| 08/14/2002 | EP1230374A2 Modification of polysaccharide containing materials |
| 08/14/2002 | EP0832321B1 Drum supported by support rollers for washing fibre material |
| 08/14/2002 | EP0767849B1 Production of soft paper products from old newspaper |
| 08/14/2002 | EP0757661B1 Method and plant for producing hydrogen peroxide |
| 08/14/2002 | CN1364207A Method and apparatus for washing fibre pulp mixture |
| 08/13/2002 | US6432689 Alkaliphilic and thermophilic microorganisms and enzymes obtained therefrom |
| 08/13/2002 | US6432266 Bleaching chemical pulp for paper manufacturing comprising delignifying and bleaching chemical pulp which has been treated by cooking |
| 08/13/2002 | US6432263 Process for increasing the water retention capacity in fibrous webs |
| 08/13/2002 | US6432262 Stabilizing hydrogen peroxide in an aqueous solution by adding an aldehyde donor such as a methylolhydantoin; inhibits degradation by catalase |
| 08/08/2002 | US20020104627 Bleaching process |
| 08/07/2002 | EP1229164A2 Device for distributing cellulose pulp of low and medium consistency in order to form a uniform pulp web |
| 08/07/2002 | EP1228099A1 Oxidized polysaccharides and products made thereof |
| 08/07/2002 | CN2504307Y Non-skid long net wash engine |
| 08/07/2002 | CN1088775C Improved method of softening pulp and products produced by the same |
| 08/06/2002 | US6428653 Exposing the pulp to a reducing agent to eliminate residual peroxide compound from the pulp and then final bleaching the pulp by exposing the pulp to formamidinesulfinic acid. |
| 08/01/2002 | WO2002059418A1 Device for dewatering and washing of a fibrous suspension |
| 07/31/2002 | EP1226179A1 Treatment of pulp to produce microcrystalline cellulose |
| 07/31/2002 | CN2503106Y Pulp black liquor extraction machine |
| 07/31/2002 | CN1088481C Paper-pulp producing process |
| 07/30/2002 | CA2265728C Treatment of chlorine dioxide generator effluent and feed streams with fixed-resin bed |
| 07/25/2002 | WO2002057541A2 Use of xylanase in pulp bleaching |
| 07/25/2002 | WO2002057540A1 Microcrystalline cellulose manufacture |
| 07/25/2002 | US20020098317 Oxidized cellulose-containing fibrous materials and products made therefrom |
| 07/25/2002 | US20020096293 Proteins and polymers for use as pitch and stickies control agents in pulp and papermaking processes |
| 07/25/2002 | US20020096276 Absorbent products and methods of preparation thereof |
| 07/25/2002 | US20020096274 Contacting cellulose fibers with a supercritical fluid to create an extract of the wood extractives, removing the extract from the fibers so as to obtain improved cellulose fibers with reduced content of extractives |
| 07/25/2002 | US20020095956 Plate diffuser for treating comminuted cellulosic fibrous material |
| 07/25/2002 | DE10064131A1 Vollgebleichter Sulfit-Zellstoff, Verfahren zu seiner Herstellung und daraus hergestellte Produkte Vollgebleichter sulfite pulp, process for its production and products made from |
| 07/25/2002 | CA2435279A1 Use of xylanase in pulp bleaching |
| 07/24/2002 | CN1360651A Cellulose ethers and method of preparing same |
| 07/23/2002 | US6423183 Paper products and a method for applying a dye to cellulosic fibers |
| 07/18/2002 | WO2002055679A2 Thermostable lipolytic enzyme variant |
| 07/18/2002 | US20020092636 Pulp suspension is fed with calcium carbonate, calcium oxide, and/or calcium hydroxide to react with carbon dioxide; crystal structure; for paper/cardboard production |
| 07/17/2002 | EP1223245A2 Process for cleaning a pulp of primary fibres |
| 07/16/2002 | US6419792 Photocatalytic pulp composition |
| 07/16/2002 | US6419786 Dispersing zone; dehydration, pretreatment, supplying steam |
| 07/11/2002 | US20020090332 For use in a paper-making machine |
| 07/11/2002 | US20020088575 Mixing an aqueous suspension of papermaking fibers hydrolytic enzyme(s) capable of randomly hydrolyzing cellulose and/or hemicellulose; improved sheet strength |
| 07/11/2002 | US20020088574 Adding N,N-dialkylhydroxylamines, an ester, an amide or thio substituted N,N-dialkylhydroxylamine or N,N-dialkylhydroxylamine or N,N-dibenzylhydroxyamine, or salts to prevent loss of brightness in pulp or paper |
| 07/11/2002 | US20020088572 Process for making lyocell fibers from alkaline pulp having low average degree of polymerization values |
| 07/11/2002 | US20020088571 Method and apparatus for treating pulp |
| 07/11/2002 | US20020088570 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 |
| 07/11/2002 | US20020088567 Method and apparatus for treating pulp |
| 07/11/2002 | US20020088566 Method of chemically loading fibers in a fiber suspension |
| 07/10/2002 | EP1220963A1 Method for minimising the new water use in the water circulation system of a treatment plant |
| 07/10/2002 | EP1049906B1 Method and apparatus for cooling and heating a fiber suspension |
| 07/10/2002 | EP0889997B1 Paper products having wet strength from aldehyde-functionalized cellulosic fibers and polymers |
| 07/10/2002 | CN1357666A Two-net washing and starching machine |
| 07/09/2002 | US6416214 Mixing device |
| 07/09/2002 | CA2231551C Supply of washing liquid in a fractionating multi-stage washer |
| 07/09/2002 | CA2167922C A method of integrating bleaching and recovery in the production of pulp |
| 07/04/2002 | WO2002052101A1 Fully bleached sulfite chemical pulp, a process for the production thereof and products derived therefrom |