| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 03/29/2007 | WO2007035525A2 Method for producing synthetic non-woven reinforced natural fiber substrates |
| 03/28/2007 | EP1766130A1 Treatment of pulp |
| 03/28/2007 | CN1936176A Clean production method for rice-wheat straw pulp capable of poaching by acetic acid method |
| 03/27/2007 | US7195695 Treating cellulosic fibers with a caustic solution under non-mercerizing conditions, forming said caustic treated cellulosic fibers into a sheet; applying a polymeric carboxylic acid cross-linking agent, curing |
| 03/22/2007 | US20070062653 Compositions and processes for paper production |
| 03/22/2007 | US20070062652 Method for charging a fibre suspension and arrangement for carrying out said method |
| 03/21/2007 | EP1430178B1 Method in a paper or pulp process to control the chemical state of the pulp and circulation water system |
| 03/21/2007 | CN1306113C Method and apparatus for dispersing regenerated fiber pulp |
| 03/21/2007 | CN1306112C Production technology of extra low viscose refined cotton |
| 03/21/2007 | CN1306111C Use of thinnings and other low specific gravity wood for lyocell pulps method |
| 03/15/2007 | US20070056703 A vessel is constructed with (preferably substantially stationary) screen surfaces which minimize compaction of comminuted cellulosic fibrous material, and allow springback of the material, as it flows downwardly |
| 03/14/2007 | CN1930345A Materials useful in making cellulosic acquisition fibers in sheet form |
| 03/14/2007 | CN1929920A Use of metal complex compounds comprising pyridine, pyrimidine or S-triazine derived ligands as catalysts for oxidations with organic peroxy acids and/or precursors of organic peroxy acids and H2O2 |
| 03/14/2007 | CN1928220A Process for making pulp with white paper mulberry |
| 03/14/2007 | CN1304691C Chlorohydrin and cationic compounds having high affinity for pulp paper |
| 03/14/2007 | CN1304546C New process for pre-treating cellulosic fibers and cellulosic fiber blends |
| 03/13/2007 | US7189329 Control of development of biofilms in industrial process water |
| 03/08/2007 | WO2007025580A1 Use of ashes as an alternative alkalising agent |
| 03/08/2007 | WO2007025417A1 Pulp clean bleaching process |
| 03/08/2007 | US20070051483 Process for Bleaching Kraft Pulp |
| 03/08/2007 | US20070051480 Method and apparatus for loading a fibrous stock suspension |
| 03/07/2007 | EP1759059A1 Method and device for preparing a fibrous material suspension |
| 03/07/2007 | EP1759055A1 Device and method for cleaning of a filter net of a pulp dryer's fan tower, a pulp dryer's fan tower and a pulp dryer |
| 03/07/2007 | CN1924190A Medium dense pulp tower |
| 03/06/2007 | US7186316 Method for preparing pulp from cornstalk |
| 03/01/2007 | US20070045157 Recovery of pin chips from a chip washing reject stream |
| 03/01/2007 | DE4400954B4 Verfahren zur Helligkeitssteigerung bei der Bleiche von Holzstoffen mit Wasserstoffperoxid Method for brightness enhancement in the bleaching of pulps with hydrogen peroxide |
| 02/28/2007 | CN1922360A A process for the treatment of fibre material and new composition |
| 02/28/2007 | CN1922359A Method for reducing the extractives content of high-yield pulps and method for producing bleached high-yield pulps |
| 02/27/2007 | US7183093 Comprises hydrolase for treating textiles, degrading plant biomass and fracturing subterranean formations |
| 02/27/2007 | US7182835 Two bleaching stages with chlorine dioxide as dominating bleaching chemcial and atleast one intermediated alkaline bleaching stage; for bleaching lignocellulosic fibrous material in the form of chemical pulp |
| 02/22/2007 | US20070042659 Fiber mat and process for making same |
| 02/22/2007 | US20070039702 Purification of alkaline washing liquid |
| 02/21/2007 | EP1753908A1 Method for producing a chemical conversion pulp |
| 02/21/2007 | EP1471988B1 A filtration method and apparatus |
| 02/21/2007 | CN2871604Y Spiral shove jointer |
| 02/20/2007 | US7179374 Device for shear-thinning of solids containing material |
| 02/20/2007 | US7179348 Prevention degradation; purification |
| 02/20/2007 | CA2254224C Process and device for dewatering of a fibre web |
| 02/15/2007 | WO2007016769A1 Synergistic bleaching of lignocellulosic materials with sodium hydrosulfite and h2o-soluble phosphines or phosphonium salts |
| 02/14/2007 | EP1751347A1 New composition and process for the treatment of fibre material |
| 02/14/2007 | CN2869092Y Columntype flotation ink-removing device |
| 02/14/2007 | CN1912239A Pulp bleaching production process technology of zero discharge of biological bleaching and bleaching water |
| 02/13/2007 | US7175792 Method for producing cellulose shaped-bodies |
| 02/07/2007 | EP1749935A2 Method for making tissue paper |
| 02/07/2007 | CN1908296A Paper making process at high yield with slurry |
| 02/06/2007 | US7172997 Having specific base substitutions and improved thermostability; controlling pitch troubles in pulping or papermaking; detergents; removing hydrophobic esters from fabrics; catalyst for hydrolysis or synthesis of esters |
| 02/06/2007 | US7172677 Mixing a selected phosphonate with an aqueous digester composition to inhibit the formation, deposition and adherence of scale to metallic surfaces, particularly in commercial chemical pulp processing equipment |
| 02/06/2007 | US7172148 Grooved pyramid disperger plate |
