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 5 - Other processes for obtaining cellulose, e.g. cooking cotton linters
Patents for D21C 5 - Other processes for obtaining cellulose, e.g. cooking cotton linters (5,432)
03/1998
03/10/1998US5725732 Process for treating hardwood pulp with an enzyme mixture to reduce vessel element picking
03/10/1998US5725730 Aqueous dispersions containing carboxylic acids and/or resinic acids for deinking printed wastepaper
03/05/1998WO1998009017A1 Method of agglomerating stickies in an aqueous slurry of wastepaper
03/05/1998WO1998008940A1 A novel endoglucanase
03/05/1998WO1998008610A1 A process for purification of a fibre suspension
03/05/1998CA2264185A1 A process for purification of a fibre suspension
03/04/1998EP0778908A4 Thin mat washing of cellulosic pulp
03/03/1998US5723021 Method for inhibiting deposition in pulp and papermaking systems using a composition comprising of polyvinyl alcohol, gelatin and cationic polymer
02/1998
02/26/1998WO1998007922A1 Method for lowering the level of oxalic acid
02/25/1998EP0825294A1 Multicomponent system for modifying, decomposing or bleaching lignin, lignin-containing materials or similar substances and method of using this system
02/25/1998EP0825293A1 Enhanced removal of hydrophobic contaminants from water clarification systems
02/25/1998EP0825254A2 Alkalophilic Bacillus sp. AC13 and xylanase obtainable therefrom
02/25/1998EP0824617A1 A method for treating wood with bacteria
02/20/1998CA2213367A1 Enhanced removal of hydrophobic contaminants from water clarification systems
02/19/1998WO1998006892A1 Enzymatic freeness enhancement
02/18/1998EP0824160A1 Process for the manufacture of paper making pulp
02/18/1998EP0823949A1 Process and composition for deinking waste paper
02/18/1998CN1173904A Microfibrillated cellulose and method for preparing same from primary wall plant pulp, particularly sugar beet pulp
02/17/1998US5718837 Mixture containing a persulfate and a carbonate, bicarbonate or a sesquicarboante
02/17/1998US5718801 Using nonionic surfactants
02/12/1998WO1998005818A1 Multi-component system for modifying, decomposing, or bleaching lignin, lignin-containing materials or similar substances and process for its application
02/11/1998EP0823005A1 Process for controlling the deposit of adhesive impurities from paper material suspensions
02/11/1998EP0822859A1 Compositions containing diol and/or diol alkoxylate
02/11/1998EP0738341B1 Collector intended to be used in deinking of waste paper according to the flotation process
02/05/1998WO1998004775A1 Use of complexing agents for cellulose and wood bleaching, paper production and used paper deinking
02/05/1998WO1998004774A1 Method and apparatus for bleaching wood pulp, especially containing waste paper
02/05/1998DE19631150A1 Effective de-inking cellulose printing substrate with cationic surfactant without discoloration
02/05/1998DE19631131A1 Mehrkomponentensystem zum Verändern, Abbau oder Bleichen von Lignin, ligninhaltigen Materialien oder ähnlichen Stoffen sowie Verfahren zu seiner Anwendung Multi-component system for modifying, degrading or bleaching lignin, lignin-containing materials or similar substances and to processes for its application,
02/05/1998CA2260935A1 Method and apparatus for bleaching wood pulp, especially containing waste paper
02/04/1998CN1172500A Amylase variants
02/03/1998US5714040 Method for recovering fiber from printed wastepaper
01/1998
01/29/1998DE19630278A1 Komplexbildner für die Zellstoff- und Holzstoffbleiche, die Papierherstellung sowie das Deinking von Altpapier Complexing agents for the pulp and pulp bleaching, paper-making, as well as the inking of waste
01/28/1998EP0821099A1 Use of hydrophilic dispersion polymers for coated broke treatment
01/28/1998EP0820544A1 Treatments for inhibiting deposition in papermaking systems
01/27/1998US5712233 Alkoxylate surfactant compositions and the use thereof in paper deinking
01/27/1998US5711945 Spraying pulp of southern pine and aspen with inoculum of bacteria, reducing discoloration caused by fungi
01/22/1998WO1998002612A1 Biopulping with phlebia subserialis
01/21/1998EP0819190A1 Deinking method
01/21/1998EP0644965B1 Bleaching recycled pulp with ozone and hydrogen peroxide
01/20/1998US5710047 Method for monitoring growth and detection of environmental stress in plants
01/15/1998WO1998001617A1 Methods for inhibiting organic contaminant deposition in pulp and papermaking systems
01/15/1998CA2249372A1 Methods for inhibiting organic contaminant deposition in pulp and papermaking systems
01/13/1998US5707489 Pulping wast paper, slurrying, thickening, filtration then cleaning to remove impurities
01/07/1998EP0815209A1 Novel endoglucanases
01/07/1998EP0815208A1 Amylase variants
01/07/1998EP0815175A1 Recycling of mineral fillers from the residue of a paper deinking plant
