| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 10/08/2009 | US20090250179 Compositions and composites of cellulosic and lignocellulosic materials and resins, and methods of making the same |
| 10/08/2009 | CA2719165A1 Sheet-formed fibrous material with improved strength property |
| 10/08/2009 | CA2716495A1 Device and method for dilution of cellulose pulp |
| 10/07/2009 | CN101553617A Method and unit for seal adjustment in a washing arrangement and a washing arrangement comprising such a unit |
| 10/07/2009 | CN101550661A Impeller-type paper pulp sparger at bottom of upward flow bleaching tower |
| 10/06/2009 | CA2504303C Process for producing kraft pulp |
| 10/06/2009 | CA2374796C Method and system for conveying shredded pulp to an ozone reactor |
| 10/06/2009 | CA2314702C Sealing arrangement for pulp dewatering arrangement |
| 10/01/2009 | WO2009117818A1 Process of chlorine dioxide bleaching of chemical pulps using magnesium hydroxide or magnesium oxide |
| 10/01/2009 | US20090242152 Bleaching process of chemical pulp |
| 10/01/2009 | CA2719500A1 Process of chlorine dioxide bleaching of chemical pulps using magnesium hydroxide or magnesium oxide |
| 09/30/2009 | EP2104765A2 Bleaching of substrates |
| 09/30/2009 | CN101548045A Pitch and stickies control in pulp and papermaking processes |
| 09/30/2009 | CN101545229A ClO2 bleaching method of bagasse pulp |
| 09/30/2009 | CN101545228A Discharging method of medium-consistency oxygen reaction tower and discharging pump device thereof |
| 09/30/2009 | CN101545226A Method for improving bagasse alkaline cooking effect through wet process with CEH bleaching waste liquor |
| 09/24/2009 | US20090236059 Digester wash extraction by individual screen flow control |
| 09/23/2009 | EP2103735A1 Catalytic bleaching of substrates |
| 09/23/2009 | CN101538810A Wet strength paper treatment technology |
| 09/23/2009 | CN101538536A High-efficiency lignin degrading strain and use thereof |
| 09/17/2009 | US20090229772 mixing fibrilated fibers of cellulose, hemicelluloses and lignin with lime to form an aqueous slurry; adding CO2 to the slurry to form a bleached mechanical pulp comprising crystallized CaCO3 mechanically bonded to fiber forming coating; resistant to yellowing under light; chemithermomechanical pulp |
| 09/16/2009 | EP2099968A1 Method of treating filtrate produced in thickening of paper fibre suspension |
| 09/16/2009 | EP2099967A2 A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2 |
| 09/16/2009 | EP1627107B1 Method for controlling pitch and stickies deposition |
| 09/16/2009 | EP0946818B2 Method and device for process control during bleaching of fibrous materials |
| 09/16/2009 | CN101535564A A press roll for washing and/or dewatering pulp, and a method for manufacturing or repairing such a press roll |
| 09/16/2009 | CN101535563A Methods to control lipophilic extractives in acacia wood pulp and fiber |
| 09/16/2009 | CN101532265A Method for bleaching pulp in a multistage manner |
| 09/16/2009 | CN101532264A Method for irradiating H*O*-bleached wheat straw pulp on a microwave |
| 09/16/2009 | CN101532263A Method for irradiating NaClO-bleached wheat straw pulp on a microwave |
| 09/16/2009 | CN100540802C Flowable and meterable densified fiber particle |
| 09/16/2009 | CN100540797C Polymeric polycarboxylic acid crosslinked cellulosic fibers |
| 09/10/2009 | US20090227975 Tampon including crosslinked cellulose fibers and improved synthesis processes for producing same |
| 09/09/2009 | EP2097582A1 A method for manufacturing mechanical pulp |
| 09/09/2009 | CN101529016A Press washer comprising separation of filtrates |
| 09/09/2009 | CN101525858A Waste paper deinking pulp chlorine-free bleaching method |
| 09/09/2009 | CN101525857A Method and device for evenly distributing fluid medium |
| 09/08/2009 | CA2377546C System and process for the oxygen delignification of pulp consisting of lignocellulose-containing material |
| 09/03/2009 | WO2009108111A1 Method of bleaching a pulp |
| 09/03/2009 | WO2009107645A1 Pulp washing agent and process for production of pulp |
| 09/03/2009 | WO2009105928A1 A process of joint production of fuel ethanol, electricity and paper pulp by classification conversion of pennisetum purpureum schum |
| 09/03/2009 | WO2009087265A3 Treatment of ozone-containing gas in connection with bleaching of pulp |
| 09/03/2009 | US20090218065 Arrangement for the Treatment of Cellulose Pulp Involving Seal Positioning Means |
| 09/03/2009 | US20090218055 Method for Recovering Hydrolysis Products |
| 09/02/2009 | EP2094907A2 Detoxifying pre-treated lignocellulose-containing materials |
| 09/02/2009 | CN101519856A Method for utilizing noil generated in the treatment process of long vegetable fiber for pulping and papermaking |
| 09/02/2009 | CN100535239C Method for reducing impurities in cellulose fibers for manufacture of fiber reinforced cement composite materials |
