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)
12/2006
12/13/2006	CN1878909A Full-closed zero discharge oxidizing pulping process and its preparation method
12/13/2006	CN1878908A Full-closed zero discharge bio-oxidizing pulping process and its preparation method
12/12/2006	US7147752 Pretreated pulp fibers; polyestersiloxane, polyethersiloxane copolymer
12/12/2006	US7147750 Upright papermaking vessel with a two-part screen, the first part being perforated to allow the passage of extracted liquid and the second part being solid and having a step-out adjacent the first part that forms a second cross-sectional area pathway greater than the first pathway
12/12/2006	CA2290972C Device for dehydrating and washing suspensions of fibrous material
12/12/2006	CA2250134C Compositions and methods for inhibiting the deposition of organic contaminants in pulp and papermaking systems
12/07/2006	WO2006130110A1 Arrangement for treatment of cellulose pulp
12/07/2006	WO2006130109A1 Arrangement and method for treatment of cellulose pulp involving means for seal adjustment.
12/07/2006	WO2006130108A1 Arrangement for the treatment of cellulose pulp
12/07/2006	WO2006130097A1 Arrangement for the treatment of cellulose pulp involving seal positioning means
12/07/2006	WO2006130096A1 Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with displaced peripheral valve seals
12/07/2006	WO2006130093A1 Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with seal removing means
12/07/2006	WO2006130089A1 Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with a reinforcing frame
12/07/2006	WO2006130088A1 Arrangement for the treatment of cellulose pulp in a washing apparatus adapted to facilitate service and inspection of the apparatus
12/07/2006	WO2006128950A1 Process for producing mechanical pulp suitable for paper or cardboard making
12/07/2006	WO2005021714A3 Laccases, nucleic acids encoding them and methods for making and using them
12/07/2006	CA2609832A1 Arrangement for the treatment of cellulose pulp
12/07/2006	CA2609831A1 Arrangement for the treatment of cellulose pulp involving seal positioning means
12/07/2006	CA2609463A1 Arrangement for the treatment of cellulose pulp
12/07/2006	CA2609095A1 Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with seal removing means
12/07/2006	CA2607813A1 Arrangement for the treatment of cellulose pulp in a washing apparatus adapted to facilitate service and inspection of the apparatus
12/07/2006	CA2607178A1 Process for producing mechanical pulp suitable for paper or cardboard making
12/07/2006	CA2600752A1 Arrangement for the treatment of cellulose pulp in a washing apparatus arranged with a reinforcing frame
12/06/2006	EP1728917A2 Method and system for energy savings in TMP by high temperature LC/MC refining of pulp
12/06/2006	EP1611281B1 Purification of alkaline washing liquid
12/06/2006	EP1192312B1 Fibrous structures including a fiber bundle and a debonding agent
12/06/2006	CN1873090A Method for consecutive blanching flax paper pulp in high whiteness through multiple stage
12/06/2006	CN1288298C Process for producing kraft pulp
12/05/2006	CA2306374C Method and apparatus for heating pulps
11/2006
11/30/2006	WO2006126983A1 Chlorine dioxide treatment compositions and processes
11/30/2006	WO2006125517A1 Process of bleaching
11/30/2006	CA2826916A1 Chlorine dioxide treatment compositions and processes
11/30/2006	CA2608440A1 Process of bleaching with a preformed transition metal catalyst salt together with hydrogen peroxide
11/30/2006	CA2607827A1 Chlorine dioxide treatment compositions and processes
11/29/2006	CN1871400A High HLB non-ionic surfactants for use as deposition control agents
11/29/2006	CN1287045C Bulky pulp, method for production thereof and converted paper or multi-ply paper using bulky pulp
11/28/2006	US7141143 Method and apparatus for draining fibre pulp suspension
11/28/2006	CA2452944C Use of thinnings and other low specific gravity wood for lyocell products
11/28/2006	CA2143985C Cationic and anionic polyelectrolytes for enhancing the freeness of paper pulp
11/23/2006	US20060264633 Use of manganese, titanium, iron, cobalt, nickel or copper complex compounds having pyrimidinebispyrimidine or triazinebispyrimidine ligands as catalysts for peroxide oxidations involving hard surfaces, waste-printed paper, and papermaking pulp to enhance the action of the peroxides
11/22/2006	CN2839341Y Micro-turbulent efficient sizing and ink floatation tank
11/22/2006	CN1865583A Pulping process for mixed Devil's Rush herb and reed
11/22/2006	CN1865582A Cold-immersion mechanical pulping process for xyloid raw materials
11/21/2006	US7138263 Endoglucanase enzyme NCE5 and cellulase preparations containing the same
11/21/2006	US7138261 An endoglucanase (especially derived from Zygomycetes) and a reducing agent; treating a cellulose fabric with the cellulase preparation to improve a property; deinking waste paper; improving freeness of paper pulp
11/21/2006	US7138035 Process for the selective modification of carbohydrates by peroxidase catalyzed oxidation
