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)
01/1996
01/03/1996EP0690168A2 Arrangement for lowering the noise level in connection with the cooling layer in a pulp dryer
01/03/1996EP0689626A1 Wood pulp processing apparatus and method
01/03/1996EP0689625A1 Pitch degradation with white rot fungi
01/02/1996US5480801 Purified PH neutral Rhizoctonia laccases and nucleic acids encoding same
01/02/1996US5480546 Rotating screen drum with a stainless lining
01/02/1996US5479792 Heating arrangement
01/02/1996CA1337843C Process for oxygen bleaching
12/1995
12/28/1995WO1995035408A1 Delignification of chemical pulp with peroxide in the presence of transition metal
12/28/1995WO1995035407A1 Delignification of chemical pulp with peroxide in the presence of a transition metal
12/28/1995WO1995035406A1 Delignification of chemical pulp with peroxide in the presence of a transition metal
12/28/1995WO1995035405A1 Process for delignification and bleaching of unbleached cellulose suspensions or such which have been pre-bleached in an alkaline medium
12/28/1995WO1995035331A1 Dithio-containing anti-yellowing agents for pulp and paper
12/28/1995CA2169448A1 Dithio-containing anti-yellowing agents for pulp and paper
12/27/1995EP0688562A1 Cosmetic
12/26/1995US5478356 Cyanoamines and compositions useful for bleaching
12/21/1995WO1995034716A1 Method for producing cellulose pulp and use of a compound in the method
12/21/1995WO1995034710A1 Individualized cellulosic fibers crosslinked with polyacrylic acid polymers
12/21/1995WO1995034662A1 Thermostable xylanases
12/21/1995WO1995034628A1 Bleach activation
12/21/1995CA2191226A1 Method for producing cellulose pulp and use of a compound in the method
12/20/1995EP0687322A1 Chemical paper pulp delignification method
12/20/1995EP0687321A1 Method of bleaching pulp with chlorine-free chemicals
12/19/1995US5476790 Inoculation with schizophyllum trichaptum and phanerochaete
12/19/1995US5476789 Composition containing strains of Ophiostoma piliferum and a method of using the composition to reduce the pitch content of pulpwood or pulp
12/19/1995CA2017807C Process for bleaching lignocellulose-containing pulps
12/14/1995WO1995033884A1 Ozone bleaching
12/14/1995WO1995033836A1 Phosphonyldipeptides useful in the treatment of cardiovascular diseases
12/14/1995CA2191718A1 Phosphonyldipeptides useful in the treatment of cardiovascular diseases
12/14/1995CA2190503A1 Ozone bleaching
12/13/1995EP0686216A1 Inhibition of hydrogen peroxide decomposing enzymes, e.g. catalase and peroxidase during bleaching of cellulose fibers
12/13/1995EP0686193A1 Alkali-tolerant xylanases
12/12/1995US5474654 Process for gas phase delignifying wood pulp using chlorine dioxide at subatmospheric pressure
12/12/1995CA2038651C Method and apparatus for bleaching pulps
12/06/1995EP0685593A2 Sulfonated cellulose and method of preparation
12/06/1995EP0663030A4 Improved bleaching of high consistency lignocellulosic pulp.
12/06/1995EP0627029A4 Pulp bleaching apparatus and method.
12/05/1995US5472874 Pitch degradation with white rot fungus
12/05/1995US5472572 Reactor for bleaching high consistency pulp with ozone
12/05/1995US5472567 Method of chemically reacting a slurry with a gas
12/05/1995CA2014563C Hydrogen peroxide reinforced oxygen delignification
11/1995
11/30/1995WO1995032332A1 Process for removal of metal compounds in lignocellulosic pulp
11/29/1995EP0683832A1 Process for crosslinking of cellulosic fibers
11/29/1995EP0683686A1 Multistage disc filter
11/29/1995EP0672210A4 Method for controlling an ozone bleaching process.
