Patents
Sitemap › D21 - Paper-making; Production of cellulose › D21C - Production of cellulose by removing non-cellulose substances from cellulose- containing materials; Regeneration of pulping liquors; Apparatus therefor › D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters
Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265)
06/2005
06/09/2005US20050121160 Process for the separation of organic nitrosonium and/or hydroxylamine compounds by means of cation exchange resins and recovery and oxidation processes based thereon
06/09/2005US20050121159 Process for the oxidation of hydroxy compounds by means of nitroxy compounds
06/09/2005US20050121158 Method and system for the treatment of pulp prior to ozone bleaching
06/09/2005DE10352891A1 Oxidation and/or bleaching system, generates reactive oxidant and nitrogen compounds, comprises special precursor and forms oxidative radicals and other oxidative compounds
06/08/2005EP1538256A2 Implementation of dissolved solids profiling
06/08/2005CN1624240A Purification decolouring method of poly aluminium chloride solution used for paper making sizing precipitant and its technology
06/07/2005US6902649 processed seed fiber suitable for other uses in papermaking or as a food additive for human consumption; corn, oats, soybeans; slurrying fiber in a dilute acid solution and washing; modifying agent step preferably includes an acid chlorite solution or a peroxide solution for improved brightness
06/07/2005CA2163985C Process in associaton with pulp bleaching
06/02/2005WO2005019526A3 System and method for controlling a processor including a digester utilizing time-based assessments
06/01/2005EP1534892A1 Chemically cross-linked cellulosic fiber and method of making same
06/01/2005CN1621613A Method for producing environment-friendly type natural color toilet paper
06/01/2005CN1621612A Bleaching paper pulp made from Salix psammophila and making method thereof
06/01/2005CN1621609A Integral slurrying method including oxygen delignify and bleaching and apparatus thereof
05/2005
05/31/2005US6899790 Concurrently heat- treating and convolving cellulosic fiber pulp at elevated temperature and pressure at high consitency, so as to preclude substantial fibrillation and attendant paper strength and fiber bonding development
05/26/2005WO2005047595A1 A method for changing roll plates of a roll body
05/26/2005US20050109475 Such as paper pulp
05/25/2005EP1533371A1 Culture having phenol oxidase-like activity
05/25/2005DE19953589B4 Polysaccharid mit funktionellen Gruppen, Verfahren zu dessen Herstellung und daraus hergestellte Produkte Polysaccharide with functional groups, procedures for the preparation thereof and products derived therefrom
05/25/2005CN1619056A Highly pare lignin, hihg efficiency fiber separating technology
05/25/2005CN1619055A Highly pure lignin, high efficiency fiber separating equipment system
05/24/2005US6896810 Reduces the amount of alkaline solution required by alkaline treatment
05/24/2005CA2249479C Method and apparatus for delivering a variable flow of hydrogen peroxide
05/19/2005WO2005045127A1 A method for bleaching lignocellulosic materials
05/19/2005US20050102762 An endoglucanase derived from Zygomycetes that may have a cellulose binding domain deleted; treating a cellulose fabric with the cellulase preparation to improve a property; deinking waste paper; improving freeness of paper pulp
05/19/2005DE10347920A1 Verfahren und Vorrichtung zum Beladen einer Faserstoffsuspension Method and apparatus for loading a fiber suspension
05/18/2005EP0986671B2 Improved papermaking processes
05/18/2005EP0865484B1 Novel xylanase composition and method for production thereof
05/18/2005CN1616761A Less chlorine bleaching and middle section water full closed recycling technology of alkaline sodium sulfite straw pulp
05/18/2005CN1202306C Telechnology of multioxometallate electro chemical bleaching chemical pulp and fiber
05/17/2005US6892969 Pulp washing shower
05/12/2005WO2005042838A1 Bleached and unbleached fibrous paper pulps and a method for producing the same
05/12/2005WO2005042832A1 Method and apparatus for estimating an optimal dosage of bleaching agent to be used in a process for producing pulp
05/12/2005WO2005042830A1 Multi-stage ap mechanical pulping with refiner flow line treatment
05/12/2005US20050098503 dissociating cations from their counterions by acidification, then pelletization of lignocellulose, adsorbing the cations and incubating the lignocellulose with alkaline fixing agent that catalyzes the exchange of hydrogens of the hydroxyl groups to lignocellulose adsorbing medium having positive charges
05/12/2005US20050098279 Method for bleaching mechanically defibered pulp
05/12/2005US20050098037 Method for the treatment of waste gas from a cellulose plant
05/12/2005CA2543781A1 Method and apparatus for estimating an optimal dosage of bleaching agent to be used in a process for producing pulp
05/06/2005WO2004103412A3 Superabsorbent cellulosic fiber and method of making same
05/04/2005EP1528149A1 Low consistency oxygen delignification process
05/04/2005CN1200152C Laiosai fiber
05/03/2005US6887347 Cellulose fibers comprising radiation activatable resin formalities
05/03/2005CA2398312C Bleaching process
