| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 12/04/2013 | CN101558197B Method for bleaching chemical paper pulps by final ozone treatment at high temperature |
| 11/27/2013 | CN103410038A Roller press used in papermaking industry |
| 11/27/2013 | CN103410037A High-pressure spraying cleaning device of double-roller squeezing pulp washer |
| 11/27/2013 | CN102535235B Bleached needle wood fluff pulp board and manufacturing method thereof |
| 11/27/2013 | CN102449235B Device for preventing rewetting of pulp |
| 11/27/2013 | CN102016166B Method and arrangement for improving operation of sealing elements of drum washer |
| 11/21/2013 | WO2013172777A1 Cellulose pulp dryer having blow boxes, and a method of drying a web of cellulose pulp |
| 11/21/2013 | WO2013171364A1 Method of separation of hemicellulose and cellulose from polysaccharide sources |
| 11/20/2013 | EP2274473B1 A distribution device for feeding of cellulose pulp |
| 11/20/2013 | EP2262946B1 Device and method for dilution of cellulose pulp |
| 11/20/2013 | CN203295889U Inclined screen device |
| 11/20/2013 | CN103403250A A device for adjusting a press nip |
| 11/19/2013 | CA2607827C Chlorine dioxide treatment compositions and processes |
| 11/13/2013 | EP2546410B1 Hydrophobised calcium carbonate particles |
| 11/13/2013 | CN101876154B Formula and production process of cotton pulp |
| 11/12/2013 | CA2561250C Wash liquid spray nozzles for pulp mat and method to assemble nozzle |
| 11/06/2013 | EP2660389A1 Process for obtaining tall oil from a sodium sesquisulfate solution |
| 11/06/2013 | EP2660070A1 Image presentation and micro-optic security system |
| 11/06/2013 | CN103382671A Clean pulping technology for high-polymerization-degree bamboo pulp |
| 10/31/2013 | WO2013121104A3 Method, system and apparatus for processing fibril cellulose and fibril cellulose material |
| 10/31/2013 | WO2013121083A3 Method for concentrating fibril cellulose and fibril cellulose product |
| 10/30/2013 | EP2655733A1 Method and arrangement for ameliorating the dewatering in a twin wire press |
| 10/30/2013 | EP2655732A1 Process for improving chlorine dioxide bleaching of pulp |
| 10/30/2013 | CN203256533U Roll-over mixing experimental device for ozone bleaching of high-concentration paper pulp |
| 10/30/2013 | CN103374848A Environment-friendly bleaching treatment fluid and environment-friendly bleaching method of natural fibers |
| 10/30/2013 | CN102505551B Method for alkaline hydrogen peroxide bleaching of paper pulp |
| 10/30/2013 | CN102212979B High-concentration pulp bleaching device |
| 10/29/2013 | US8568558 Process for delignifying and bleaching chemical pulp |
| 10/24/2013 | WO2013158384A1 The use of surfactant to treat pulp and improve the incorporation of kraft pulp into fiber for the production of viscose and other secondary fiber products |
| 10/24/2013 | WO2013156147A1 Method for automatically determining stickies in a recycled fibre process |
| 10/23/2013 | EP2652194A1 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 |
| 10/23/2013 | CN203247448U Spiral agitating slurry squeezer |
| 10/23/2013 | CN203247447U Production system for high-strength packaging paper by adopting mixed waste paper |
| 10/23/2013 | CN103362021A Plant-modified fibril and preparation technology thereof |
| 10/23/2013 | CN103362009A Rapid-growth poplar sodium hydroxide anthraquinone pulp biochemical method TCF bleaching process |
| 10/22/2013 | CA2719165C Sheet-formed fibrous material with improved strength property |
| 10/22/2013 | CA2607178C Process for producing mechanical pulp suitable for paper or cardboard making |
| 10/17/2013 | US20130269891 Process for improving chlorine dioxide bleaching of pulp |
| 10/17/2013 | US20130269890 Tampon including crosslinked cellulose fibers and improved synthesis processes for producing same |
| 10/16/2013 | CN103352384A Pulping process and paper pulp manufactured in same |
| 10/15/2013 | US8556087 Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with a reinforcing frame |
| 10/15/2013 | CA2724024C Process for recovering molybdate or tungstate from aqueous solutions |
| 10/10/2013 | WO2013150184A1 A method for bleaching pulp |
| 10/10/2013 | WO2013149913A1 Process for removal of solid non-fibrous material from pulp |
| 10/09/2013 | EP2646474A2 Viscosity control in compositions comprising plant fiber materials |
| 10/09/2013 | CN103348061A Bleached wood powder, production method for bleached wood powder, paper which uses same and production method for same |
| 10/09/2013 | CN103348013A Integrated process system |
| 10/09/2013 | CN103343472A Biochemical-method ECF (Extracellular Fluid) bleaching process for KP (Kraft Pulp) of fast growing poplars |
| 10/09/2013 | CN103343471A Novel waste paper recycling method |
| 10/02/2013 | CN103339318A Method for inhibiting pitch and pitch inhibitor |
| 10/02/2013 | CN103339317A A method for the use of oxidants for microbial control under reducing conditions |
