| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 04/02/2008 | EP1242676B1 Method and apparatus for washing fibre pulp mixture |
| 04/02/2008 | CN101155957A Method of recycling fibers from sewage sludge and means thereof |
| 04/02/2008 | CN100377972C Papery food packaging bag |
| 04/01/2008 | US7351764 Methods to enhance brightness of pulp and optimize use of bleaching chemicals |
| 03/27/2008 | WO2008036031A1 Treatment of pulp |
| 03/27/2008 | WO2007140839A3 Method for producing fibrous material made of wood |
| 03/27/2008 | WO2007140838A3 Lignocellulosic fibrous material made of wood |
| 03/27/2008 | US20080076956 Lignocellulose-based anion-adsorbing medium (LAM) and process for making and using same for the selective removal of phosphate and arsenic anionic contaminants from aqueous solutions |
| 03/27/2008 | US20080075900 Biocomposite Material |
| 03/27/2008 | US20080073043 Treating aqueous suspension of bleached pulp derived from an alkaline pulping process prior to papermaking by dewatering and drying the suspension, wherein pH of suspension to be treated ranges from 6.5 to 12; improves brightness stability of bleached pulps containing hexenuronic acid groups |
| 03/27/2008 | CA2664088A1 Treatment of pulp |
| 03/26/2008 | CN101148837A Paper-making-stage primary color wood pulp plate denaturalization producing technique |
| 03/26/2008 | CN101148836A Paper-making-stage bamboo wood pulp plate denaturalization producing technique |
| 03/26/2008 | CN101148835A Paper-making-stage wood pulp plate denaturalization producing technique |
| 03/26/2008 | CN101148834A Paper-making-stage broad-leaved wood pulp plate denaturalization producing technique |
| 03/26/2008 | CN101148833A Paper-making-stage reclaiming wood pulp plate denaturalization producing technique |
| 03/26/2008 | CN101148832A Paper-making-stage high viscosity wood pulp plate denaturalization producing technique |
| 03/25/2008 | US7347916 Vacuum washer drum |
| 03/20/2008 | WO2008033529A1 Methods to control lipophilic extractives in acacia wood pulp and fiber |
| 03/20/2008 | WO2008002764A3 Covalent bonding of carboxylated cellulose fiber webs |
| 03/20/2008 | US20080070284 Pulp delignification/bleaching; coupling graft polymers; hydrolases |
| 03/20/2008 | US20080066879 Methods To Control Lipophilic Extractives In Acacia Wood Pulp and Fiber |
| 03/20/2008 | US20080066878 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 |
| 03/20/2008 | CA2663506A1 Methods to control lipophilic extractives in acacia wood pulp and fiber |
| 03/19/2008 | EP1900871A2 Method for reducing adhesive in paper manufacture |
| 03/19/2008 | EP1899272A1 Use of ashes as an alternative alkalising agent |
| 03/19/2008 | EP1163328B1 An enzymatic treatment method |
| 03/18/2008 | US7344593 Fiber reinforced cement composite materials using chemically treated fibers with improved dispersibility |
| 03/18/2008 | CA2312403C System and process for the oxygen delignification of pulp consisting of lignocellulose-containing material |
| 03/13/2008 | WO2008028960A1 Process for the deresination of pulp and use of carbon dioxide or (bi)carbonate therefor |
| 03/13/2008 | WO2008012588A3 Paper pulp composition and article formed therefrom |
| 03/13/2008 | US20080060775 8-Oxyl-7,7,9,9-tetramethyl-1,3,8-triaza-spiro[4.5]decane-2,4-dione; antiyellowing agents for lignin |
| 03/13/2008 | CA2699097A1 Process for the deresination of pulp and use of carbon dioxide or (bi)carbonate therefor |
| 03/12/2008 | EP1469937B1 Mixing device |
| 03/12/2008 | EP1392915B1 Rapid triglyceride assay for use in pulp pitch control |
| 03/12/2008 | EP0788541B1 Enzyme preparation with endoglucanase activity |
| 03/12/2008 | CN100374649C Method and device for compressing ozone-containing gas for an ozone pulp bleaching process |
| 03/12/2008 | CN100374648C Catalytic pyrolyzing agent for pulping without steaming and boiling |
| 03/06/2008 | WO2007143184A3 Pulp and paper having increased brightness |
| 03/06/2008 | WO2007143182A3 Improved process for manufacturing pulp, paper and paperboard products |
| 03/06/2008 | CA2661882A1 Laccases for pulp bio-bleaching |
| 03/05/2008 | EP1893803A1 Method for treating a process material during the production of paper, card, or cardboard |
| 03/05/2008 | CN101135118A Straw comprehensive utilization method |
| 03/05/2008 | CN101134968A Method for highly effective expression of xylanase gene and application in paper pulp bleaching process |
| 03/05/2008 | CN100372996C Improved paper pulp bleaching process |
| 03/05/2008 | CN100372995C Process for bio-bleaching of kraft pulp using bacterial consortia |
| 02/27/2008 | EP1891266A1 Method for treating non-woven fibrous materials and bleaching device |
| 02/27/2008 | EP1891265A1 Method for treating a process material with large surface plasma |
| 02/27/2008 | CN101133315A Method for determining chemical pulp kappa number with visible-near infrared spectrometry |
| 02/27/2008 | CN101130935A Low-viscosity cotton pulp used for producing cellulose ether-esters and method for making the same |
| 02/26/2008 | US7334347 Process for producing dried, singulated fibers using steam and heated air |
