| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 07/11/2012 | CN102559567A Construction of thermophilic endo-xylanase gene engineering strain and application of endo-xylanase of strain |
| 07/11/2012 | CN101586314B Mechanical method for making pulp by extruding sunflower stems |
| 07/10/2012 | US8216425 Absorbent sheet having regenerated cellulose microfiber network |
| 07/10/2012 | US8216423 Multi-stage AP mechanical pulping with refiner blow line treatment |
| 07/10/2012 | CA2510952C Cooking aid for improving the removal of extractives in pulp production, its production and use |
| 07/05/2012 | WO2012088619A1 Process for obtaining tall oil from a sodium sesquisulfate solution |
| 07/05/2012 | CA2804057A1 Process for obtaining tall oil from a sodium sesquisulfate solution |
| 07/04/2012 | EP2471985A1 Method and device for producing products from raw material pulp sheet |
| 07/04/2012 | EP2470715A1 Arrangement and method for washing cellulose pulp |
| 07/04/2012 | CN202298331U 高效浆液提取机 Efficient slurry extraction machine |
| 07/04/2012 | CN202298330U 一种中浓纸浆混合装置 A medium consistency pulp mixing device |
| 07/04/2012 | CN102535235A Bleached needle wood fluff pulp board and manufacturing method thereof |
| 07/04/2012 | CN102535217A Improved new bleached chemithermomechanical pulp (BCTMP) process |
| 07/04/2012 | CN102174494B Marine cryophilic endo beta-xylanase XynB as well as expressing gene xynB and application thereof |
| 07/04/2012 | CN102154886B Pretreatment process for cleaning and bleaching chemical mechanical pulp |
| 07/04/2012 | CN101806008B Pulping process for obtaining non-fibrous matters in dry mode without generating water |
| 07/04/2012 | CN101775749B Deinking, bleaching and treating process of waste paper |
| 06/28/2012 | WO2012087214A1 Method and arrangement for ameliorating the dewatering in a twin wire press |
| 06/28/2012 | WO2012085476A1 Process for delignification and bleaching of paper pulp using activated hydrogen peroxide |
| 06/28/2012 | WO2012085346A1 An integrated process system |
| 06/28/2012 | WO2012084842A1 Process for improving chlorine dioxide bleaching of pulp |
| 06/28/2012 | US20120160779 Control of development of biofilms in industrial process water |
| 06/28/2012 | CA2822330A1 An integrated process system |
| 06/28/2012 | CA2821954A1 Process for improving chlorine dioxide bleaching of pulp |
| 06/27/2012 | CN1993517B Improved composition and processes for paper production |
| 06/27/2012 | CN102517968A Method for preparing dissolving pulp used for viscose fiber by using mulberry twig stem core |
| 06/27/2012 | CN102517967A Preparation method for taxus chinensis fibre pulp |
| 06/27/2012 | CN102517944A Method for producing paper pulp through biodegrading lignin by white rot fungi |
| 06/27/2012 | CN101818460B Method for preparing wood dissolving pulp by modifying true color unbleached wood pulp |
| 06/27/2012 | CN101638865B Natural color copy paper and preparation method thereof |
| 06/27/2012 | CN101638863B Natural color food wrapper and preparation method thereof |
| 06/27/2012 | CN101451323B Un-bleaching pulp prepared by alkaline steam cooking wheat straw raw material, preparation method and use thereof |
| 06/26/2012 | CA2526406C Chemimechanical desilication of nonwood plant materials |
| 06/21/2012 | WO2012080579A1 Method and apparatus for the splitting of cellulosic fibers, methods for the treatment of fibrous pulps for a papermaking process, methods for paper drying and paper products with split fibers |
| 06/21/2012 | US20120156159 Perhydrolase variant providing improved specific activity |
| 06/21/2012 | US20120156158 Perhydrolase variant providing improved specific activity |
| 06/21/2012 | US20120156157 Perhydrolase variant providing improved specific activity |
| 06/21/2012 | US20120156156 Perhydrolase variant providing improved specific activity |
| 06/21/2012 | US20120156155 Perhydrolase variant providing improved specific activity |
| 06/21/2012 | CA2821871A1 Method and apparatus for the splitting of cellulosic fibers, methods for the treatment of fibrous pulps for a papermaking process, methods for paper drying and paper products with split fibers |
| 06/20/2012 | EP1883730B1 Process of bleaching |
| 06/20/2012 | CN202279990U 一种用于双网脱水机的网带纠偏装置 A twin-wire mesh belt dryer of corrective devices |
| 06/20/2012 | CN202279989U 一种高浓双网挤浆机 A highly concentrated TWP machine |
| 06/20/2012 | CN102505551A Method for alkaline hydrogen peroxide bleaching of paper pulp |
| 06/20/2012 | CN102505550A Method for improving lignin separation rate of bamboo dissolving slurry |
| 06/20/2012 | CN102505548A Synchronous remover for mixed impurities of ink and adhesive in waste paper, and preparation method thereof |
| 06/20/2012 | CN102505545A Low-carbon clean pulping process |
| 06/20/2012 | CN101451321B Low brightness pulp prepared by ammonium sulfite steam cooking wheat straw raw material, preparation method and use thereof |
