| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 09/26/2006 | CA2256594C Method and apparatus for mixing a second medium with a first medium |
| 09/21/2006 | WO2006099029A2 Chemical oxidation for cellulose separation |
| 09/21/2006 | US20060207734 Chemical oxidation for cellulose separation |
| 09/21/2006 | US20060207733 Method and system for controlling the addition of oxygen gas and alkali during oxygen gas delignification |
| 09/21/2006 | US20060207732 Methods for improving discoloration resistance of pulp and pulp improved in discoloration resistance |
| 09/20/2006 | EP1702107A2 Method of producing fibre products |
| 09/20/2006 | EP1701986A1 Process for producing a fibre composition |
| 09/20/2006 | EP1409789B1 Method of loading a fiber suspension with calcium carbonate |
| 09/20/2006 | CN1834340A Separating method and system for waste paper and waste plastic mixture |
| 09/19/2006 | US7109325 Hypochlorite free method for preparation of stable carboxylated carbohydrate products |
| 09/19/2006 | CA2306171C Method and apparatus for introduction of a first fluid into a second fluid |
| 09/19/2006 | CA2250175C Paper products having wet strength from aldehyde-functionalized cellulosic fibers and polymers |
| 09/14/2006 | WO2006095349A1 Method of recycling fibers from sewage sludge and means thereof |
| 09/14/2006 | US20060204631 Cellulose fiber-based compositions and their method of manufacture |
| 09/14/2006 | US20060201642 Methods of treating chemical cellulose pulp |
| 09/14/2006 | US20060201641 Methods for producing pulp and treating black liquor |
| 09/12/2006 | CA2362238C Method and apparatus for treating pulp |
| 09/08/2006 | WO2006092045A1 Method for determining chemical pulp kappa number with visible-near infrared spectrometry |
| 09/08/2006 | CA2537033A1 Methods of treating chemical cellulose pulp |
| 09/06/2006 | CN1829840A Chemimechanical desilication of nonwood plant materials |
| 09/06/2006 | CN1827915A Hybrid penisetum NaOH-AQ method for pulp making, bleaching and paper forming |
| 08/31/2006 | WO2006091140A1 Method for treatment of bleached chemical pulp |
| 08/31/2006 | WO2006089395A1 Near-neutral deinking of recycled pulp using phosphines or phosphonium salts |
| 08/30/2006 | EP1694913A1 Bleached and unbleached fibrous paper pulps and a method for producing the same |
| 08/30/2006 | EP1694908A1 Method for charging a fibre suspension and arrangement for carrying out said method |
| 08/30/2006 | EP1694907A1 Hydrophilic fibers containing substantive polysiloxanes and tissue products made therefrom |
| 08/30/2006 | EP0889957B1 Subtilisin dimer with improved activity and process of producing same |
| 08/30/2006 | CN1826447A 印刷用纸 Printing paper |
| 08/29/2006 | US7097737 Method of making a modified unbleached pulp for lyocell products |
| 08/24/2006 | WO2006089274A1 Pulp and paper having increased brightness |
| 08/22/2006 | US7094318 Treating with caustic; impregnating fluff or sheet pulp with aldehyde; drying, curing |
| 08/17/2006 | WO2005037328A3 Materials useful in making cellulosic acquisition fibers in sheet form |
| 08/17/2006 | US20060180506 Screen apparatus |
| 08/16/2006 | CN1818206A Paper-pulp washing process and optimizing control |
| 08/16/2006 | CN1818205A Catalytic pyrolyzing agent for pulping without steaming and boiling |
| 08/15/2006 | US7090744 Process for making composition for conversion to lyocell fiber from sawdust |
| 08/10/2006 | WO2006047713A3 Enzymatic-assisted chlorine dioxide treatment |
| 08/10/2006 | DE102005005016A1 Polymere hydrophobe Aminonitrilquats zur Bleichaktivierung Hydrophobic polymers Aminonitrilquats to bleach activation |
| 08/09/2006 | EP1688535A1 Method for removing unsaturated uronic acid in chemical pulp for papermaking |
| 08/09/2006 | EP1311717B1 Alkaline pulp having low average degree of polymerization values and method of producing the same |
| 08/09/2006 | EP1242128B1 Superabsorbent polymers |
| 08/09/2006 | CN1814910A Method for making paper pulp by using hydrogen peroxide and alkali substance reaction together |
| 08/09/2006 | CN1268806C Non-black liquid discharging pulping process and special boiler thereof |
| 08/08/2006 | CA2535519A1 Method for removing unsaturated uronic acid in chemical pulp for papermaking |
| 08/03/2006 | WO2006079512A1 Cross-linking involving a polymeric carbohydrate material |
| 08/03/2006 | US20060169429 System and method for oxygen delignification of pulp made for lignocellulosic material |
| 08/03/2006 | US20060169428 Devices and method for removing broken pulp web from a pulp dryer and maintenance platform for a pulp dryer |
| 08/02/2006 | EP1604060A4 Method for producing corn stalk pulp and paper products from corn stalk pulp |
| 08/02/2006 | CN1811055A Production process of bleached chemical pulp with hemp stalk core |
| 08/01/2006 | US7083704 Contacting cellulose and hemicellulose with an oxidant |
| 08/01/2006 | CA2497642A1 Method of producing of separate/isolated/pulp flows containing solid particles with given linear dimensions from pulp of industrial hydro-washing machines with succeeding sedimentation of valuable heavy component from isolated pulp flows on the set of gravitational sluice boxes |
| 07/26/2006 | CN1266333C High efficiency grass pulp washing and bleaching machine, and its pulping process |
