| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 03/06/2013 | EP2563967A1 Process for the production of gel-based composite materials |
| 03/06/2013 | EP2563966A1 Process for the manufacture of structured materials using nano-fibrillar cellulose gels |
| 03/06/2013 | CN202766896U Double-screw washing machine |
| 03/06/2013 | CN101746863B Control of development of biofilms in industrial process water |
| 02/27/2013 | EP2561136A1 The use of acidic water in the manufacture of paper |
| 02/27/2013 | CN102943409A Method for making paper by utilizing aquilaria sinensis branches and leaves |
| 02/27/2013 | CN102943403A Wood pulp denaturalization production process for producing viscose fibers |
| 02/27/2013 | CN102020788B Cellulose pulp and production method thereof |
| 02/26/2013 | US8383529 Cellulose nonwoven fabric |
| 02/26/2013 | CA2728349C Process for delignifying and bleaching chemical pulp |
| 02/26/2013 | CA2564015C New composition and process for the treatment of fibre material |
| 02/21/2013 | US20130042986 Method for pulp bleaching |
| 02/20/2013 | CN202744878U Abrasion-resistant spiral pulp squeezer |
| 02/13/2013 | EP2557225A1 Paper filler composition |
| 02/13/2013 | CN102926269A Preparation method of high-whiteness refined cotton |
| 02/13/2013 | CN102926268A Normal-pressure low-temperature clean pulping process |
| 02/13/2013 | CN102926267A Archival paper and manufacturing method thereof |
| 02/13/2013 | CN102926266A Method for producing dissolving pulp by adopting wheat straw pulp as raw material |
| 02/13/2013 | CN102926261A Total-chlorine-free bleaching process of coniferous wood and broadleaf wood mixed sodium hydroxide anthraquinone chemical pulp |
| 02/13/2013 | CN102926258A Method for producing insulation paper from wastepaper |
| 02/13/2013 | CN102926186A Powerful reduced powder |
| 02/13/2013 | CN102304869B High water absorbent wet-strength paper and application thereof |
| 02/13/2013 | CN101675191B Method of monitoring and inhibiting scale deposition in pulp mill evaporators and concentrators |
| 02/12/2013 | US8372320 Method for drying cellulose nanofibrils |
| 02/06/2013 | CN102912667A Method for producing dissolving pulp by using poplar slabs |
| 02/06/2013 | CN101960069B Method of bleaching a pulp |
| 02/05/2013 | US8366876 Method and arrangement for improving a washing step after completed cooking in a continuous digester |
| 02/05/2013 | US8366875 Method and arrangement for wash after completed digestion in a continuous digester for the production of cellulose pulp |
| 02/05/2013 | CA2578004C Apparatus and method for washing pulps |
| 01/31/2013 | WO2013015323A1 Non-coated paper and coated paper |
| 01/30/2013 | CN102899951A Method for cleanly bleaching chemimechanical pulp |
| 01/29/2013 | CA2671876C A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2 |
| 01/24/2013 | US20130023014 Novel cellulase gene |
| 01/23/2013 | EP2547826A1 Method for improving the properties of a paper product and forming an additive component and the corresponding paper product and additive component and use of the additive component |
| 01/23/2013 | EP2547823A2 Process for producing modified cellulose pulps, cellulose pulp thus obtained and use of biopolymer for producing cellulose pulps |
| 01/23/2013 | EP2547822A1 Process for fibrillating lignocellulosic material, fibres and their use |
| 01/23/2013 | CN202688758U Pulp bleaching machine |
| 01/23/2013 | CN202688757U Rotary drum vacuum pulp washer |
| 01/23/2013 | CN202688756U Heating steam pipeline structure |
| 01/23/2013 | CN102888775A Bleaching process of paper pulp |
| 01/23/2013 | CN101484632B Process for producing a pulp |
| 01/22/2013 | CA2609463C Arrangement for the treatment of cellulose pulp |
| 01/22/2013 | CA2523736C Method for enzymatic deinking of waste papers, the waste papers so treated and the treating composition |
| 01/17/2013 | WO2013007717A1 Hydrophobised calcium carbonate particles |
| 01/17/2013 | WO2012138704A3 Method of monitoring macrostickies in a recycling and paper or tissue making process involving recycled pulp |
| 01/17/2013 | CA2839848A1 Hydrophobised calcium carbonate particles |
| 01/16/2013 | EP2546410A1 Hydrophobised calcium carbonate particles |
| 01/16/2013 | EP2544808A2 A method and a reactor for mixing one or more chemicals into a process liquid flow |
| 01/16/2013 | EP2544807A1 A method and apparatus for mixing various flows into a process liquid flow |
| 01/16/2013 | CN202671953U Double-roller frequency-changing type material piece washing machine |
| 01/16/2013 | CN102877347A Bleaching technology for using chemical paper pulp to prepare dissolving pulp |
| 01/16/2013 | CN102877346A Totally chlorine-free bleaching process using coniferous and broadleaf mixed sulfate chemical pulp |
