| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 09/14/2011 | EP2365378A2 Image presentation and micro-optic security system |
| 09/14/2011 | EP2365377A2 Image presentation and micro-optic security system |
| 09/14/2011 | EP2365376A2 Image presentation and micro-optic security system |
| 09/14/2011 | EP2365375A2 Image presentation and micro-optic security system |
| 09/14/2011 | EP2365374A2 Image presentation and micro-optic security system |
| 09/14/2011 | EP1563138B1 Method and arrangement in making of mechanical pulp |
| 09/14/2011 | EP1454010B1 Method and system for the treatment of pulp prior to ozone bleaching |
| 09/14/2011 | CN102182094A Salix mongolica sulfate pulp bleaching process |
| 09/14/2011 | CN102182093A Bleaching process of bamboo dissolving pulp |
| 09/14/2011 | CN102182090A Composite pulp of paper pulp and cotton linter and preparation method thereof |
| 09/14/2011 | CN102182089A Short fiber food waste residue-based nano cellulose and preparation method thereof |
| 09/14/2011 | CN102182088A Method for producing biochemical fulvic acid and bleached paper pulp |
| 09/14/2011 | CN102182086A Method for preparing bamboo pulp by full-liquid-phase prehydrolysis sulfate displacement cooking process |
| 09/14/2011 | CN102181956A Short linen viscose fiber and preparation method thereof |
| 09/14/2011 | CN101736637B Production method for preparing bamboo dissolving pulp by utilizing natural-color unbleached bamboo pulp in a modifying way |
| 09/14/2011 | CN101023215B Method for removing lignin from water |
| 09/08/2011 | US20110214825 Method for manufacturing mechanical pulp and use of the mechanical pulp |
| 09/07/2011 | CN201962547U 双辊压滤脱液机 Double roll off the liquid filter press machine |
| 09/07/2011 | CN102174757A Preparation method of cotton pulp for high-strength paper |
| 09/07/2011 | CN102174494A Marine cryophilic endo beta-xylanase XynB as well as expressing gene xynB and application thereof |
| 09/07/2011 | CN101748645B Toilet tissue and manufacturing method thereof |
| 09/07/2011 | CN101638859B High-whiteness bleaching method for high-yield bamboo wood pulp |
| 09/06/2011 | CA2453131C Processes for preparing mechanical pulps having high brightness |
| 09/01/2011 | WO2011104209A1 Dewatering press |
| 09/01/2011 | US20110209839 Method for making absorbent products |
| 08/31/2011 | CN102171393A Press washer for washing cellulose pulp |
| 08/31/2011 | CN101748631B Efficient and clean puling and bleaching method dissolving alpha-pulp by Chinese alpine rush |
| 08/30/2011 | US8007636 Method of treating cellulose fibres with chlorine dioxide and an alkyl cellulose derivative |
| 08/30/2011 | US8007635 Lignocellulosic materials and the products made therefrom |
| 08/25/2011 | WO2011102760A1 Method and system for recycling of rejects in a process for cooking chemical pulp |
| 08/25/2011 | US20110203485 Bleaching method |
| 08/24/2011 | EP2358938A1 Method for controlling enzymatic decomposition of peroxide and products thereof |
| 08/24/2011 | EP2150489B1 Method for preparing dithionite and use thereof |
| 08/24/2011 | CN201942942U 一种导向轮装置 One kind of guide wheel device |
| 08/24/2011 | CN1993518B Pulp bleaching processes |
| 08/24/2011 | CN102165231A Sealing arrangement and apparatus for treating cellulose pulp |
| 08/24/2011 | CN102165116A An apparatus for washing and/or dewatering pulp |
| 08/24/2011 | CN102165115A An apparatus for washing and/or dewatering pulp |
| 08/24/2011 | CN102161846A Neutral flotation deinking agent and method of deinking waste newspaper thereof |
| 08/18/2011 | WO2011098599A1 Method for pulp bleaching |
| 08/18/2011 | US20110198048 Enzymatic hydrolysis of a polymer comprising vinyl acetate monomer |
| 08/18/2011 | CA2789180A1 Method for pulp bleaching |
| 08/17/2011 | CN201933355U 一种新型草浆除节机 A new addition to the festival machine Straw |
| 08/17/2011 | CN1839227B Multi-stage AP mechanical pulping process with refiner flow line treatment |
| 08/17/2011 | CN102154956A White top linerboard and production process thereof |
| 08/17/2011 | CN102154906A Paper pulp prepared from maize straw, preparation method thereof and paper product prepared from paper pulp |
| 08/17/2011 | CN102154899A Base paper of sandpaper and production method thereof |
| 08/17/2011 | CN102154888A High-concentration black liquor extraction device |
| 08/17/2011 | CN102154887A Method for producing high-whiteness bleached ramulus mori pulp by caustic soda-anthraquinone continuous stewing technology |
| 08/17/2011 | CN102154886A Pretreatment process for cleaning and bleaching chemical mechanical pulp |