| 07/25/2006 | US7081184 Process for making a very low COD unbleached pulp |
| 07/20/2006 | US20060160166 Rapid triglyceride assay for use in pulp pitch control |
| 07/20/2006 | US20060159871 Paper compositions, imaging methods and methods for manufacturing paper |
| 07/19/2006 | CN1804210A Improved paper pulp bleaching process |
| 07/18/2006 | US7077931 Reducing water requirement; simplified, lower cost filtrate distribution system; runnability |
| 07/13/2006 | US20060151134 Elimination of alum yellowing of aspen thermomechanical pulp through pulp washing |
| 07/12/2006 | EP1345848B1 Composition comprising an oxidizing and complexing compound |
| 07/12/2006 | EP1230456B1 Cellulose ethers and method of preparing the same |
| 07/12/2006 | CN2795268Y Ink removing machine |
| 07/12/2006 | CN1800487A Quick cold soaking and mechanical pulping process for grass family |
| 07/12/2006 | CN1263923C Supersonic chemical pretreating method for bagasse for wood-plastic composite material |
| 07/11/2006 | US7074301 Chemically cross-linked cellulose fiber and method of making same |
| 07/11/2006 | US7074300 Soaking raw materials in sodium hydroxide; drainage; cooling, depressurization |
| 07/11/2006 | US7074299 Process for using a phloroglucinol color delta to control blending, deinking and bleaching of groundwood-containing secondary pulp |
| 07/06/2006 | WO2006071165A1 A method for oxygen delignification of cellulose pulp at high pressure in several steps |
| 07/06/2006 | WO2006071164A1 Method for oxygen delignification of cellulose pulp at high pressure |
| 07/06/2006 | WO2006071163A1 Method for oxygen delignification of cellulose pulp by mixing of chemicals |
| 07/06/2006 | US20060144543 Process for producing a fibrous composition |
| 07/06/2006 | US20060144540 Method of using a high consistency slurry containing high levels of crosslinked cellulosic fibers |
| 07/06/2006 | US20060144535 Surface treatment with texturized microcrystalline cellulose microfibrils for improved paper and paper board |
| 07/06/2006 | US20060144534 Bleaching of cellulosic fibre material with peroxide using polymers as a stabiliser |
| 07/06/2006 | CA2559362A1 Method for oxygen delignification of cellulose pulp by mixing of chemicals |
| 07/06/2006 | CA2553539A1 A method for oxygen delignification of cellulose pulp at high pressure in several steps |
| 07/05/2006 | EP1676001A1 Method and device for charging a fiber material suspension |
| 07/05/2006 | EP1675556A2 Materials useful in making cellulosic acquisition fibers in sheet form |
| 07/05/2006 | CN1798890A Process for producing a fibrous composition |
| 07/04/2006 | US7070710 aqueous solution comprising 1-6.5 moles/liter alkali metal chlorate, 1-7 moles/liter hydrogen peroxide and at least one of a protective colloid, a radical scavenger or a phosphonic acid based complexing agent, wherein pH of solution is 1-4; feed for production of chlorine dioxide; storage stability |
| 07/04/2006 | US7070677 Method and apparatus for treating pulp with filler |
| 07/04/2006 | CA2214019C Treatments for inhibiting deposition in papermaking systems |
| 06/29/2006 | WO2006068569A1 A roll press and a roll body for a press roll |
| 06/29/2006 | WO2006066586A1 A modified sorptive lignocellulosic fibre material, preparation and use thereof and method for decontamination of fluid and aqueous media |
| 06/29/2006 | US20060140049 Apparatus for mixing |
| 06/29/2006 | US20060138058 Control of development of biofilms in industrial process water |
| 06/29/2006 | US20060137838 Treating unbleached or lightly bleached kraft pulp containing lignin and cellulose and with carboxyalkylating agent such as chloroacetic acid; high hemicellulose content and high degree of polymerization; superabsorbent |
| 06/29/2006 | CA2591985A1 A modified sorptive lignocellulosic fibre material, preparation and use thereof and method for decontamination of fluid and aqueous media |
| 06/29/2006 | CA2589534A1 A roll press and a roll body for a press roll |
| 06/28/2006 | CN1795306A Method for controlling pitch and stickies deposition |
| 06/28/2006 | CN1793490A Process of preparing mulberry root bark pulp for producing dustless paper |
| 06/28/2006 | CN1793489A Tech. of producing mulberry root bark pulp for making viscose fibre |
| 06/28/2006 | CN1793487A Process of immersing rolling for pulping and special eqiupment thereof |
| 06/28/2006 | CN1261555C Method of making composition, product from such method, and use thereof in removing or dissolving contaminant from environment |
| 06/27/2006 | US7067444 Lyocell nonwoven fabric |
| 06/27/2006 | US7067244 Rapid triglyceride assay for use in pulp pitch control |
| 06/22/2006 | WO2006028499A3 Methods of processing lignocellulosic pulp with cavitation |
| 06/22/2006 | US20060133195 Apparatus for mixing |
| 06/22/2006 | US20060131539 high molecular weight; stable aqueous polymer solution contains a homopolymer of acrylic acid, methacrylic acid or maleic acid, or a copolymer of acrylic acid and/or methacrylic acid with an unsaturated dicarboxylic acid; acidic pH; easily adjusted for the right pH |
| 06/22/2006 | US20060130984 Method for bleaching fibrous materials |
| 06/21/2006 | CN1791708A Superabsorbent cellulosic fiber and method of making same |