| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 10/31/2000 | US6139685 Method and device for treating a pulp suspension |
| 10/26/2000 | WO2000063492A1 Methods of making fiber bundles and fibrous structures |
| 10/26/2000 | WO2000063487A1 Absorbent articles and methods for producing the same |
| 10/26/2000 | WO2000063486A1 Fibrous structures including a fiber bundle and a debonding agent |
| 10/26/2000 | WO2000062730A1 Absorbent articles with nits and free-flowing particles |
| 10/26/2000 | CA2362348A1 Fibrous structures including a fiber bundle and a debonding agent |
| 10/25/2000 | EP1046743A1 Method of removing wax from cellulosic fiber used in a fiber suspension for a paper-making machine |
| 10/25/2000 | EP1045936A1 Aqueous compositions comprising complexing agents and uses therof |
| 10/24/2000 | US6136223 Metal ligand containing bleaching compositions |
| 10/24/2000 | US6136205 Laundering soiled garments by washing in aaqueous media containing detergent and bleaching agent comprising stabilized aqueous alkali or alkaline earth metal metal hypobromite solution |
| 10/24/2000 | US6136145 Method for treating pulp in an indirect heat exchanger in connection with bleaching |
| 10/24/2000 | US6136041 Method for bleaching lignocellulosic fibers |
| 10/18/2000 | EP1044299A1 Improved fluffed pulp and method of production |
| 10/18/2000 | CN1270580A Inhibition of pulp and paper yellowing using nitroxides and other coadditives |
| 10/18/2000 | CN1270545A Apparatus for cleaning a suspension, preferably a fiber mass suspension |
| 10/17/2000 | US6132716 Thermostable xylanases from Microtetraspora flexuosa as a feed additive |
| 10/17/2000 | US6132556 Varying the flow rate of liquor extracted from the pressure-control extraction to maintain the pressure in the digester at a desired superatmospheric level while maintaining a uniform and stable material movement in the counter-current |
| 10/17/2000 | CA2134905C Silicon polyelectrolytes for pitch deposit control |
| 10/12/2000 | WO2000060160A1 Process for producing cellulose pulp and fertiliser containing potassium |
| 10/12/2000 | WO2000043589B1 Treatment of recirculated filtrates in pulp production |
| 10/12/2000 | DE19916078A1 Enhancement of whiteness, lightness and color of fibrous materials, inorganic fillers, pigments and binders for paper manufacture and finishing uses water-soluble copper phthalocyanine complex as photoactivator |
| 10/11/2000 | EP0703971B1 Use of n,n-diacetic alpha-alanine and its salts as biodegradable complexing agents for alkaline earth and heavy metal ions in cleaning compositions for dishwashing |
| 10/11/2000 | CN1269854A Polyammonium quaternary polymer for controlling anionic Trash and pitch deposition and treating coated broke |
| 10/04/2000 | EP1040222A1 Bleaching of chemical pulp with peracid |
| 10/03/2000 | US6126782 Method for non-chlorine bleaching of cellulose pulp with a totally closed counter-current liquid circuit |
| 10/03/2000 | US6126781 Process for conditioning ozone gas recycle stream in ozone pulp bleaching |
| 09/28/2000 | WO2000056867A1 An enzymatic treatment method |
| 09/28/2000 | CA2365106A1 An enzymatic treatment method |
| 09/27/2000 | EP1039020A1 Process for bleaching lignocellulosic pulp |
| 09/27/2000 | EP0651785B1 ALKALOPHILIC -i(BACILLUS sp. AC13) AND PROTEASE, XYLANASE, CELLULASE OBTAINABLE THEREFROM |
| 09/26/2000 | US6124111 Method and an arrangement for measuring the amount/activity of catalase before or in connection with bleaching of preferably cellulose fibres included in a pulp suspension |
| 09/26/2000 | US6123809 Delignification and bleaching pulp, washing and oxidation |
| 09/26/2000 | US6123121 Distributing device for paper pulp |
| 09/26/2000 | CA2064027C Ground fault circuit interrupter |
| 09/20/2000 | EP1036237A1 Improvements to the bleaching process for chemical pulp and intermediate pulp dispersions |
| 09/20/2000 | EP0495836B2 Dye transfer inhibition |
| 09/20/2000 | CN2397172Y Cross-section variable channel slurry separating machine |
| 09/19/2000 | US6120557 Contacting textile or paper with a peroxy compound and an aminonitrile-n-oxide or salt as bleach activator for bleaching the textile or paper |
| 09/19/2000 | US6120556 Stabilizing agent for peroxide-bleaching procedure and methods of bleaching a fiber material by using same |
| 09/19/2000 | CA2149649C Process for bleaching of lignocellulose-containing pulp |
| 09/19/2000 | CA2149648C Process for delignification of lignocellulose-containing pulp |
| 09/14/2000 | WO2000053844A1 Method for manufacturing bleached mechanical and chemithermomechanical pulp |
| 09/14/2000 | WO2000053843A1 A process and an enzyme preparation with steryl esterase activity for controlling pitch during paper manufacture |
| 09/13/2000 | EP1035250A2 Device for the treatment of a fibrous suspension |
| 09/13/2000 | CN1056429C Biological ink-removing process for regenerating used paper |
| 09/08/2000 | WO2000052258A1 Bleaching of pulp with peracid as final bleaching agent |
| 09/08/2000 | WO2000052257A1 Multi-component system for the enzyme-catalysed oxidation of substrates and method for carrying out enzyme-catalysed oxidation |