| 10/02/2013 | CN103334335A Preparation method of pollution-free high-whiteness palm silk paper pulp and application of paper pulp in paper product |
| 10/02/2013 | CN103334331A TCE bleaching technology for sulfate pulp of growing poplar by biological chemical method |
| 10/02/2013 | CN103334328A Method for preparing bleached pulp by using eucalyptus wood chips |
| 10/01/2013 | US8546109 Biomass pretreatment |
| 10/01/2013 | US8545675 Apparatus for separating particles and methods for using same |
| 10/01/2013 | US8545673 Process for recovering molybdate or tungstate from aqueous solutions |
| 09/26/2013 | US20130248131 Modified cellulose from chemical kraft fiber and methods of making and using the same |
| 09/25/2013 | CN103321081A ECF bleaching technology of fast growing poplar by sodium hydroxide anthraquinone pulp bio-chemical method |
| 09/25/2013 | CN103321080A ECF bleaching technology of fast growing poplar by sulfate pulp bio-chemical method |
| 09/25/2013 | CN103321079A ECF bleaching technology of fast growing poplar by NaOH-AQ pulp biochemical method |
| 09/25/2013 | CN102286893B Pulp washer |
| 09/24/2013 | CA2609832C Arrangement for the treatment of cellulose pulp |
| 09/19/2013 | WO2013135362A1 Method for reducing negative effects of natural pitch contaminants in both pulping and papermaking operations |
| 09/18/2013 | EP2639350A1 Method for reducing negative effects of natural pitch contaminants in both pulping and papermaking operations |
| 09/18/2013 | EP2507251B1 Bleach catalyst compounds, method for the production thereof and use thereof |
| 09/18/2013 | CN103314060A Deinking compositions and methods of use |
| 09/18/2013 | CN103306153A Method for co-producing dissolving pulp and lignin through bagasse pith |
| 09/18/2013 | CN103306152A Preparation process of fluff pulp |
| 09/17/2013 | US8535480 Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse |
| 09/17/2013 | CA2609095C Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with seal removing means |
| 09/12/2013 | WO2013133913A1 Process for making absorbent component |
| 09/11/2013 | CN103290729A Production method of environment-friendly type electrostatic copy paper |
| 09/10/2013 | CA2455446C Stabilized bromine solutions, method of making and uses thereof for biofouling control |
| 09/06/2013 | WO2013127069A1 Thermostable xylanase from thermobifida fusca and methods of use thereof |
| 09/06/2013 | WO2013106170A3 Methods to control organic contaminants in fibers |
| 09/04/2013 | EP2632957A1 Process for the derivatization of cellulose |
| 09/04/2013 | CN103282580A Method and arrangement for ameliorating the dewatering in a twin wire press |
| 09/03/2013 | US8524038 Bleaching process of chemical pulp |
| 09/03/2013 | CA2607813C Arrangement for the treatment of cellulose pulp in a washing apparatus adapted to facilitate service and inspection of the apparatus |
| 09/03/2013 | CA2601507C Improved compositions and processes for paper production |
| 08/29/2013 | DE112011103784T5 Zellstoffbreitrockner mit Blaskästen und Verfahren zum trocknen einer Bahn aus Zellstoffbrei Zellstoffbreitrockner with blow boxes and method for drying a web of pulp |
| 08/28/2013 | EP2630296A1 Processing of wood fibre fraction |
| 08/28/2013 | CN203160046U Paper pulp disperser |
| 08/28/2013 | CN103266522A Method for bleaching waste paper pulp |
| 08/28/2013 | CN103266520A Preparation method of bleached straw pulp |
| 08/28/2013 | CN103266519A Preparation method of bleached straw pulp |
| 08/22/2013 | WO2013122530A1 Device for filtration of a liquid substance |
| 08/22/2013 | DE112011103779T5 Trocknungskasten mit mindestens Zwei Zonen für die Trocknung einer Zellstoffbahn Drying box with at least two zones for the drying of a cellulosic web |
| 08/21/2013 | CN203144828U Stepless adjustment device of refined cotton grinding cylinder |
| 08/21/2013 | CN103261516A A drying box comprising at least two zones for drying a cellulose pulp web |
| 08/21/2013 | CN103261514A Process for delignification and bleaching of paper pulp by using activated hydrogen peroxide |
| 08/21/2013 | CN102365405B Method and arrangement for wash after completed digestion in a continuous digester for the production of cellulose pulp |
| 08/21/2013 | CN102268833B Method for preparing dissolving pulp by carrying out steam explosion on crop straw and adopting prehydrolysis for sulfate |
| 08/20/2013 | CA2591851C Procedure and apparatus for the concentration of hydrophobic materials |
| 08/20/2013 | CA2539500C Materials useful in making cellulosic acquisition fibers in sheet form |
| 08/20/2013 | CA2497812C Device for shear-thinning of solids containing material |
| 08/15/2013 | WO2013119179A1 Cellulose nanofibril decorated with magnetic nanoparticles |
| 08/15/2013 | WO2013117823A1 Method for pretreating cellulose pulp |
| 08/15/2013 | WO2013092881A3 An improved pre-hydrolysis step involving vacuum |