| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 06/21/2006 | CN1260430C Method for single section bleaching bamboo/bagasse pulp |
| 06/20/2006 | CA2247533C Process for preparing a paper web |
| 06/20/2006 | CA2230110C Sulfonated polymers and method of sulfonating polymers |
| 06/15/2006 | US20060130183 Modification of plant lignin content |
| 06/15/2006 | US20060124786 Photocatalytic pulp composition |
| 06/15/2006 | US20060124259 Process and arrangement for replacing intra-fiber liquid in fibers with a replacement liquid |
| 06/15/2006 | US20060124257 Method for bleaching mechanically defibered pulp |
| 06/14/2006 | EP1668182A2 Cross-linked cellulose fibers and method of making same |
| 06/14/2006 | EP1668180A1 Chemical activation and refining of southern pine kraft fibers |
| 06/14/2006 | EP1668113A2 Laccases, nucleic acids encoding them and methods for making and using them |
| 06/14/2006 | EP0827533B1 Enzyme and microorganism degrading rhamnogalacturonane ii |
| 06/14/2006 | CN1788119A Use of water-soluble crosslinked cationic polymers for controlling deposition of pitch and stickies in papermaking |
| 06/14/2006 | CN1786339A Method for improving mechanical wood pulp fibre performance |
| 06/14/2006 | CN1786335A Process for bleaching wheat straw grass pulp by alkaline method |
| 06/13/2006 | US7060160 Water content of 3 wt % or less, the average fiber diameter of 5 to 300 mu m and the average fiber length of 0.1 to 70 mm is incorporated into 5 to 60 wt % of titanium oxide. |
| 06/08/2006 | US20060118260 Bleaching of cellulose pulp in a first chlorine dioxide bleaching step |
| 06/08/2006 | US20060118255 Cross-linked pulp and method of making same |
| 06/07/2006 | EP1664421A1 Chemimechanical desilication of nonwood plant materials |
| 06/07/2006 | EP1664399A2 Superabsorbent cellulosic fiber and method of making same |
| 06/07/2006 | CN1782222A Flotation deinking device for waste peper |
| 06/01/2006 | WO2006056737A1 Improved biocomposite material |
| 06/01/2006 | US20060113051 Method for creating a fibrous substance suspension used for producing a tissue web or hygiene web |
| 06/01/2006 | US20060113048 Method for washing pulp in a bleaching line and a bleaching line |
| 06/01/2006 | US20060112495 Process for pre-treating cellulosic fibers and cellulosic fiber blends |
| 05/31/2006 | EP1660718A1 High hlb non-ionic surfactants for use as deposition control agents |
| 05/31/2006 | EP1383857B1 Use of metal complex compounds as oxidation catalysts |
| 05/31/2006 | EP1141336B1 Variants of egiii-like cellulase and compositions thereof |
| 05/31/2006 | CN2784441Y Combined highly pressured black liquor extraction machine |
| 05/31/2006 | CN2784440Y Highly pressured black liquor extraction unit |
| 05/30/2006 | US7052614 Prevent development of biofilm; interfer or prevent communication between cells |
| 05/30/2006 | US7052579 Pitch control composition |
| 05/30/2006 | US7052578 Process employing magnesium hydroxide in peroxide bleaching of mechanical pulp |
| 05/30/2006 | CA2251866C Method of preparation of a cellulosic pulp, cellulosic pulp to be used in absorbent products, and such absorbent product |
| 05/25/2006 | US20060108083 Process and device to disperge a recycled fibre pulp |
| 05/18/2006 | WO2005068074A3 Use of metal complex compounds comprising pyridine pryimidine or s-triazne derived ligands as catalysts for oxidations with organic peroxy acids and/or precursors of organic peroxy acid and h2o2 |
| 05/18/2006 | US20060102301 pressing out water in a thickening device to form a highly consistent paper fiber stock, then heating the highly consistent paper fiber stock, and dispersing the heated highly consistent paper fiber stock with dispersers |
| 05/18/2006 | DE19500483B4 Redispergierbare mikroklassifizierte Cellulose und Verfahren zu ihrer Herstellung Mikroklassifizierte redispersible cellulose and process for their preparation |
| 05/17/2006 | CA2523736A1 Method for enzymatic deinking of waste papers, the waste papers so treated and the treating composition |
| 05/16/2006 | US7044985 Activating compound selected from the group of: organic acid salts, organic nitrogen derivatives, transitional metal salts, transitional metal complexes pigments; adding caustic soda and hydrogen peroxide; heating water bath to >50 degrees |
| 05/16/2006 | CA2399666C Process to produce dried singulated cellulose pulp fibers |
| 05/11/2006 | WO2006050111A1 Mercerized pulp and webs formed therefrom and process for forming such fibers |
| 05/11/2006 | US20060096722 Method of treating cellulose fibres |
| 05/11/2006 | CA2584678A1 Mercerized pulp and webs formed therefrom and process for forming such fibers |
| 05/10/2006 | CN1771366A Process for bio-bleaching of kraft pulp using bacterial consortia |
| 05/10/2006 | CN1255316C Chemical composition and method |
| 05/04/2006 | US20060090869 Process for feeding pulp into a blow tank or storage tank |
| 05/04/2006 | US20060090866 Method for washing pulp in a bleaching line |
| 05/02/2006 | US7037405 production of texturized microcrystalline cellulose from raw pulp material by hydrolyzing cellulosic material with mineral acid, defibrillation of intermediate; can be used for surface treatment of paper or paper board or as starting material for production of paper or paperboard |