| 09/01/2009 | US7582213 Cellulose fiber-based filters |
| 09/01/2009 | CA2301371C Process for bleaching lignocellulose pulp |
| 08/26/2009 | EP2092116A1 Method for bleaching chemical paper pulps by final ozone treatment at high temperature |
| 08/26/2009 | EP2092115A1 Process for treating cellulose pulp using carboxymethylcellulose and pulp thus obtained |
| 08/26/2009 | EP2092114A2 Pitch and stickies control in pulp and papermaking processes |
| 08/26/2009 | CN201296877Y Slurry conveying and dewatering spiral |
| 08/25/2009 | CA2406550C Lyocell fibers having enhanced cv properties |
| 08/20/2009 | US20090205795 Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents |
| 08/20/2009 | US20090205794 Method for the production of tissue paper |
| 08/20/2009 | CA2714417A1 Tampon including crosslinked cellulose fibers and improved synthesis processes for producing same |
| 08/19/2009 | EP2089573A1 Drying box |
| 08/19/2009 | EP2089572A1 A press roll for washing and/or dewatering pulp, and a method for manufacturing or repairing such a press roll |
| 08/19/2009 | CN100529251C Method for producing paper pulp utilizing herbal plant, crop stalk and ore powder |
| 08/18/2009 | US7575658 Vacuum washer drum |
| 08/12/2009 | EP2087168A1 Method and unit for seal adjustment in a washing arrangement and a washing arrangement comprising such a unit |
| 08/12/2009 | CN101503865A Method for preparing mlcrocrystalline cellulose by corps straw |
| 08/11/2009 | CA2533108C Method for treating pulp in connection with the bleaching of chemical pulp |
| 08/07/2009 | CA2620978A1 Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents |
| 08/06/2009 | WO2009095549A1 Method for converting lignocellulosic solutions having a high dry-material content |
| 08/06/2009 | WO2009045652A3 Biomass treatment apparatus |
| 08/06/2009 | CA2707659A1 Method for converting lignocellulosic solutions having a high dry-material content |
| 08/05/2009 | EP2085510A1 Device for separating and washing fibres contained in a slurry |
| 08/04/2009 | CA2384471C Oxidised white liquor in an oxygen delignification process |
| 08/04/2009 | CA2300836C Polyammonium quaternary polymer for controlling anionic trash and pitch deposition and treating coated broke |
| 07/30/2009 | WO2009093615A1 Detergent for kraft pulp and process for producing kraft pulp with the same |
| 07/30/2009 | US20090189119 Use of metal complex compounds comprising pyridine pyrimidine or s-triazine derived ligands as catalysts for oxidations with organic peroxy acids and/or precursors of organic peroxy acids and h202 |
| 07/30/2009 | US20090188635 Method and apparatus for treating pulp |
| 07/29/2009 | EP2083117A1 Silica composition |
| 07/29/2009 | EP2082096A1 Bleaching of pulp |
| 07/29/2009 | EP2082095A2 An improved bleaching process with at least one extraction stage |
| 07/29/2009 | EP2082094A1 A process for reducing scaling in the pulp and paper industry and use of carbon dioxide therefor |
| 07/29/2009 | EP1590073B1 Apparatus for mixing |
| 07/29/2009 | CN101492893A Process for manufacturing calcium carbonate composite fiber and uses thereof |
| 07/23/2009 | WO2009091520A1 Carboxylic acid production process employing solvent from esterification of lignocellulosic material |
| 07/23/2009 | WO2009090150A1 Silica composition |
| 07/23/2009 | US20090183845 Process for producing bleached pulp |
| 07/22/2009 | EP2079872A1 Press washer comprising separation of filtrates |
| 07/21/2009 | CA2374913C Method for recovering chemicals in a process of producing kraft pulp |
| 07/16/2009 | WO2009087265A2 Treatment of ozone-containing gas in connection with bleaching of pulp |
| 07/15/2009 | CN101484632A Process for producing a pulp |
| 07/15/2009 | CN101484631A Method for improving the quality of a fibrous pulp |
| 07/15/2009 | CN100513682C Lignocellulose product |
| 07/14/2009 | CA2365017C Method for manufacturing bleached mechanical and chemithermomechanical pulp |
| 07/08/2009 | EP1745175A4 Treatment composition for making acquisition fluff pulp in sheet form |
| 07/08/2009 | CN101476256A Method for pre-extracting papermaking black liquid |
| 07/08/2009 | CN101476255A Alkaline process hypochlorite and hydrogen peroxide two-stage bleaching process for straw pulp |
| 07/08/2009 | CN101476254A Plane valve core and production technique thereof |
| 07/07/2009 | CA2361480C Device for distributing cellulose pulp of low and medium consistency in order to form a uniform pulp web |
| 07/02/2009 | WO2009081714A1 Process for production of bleached pulp |
| 07/02/2009 | WO2009056893A3 Process for bleaching pulp |
| 07/02/2009 | US20090165968 Modified kraft fibers |
| 07/02/2009 | CA2709526A1 Process for production of bleached pulp |
| 07/01/2009 | EP2074258A1 Fiberboards, uses and methods of preparation thereof |