11/21/2006	CA2257112C Compositions and methods for inhibiting organic contaminant deposition in pulp and papermaking systems
11/15/2006	CN2837355Y Adhesive bar dewatering device
11/15/2006	CN1863962A Method and device for charging a fiber material suspension
11/14/2006	US7135557 Hypochlorite free method for preparation of stable carboxylated carbohydrate products
11/14/2006	US7135184 strain of the genus Flammulina; obtained by culturing the strain at a pH value exceeding 7; use in staining such as dyeing fibers or hair; activity for bleaching pulp or fibers, removing phenol compounds from liquid wastes, degrading endocrine disruptors, producing phenolic resins; F. velutipes strain
11/14/2006	US7135092 Supplying pulp between two wires; dehydration; sealing edges; prevent spreading; injecting pressurized water through channels
11/09/2006	WO2006119392A1 Ligno cellulosic materials and the products made therefrom
11/09/2006	US20060249265 Treatment of cellulose during bleaching with agent capable of reducing carbonyl groups
11/08/2006	EP1718801A2 Method for reducing the extractives content of high-yield pulps and method for producing bleached high-yield pulps
11/08/2006	EP1718800A1 Sodium sulfate treated pulp
11/08/2006	CN1858343A Method for preparing Broussonetia paperrifervent pulp for producing viscose fiber
11/08/2006	CN1283879C Concentration apparatus for attrition mill
11/02/2006	US20060244220 Sealing device
11/02/2006	EP1716288A1 Modifying cellulose fibres by using amphoteric cellulose derivative
11/01/2006	CN2832886Y Twin-net pulp extruder
11/01/2006	CN2832885Y Centrifugal continuous-discharge pulp washer
11/01/2006	CN1856616A Chemical activation and refining of southern pine kraft fibers
11/01/2006	CN1854388A The production method and pulp maked bamboos
10/2006
10/31/2006	CA2453276C Use of thinnings and other low specific gravity wood for lyocell pulps
10/26/2006	WO2006111607A1 An apparatus for distruibuting a pulp flow
10/26/2006	US20060237153 Printing papers
10/25/2006	EP1590525B1 Bleaching and brightness stabilization of lignocellulosic materials with water-soluble phospines or phosphonium compounds
10/25/2006	EP1266074B1 Method for bleaching mechanical and chemithermomechanical pulp
10/25/2006	CN2830477Y Fiber reduction deinking machine
10/25/2006	CN1851117A Moderate-thick paper pulp pressure stabilizing dual flow-lift tower oxygen bleaching method
10/25/2006	CN1281818C Paper making processes using enzyme and polymer compositions
10/25/2006	CN1281303C Mixing device
10/25/2006	CN1281202C Chemically treated fibers, absorbent structure including the chemically treated fibers and once absorbent produce including the said absorbent structure
10/19/2006	WO2006110751A1 Improved composition and processes for paper production
10/19/2006	US20060231791 Cooking aid for improving the removal of extractives in pulp production, its production and use
10/19/2006	CA2601507A1 Improved compositions and processes for paper production
10/18/2006	EP1711655A1 A method and system for controlling the addition of oxygen gas and alkali during oxygen gas delignification
10/18/2006	CN2828112Y Enclosed floatation deink machine
10/18/2006	CN2828111Y High speed pulp washing machine
10/18/2006	CN1847520A Paper pulp preparing process by means of violent decomposition of hydrogen peroxide in the presence of excessive alkaline matter
10/18/2006	CN1847519A Cotton stalk pulping process with high whiteness of pulp
10/18/2006	CN1280484C Method for making pulp using feather as raw material
10/17/2006	CA2435641C Flowable and meterable densified fiber flake
10/12/2006	US20060229223 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
10/11/2006	EP1088080B1 Recombinant production of cellulase from actinomycetes
10/11/2006	CN1844564A Method for bleaching middle and thick paper pulp by hydrogen peroxide and through double bleaching tower
10/05/2006	WO2005100680A3 Apparatus and method for treating mulch
10/05/2006	US20060219375 Process for producing kraft pulp
10/04/2006	EP1707669A2 Microcrystalline cellulose and method for making
10/04/2006	EP1707668A1 Closed cycle zero discharge oxidizing pulping process
10/04/2006	EP1706536A1 Method for reducing brightness reversion of mechanical pulps and high-yield chemical pulps
10/04/2006	CN1277985C Seal at press rollers
09/2006
09/30/2006	CA2536653A1 Microcrystalline cellulose and method for making
09/30/2006	CA2536651A1 Microcrystalline cellulose and method for making
09/27/2006	EP1704281A1 Process for producing a fibrous product
09/27/2006	EP1703976A2 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
09/27/2006	EP1228098B1 Method for the manufacture of fibres, film and other products from modified soluble cellulose
09/27/2006	CN1839229A Method for treating pulp in connection with the bleaching of chemical pulp
09/27/2006	CN1839227A Multi-stage AP mechanical pulping process with refiner flow line treatment

1 ... 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 ... 103