| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 06/08/2004 | CA2212318C Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances and processes for its use |
| 06/03/2004 | US20040104002 For preparation of wood fibres for feeding fibres from a fibre separation at a first pressure to a drying at a second, lower pressure, whereby the system comprises a sluice feeder provided between the fibre separation and the drying |
| 06/02/2004 | EP1064082B1 Contaminant dispersants useful in recycling of treated containers |
| 06/02/2004 | CN1500937A Flowable and meterable densified fiber particle |
| 06/01/2004 | US6743332 Refining a wood chips with a bleaching liquor of hydrogen peroxidem, magnesium hydroxide and sodium carbonate, holding at 85-160 degrees c for 2-180 minutes to improve brightness |
| 05/25/2004 | CA2078276C Recovery of oxygen-rich gas from ozone bleaching processes |
| 05/21/2004 | WO2004042140A1 Process for producing kraft pulp |
| 05/21/2004 | WO2004042139A1 Method for improving the discoloration resistance of pulp and pulp improved in discoloration resistance |
| 05/21/2004 | CA2505018A1 Method for improving the discoloration resistance of pulp and pulp improved in discoloration resistance |
| 05/19/2004 | EP1420109A1 A method and an apparatus for treating paper pulp |
| 05/19/2004 | EP0950136B1 Treatment of bleach plant filtrates with oxygen |
| 05/19/2004 | DE10307201A1 Fiber suspension from recycled paper, for the production of writing and printing papers, has a feed of bulking agent before the final refining beating stage for improved retention |
| 05/19/2004 | CN1498227A Pulp treatment method |
| 05/19/2004 | CN1150055C Contaminant dispersants useful in recycling of treated containers |
| 05/18/2004 | US6736934 Method of pretreating pulp in an acid tower prior to bleaching with peroxide |
| 05/12/2004 | EP1418269A1 Method for brightening virgin mechanical pulp |
| 05/12/2004 | EP1418268A2 Flowable and meterable densified fiber particle |
| 05/12/2004 | EP1417238A1 Highly carboxylated cellulose fibers and process of making the same |
| 05/12/2004 | EP0991812B1 Method for the preparation of cellulose pulp, cellulose pulp to be used in absorption products, and absorption product |
| 05/12/2004 | EP0752028B1 Cellulosic products using high-bulk cellulosic fibers |
| 05/12/2004 | CN1496433A Method for processing pulp using water insoluble chemical additives |
| 05/12/2004 | CN1495318A Polysaccharide treated cellulose fiber |
| 05/11/2004 | US6733625 Method and apparatus for treating pulp |
| 05/06/2004 | WO2004038091A1 Light-stable and process-stable lignocellulosic materials and their production |
| 05/06/2004 | US20040084161 Method for the production of fiber pulp |
| 05/06/2004 | US20040084160 Method and apparatus for the thickening of fiber suspensions |
| 05/06/2004 | US20040084159 Chemically cross-linked cellulosic fiber and method of making same |
| 04/29/2004 | US20040081828 Flowable and meterable densified fiber particle |
| 04/29/2004 | US20040079497 Process for facilitating the use of high lignin containing waste paper in the manufacture of paper products |
| 04/27/2004 | CA2135960C Use of dispersion polymers for coated broke treatment |
| 04/22/2004 | US20040077071 Methods of xylanase treatment in bleaching |
| 04/22/2004 | US20040074616 Sheet of mercerized cellulosic fibers with a purity of at least 95% is treated with a solution containing a carboxylic acid cross-linking agent. The treated cellulosic fibrous material is dried and cured in sheet form to promote |
| 04/22/2004 | US20040074615 Process for preparing microcrystalline cellulose |
| 04/22/2004 | US20040074614 Deinking agent making it possible to improve ink collecting power in the step of flotation and yield high- quality deinked pulp without lowering the yield of pulp. It is a deinking agent comprising an ester of an alkylene oxide-added |
| 04/21/2004 | EP1409789A1 Method of loading a fiber suspension with calcium carbonate |
| 04/21/2004 | EP1409632A1 Method of making a composition, a product from such method, and the use thereof in removing or dissolving a contaminant from an environment |
| 04/20/2004 | CA2398488C Enhancements in pulping with dissolved solids control |
| 04/15/2004 | WO2003046169A3 Xylanases with enhanced thermophilicity and alkalophilicity |
| 04/15/2004 | US20040069427 Multi-stage AP mechanical pulping with refiner blow line treatment |
| 04/14/2004 | EP1408108A2 Cellulase producing actinomycetes, cellulase produced therefrom and method of producing same |
| 04/14/2004 | EP1407073A1 Method of producing bleached thermomechanical pulp (tmp) or bleached chemithermomechanical pulp (ctmp) |
| 04/14/2004 | EP1266073B1 Method for determining a characteristic value for the binding force potential of suspended paper fibers and use of this method |
| 04/14/2004 | CN1489656A Method for reducing impurities in cellulose fibers for manufacture of fiber reinforced cement composite materials |
| 04/13/2004 | US6719878 Method for avoiding mechanical damage of pulp |
| 04/08/2004 | DE19614947B4 Verfahren zur Erhöhung des Weißgrades von Papierfaserstoff A process for increasing the whiteness of paper pulp |
| 04/07/2004 | EP1404921A1 Cationic cellulosic fibres |
| 04/07/2004 | EP1404920A1 Cross-linked pulp and method of making same |
| 04/07/2004 | EP1266075B1 Bleaching pulp |
| 04/07/2004 | CN1144910C Multi-component system for the enzyme-catalysed oxidation of substrates and method for enzyme-catalysed oxidation |