| 01/16/2013 | CN102877345A Paper-making raw material washing and dewatering equipment |
| 01/10/2013 | WO2013004909A1 Method of removing hemicelluloses from pulp |
| 01/10/2013 | US20130014293 Xylanase Variants and Polynucleotides Encoding Same |
| 01/09/2013 | CN102869832A Process for the manufacture of structured materials using nano-fibrillar cellulose gels |
| 01/09/2013 | CN102869831A Process for the production of gel-based composite materials |
| 01/09/2013 | CN102864673A Ink discharge device for flotation deinking machine |
| 01/09/2013 | CN102251422B Method for producing ultrahigh-viscosity refined cotton |
| 01/08/2013 | CA2654187C Improved process for manufacturing pulp, paper and paperboard products |
| 01/08/2013 | CA2589534C A roll press and a roll body for a press roll |
| 01/03/2013 | WO2013000074A1 Catalytic biomass conversion |
| 01/03/2013 | US20130005869 Cationic microfibrillated plant fibre and manufacturing method for same |
| 01/03/2013 | CA2839348A1 Catalytic biomass conversion |
| 01/02/2013 | EP2539504A1 Dewatering press |
| 01/02/2013 | CN202644281U Novel drum-type vacuum pulp washer |
| 01/02/2013 | CN102852028A Method for low carbon cyclic utilization of oil palm waste via RBMP process and manufacture of mechanical paste via continuous bleaching |
| 01/02/2013 | CN102852019A Totally chlorine-free bleaching method of bamboo pulp for producing Daqian writing and painting paper |
| 01/02/2013 | CN102852018A Double-screw washing machine |
| 01/02/2013 | CN101903592B Method for converting lignocellulosic solutions having a high dry-material content |
| 12/27/2012 | US20120328758 Enhanced Fiber Additive; and Use |
| 12/26/2012 | CN202626736U Pipeline heater for processing papermaking pulp |
| 12/25/2012 | US8337663 Methods for increasing hydrolysis of cellulosic material |
| 12/20/2012 | CA2743838A1 Composition and process for bleaching of mechanical wood pulp |
| 12/19/2012 | EP2534296A1 Method for pulp bleaching |
| 12/19/2012 | EP2534254A1 Method for scale removal during a lignocellulosic conversion process |
| 12/19/2012 | CN202610639U Multi-stage series extraction equipment |
| 12/18/2012 | CA2597401C Methods for beating pulp, methods for treating process waters, and methods for producing pulp and paper |
| 12/18/2012 | CA2524205C Use of water-soluble crosslinked cationic polymers for controlling deposition of pitch and stickies in papermaking |
| 12/13/2012 | WO2012170183A1 Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same |
| 12/13/2012 | WO2012168562A1 Method for catalytic oxidation of cellulose and method for making a cellulose product |
| 12/13/2012 | CA2837533A1 Method for catalytic oxidation of cellulose and method for making a cellulose product |
| 12/13/2012 | CA2836895A1 Softwood kraft fiber having improved whiteness and brightness and methods of making and using the same |
| 12/12/2012 | EP2531643A1 Method and device for producing dry microfibrillated cellulose |
| 12/12/2012 | CN102817267A Method for enhancing using effect of magnesium oxide in P-RC APMP (Preconditioning-Refiner Chemical Treatment Alkaline Peroxide Mechanical Pulp) production by grinding pretreatment |
| 12/12/2012 | CN102817266A Accessory ingredient used for bleaching slurry oxygen delignification and application thereof |
| 12/12/2012 | CN102817262A High-yield environment-friendly papermaking and pulping process method and system |
| 12/12/2012 | CN102816749A Novel xylanase, and coding gene and application thereof |
| 12/12/2012 | CN102154956B White top linerboard and production process thereof |
| 12/12/2012 | CN102154882B Bleaching method of phloem pulp |
| 12/11/2012 | US8329234 Mask pack comprising cosmetic cotton-like material prepared from paper mulberry |
| 12/11/2012 | CA2609285C Arrangement and method for treatment of cellulose pulp involving means for seal adjustment |
| 12/06/2012 | US20120305208 Process for Recovering Molybdate or Tungstate from Aqueous Solutions |
| 12/06/2012 | US20120305207 Method for vapor phase pulping with alcohol and sulfur dioxide |
| 12/06/2012 | US20120305206 Method for removing ink from paper |
| 12/05/2012 | CN102812182A Method for improving the properties of a paper product and forming an additive component and the corresponding paper product and additive component and use of the additive component |
| 12/05/2012 | CN102812178A Process for production of oxidised cellulose pulp |
| 12/05/2012 | CN102811801A A method and apparatus for mixing various flows into a process liquid flow |
| 12/05/2012 | CN102808362A Manufacturing method of waterproof and fireproof paper |
| 12/05/2012 | CN102808347A Preparation method for microcrystalline cellulose |