| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 05/15/2013 | CN103103845A Technologies for extracting cellulose from biomass raw material and preparing biochar |
| 05/15/2013 | CN101688361B Method to remove hemicellutose from cellutosic fibres using a solution of ammonia and hydrogen peroxide |
| 05/08/2013 | EP2588665A1 Bleaching of pulp |
| 05/08/2013 | CN202925371U Screw for press master |
| 05/08/2013 | CN103097607A The use of acidic water in the manufacture of paper |
| 05/08/2013 | CN103088686A Technology for preparing paper pulp and coproducing biochar from lignocellulose biomass |
| 05/08/2013 | CN103088683A Clean pulping process with waste needle-leaved wood material |
| 05/07/2013 | US8435345 Internally curing cement based materials |
| 05/02/2013 | WO2013063356A2 Method and composition for enzymatic treatment of fiber for papermaking, and paper products made therewith |
| 05/02/2013 | WO2013061266A1 Process for producing a dispersion comprising nanoparticles and a dispersion produced according to the process |
| 05/02/2013 | US20130105100 Method And Composition For Enzymatic Treatment Of Fiber For Papermaking, And Paper Products Made Therewith |
| 05/02/2013 | CA2853478A1 Method and composition for enzymatic treatment of fiber for papermaking, and paper products made therewith |
| 05/01/2013 | CN202913292U Equipment for washing and dewatering paper making raw materials |
| 05/01/2013 | CN103080420A Emulsions for removal and prevention of deposits |
| 05/01/2013 | CN103080416A Process for obtaining tall oil from a sodium sesquisulfate solution |
| 05/01/2013 | CN103080415A Bleaching of pulp |
| 05/01/2013 | CN103074795A Method for controlling secondary stickies through lipase |
| 05/01/2013 | CN103074790A Comprehensive utilization process of biomass raw material |
| 04/30/2013 | CA2591985C A modified sorptive lignocellulosic fibre material, preparation and use thereof and method for decontamination of fluid and aqueous media |
| 04/25/2013 | US20130102671 Perhydrolase variant providing improved specific activity |
| 04/25/2013 | US20130102670 Perhydrolase variant providing improved specific activity |
| 04/25/2013 | US20130102669 Perhydrolase variant providing improved specific activity |
| 04/25/2013 | US20130102668 Perhydrolase variant providing improved specific activity |
| 04/25/2013 | US20130102667 Perhydrolase variant providing improved specific activity |
| 04/25/2013 | US20130102666 Perhydrolase variant providing improved specific activity |
| 04/25/2013 | US20130102665 Perhydrolase variant providing improved specific activity |
| 04/25/2013 | US20130102664 Perhydrolase variant providing improved specific activity |
| 04/25/2013 | US20130098571 Chemical activation and refining of southern pine kraft fibers |
| 04/25/2013 | DE102011116605A1 Entwässerungssieb Dewatering |
| 04/24/2013 | CN103061198A Cotton stalk pulping device and application method thereof |
| 04/24/2013 | CN103061185A Chloride-free bleaching method for paper pulp |
| 04/24/2013 | CN103061183A Pulping process of waste paper deinking pulp for furnishing high-grade printing paper |
| 04/24/2013 | CN103061182A Enzymatic clean production method of straw spinning pulp |
| 04/24/2013 | CN103061179A Comprehensive utilization process for lignocellulose biomass |
| 04/24/2013 | CN103060290A Alkaline xylanase, its coding gene and application |
| 04/24/2013 | CN103055581A Vacuum collecting device for multiple-disk filter |
| 04/24/2013 | CN102197174B Method for manufacturing papermaking pulp |
| 04/24/2013 | CN102182086B Method for preparing bamboo pulp by full-liquid-phase prehydrolysis sulfate displacement cooking process |
| 04/18/2013 | WO2013055284A1 Device for preventing rewetting of cellulose pulp |
| 04/18/2013 | CA2851609A1 Device for preventing rewetting of cellulose pulp |
| 04/17/2013 | EP2580389A1 Method of manufacturing pulp for corrugated medium |
| 04/17/2013 | CN202881749U Energy-saving and emission-reducing impeller type double-cone washing drum |
| 04/17/2013 | CN103046426A Pulping method of semi-chemical pulp made from reed |
| 04/17/2013 | CN103046417A Coated white board pulping process low in energy consumption |
| 04/17/2013 | CN102363928B Clean pulp preparation process using reaction of KOH and H2O2 |
| 04/17/2013 | CN101851873B Manufacturing method of environment-friendly copying paper |
| 04/17/2013 | CN101680172B Methods to control organic contaminants in fibers |
| 04/11/2013 | WO2013051995A1 Pulp distribution device |
| 04/11/2013 | CA2850724A1 Pulp distribution device |
| 04/10/2013 | CN103031770A Method for preparing nanocellulose whisker by utilizing abandoned mulberry bark |