05/03/2005CA2270598C Method for controlling oxygen delignification of pulp
04/2005
04/28/2005WO2005038127A1 Method and device for charging a fiber material suspension
04/28/2005WO2005037328A2 Materials useful in making cellulosic acquisition fibers in sheet form
04/28/2005US20050090577 Compositions and composites of cellulosic and lignocellulosic materials and resins, and methods of making the same
04/28/2005US20050087315 Low consistency oxygen delignification process
04/28/2005US20050086828 Process for producing dried, singulated fibers using steam and heated air
04/28/2005CA2539500A1 Materials useful in making cellulosic acquisition fibers in sheet form
04/28/2005CA2484557A1 Low consistency oxygen delignification process
04/28/2005CA2447098A1 Method for estimating an optimal dosage of bleaching agent to be mixed with wood chips
04/27/2005CN1610781A Method and device for compressing ozone-containing gas for an ozone pulp bleaching process
04/26/2005CA2186066C Process for bleaching chemical pulp for paper manufacturing
04/21/2005WO2005035871A2 Cross-linked cellulose fibers and method of making same
04/21/2005US20050085150 Superabsorbent cellulosic fiber and method of making same
04/21/2005US20050083780 Mixing device
04/20/2005EP1524241A1 A method for producing sodium dithionite to be used in the bleaching of mechanical pulp
04/20/2005EP1100605B1 Thickener
04/20/2005CN1608159A 木质纤维素产品 Lignocellulosic products
04/19/2005US6881299 Bleaching pulp under alkaline conditions; simultaneously refining and bleaching pulp
04/19/2005US6881298 Process for loading fibers with calcium carbonate in a plurality of reactors
04/19/2005CA2181677C Diffuser
04/14/2005WO2005033403A1 Preparation of a composition comprising an alkaline earth metal oxide and a substrate having a reduced amount of grit
04/14/2005WO2005033184A1 Manufacturing method of lignocellulose media coupled with fe or al
04/14/2005WO2004101889A8 Use of hemicellulase composition in mechanical pulp production
04/14/2005US20050079361 Materials useful in making cellulosic acquisition fibers in sheet form
04/14/2005DE19828952B4 Verfahren zur Erzeugung von satiniertem Papier Process for the production of satin paper
04/13/2005CN1196783C Enzyme processing process
04/07/2005US20050072542 Cross-linked cellulose fibers and method of making same
04/06/2005EP1520070A1 Bleaching of lignin and process for producing paper
04/05/2005CA2182688C Recycling of knots in a continuous process for cooking chemical pulp
03/2005
03/31/2005WO2005028744A1 Chemical activation and refining of southern pine kraft fibers
03/31/2005WO2005028743A1 Black liquor extracting method in manufacturing straw pulp
03/31/2005US20050067124 processed seed fiber suitable for other uses in papermaking or as a food additive for human consumption; corn, oats, soybeans; slurrying fiber in a dilute acid solution and washing; modifying agent step preferably includes an acid chlorite solution or a peroxide solution for improved brightness
03/31/2005US20050067123 Method for conveying, mixing, and leveling dewatered pulp prior to drying
03/31/2005US20050067121 conveying, mixing, leveling and flaking dewatered pulps to produce flakes for use in dryers
03/30/2005EP1518018A1 Treatment of a mixture containing cellulose with a reducing agent
03/30/2005CN1600649A Papery food packaging bag and preparing method
03/29/2005CA2384701C Method of making carboxylated cellulose fibers and products of the method
03/24/2005US20050061460 Method and arrangement for oxygen delignification of cellulose pulp
03/24/2005US20050061455 Chemical activation and refining of southern pine kraft fibers
03/23/2005CN1599822A Method and system for the treatment of pulp prior to ozone bleaching
03/23/2005CN1598131A Concentration apparatus for attrition mill
03/22/2005US6868973 Drum type refining or washing apparatus
03/22/2005CA2222661C Implementation of dissolved solids profiling
03/17/2005WO2005024126A1 Chlorine dioxide delignification of medium consistency pulp
03/17/2005WO2005024125A1 Chemimechanical desilication of nonwood plant materials
03/16/2005CN1594729A Biological enzyme deinking method for waste paper
03/16/2005CN1594727A Method for making pulp using feather as raw material
03/15/2005US6866749 Contacting paste with mixture of paracetic acid and performic acid; water pollution control
03/15/2005US6865822 Drying system for producing dried singulated cellulose pulp fibers
03/10/2005WO2005021714A2 Laccases, nucleic acids encoding them and methods for making and using them
03/10/2005WO2004070110A8 Bleaching and brightness stabilization of lignocellulosic materials with water-soluble phosphines or phosphonium compounds
03/10/2005US20050051288 Extended retention and medium consistency pulp treatment
03/10/2005US20050051287 Chemimechanical desilication of nonwood plant materials
03/10/2005US20050051286 Durable curl to papermaking fibers; pressurized rotating drum; controlling temperature
03/10/2005CA2535526A1 Laccases, nucleic acids encoding them and methods for making and using them
03/09/2005EP1511898A1 Diffuser washer for cellulose pulp
03/09/2005CN1590641A Production technology of bleaching salfate reed mixed pulp
03/09/2005CN1590640A In ball washing classifying digesting technology
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