| 05/02/2006 | CA2256559C N-bis- or n-tris-[(1,2-dicarboxy-ethoxy)-ethyl]-amine derivatives and preparation and use of the same |
| 04/27/2006 | US20060086471 Apparatus for forming an extended nip |
| 04/26/2006 | EP1198411B1 Chemical composition and method |
| 04/26/2006 | EP1155040B1 Oxidized cellulose-containing fibrous materials and products made therefrom |
| 04/26/2006 | CN1763306A Neutral deinking method for waste newspaper |
| 04/26/2006 | CN1763305A Enzymatic deinking method for waste newspaper |
| 04/25/2006 | US7033069 Mixing device |
| 04/20/2006 | US20060081346 Peroxide bleaching of wood pulp |
| 04/19/2006 | EP1646751A1 Method of curling fiber and absorbent sheet containing same |
| 04/19/2006 | EP1330571B1 Method of manufacturing a fiber reinforced cement composite material, a composite building material and a material formulation |
| 04/18/2006 | US7029554 Method for brightening pulp with hydrosulfite solution generated from borohydride and bisulfite |
| 04/15/2006 | CA2522144A1 Method for bleaching wood fibers |
| 04/12/2006 | EP1645687A1 Printing paper |
| 04/12/2006 | EP1644574A1 Method for treating pulp in connection with the bleaching of chemical pulp |
| 04/12/2006 | CN2771272Y Pulp light-impurity deslagging device |
| 04/12/2006 | CN1250811C Four-stage alkaline peroxide mechanical pulping |
| 04/12/2006 | CN1250810C Method and device for inflation dispersing floation of pulp suspension liquid |
| 04/12/2006 | CN1250463C Composition and method for inhibiting calcium salt scale |
| 04/06/2006 | US20060070924 Multi-stage screening apparatus screen basket and method for screening pulp suspensions |
| 04/06/2006 | US20060070711 Low pH treatment of pulp in a bleach sequence to produce pulp having low D.P. and low copper number for use in lyocell manufacture |
| 04/05/2006 | EP1643031A1 Processes for making compositions for conversion to lyocell fibers |
| 04/05/2006 | EP1643030A1 Processes for making compositions for conversion to lyocell fibers |
| 04/05/2006 | CN2769315Y Disc type heat dispersion machine |
| 04/05/2006 | CN2769313Y Pulp squeezing machine with function of rubbing, tearing and defibering |
| 04/05/2006 | CN2769311Y Non-digesting biochemical solvent continuous soaking catalytic pyrolysis circulation pulping apparatus |
| 04/04/2006 | US7022827 Xylanase, microorganisms producing it, DNA molecules, methods for preparing this xylanase and uses of the latter |
| 03/30/2006 | US20060065378 Vacuum washer drum |
| 03/30/2006 | US20060065377 High PH treatment of pulp in a bleach sequence to produce pulp having low D.P. and low copper number for use in lyocell manufacture |
| 03/29/2006 | CN1247487C Fiber reinforced cement composite materials using chemically treated fibers with improved dispersibility |
| 03/28/2006 | US7018511 Crossed-linked pulp and method of making same |
| 03/28/2006 | US7018510 Process for bio-bleaching of Kraft pulp using bacterial consortia |
| 03/28/2006 | US7018509 Washing, heat treatment; papermaking |
| 03/28/2006 | US7018508 Process for producing dried singulated crosslinked cellulose pulp fibers |
| 03/24/2006 | CA2518341A1 Vacuum washer drum |
| 03/23/2006 | US20060060319 Method of making absorbent sheet from recycle furnish |
| 03/23/2006 | US20060060315 Catalyzer for clean pulping and process for using the same |
| 03/22/2006 | EP1637596A1 Alkaline bacillus amylase |
| 03/22/2006 | CN2765931Y High-velocity wash hollander |
| 03/22/2006 | CN1246501C Method for simultaneous electrochemical production of sodium dithionite and sodium bisulfate peroxide |
| 03/21/2006 | US7015335 Mixture of a disazo dye and various monoazo dyes |
| 03/21/2006 | US7015185 for intensifying the bleaching effect of peroxygen compounds during the bleaching of colored soilings both on textiles and also on hard surfaces |
| 03/21/2006 | US7014684 Method for the treatment of waste gas from a cellulose plant |
| 03/16/2006 | WO2006028499A2 Methods of processing lignocellulosic pulp with cavitation |
| 03/16/2006 | WO2006027414A1 Apparatus and method for washing pulps |
| 03/16/2006 | WO2005103372A3 Oxidative, reductive, hydrolytic and other enzymatic systems for oxidizing, reducing, coating, coupling or cross-linking natural and artificial fiber materials, plastic materials or other natural or artificial monomer to polymer materials |
| 03/16/2006 | US20060057925 Prepreg having a matrix resin and a saturable resin nonwoven impregnated with a fluoropolymer floc, a wettable structural organic floc, and a binder; used as liner substrate for self-lubricating bearings, as a sealant, in filters, and as a dielectric and in papermaking |
| 03/16/2006 | US20060054290 Novel catalytic activities of oxidoreductases for oxidation and or bleaching |
| 03/16/2006 | CA2579510A1 System for control of stickies in recovered and virgin paper processing |
| 03/16/2006 | CA2578004A1 Apparatus and method for washing pulps |
| 03/15/2006 | CN1746423A Triple-series diffusion back-washing system of size separator with double screw |
| 03/14/2006 | CA2275710C Treatment of bleach plant filtrates with oxygen |
| 03/14/2006 | CA2109111C Use of cellulase for pulp treatment |