| 04/10/2013 | CN103031765A Method and device for process temperature control in material preparation cycle by using heat pump |
| 04/10/2013 | CN103031764A Method for preparing paper pulp with raw biomass material and co-producing biochar |
| 04/10/2013 | CN103031763A Comprehensive utilization technology of biomass raw materials |
| 04/10/2013 | CN101802300B Device for dewatering of pulp |
| 04/10/2013 | CN101460676B Bleaching process of chemical pulp |
| 04/04/2013 | WO2013044347A1 Method for preparing nonwood fiber paper |
| 04/04/2013 | US20130081768 Catalytic carboxylation of cellulose fibers in a continuous process with multiple additions of catalyst, secondary oxidant and base to a moving slurry of cellulose fibers |
| 04/03/2013 | EP2574633A1 Catalytic carboxylation of cellulose fibers in a continous process with multiple additions of catalyst, secondary oxidant and base to a moving slurry of cellulose fibers |
| 04/03/2013 | CN103025950A Method for the production of oxidized cellulose fibers, oxidized cellulose fiber sheet materials or oxidized cellulose nonwovens, and use thereof |
| 04/03/2013 | CN103025813A Strong nanopaper |
| 04/03/2013 | CN103025414A A method and a reactor for mixing one or more chemicals into a process liquid flow |
| 03/30/2013 | CA2789840A1 Catalytic carboxylation of cellulose fibers in a continuous process with multiple additions of catalyst, secondary oxidant and base to a moving slurry of cellulose fibers |
| 03/28/2013 | US20130078695 Pretreatment Method for Producing Water-Soluble Sugars From Lignocellulosic Material |
| 03/27/2013 | CN103003493A A process for the production of a composition comprising fibrillated cellulose and a composition |
| 03/27/2013 | CN103003489A Composition containing a multivalent cationic metal and amine-containing anti-static agent and methods of making and using |
| 03/27/2013 | CN103003488A Process for preparing fluff pulp sheet with cationic dye and debonder surfactant and fluff pulp sheet made from same |
| 03/27/2013 | CN102995478A Bleaching method for preparing high quality low pollution bamboo wood dissolving slurry |
| 03/27/2013 | CN102171393B Press washer for washing cellulose pulp |
| 03/27/2013 | CN101864687B Reed pulp bleaching technology |
| 03/27/2013 | CN101451324B Pulp and black liquor prepared by grass type raw material, preparation method and use thereof |
| 03/26/2013 | CA2641607C Method for the manufacturing of microfibrillated cellulose |
| 03/20/2013 | EP2569483A1 A process for the production of a composition comprising fibrillated cellulose and a composition |
| 03/20/2013 | EP2569481A1 Freeness of paper products |
| 03/20/2013 | CN102337688B Mixed pulp used for producing viscose fiber and its production process |
| 03/20/2013 | CN102251429B Colored kraft paper and production method thereof |
| 03/20/2013 | CN102182089B Short fiber food waste residue-based nano cellulose and preparation method thereof |
| 03/19/2013 | CA2671826C A process in a (d) stage bleaching of softwood pulps in a presence of mg(oh)2 |
| 03/19/2013 | CA2669032C An improved bleaching process with at least one extraction stage |
| 03/19/2013 | CA2573035C Method for removing lignin from water |
| 03/15/2013 | CA2784379A1 Ultraviolet irradiation device |
| 03/15/2013 | CA2782309A1 Oxygen treatment of water and pulp from paper or cardboard production |
| 03/14/2013 | WO2013000074A9 Catalytic biomass conversion |
| 03/14/2013 | US20130062026 Process for producing bleached pulp |
| 03/14/2013 | CA2784380A1 Ultraviolet irradiation apparatus |
| 03/13/2013 | CN202786925U Belt-type pulp washer with dual pressure areas |
| 03/13/2013 | CN102971460A Control of enzymes in the production of pulp |
| 03/13/2013 | CN102965993A Waste paper pulp dehydration method |
| 03/13/2013 | CN101184891B Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with a reinforcing frame |
| 03/12/2013 | CA2494398C Grooved pyramid disperger plate |
| 03/07/2013 | WO2013033397A1 Pulp composition |
| 03/07/2013 | WO2013029764A2 Improving the drainage of an aqueous composition |
| 03/07/2013 | WO2013029171A1 Process for recovering salt during a lignocellulosic conversion process |
| 03/07/2013 | US20130056165 Process for fibrillating lignocellulosic material, fibres and their use |
| 03/07/2013 | CA2846646A1 Pulp composition |
| 03/07/2013 | CA2845475A1 Improving the drainage of an aqueous composition |
| 03/07/2013 | CA2844420A1 Process for recovering salt during a lignocellulosic conversion process |
| 03/06/2013 | EP2565326A1 Contamination inhibitor composition |
| 03/06/2013 | EP2564932A1 Method of reducing biological overgrowth or rot or decay in a composite |
| 03/06/2013 | EP2564931A1 Fibrous materials and composites |
| 03/06/2013 | EP2564913A1 Disc filter |