| 08/17/2011 | CN102154885A Oxygen delignification process for bamboo wood dissolving pulp |
| 08/17/2011 | CN102154884A Improved bleaching process for bamboo wood dissolving pulp |
| 08/17/2011 | CN102154883A Alkaline bleach liquor extraction process of bamboo wood dissolving pulp |
| 08/17/2011 | CN102154882A Bleaching method of phloem pulp |
| 08/17/2011 | CN102154881A Process for washing bamboo wood dissolving pulp |
| 08/17/2011 | CN102154873A Method for cooking grass raw materials at two stages with soda anthraquinone by adding black liquor |
| 08/17/2011 | CN102154871A Method for pulping without producing strongly alkaline high-pollution black liquor |
| 08/17/2011 | CN101701205B Alkali-resistant xylanase XynE2, genes thereof and application thereof |
| 08/11/2011 | WO2011095335A1 Method and device for producing dry microfibrillated cellulose |
| 08/11/2011 | US20110192560 Process of producing xylose and dissolving pulp |
| 08/11/2011 | US20110192559 Methods for pretreating biomass |
| 08/10/2011 | CN102146362A Noval endoglucanase |
| 08/09/2011 | US7993490 Method for applying chemical additives to pulp during the pulp processing and products made by said method |
| 08/04/2011 | US20110186251 Continuous tube reactor |
| 08/04/2011 | US20110186250 Continuous Digestion of Chip Blends Containing a Western Red Cedar Chip Furnish |
| 08/03/2011 | EP2350383A1 Apparatus and method for dewatering cellulose pulp with improved dewatering efficiency |
| 08/03/2011 | EP2350381A1 Method for manufacturing papermaking pulp |
| 08/03/2011 | CN101529016B Press washer comprising separation of filtrates |
| 08/03/2011 | CN101103046B Improved biocomposite material |
| 08/02/2011 | US7988821 Process for the treatment of fibre material and new composition |
| 08/02/2011 | CA2633800C A method for manufacturing mechanical pulp |
| 08/01/2011 | CA2691460A1 Continuous digestion of chip blends containing a western red cedar chip furnish |
| 07/28/2011 | WO2011089123A1 Process for production of oxidised cellulose pulp |
| 07/28/2011 | WO2011088889A1 Process for production of oxidised cellulose pulp |
| 07/27/2011 | CN101067287B Producing technology for microcrystalline cellulose with waste acid cotton linter |
| 07/26/2011 | US7985321 Absorbent sheet having regenerated cellulose microfiber network |
| 07/21/2011 | WO2010131016A3 Paper filler composition |
| 07/21/2011 | US20110174451 Process for Delignifying and Bleaching Chemical Pulp |
| 07/21/2011 | DE102010001001A1 Verfahren zur Delignifizierung und Bleiche von Zellstoff The process of delignification and bleaching of pulp |
| 07/20/2011 | EP2345760A1 Process for delignifying and bleaching chemical pulp |
| 07/20/2011 | EP2344695A1 Bleaching method |
| 07/20/2011 | EP2344694A1 Press washer for washing cellulose pulp |
| 07/20/2011 | CN201901801U Sieve of screw press master and screw press master comprising same |
| 07/20/2011 | CN1896378B Methods of treating chemical cellulose pulp |
| 07/20/2011 | CN101768886B Hatchel falling bio-pulping technology |
| 07/20/2011 | CN101725070B Squeezing device of vacuum pulp washing machine |
| 07/20/2011 | CN101666053B Production method of chemi-mechanical pulp |
| 07/20/2011 | CN101158123B High-strength bamboo pulp manufacturing technique |
| 07/19/2011 | US7981248 Gas free valve for pulp vacuum washer and method |
| 07/19/2011 | CA2728349A1 Process for delignifying and bleaching chemical pulp |
| 07/19/2011 | CA2601926C Pulp and paper having increased brightness |
| 07/14/2011 | US20110168345 Method of producing paper and cardboard |
| 07/13/2011 | EP2225416B1 Method for converting lignocellulosic solutions having a high dry-material content |
| 07/13/2011 | CN102124160A Pulping additives for a reduction of resin from kraft pulp |
| 07/13/2011 | CN102121202A Vacuum pulp washer with screw driving device |
| 07/13/2011 | CN102121201A Preparation method of bamboo dissolving pulp |
| 07/13/2011 | CN101831845B Method for manufacturing thin wrapping paper by deinked pulp |
| 07/13/2011 | CN101535564B A press roll for washing and/or dewatering pulp, and a method for manufacturing or repairing such a press roll |
| 07/12/2011 | US7976677 Process of bleaching hardwood pulps in a D1 or D2 stage in a presence of a weak base |
| 07/12/2011 | US7976676 Treating a softwood pulp with a bleaching agent comprising ClO2 in the presence of a weak base such as Mg(OH)2; improved bleaching efficiency, high pulp brightness and brightness stability, improved pulp cleanliness |