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)
11/2003
11/05/2003CN1454272A Method for preparing pulp from cornstalk
11/05/2003CN1126713C Process for producing stabilized alkali or alkaline earth metal hypobromite and water treatment using the same hypobromite
10/2003
10/30/2003US20030203466 Comprises hydrolase for treating textiles, degrading plant biomass and fracturing subterranean formations
10/29/2003EP1356158A1 Method and apparatus for treating pulp with filler
10/29/2003EP0920551B1 Method of agglomerating stickies in an aqueous slurry of wastepaper
10/22/2003EP0729369B1 Method and apparatus for delivering oxygen
10/22/2003EP0670929B2 Process for bleaching of lignocellulose-containing pulp
10/22/2003CN2581470Y High-shear pressure mixer for mixing moderately enriched paper pulp and gaseous bleacher
10/22/2003CN1450918A Superabsorbent polymers
10/21/2003US6635755 Oxidized polymeric carbohydrates and products made thereof
10/21/2003US6635146 Mixing an aqueous suspension of papermaking fibers hydrolytic enzyme(s) capable of randomly hydrolyzing cellulose and/or hemicellulose; improved sheet strength
10/16/2003WO2003085199A2 White pitch deposit treatment
10/16/2003US20030192659 Dried singulated crosslinked cellulose pulp fibers
10/15/2003EP1352057A2 Lipolytic enzyme variant
10/15/2003EP1240384B1 Electrochemical method for determining lignin content of pulp
10/15/2003EP1114219B1 Calcium carbonate synthesis method and resulting product
10/15/2003EP1095184B1 Method of producing lignocellulosic pulp from non-woody species
10/15/2003EP0907788B1 Process for the bleaching of chemical pulp
10/15/2003EP0882151B1 Process for the treatment of chemical pulp
10/14/2003US6632328 Method for bleaching mechanical pulp with hydrogen peroxide and an alkaline earth metal carbonate
10/14/2003US6631810 Sealing arrangement for a pulp dewatering arrangement
10/14/2003CA2094421C Methods for controlling the deposition or organic contaminants in pulp and papermaking processes
10/14/2003CA2040337C Process for control of pitch deposition from pulps in papermarking systems
10/09/2003WO2003083208A1 Process for bleaching lignocellulose-containing non-wood pulp
10/09/2003US20030188838 Process for producing dried singulated crosslinked cellulose pulp fibers
10/09/2003US20030188449 System for making dried singulated crosslinked cellulose pulp fibers
10/08/2003CN1447853A Enzxyme compsns. in tablet form
10/08/2003CN1447852A Method of making compsn., product from such method, and use thereof in removing or dissolving contaminant from environment
10/08/2003CN1446976A Method and appts. for dispersing regenerated fiber pulp
10/08/2003CN1446955A Method of mfg. Laiosai fiber compsn.
10/08/2003CN1446954A Laiosai fiber
10/08/2003CN1446953A Method of mfg. Laiosai fiber
10/02/2003WO2003080925A2 Hydrogen peroxide activation in delignification and bleaching of wood pulp using a phenantroline-copper complex
10/02/2003WO2003080924A1 Method for the modification of cellulose fibres
10/02/2003WO2003079763A1 Compositions and composites of cellulosic and lignocellulosic materials and resins, and methods of making the same
10/02/2003US20030187102 Compositions and composites of cellulosic and lignocellulosic materials and resins, and methods of making the same
10/02/2003US20030186055 Reduced bleach stage temperature and chemical dose require-ments
10/02/2003US20030186054 For producing films, fibers, and non-woven webs
10/02/2003US20030186053 Reduce pulp viscosity to very low levels without increasing the copper number of the pulp, reduce the bleach stage temperature and the chemical dose needed in the bleach plant to produce lyocell pulp
10/02/2003US20030183351 Use of thinnings and other low specific gravity wood for lyocell pulps method
10/02/2003US20030182818 System for producing dried singulated cellulose pulp fibers using a jet drier and injected steam
10/01/2003EP1348802A1 Process and apparatus for dispersing a paper fibre slurry
10/01/2003EP0838010B1 High pressure gas exchanger
09/2003
09/30/2003US6627750 Highly carboxylated cellulose fibers and process of making the same
09/30/2003US6627041 Method of bleaching and providing papermaking fibers with durable curl
09/27/2003CA2421407A1 Process and device to disperge a recycled fibre pulp
09/25/2003WO2003078561A1 Ammonium nitriles and the use thereof as hydrophobic bleaching activators
09/25/2003US20030178163 Two-stage chlorine bleaching process with filtrate recirculation
09/25/2003CA2456927A1 Ammonium nitriles and the use thereof as hydrophobic bleaching activators
09/24/2003EP1345994A1 Black dye mixtures of fibre-reactive azo dyes and the use thereof for dyeing fibre material containing hydroxy and/or carbonamide groups