| 04/06/2004 | US6716976 A nitroxyl compound such as tempo is oxidizedin the presence of a complex of a transition metal such as mn, fe, cu, and a complexing agent such as a polyamine, or an oxidative enzyme and used as the oxidizer |
| 04/06/2004 | US6716307 Process and system for the removal of scale build-up |
| 04/01/2004 | WO2003080925A3 Hydrogen peroxide activation in delignification and bleaching of wood pulp using a phenantroline-copper complex |
| 04/01/2004 | US20040060674 Method for measuring the percent consistency of pulp leaving a blow tank |
| 03/31/2004 | EP1402110A1 An arrangement for controlling the edge of pulp mass in a web former and a method for controlling the edge of pulp mass |
| 03/31/2004 | EP1402109A2 Use of lipolytic enzymes for stickies control |
| 03/31/2004 | EP1402092A1 Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same |
| 03/31/2004 | EP0857230B1 Production of soft paper products from high and low coarseness fibers |
| 03/31/2004 | CN1143914C Softened comminution pulp |
| 03/31/2004 | CN1143913C Method for producing cotton pulp using lateral pipe continous steaming and bleaching process |
| 03/25/2004 | WO2004025029A1 Improved method for using water insoluble chemical additives with pulp and products made by said method |
| 03/25/2004 | WO2004025019A1 Process and arrangement for replacing intra-fiber liquid in fibers with a replacement liquid |
| 03/25/2004 | WO2003071024A3 Method for ozone treatment of used paper |
| 03/25/2004 | WO2003070648A3 Method for ozone treatment of a liquid phase containing solid particles |
| 03/25/2004 | US20040058605 Polysaccharide treated cellulose fibers |
| 03/25/2004 | US20040058420 Method for producing cellulose derivatives |
| 03/25/2004 | US20040055719 Using didecyldimethyl ammonium halide; cement reinforcement |
| 03/25/2004 | US20040055092 Use of percarbamic acids and diacyl percarbamates and precursors therefor |
| 03/25/2004 | CA2499005A1 Process and arrangement for replacing intra-fiber liquid in fibers with a replacement liquid |
| 03/25/2004 | CA2497134A1 Improved method for using water insoluble chemical additives with pulp and products made by said method |
| 03/24/2004 | EP1400626A1 Polysaccharide treated cellulose fibers |
| 03/24/2004 | CN1143023C Modified cellulosic fibers and fiber webs containing these fibers |
| 03/23/2004 | CA2250153C Aldehyde-modified cellulosic fibers for paper products having high initial wet strength |
| 03/18/2004 | WO2003014029A3 Control of development of biofilms in industrial process water |
| 03/18/2004 | US20040054331 Absorbent articles with nits and free-flowing particles |
| 03/18/2004 | US20040050511 Cellulose suspensions containing peroxyacetic acid or peracetic acid and hydrogen peroxide in sufficient concentration to reduce the necessary amount of fluorescent whitener or optical brightener to achieve brightness (white) |
| 03/18/2004 | US20040050510 Filtration of pulp mill liquids |
| 03/18/2004 | US20040050509 Black liquor removed from pulp |
| 03/18/2004 | US20040050508 Pulp, sodium hydroxide and carbon dioxide gas fed into a rotating drum so that the gas flows countercurrently in relation to the pulp suspension to precipitate/crystallize sodium carbonate on the fibers; quality; retention |
| 03/17/2004 | EP1397551A2 Method for the production of woodpulp |
| 03/17/2004 | EP1397550A1 Method for supplying washing liquid to a process for cooking cellulose pulp |
| 03/16/2004 | US6706876 For making fibers of a registered cellulose compound |
| 03/16/2004 | US6706237 Contacting cellulose and hemicellulose with a reducing agent and reducing the copper number |
| 03/16/2004 | US6706148 Method for fixing a mineral filler on cellulosic fibers and method for making a sheet of paper |
| 03/16/2004 | US6706143 Minimizing chlorinated organics in pulp bleaching processes |
| 03/11/2004 | WO2004020617A1 Culture having phenol oxidase-like activity |
| 03/11/2004 | US20040049019 Black dye mixtures of fibre-reactive azo dyes and the use thereof for dyeing fibre material containing hydroxy and/or carbonamide groups |
| 03/11/2004 | US20040045687 Pulp fibers can be treated with water insoluble chemical additives resulting in a minimal amount of unretained water insoluble chemical additives present after exposing the treated pulp fibers to process water, liquids, or solutions |
| 03/10/2004 | EP1396723A1 Method for the measurement of dithionite concentration |
| 03/10/2004 | EP1395700A1 Methods to enhance pulp bleaching and delignification |
| 03/10/2004 | EP1395699A1 Method and apparatus for the feeding of fibres |
| 03/09/2004 | US6703618 Method and measurement device for measuring suspension |
| 03/09/2004 | US6702921 Methods to enhance pulp bleaching and delignification using an organic sulfide chelating agent |
| 03/04/2004 | WO2004018379A1 Cementitious material reinforced with chemically treated cellulose fiber |
| 03/04/2004 | US20040043217 Flowable and meterable densified fiber flake |
| 03/04/2004 | US20040041040 Dehydration; uniform particle size; for cellulose |
| 03/04/2004 | US20040040867 Method for the measurement of dithionite concentration |
| 03/04/2004 | US20040040684 Arrangement for feeding pulp to a bleaching tower |
| 03/04/2004 | US20040040679 Elimination of alum yellowing of aspen thermomechanical pulp through pulp washing |
| 03/04/2004 | US20040040678 Method and apparatus for washing a fibre suspension |
| 03/03/2004 | EP1392915A1 Rapid triglyceride assay for use in pulp pitch control |