| 06/14/2012 | WO2012076933A1 Modified cellulose pulps, a method of high pressure processing for preparing same and uses thereof |
| 06/13/2012 | EP2462278A1 Method for reducing negative effects of adhesive contaminants in systems of substances comprising waste paper |
| 06/13/2012 | EP2462277A2 Process for applying composition containing a cationic trivalent metal and debonder and fluff pulp sheet made from same |
| 06/13/2012 | EP2462276A2 Dry fluff pulp sheet additive |
| 06/13/2012 | EP2013325B1 Bleach systems enveloped with polymeric layers |
| 06/13/2012 | CN102493260A Mixed paper pulp of reed and poplar as well as its production method |
| 06/13/2012 | CN102493258A Woodfree writing paper and production method thereof |
| 06/13/2012 | CN102493257A Masson pine dissolving pulp and production method thereof |
| 06/13/2012 | CN102493256A Eucalyptus dissolving pulp and production method thereof |
| 06/13/2012 | CN102493250A Biomass waste residue squeezer |
| 06/13/2012 | CN102493249A Bleaching method capable of increasing bulk of masson pine bleached thermo-mechanical pulp and reducing pollution load of waste liquor |
| 06/13/2012 | CN102493247A Application of book paper to wastepaper deinking instead of office wastepaper |
| 06/07/2012 | WO2012075083A2 Viscosity control in compositions comprising plant fiber materials |
| 06/07/2012 | US20120142909 Viscosity control in compositions comprising plant fiber materials |
| 06/06/2012 | EP2461203A2 Image presentation and micro-optic security system |
| 06/06/2012 | CN102108645B Recovery processing process for heat transfer printing paper |
| 06/06/2012 | CN101560740B Bleaching method for bleaching deinked waste pulp |
| 05/30/2012 | EP2458423A2 Image presentation and micro-optic security system |
| 05/30/2012 | EP1831456B1 A roll press and a roll body for a press roll |
| 05/30/2012 | CN101929088B Waste paper pulping method |
| 05/30/2012 | CN101928485B Waste paper deinking agent |
| 05/30/2012 | CN101880632B Laccase and preparation method and special production strain thereof |
| 05/30/2012 | CN101638864B Natural color bento box and preparation method thereof |
| 05/30/2012 | CN101638862B Natural color offset plate printing paper and preparation method thereof |
| 05/30/2012 | CN101451320B Grass type low brightness pulp, preparation method and use thereof |
| 05/30/2012 | CN101410520B Novel bacillus 029cel cellulase |
| 05/30/2012 | CN101331260B Bleaching of substrates |
| 05/24/2012 | WO2012067573A1 A cellulose pulp dryer having blow boxes, and a method of drying a web of cellulose pulp |
| 05/24/2012 | WO2012067570A1 A drying box comprising at least two zones for drying a cellulose pulp web |
| 05/24/2012 | WO2012065820A1 Disk filter |
| 05/24/2012 | US20120125547 Modified cellulose fibers and cellulose composite thereof |
| 05/24/2012 | CA2817967A1 A drying box comprising at least two zones for drying a cellulose pulp web |
| 05/24/2012 | CA2817898A1 A cellulose pulp dryer having blow boxes, and a method of drying a web of cellulose pulp |
| 05/23/2012 | EP2454359A2 Industrial cleaning compositions and methods for using same |
| 05/23/2012 | CN202223960U Three-squeezing area thickener |
| 05/23/2012 | CN102472015A 生产微纤纤维素的方法 The method of production of cellulose microfibers |
| 05/23/2012 | CN102472014A 生产微纤纤维素的方法以及所产生的微纤纤维素 Production methods and micro-fiber cellulose produced cellulose microfibers |
| 05/23/2012 | CN102472013A 生产微纤纤维素的方法 The method of production of cellulose microfibers |
| 05/23/2012 | CN102472005A 用于洗涤纤维素纸浆的设备和方法 Apparatus and method for washing cellulose pulp |
| 05/23/2012 | CN102472004A Dry fluff pulp sheet additive |
| 05/23/2012 | CN102472003A 用于施加包含阳离子三价金属和解胶剂的组合物的方法以及由该方法制造的绒毛浆片材 Method for applying a composition comprising a trivalent metal cation, and the reconciliation agent to pulp sheets made by the method |
| 05/23/2012 | CN102472002A Method and device for producing products from raw material pulp sheet |
| 05/23/2012 | CN102154899B Base paper of sandpaper and production method thereof |
| 05/23/2012 | CN101942775B Medium and high-concentration pulp ozone bleaching device |
| 05/23/2012 | CN101736626B Paper-making pulping method |
| 05/22/2012 | US8182557 Use of lignocellulosics solvated in ionic liquids for production of biofuels |
| 05/22/2012 | CA2721612C Processes for preparing mechanical pulps having high brightness |
| 05/22/2012 | CA2707027C Conversion of knot rejects from chemical pulping |
| 05/22/2012 | CA2417927C Method of making a composition, a product from such method, and the use thereof in removing or dissolving a contaminant from an environment |
| 05/18/2012 | WO2012034997A9 Modified cellulose fibres |
| 05/16/2012 | EP2452015A1 Process for producing microfibrillated cellulose |
| 05/16/2012 | EP2452014A1 Process for the production of microfibrillated cellulose and produced microfibrillated cellulose |