| 09/08/2000 | WO2000052122A1 Detergent compositions comprising photobleaching delivery systems |
| 09/08/2000 | WO2000052101A1 A composition comprising a photo-oxidising agent and uses of the agent |
| 09/06/2000 | CN2394944Y Long net double roll pulp extruder |
| 09/06/2000 | CN1056208C Technique and equipment for separating papermaking pulping fibre from waste liquor |
| 09/05/2000 | US6114407 Sulfonated polymers |
| 09/05/2000 | US6113738 Adding plasticizer selected from adipic acid, dimethyl adipate, diethyl adipate, diisobutyl adipate and other esters of adipic acid; dispersing to obtain treated fiber; separating treated fiber from slurry containing wax; recovering fiber |
| 09/05/2000 | CA2128241C Pulp bleaching apparatus and method |
| 09/05/2000 | CA2074715C Process for bleaching of ligno-cellulosic material |
| 08/31/2000 | WO2000050463A1 Process for selective oxidation of cellulose |
| 08/31/2000 | WO2000050462A1 Oxidized cellulose-containing fibrous materials and products made therefrom |
| 08/30/2000 | EP1031657A1 A method for bleaching secondary fibres |
| 08/30/2000 | EP1030943A1 Bleaching of chemical pulp and treatment with a chelating agent |
| 08/30/2000 | EP1030941A1 Polymeric polycarboxylic acid crosslinked cellulosic fibers |
| 08/24/2000 | WO2000049222A1 Method and apparatus for treating pulp |
| 08/23/2000 | EP1029124A1 A process for improving the drainage of cellulosic pulps |
| 08/23/2000 | EP1029123A1 Method for filling and coating cellulose fibers |
| 08/23/2000 | EP1028939A1 Diester amine adducts |
| 08/23/2000 | EP0986670A4 Methods and compositions for treating stickies |
| 08/23/2000 | CN1055737C Prescription and process for intensively bleaching pulp using single state oxygen in alkali bleaching stage of multi-stage process |
| 08/22/2000 | US6107518 Preparation and use of iminodisuccinic acid salts |
| 08/22/2000 | US6107428 Biodegradable polyacrylic ester chelating agent; dispersants antiscaling agents, bleaching aids |
| 08/22/2000 | US6106669 Draining; pressurization |
| 08/22/2000 | US6106667 Treatment of recycled bleach plant filtrates |
| 08/22/2000 | CA2189796C Method for preparing delignified and bleached chemical paper pulps |
| 08/17/2000 | WO2000047813A1 Oxygen delignification of pulp in the presence of carbonates as alkali |
| 08/17/2000 | WO2000047812A1 Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
| 08/16/2000 | CN1263183A Method for raising paper pulp yield and its equipment |
| 08/15/2000 | US6103506 Enzyme and microorganism degrading rhamnogalacturonane II |
| 08/15/2000 | CA2198230C A pulp slurry-handling press roll, and twin roll and single roll slurry-handling presses |
| 08/09/2000 | EP1026312A1 Method and apparatus for pulp yield enhancement |
| 08/09/2000 | EP1025305A1 Chemical method for lignin depolymerization |
| 08/09/2000 | EP1025304A1 Method and apparatus for heating pulps |
| 08/08/2000 | US6099586 Metal ligand containing bleaching compositions |
| 08/03/2000 | WO2000045156A1 Method for monitoring quality of paper web |
| 08/03/2000 | WO1999060201A3 Peroxide, oxygen, and peroxide/oxygen brightening of chemical and mixed waste pulps |
| 08/03/2000 | CA2359315A1 Method for monitoring quality of paper web |
| 08/02/2000 | EP1023488A1 Resin-treated mercerized fibers and products thereof |
| 08/02/2000 | EP1023119A1 Method and apparatus for introduction of a first fluid into a second fluid |
| 08/02/2000 | CA2297586A1 Method and apparatus for pulp yield enhancement |
| 08/01/2000 | US6096170 Driving axle engaged; normally closed second outlet opening defined in curved gable |
| 07/27/2000 | WO2000043589A1 Treatment of recirculated filtrates in pulp production |
| 07/27/2000 | WO2000043588A1 Arrangement for adjusting width of fibre web |
| 07/27/2000 | CA2360638A1 Treatment of recirculated filtrates in pulp production |
| 07/26/2000 | CN1054900C Method for modifying and dewatering alkali paper-making black liquor |
| 07/25/2000 | US6093849 Made by reacting di- or triethanolamine with a group 1a or 2a salt of maleic acid in the presence of a lanthanide compound alkylation catalyst; use as chelating agents; chelating heavy metals prior to bleaching cellulose pulp |
| 07/25/2000 | CA2017334C Ozone treatment of chlorine dioxide/chlorine chlorinated pulp |
| 07/19/2000 | EP0912789A4 Stock washer for washing, thickening and classifying solids |
| 07/19/2000 | CN1260419A Fully chlorine-free bleaching method for broad-leaved wood sulphate pulp |
| 07/18/2000 | CA2219058C Method of treating chlorine dioxide |
| 07/18/2000 | CA2187757C Preparation process of paper for increasing filler contents and enhancing scott internal bond strength |
| 07/13/2000 | WO2000040618A1 Papermaking additive with primary amino groups and mechanical pulp treated therewith |
| 07/12/2000 | EP1017899A1 Transition-metal substituted tungstoaluminate complexes for delignification and waste mineralization |
| 07/11/2000 | US6086713 Displacement washing cellulose pulp in multistage washing system with each stage having filtrate, stages comprising feeding cellulose pulp to washing system, washing cellulose pulp, feeding wash liquid to each stage, removing filtrate |