11/28/1995US5470481 Method and apparatus for recovering wash water from pulp and paper mill effluent
11/28/1995US5470432 Method and arrangement for the treatment of a fiber suspension
11/28/1995CA2138193A1 Sulfonated cellulose and method of preparation
11/28/1995CA2127654C Oxygen delignification method incorporating wood pulp mixing apparatus
11/28/1995CA2023904C Deinking and bleaching secondary fiber
11/23/1995WO1995031599A1 Method for preparing delignified and bleached chemical paper pulps
11/23/1995WO1995031598A1 Delignification and bleaching method for chemical paper pulp
11/23/1995DE19509401A1 A process for bleaching wood and cellulose pulp intermediates
11/22/1995EP0683265A1 Pitch degradation with white rot fungus
11/22/1995EP0682696A1 Oxidising agents
11/22/1995EP0682695A1 Oxidising agents.
11/22/1995EP0682694A1 Oxidising agents
11/21/1995CA2149807A1 Pitch degradation with white rot fungus
11/21/1995CA2031850C Method of bleaching pulp
11/21/1995CA2031848C Method of bleaching pulp
11/15/1995EP0681625A1 Improved process and composition for delignifying a lignocellulosic material
11/15/1995EP0681624A1 Method for chlorine-free bleaching of pulp with acetic acid as acidifying agent
11/15/1995EP0579744A4 Method for reducing colored matter from bleach effluent using a dzd bleach sequence
11/15/1995EP0561786A4 Bleaching chemical pulp using chlorine/chlorine dioxide then ozone
11/15/1995CN1111665A Phosphate-free reduction bleching formulation
11/14/1995US5466338 Use of dispersion polymers for coated broke treatment
11/14/1995US5466335 Paper pulp washing
11/14/1995US5466334 Method and apparatus for mixing a treatment agent with a pulp suspension
11/09/1995WO1995030047A1 Oxygen bleaching of cellulosic pulps
11/09/1995WO1995030046A1 Method of treating a liquid-containing fibre material and apparatus for carrying out the method
11/09/1995WO1995029998A1 Thermostable xylanases
11/09/1995WO1995029997A1 Use of a thermostable enzyme as a feed additive
11/09/1995CA2188568A1 Oxygen bleaching of cellulosic pulps
11/09/1995CA2188558A1 Use of a thermostable enzyme as a feed additive
11/08/1995EP0680376A1 Varying annular fluidization zone for increased mixing efficiency in a medium consistency mixer
11/08/1995CN1111306A Multiple filter dynamic washer
11/07/1995US5464563 Bleaching composition
11/07/1995US5464502 Anionic sulfonate surfactants in the washing and pulping operation
11/07/1995US5464501 Bleaching recycled pulp with a reductive-oxidative sequence
11/02/1995WO1995029291A1 Suspension-treating device
11/02/1995EP0679760A1 Process for bleaching of lignocellulose-containing pulp
11/02/1995EP0679183A1 Enhancement of enzyme reactions
11/02/1995CA2188439A1 Suspension-treating device
10/1995
10/31/1995US5462641 Separation of delignified pulp from metal ion solution, bleaching pulp, then adsorption of metal ions onto bleached pulp yields metal ion free liquid for recycling
10/31/1995US5461888 Suspension-treating device
10/26/1995WO1995028517A1 Method and apparatus for controlling bleaching chemical usage
10/25/1995EP0576454B1 Apparatus for mixing a suspension of cellulosic fibrous material and fluid
10/24/1995US5460696 Oxygen delignification method incorporating wood pulp mixing apparatus
10/24/1995US5460019 Washer
10/19/1995WO1995027825A1 Preparation process of paper for increasing filler contents and enhancing scott internal bond strength
10/18/1995EP0677611A1 Method of reducing fluorescence in deinked pulp
10/18/1995EP0677124A1 Process in association with pulp bleaching.
10/18/1995EP0677122A1 A method of producing mechanical and chemi-mechanical pulp
10/17/1995US5458737 Quaternary compounds as brightness enhancers
10/16/1995CA2147204A1 Method of reducing fluorescence in deinked pulp
10/16/1995CA2121375A1 In situ electrochemical bleaching of thermomechanical pulp
10/12/1995WO1995027100A1 Method for complex treatment of pulp in conjunction with a chlorine dioxide stage
10/11/1995EP0675981A1 Chlorine dioxide generation for a zero discharge pulp mill
10/05/1995WO1995026440A1 Cellulosic products using high-bulk cellulosic fibers
10/05/1995WO1995026438A1 Polyoxometalate delignification and bleaching
10/05/1995WO1995026397A1 Alkaline bacillus amylase
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