01/07/1998EP0689625B1 Pitch degradation with white rot fungi
01/06/1998US5705542 Waste liquor derived from chemical thermal pulping of particle boards and fibreboards containing bonding agents
01/06/1998US5705383 Inoculating log with schizophyllum, trichaptum and/or phanerochaete fungi; conserves electricity
01/06/1998US5705216 Production of hydrophobic fibers
01/06/1998US5705030 Washing feathers, removal of solvent and removal of fibers
12/1997
12/29/1997EP0813631A1 Method and apparatus for treating filler-containing material such as recycled fibers
12/29/1997EP0813629A1 Process for producing short-fibered softwood pulps
12/24/1997WO1997048850A1 Deinking process
12/24/1997WO1997048730A1 Methods for processing bacterial cellulose
12/24/1997WO1997048493A1 Pulp decontamination apparatus and method of use
12/24/1997CA2258786A1 Deinking process
12/23/1997US5700769 Electrone acceptor is 2,2-azino-bis/3-etylbenzothiazoline-6-sulfonate; inhibits the transfer of textile dye from first dyed fabric to second fabric when washed together
12/17/1997EP0813063A1 Method of controlling equipment for deinking paper pulp, and device for continuously measuring the quantity of particles in a liquid
12/17/1997CN1167854A Method for producing regenerated newsprint using waste paper
12/16/1997CA2098092C Method of treatment of waste paper of the like
12/11/1997WO1997046754A1 Deinking process
12/11/1997WO1997046753A1 Deinking process
12/10/1997EP0811089A1 System and method for recycling materials
12/10/1997CN1167181A Biological mechanical straw pulp technology and special equipment
12/09/1997US5696068 Isolated culture product hydrolase enzyme use in detergents, papermaking, pulping
12/09/1997US5695603 Deinking agent with polyoxyalkylene group consisting of specific block and random arrangement units and method for reclaiming waste paper using same
12/04/1997WO1997045186A1 Novel aromatic and aliphatic sulfonates and properties and applications thereof
12/04/1997CA2228430A1 Novel aromatic and aliphatic sulfonates and properties and applications thereof
12/03/1997EP0809731A1 Process for recovering raw materials from a flow of residual or collected materials during paper manufacture and plant therefor
12/02/1997US5693518 Enzymes with xylanase activity from Aspergillus aculeatus
11/1997
11/27/1997WO1997044519A1 Compositions and methods for inhibiting deposits in pulp and papermaking systems
11/27/1997WO1997044185A1 Apparatus for pulping and deinking
11/27/1997DE19620952A1 Improving pulp whiteness in alkali de-inking process
11/27/1997CA2253520A1 Apparatus for pulping and deinking
11/25/1997US5691193 Using oxidative enzymes and hysrogen peroxide
11/19/1997EP0806978A1 Use of alkoxylation products of epoxidized fats as antifoaming agents
11/18/1997US5687923 Gradual pressure applying type de-inking device for paper material
11/18/1997CA2104280C Process for deinking wastepaper utilizing organoclays formed in situ
11/11/1997US5685952 Deinking of paper using magnetic forces
11/05/1997EP0805232A2 A method for preparing a blade-coated paper and a blade-coated paper product
11/05/1997EP0805231A2 A method for preparing paper and a paper product
11/05/1997EP0804505A1 Method and composition for providing repulpable moisture vapor barrier coating for flexible packaging
11/04/1997US5683911 Method of enhancing the delignification and/or bleaching of pulp
11/04/1997US5683590 Treatment of waste paper
11/04/1997CA2013321C Method of producing fluff pulp with improved defibration properties
10/1997
10/30/1997WO1997040194A1 Improved method for biological pretreatment of wood chips
10/30/1997WO1997040087A1 Process for preparing water-soluble, polyamino polycarboxylic acids
10/29/1997EP0803007A1 A method and apparatus for bleaching secondary fibres
10/28/1997US5681732 Cloning and expression of acetyl xylan esterases from fungal origin
10/28/1997US5681480 Dewatering of aqueous suspensions
10/22/1997EP0802275A1 Process to improve the whiteness of paper pulp
10/21/1997US5679221 Pulping recyclable paper material, removing contaminants, pressing, adding polymeric flocculant to fluid to agglomerate soluble aluminum-based material, transferring to clarifier, removing and disposing of aluminum, reclaiming fluid
10/21/1997CA2001540C Application of multiple enzyme blend to control industrial slime
10/21/1997CA1339504C Oxygen delignification and enzyme treatment
10/16/1997WO1997038158A1 Persulfate-based system for repulping high kappa wet strength broke
10/15/1997EP0801168A1 Method and apparatus for recycling laminated film
10/14/1997US5677161 Delignification of wood pulp in presence of xylanase enzyme produced by aerobic fermentation of bacillus stearothermophillus strain or mutant
10/09/1997WO1997037007A1 Enzyme multimer and process of producing same
10/09/1997CA2187604A1 Method and apparatus for recycling laminated film
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