09/24/2003EP1228099B1 Oxidized polysaccharides and products made thereof
09/24/2003CN1444678A Method for reducing contamination from cellulosic suspensions
09/23/2003US6623599 Process for producing a paper web having calcium carbonate filler by introducing carbon dioxide to the pulp
09/18/2003US20030172464 Liquid ammonia explosion treatment of wood fibers
09/17/2003EP1242678B1 Method for bleaching pulp with chlorine dioxide
09/17/2003EP0907787B1 Distributing device for paper pulp
09/17/2003CN1121533C Method for making metal oxie and cellulose paper pulp modified with metal oxide
09/16/2003US6620865 Polycarboxylic acid crosslinked cellulosic fibers
09/16/2003US6620293 Curing sheet of mercerized cellulosic fibers with polymeric carboxylic acid; high absorbency and wet resiliency disposable products; low fines, nits knots
09/12/2003WO2003074780A1 Xylanase treatment of chemical pulp
09/12/2003CA2477847A1 Xylanase treatment of chemical pulp
09/11/2003US20030171238 Enzyme compositions in tablet form
09/11/2003US20030168190 Method for controlling the delignfication and bleaching of a pulp suspension
09/10/2003EP0960236B1 Lumen loading of mineral filler into cellulose fibers for papermaking
09/04/2003WO2003042451A3 Lignocellulose product
09/04/2003US20030164336 Processes of reducing contamination from cellulosic suspensions
09/03/2003EP1340814A1 Thermostable xylanases
09/03/2003EP1115943B1 Method for precipitating hemicellulose onto fibres for improved yield and beatability
09/03/2003EP0912234B1 Mixing device
08/2003
08/28/2003WO2003071024A2 Method for ozone treatment of used paper
08/28/2003WO2003070648A2 Method for ozone treatment of a liquid phase containing solid particles
08/28/2003US20030159786 Method for using water insoluble chemical additives with pulp and products made by said method
08/28/2003CA2475689A1 Method for ozone treatment of used paper
08/28/2003CA2475684A1 Method for ozone treatment of a liquid phase containing solid particles
08/27/2003EP1337315A2 Method for the treatment of waste gas from a cellulose plant
08/27/2003CN1438384A Double flow-lift tower oxygen bleaching method for middle concentration paper pulp
08/21/2003US20030157857 Absorbent structures of chemically treated cellulose fibers
08/21/2003US20030157595 Fungal culture for generating neutral or alkaline glucanases for biopolishing, defribillating, bleaching, dyeing, or desizing textiles; laundry detergents
08/21/2003US20030155087 Crossed-linked pulp and method of making same
08/21/2003US20030155086 Process for bleaching a lignocellulosic pulp
08/21/2003US20030155085 Process for bleaching pulp or paper
08/20/2003EP1336006A1 Method and apparatus for washing a fibre suspension
08/14/2003WO2003048663A3 Method and device for compressing ozone-containing gas for an ozone pulp bleaching process
08/14/2003US20030150578 Complex or adduct formed from styrene/ methacrylic acid copolymer and a calcium, magnesium, strontium, barium, nickel, copper, tin, cobalt, iron, and/or zinc ion
08/14/2003US20030150065 Liquid ammonia penetrates cellulosic fibers in a pressurized environment, and when the pressure is released, an explosive process produces cellulosic fibers having significant curl and a smooth, soft, silky feel
08/13/2003EP1334961A1 Process for the preparation of glycine-N,N-diacetic acid derivatives
08/13/2003CN1436262A Methods for control of organic contaminants in fiber suspensions
08/13/2003CN1436243A Endoglucanase NCE5 and cellulase preparations contg. same
08/12/2003US6605350 Sawdust alkaline pulp having low average degree of polymerization values and method of producing the same
08/12/2003US6605182 Polymers, their preparation and their use
08/12/2003US6605181 Peroxide bleach sequence including an acidic bleach stage and including a wash stage
08/12/2003US6605180 Fiber material and cooking liquor are introduced at top of digester and pulp is discharged from bottom via line in which pulp is maintained at same pressure level to pressurized wash; increased production in overloaded digesters
08/12/2003US6604743 Replaceable wearing surface for a sealing arrangement
08/07/2003WO2003064018A1 Mixing device
08/07/2003WO2003052200A3 Process for modifying wood pulp fiber morphology
08/07/2003CA2467971A1 Mixing device
08/06/2003EP1332255A1 Process for producing low dp microcrystalline cellulose
08/05/2003US6603054 Fibrous absorbent material and methods of making the same
08/05/2003US6602441 Bleaching-active metal complexes
08/05/2003US6602385 Treating dried filled paper with aqueous solution consisting of from about 0.1% by weight to about 50% by weight of bleaching agent selected from hydrogen peroxide, sodium borohydride and sodium hydrosulfite to increase brightness
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