| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 07/12/2011 | CA2624431C Domestic compositions comprising cationic polymer latex |
| 07/07/2011 | WO2011008289A3 Industrial cleaning compositions and methods for using same |
| 07/06/2011 | EP2176461B1 Process for making paper and use of an acid/base treatment in papermaking |
| 07/06/2011 | CN101831820B Method for producing white pine and poplar chemical and mechanical paper pulp |
| 07/06/2011 | CN101698986B Method of preparating papermaking wood pulp at normal pressure by deoxidizing and leaching method |
| 07/06/2011 | CN101328692B Paper pulp fabrication process and system |
| 07/06/2011 | CN101189389B Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with seal removing means |
| 07/06/2011 | CN101184892B Arrangement for treatment of cellulose pulp |
| 07/05/2011 | CA2605706C Ligno cellulosic materials and the products made therefrom |
| 06/30/2011 | WO2011078775A1 Method and arrangement for improving a washing step after completed cooking in a continuous digester |
| 06/30/2011 | US20110155335 Use of polysulfide in modified cooking |
| 06/29/2011 | CN102108649A Waste paper deinking process method |
| 06/29/2011 | CN102108645A Recovery processing process for heat transfer printing paper |
| 06/29/2011 | CN102108644A Pollution-free production process of plant fiber pulp |
| 06/29/2011 | CN101701429B Method for improving yield and viscosity of gum wood pulp under condition of stewing mild sulfate |
| 06/29/2011 | CN101694075B Low energy consumption clean paper pulp extracting method and papermaking process thereof |
| 06/28/2011 | US7967948 Treating the wood pulp with an optical brightening agent in the presence of bleaches other than chlorine-based bleaches but rather oxidative bleaches; mechanical pulp having high ISO brightness levels and/or whiteness without adversely impacting mechanical pulp bulk and/or opacity; papermaking |
| 06/23/2011 | WO2011075041A1 Drum and apparatus for processing cellulose-containing pulp, where rewetting is prevented, and method for manufacturing the drum |
| 06/23/2011 | WO2011072718A1 Pulping process |
| 06/22/2011 | EP2334866A1 A method for manufacturing mechanical pulp and a use of the mechanical pulp |
| 06/22/2011 | CN1710197B Colour-changeable fiber anticounterfeit paper |
| 06/22/2011 | CN101736574B Composite tea saponin, preparation method thereof and use thereof |
| 06/22/2011 | CN101158122B Bamboo dissolved pulp manufacturing technique |
| 06/21/2011 | CA2372069C Process for bleaching chemical pulps with low organic halogen compounds content |
| 06/15/2011 | EP2333152A1 Device and method for cleaning of a filter net of a pulp dryer's fan tower, a pulp dryer's fan tower and a pulp dryer |
| 06/15/2011 | EP2331856A1 Sealing arrangement and apparatus for treating cellulose pulp |
| 06/15/2011 | EP2331747A1 An apparatus for washing and/or dewatering pulp |
| 06/15/2011 | EP2331746A1 An apparatus for washing and/or dewatering pulp |
| 06/15/2011 | EP1891265B9 Method for treating a process material with large surface plasma |
| 06/15/2011 | CN101550661B Impeller-type paper pulp sparger at bottom of upward flow bleaching tower |
| 06/15/2011 | CN101545228B Discharging method of medium-consistency oxygen reaction tower and discharging pump device thereof |
| 06/15/2011 | CN101381970B Method for co-producing paper pulp and fuel ethanol by wild grass on forest land |
| 06/15/2011 | CN101255670B Exquisite kraft paper and producing method thereof |
| 06/14/2011 | US7960520 Conversion of lignocellulosic biomass to chemicals and fuels |
| 06/09/2011 | WO2011067750A1 A sponge with an inner soap capsule |
| 06/09/2011 | WO2011017532A3 Process for applying composition containing a cationic trivalent metal and debonder and fluff pulp sheet made from same |
| 06/09/2011 | US20110136908 Perhydrolase providing improved peracid stability |
| 06/08/2011 | EP1090183B1 A method of producing a fiber product |
| 06/08/2011 | CN201857551U Black liquor separator for papermaking and pulping |
| 06/08/2011 | CN1886556B Cross-linked cellulose fibers and method of making same |
| 06/08/2011 | CN102086604A Method for bleaching alkaline wheat straw pulp with medium-concentration DEP (diethyl phthalate) |
| 06/08/2011 | CN101451326B Un-bleaching pulp prepared by ammonium sulfite steam cooking wheat straw raw material, preparation method and use thereof |
| 06/08/2011 | CN101265608B Bleaching and heating process and bleaching heating equipment in cellulose viscose pulp production |
| 06/07/2011 | CA2599033C Method for determining chemical pulp kappa number with visible-near infrared spectrometry |
| 06/07/2011 | CA2232245C Cellulases, the genes encoding them and uses thereof |
| 06/03/2011 | WO2011064447A1 Method of treating liquid flows at a chemical pulp mill |
| 06/03/2011 | WO2011064441A1 Method for manufacturing nanofibrillated cellulose pulp and use of the pulp in paper manufacturing or in nanofibrillated cellulose composites |
| 06/03/2011 | WO2011017522A3 Dry fluff pulp sheet additive |