| 02/01/2007 | US20070025904 Preparation of a composition comprising an alkaline earth metal oxide and a substrate having a reduced amount of grit |
| 02/01/2007 | US20070022789 Dishwasher with a water preparation system |
| 01/31/2007 | CN1906359A Pitch controlling agent |
| 01/31/2007 | CN1297708C Black liquid with washing graded cooking process production in ball |
| 01/30/2007 | US7169258 Papermaking, cardboard |
| 01/30/2007 | CA2210903C Use of hydrophilic dispersion polymers for coated broke treatment |
| 01/24/2007 | EP1745175A2 Treatment composition for making acquisition fluff pulp in sheet form |
| 01/24/2007 | EP1623067B1 Use of water-soluble crosslinked cationic polymers for controlling deposition of pitch and stickies in papermaking |
| 01/24/2007 | CN1296556C Environment-friendly cold soaking pulping process with broad-leaved wood material |
| 01/23/2007 | US7166192 Adding hydrophobically modified hydroxyethyl cellulose and cationic polymers to a cellulosic pulp or paper making system inhibits the deposition of organic contaminants |
| 01/23/2007 | CA2264034C Method of agglomerating stickies in an aqueous slurry of wastepaper |
| 01/18/2007 | CA2614813A1 Method for loading fibers contained in a pulp suspension |
| 01/17/2007 | EP1743067A1 Method and device for dilution of cellulose pulp |
| 01/17/2007 | EP1743066A2 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 |
| 01/17/2007 | CN1898436A Method for reducing brightness reversion of mechanical pulps and high-yield chemical pulps |
| 01/17/2007 | CN1896378A Methods of treating chemical cellulose pulp |
| 01/16/2007 | US7163564 Using aqueous solution containing sodium borohydride, sodium hydroxide with sodium bisulfate |
| 01/11/2007 | WO2007005165A2 Cellulose sheet manufacturing system and method therefor |
| 01/11/2007 | WO2007004968A1 A roll body for a press roll |
| 01/11/2007 | WO2007003677A1 Mediator-enzyme system for controlling pitch deposits in pulp and paper production |
| 01/11/2007 | CA2614055A1 A roll body for a press roll |
| 01/10/2007 | EP1740763A2 Method for controlling a bleaching process for waste paper treatment and bleaching device for carrying out said method |
| 01/10/2007 | CN2856661Y Rotary drum enclosing valve of drum-like vacuum washing engine |
| 01/10/2007 | CN1294322C Process for preparing bamboo grout cakes used for production of secondary cellulose acetate sheets |
| 01/09/2007 | US7161005 Use of metal complex compounds as oxidation catalysts |
| 01/09/2007 | US7159333 Use of percarbamic acids and diacyl percarbamates and precursors therefor |
| 01/09/2007 | CA2261229C Metal ligand containing bleaching compositions |
| 01/09/2007 | CA2261228C Metal ligand containing bleaching compositions |
| 01/03/2007 | EP1739225A2 Method for removal of metals from a bleach plant filtrate system |
| 01/03/2007 | EP1737951A1 Method and dna constructs for increasing the production level of carbohydrate degrading enzymes in filamentous fungi |
| 01/03/2007 | CN1890429A Method for charging a fibre suspension and arrangement for carrying out said method |
| 01/03/2007 | CN1293261C Bleaching stage using xylanase with hydrogen peroxide, peracids, or a combination thereof |
| 01/02/2007 | US7156952 Method and arrangement for oxygen delignification of cellulose pulp |
| 12/30/2006 | CA2548970A1 Method for removal of metals from a bleach plant filtrate system |
| 12/28/2006 | WO2006136656A1 Method of treatment of pulp useful for papermaking |
| 12/28/2006 | DE102005049287A1 Sieve mechanism for extracting carrier liquid from fiber suspension during production of paper, paperboard or cardboard, comprises electrode disposed above, in, or below sieve region and connected to high voltage surge generator |
| 12/28/2006 | DE102005049274A1 Verfahren zur Behandlung eines Prozessgutes mit großflächigem Plasma Method of treating a process material with large-scale plasma |
| 12/28/2006 | DE102005049231A1 Verfahren zur Behandlung eines Prozessgutes bei der Herstellung von Papier, Karton oder Pappe A process for treating a process material during the production of paper, cardboard or paperboard |
| 12/28/2006 | DE102005049230A1 Verfahren zur Behandlung unverwobener Faserstoffe und Vorrichtung zum Bleichen A method for treating unverwobener fibers and apparatus for bleaching |
| 12/27/2006 | EP1734855A2 Dual zone wireless pulp washer |
| 12/27/2006 | EP1291431B1 Endoglucanase nce5 |
| 12/27/2006 | CN1886556A Cross-linked cellulose fibers and method of making same |
| 12/27/2006 | CN1292124C Bleaching paper pulp made from Salix psammophila and making method thereof |
| 12/21/2006 | WO2006134127A1 Method for treating non-woven fibrous materials and bleaching device |
| 12/21/2006 | WO2006134075A1 Method for treating a process material with large surface plasma |
| 12/21/2006 | WO2006134064A1 Method for treating a process material during the production of paper, card, or cardboard |
| 12/20/2006 | EP1732709A2 Apparatus and method for treating mulch |
| 12/20/2006 | CN2848920Y Series air flow drying machine |
| 12/19/2006 | CA2128050C Xylanase derived from a bacillus species, expression vectors for such xylanase and other proteins, host organisms therefor and use thereof |
| 12/13/2006 | EP1730348A2 A process for the treatment of fibre material and new composition |
| 12/13/2006 | EP1730227A1 Methods to enhance brightness of pulp and optimize use of bleaching chemicals |