| 02/26/2008 | CA2453246C Use of thinnings and other low specific gravity wood for lyocell products method |
| 02/21/2008 | WO2008019507A1 Fiberboards, uses and methods of preparation thereof |
| 02/20/2008 | EP1701986B1 Process for producing a fibre composition |
| 02/20/2008 | EP1115946B1 Bleaching of medium consistency pulp with ozone without high shear mixing |
| 02/20/2008 | CN101128630A Fixation of optical brightening agents onto papermaking fiber |
| 02/19/2008 | CA2270524C Method of producing pulp using single-stage cooking with formic acid and washing with performic acid |
| 02/19/2008 | CA2188874C Thermostable xylanases |
| 02/19/2008 | CA2186592C Alkaline bacillus amylase |
| 02/19/2008 | CA2181163C Cold caustic extraction of pulps for absorbent products |
| 02/14/2008 | WO2007149836A3 Compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process |
| 02/14/2008 | US20080035287 Process For The Treatment Of Fibre Material And New Composition |
| 02/13/2008 | EP1885950A1 Arrangement for treatment of cellulose pulp |
| 02/13/2008 | EP1885949A1 Arrangement and method for treatment of cellulose pulp involving means for seal adjustment. |
| 02/13/2008 | EP1885948A1 Arrangement for the treatment of cellulose pulp |
| 02/13/2008 | EP1885947A1 Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with a reinforcing frame |
| 02/13/2008 | EP1885946A1 Arrangement for the treatment of cellulose pulp in a washing apparatus adapted to facilitate service and inspection of the apparatus |
| 02/13/2008 | EP1885945A1 Arrangement for the treatment of cellulose pulp involving seal positioning means |
| 02/13/2008 | EP1885944A1 Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with displaced peripheral valve seals |
| 02/13/2008 | EP1885943A1 Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with seal removing means |
| 02/13/2008 | EP1885942A1 An apparatus for distruibuting a pulp flow |
| 02/13/2008 | CN101124362A Use of cyclodextrin for reducing yellowing of pulp and paper |
| 02/13/2008 | CN101122101A Processes and systems for the pulping of lignocellulosic materials |
| 02/06/2008 | EP1883730A1 Process of bleaching |
| 02/06/2008 | EP1040222B1 Bleaching of chemical pulp with peracid |
| 02/06/2008 | CN101117779A Method of mechanical pulp making by using cotton pole |
| 02/06/2008 | CN100366663C Compositions and composites of cellulosic and lignocellulosic materials and resins, and methods of making the same |
| 02/05/2008 | US7326317 Activated fibers or particles having self-binding properties; contactig with oxidizer; press molding |
| 01/31/2008 | WO2008013875A2 Hydrophobically modified poly(ethylene glycol) for use in pitch and stickies control in pulp and papermaking processes |
| 01/31/2008 | WO2008012588A2 Paper pulp composition and article formed therefrom |
| 01/31/2008 | US20080023160 Enzymatic hydrolysis of a polymer comprising vinyl acetate monomer |
| 01/31/2008 | CA2659890A1 Paper pulp composition and article formed therefrom |
| 01/31/2008 | CA2658112A1 Hydrophobically modified poly[ethylene glycol] for use in pitch and stickies control in pulp and papermaking processes |
| 01/30/2008 | CN100365201C Enzymatic deinking method for waste newspaper |
| 01/30/2008 | CN100365199C Method for making pulp using cow dung as raw material |
| 01/29/2008 | CA2453241C Use of thinnings and other low specific gravity wood for lyocell pulps method |
| 01/29/2008 | CA2451366C Process for making very low cod unbleached pulp |
| 01/29/2008 | CA2318072C Improved papermaking processes |
| 01/24/2008 | WO2008011523A2 Improved compositions and processes for paper production |
| 01/24/2008 | US20080017581 Modified Sorptive Lignocellulosic Fibre Material, Preparation and Use Thereof and Method for Decontamination of Fluid and Aqueous Media |
| 01/24/2008 | US20080017337 Compositions and processes for paper production |
| 01/24/2008 | DE102006042429B3 Removal of adhesive residues during the recycling of waste paper, comprises disintegrating the waste paper to an aqueous suspension and subjecting the suspension to a physicochemical treatment for separating coarse-grained residues |
| 01/23/2008 | EP1880053A1 Chlorine dioxide treatment compositions and processes |
| 01/23/2008 | EP1461499B1 An apparatus and a method for controlling the alkalinity and ph of an industrial process |
| 01/23/2008 | CN101109162A Cotton stalk bleach pulp with disinfection function and method of manufacturing the same |
| 01/23/2008 | CN101109160A Novel non-chlorine bleaching technique for bamboo pulp |
| 01/23/2008 | CN101109159A Compositions and processes for paper production |
| 01/22/2008 | US7320741 Method of xylanase treatment in a chlorine dioxide bleaching sequence |
| 01/22/2008 | US7320740 Impregnating a wet laid sheet of caustic-treated cellulosic fibers with a compound containing both an aldehyde and a carboxylic acid group (glyoxylic acid, succinic acid monoaldehyde); fiberizing in a hammer mill; and crosslinking at 320-435 degrees F.; centrifuge retention capacity |
| 01/22/2008 | CA2384461C Method in connection with the production of mechanical pulp |