| 06/02/2011 | US20110129886 Biorefinery Process for Extraction, Separation, and Recovery of Fermentable Saccharides, other Useful Compounds, and Yield of Improved Lignocellulosic Material from Plant Biomass |
| 06/01/2011 | EP2326766A1 Pulping additives for a reduction of resin from kraft pulp |
| 06/01/2011 | CN102080070A Novel endoglucanases |
| 05/31/2011 | US7951267 Enzymatic hydrolysis of a polymer comprising vinyl acetate monomer |
| 05/31/2011 | US7951263 Method and apparatus for treating pulp |
| 05/26/2011 | WO2010138941A3 Modified cellulose from chemical kraft fiber and methods of making and using the same |
| 05/25/2011 | EP1322814B8 Method for bleaching paper pulp |
| 05/25/2011 | CN201843018U Charging device |
| 05/25/2011 | CN102071586A Method for changing pencil sawdust into recycled paper |
| 05/24/2011 | CA2443901C Cross-linked pulp and method of making same |
| 05/19/2011 | WO2011059398A1 Strong nanopaper |
| 05/19/2011 | WO2011059376A1 Method of producing pulp from lignocellulosic material containing silica |
| 05/19/2011 | US20110117319 Nanofiber sheet and method for manufacturing the same |
| 05/19/2011 | CA2780478A1 Strong nanopaper |
| 05/18/2011 | CN201835174U Pulp ozone bleaching experimental apparatus with stirrer |
| 05/18/2011 | CN201835173U Volumetric intermittent rinsing device |
| 05/18/2011 | CN102066655A Cooling of a cellulose pulp web |
| 05/18/2011 | CN102061638A Process for catalytically bleaching pulp by acetate/persulfate |
| 05/12/2011 | US20110108223 Method For Vapor Phase Pulping With Alcohol and Sulfur Dioxide |
| 05/11/2011 | EP1425247B1 Control of development of biofilms in industrial process water |
| 05/11/2011 | EP1244839B1 Sealing arrangement for a pulp dewatering arrangement |
| 05/11/2011 | CN1697877B Xylanases with enhanced thermophilicity and alkalophilicity |
| 05/11/2011 | CN102051835A Paper pulp extruding device |
| 05/11/2011 | CN102051832A Pulp concentration adjusting method of used paper recycling apparatus, pulp concentration adjusting device of used paper recycling apparatus, and used paper recycling apparatus |
| 05/11/2011 | CN101389808B A method for manufacturing mechanical pulp and paper products |
| 05/10/2011 | CA2569848C Pulp bleaching processes |
| 05/10/2011 | CA2493355C Cementitious material reinforced with chemically treated cellulose fiber |
| 05/04/2011 | CN102041702A Preparation method for co-producing bleached paper pulp, lignin carbon fibers and fuel ethanol |
| 05/04/2011 | CN102040709A Method for preparing bleaching bamboo pulp cellulose water absorbing material |
| 05/03/2011 | CA2576882C Composition and process for bleaching mechanical wood pulp |
| 04/27/2011 | EP2314761A1 Bleach activators for methods for bleaching cellulose fibres |
| 04/27/2011 | CN102031714A Production method of vinegar-grade bamboo pulp |
| 04/27/2011 | CN101048545B Method for treating cellulose fibres |
| 04/21/2011 | WO2011045740A2 Methods of photoprotecting a material against solar uv radiation using photonic particles; compositions |
| 04/21/2011 | WO2011044646A1 Process for producing differentiated cellulose fibers comprising an enzymatic treatment in association with an acid step |
| 04/21/2011 | CA2777801A1 Process for producing differentiated cellulose fibers comprising an enzymatic treatment in association with an acid step |
| 04/20/2011 | CN102027167A Method of bleaching pulp with ozone, chlorine dioxide and peroxide |
| 04/20/2011 | CN102020788A Cellulose pulp and production method thereof |
| 04/19/2011 | US7927496 Control of development of biofilms in industrial process water |
| 04/19/2011 | CA2439698C Fiber reinforced cement composite materials using chemically treated fibers with improved dispersibility |
| 04/14/2011 | WO2011044320A1 Process for producing alcohol and other bioproducts from biomass extracts in a kraft pulp mill |
| 04/14/2011 | WO2011042227A1 Method for producing wet-strengthened papers |
| 04/14/2011 | DE102009045628A1 Bleichaktivatoren für Verfahren zum Bleichen von cellulosischen Faserstoffen Bleach activators for process for bleaching cellulosic fiber materials |
| 04/13/2011 | CN102016174A Method for reduction of light-induced yellowing of lignin-containing material |
| 04/13/2011 | CN102016167A A distribution device for feeding of cellulose pulp |
| 04/13/2011 | CN102016166A Method and arrangement for improving the operation of sealing elements of a drum washer |
| 04/13/2011 | CN101725071B Chlorine dioxide multi-step bleaching method of linseed pulp |
| 04/13/2011 | CN101306860B Chlorine dioxide bleaching process for reducing content of organic chloride in waste water |
| 04/13/2011 | CN101269510B Manufacturing technique for whitening type middle, high-density pressed-fibre board |
| 04/06/2011 | EP2305881A1 Cellulose fibers crosslinked with low molecular weight phosphorous containing polyacrylic acid and method |
| 04/06/2011 | EP2304012A2 Catalysed peroxide bleach ("catalyst-bleach variant 3: all-in-one) |
| 04/06/2011 | EP2092114B1 Pitch and stickies control in pulp and papermaking processes |