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 3 - Pulping cellulose-containing materials
Patents for D21C 3 - Pulping cellulose-containing materials (5,020)
01/2013
01/17/2013WO2013008135A1 Method to produce high-resistance cellulose and hemicellulose fibers from lignocellulosic biomass of sugarcane leaves and buds
01/16/2013EP2545217A2 Lipohydrophilic glycerol based polymers as digestion aids for improving wood pulping processes
01/16/2013CN102877342A Method for preparing cellulose nanocrystals
01/16/2013CN102191707B Low temperature rapid pulping process of reed
01/16/2013CN101522985B Ionic liquids for solubilizing polymers
01/09/2013CN102869423A Antifoam compositions
01/09/2013CN102864681A Method for preparing superfine coarse whiting size with general calcite mineral powder
01/09/2013CN102864672A Method for extracting lignin
01/09/2013CN102251422B Method for producing ultrahigh-viscosity refined cotton
01/03/2013WO2013000074A1 Catalytic biomass conversion
01/03/2013US20130000855 Method for manufacturing nanofibrillated cellulose pulp and use of the pulp in paper manufacturing or in nanofibrillated cellulose composites
01/03/2013CA2839348A1 Catalytic biomass conversion
01/02/2013EP2539034A2 Method for deaerating liquids
01/02/2013CN102859066A Production of fermentable sugars and lignin from biomass using supercritical fluids
01/02/2013CN102852028A Method for low carbon cyclic utilization of oil palm waste via RBMP process and manufacture of mechanical paste via continuous bleaching
01/02/2013CN102852015A Production technology of chloride-ion-removed refined cotton
12/2012
12/29/2012CA2804912A1 Integrated system and process for bioproduct production
12/27/2012US20120328758 Enhanced Fiber Additive; and Use
12/27/2012US20120325417 Method of producing cellulose pulp
12/26/2012CN101768887B Circular utilization method of straw in pulping and papermaking processes
12/20/2012WO2012174429A1 Lignin conversion process
12/20/2012WO2012061085A3 Hydrolysis systems and methods
12/20/2012CA2837211A1 Lignin conversion process
12/19/2012CN102828431A Prehydrolysis additive for dissolving pulp production and preparation method thereof
12/13/2012WO2012168513A1 Method for kraft cooking of lignocellulose material with low-sulphide alkaline lyes in the production of pulp with direct incorporation of dihydroxyanthracene disodium salt into the digester
12/12/2012CN102817263A Preparation method for purified cotton with extra-high viscosity
12/12/2012CN102817262A High-yield environment-friendly papermaking and pulping process method and system
12/12/2012CN102154882B Bleaching method of phloem pulp
12/11/2012US8328983 Hemicellose is removed form wood chips using acidic solution extraction; chemical or semichemical pulping to increase hemicellulose; bleaching; same brightness when compared to unmodified Kraft pulp but using about 5 lbs to 15 lbs per ton less of bleaching chemical; paper, paperboard, hygiene article
12/06/2012US20120305207 Method for vapor phase pulping with alcohol and sulfur dioxide
12/06/2012US20120305206 Method for removing ink from paper
12/05/2012CN102808362A Manufacturing method of waterproof and fireproof paper
12/05/2012CN102808347A Preparation method for microcrystalline cellulose
12/05/2012CN102051833B Preparation method of straw matter mechanical pulp
11/2012
11/28/2012EP2526225A1 Production of fermentable sugars and lignin from biomass using supercritical fluids
11/28/2012CN102154926B Method for improving whiteness of paper
11/27/2012US8317975 Product and processes from an integrated forest biorefinery
11/22/2012WO2012158075A1 Compact process for producing prehydrolyzed pulp
11/22/2012CA2837277A1 Compact process for producing prehydrolyzed pulp
11/21/2012CN102174756B Method for preparing chemical fiber pulp
11/21/2012CN102174755B Boiling assistant for preparing high polymerised pulp
11/21/2012CN102154925B Production method of anti-myopia paper
11/21/2012CN102154874B Replacement cooking pulping method
11/15/2012US20120285640 Fibrillated blend of lyocell and cellulosic low dp pulp
11/14/2012EP2521766A1 Tall oil pitch composition, method of producing the same and uses thereof
11/14/2012CN102781534A Method for deaerating liquids
11/14/2012CN101831822B Method for producing paper pulp by adopting cotton stalk peel as raw material
11/13/2012US8308901 Enhanced fiber additive; and use
11/13/2012US8308900 Methods to control lipophilic extractives in acacia wood pulp and fiber
11/07/2012CN101525605B Araboxylan degrading enzyme
11/06/2012US8303772 Method for preparing a grass-type unbleached paper product
11/06/2012US8303767 Methods of pretreating comminuted cellulosic material with carbonate-containing solutions
11/01/2012WO2012147094A1 Method and system for extraction of black liquor from a horizontal tube continuous digester
11/01/2012WO2012110231A8 Integrated process for the selective fractionation and separation of lignocellulose in its main components
11/01/2012US20120276619 Method for recycling paper products glued and/or coated with biodegradable polymers
10/2012
10/31/2012EP2516732A1 Method and arrangement for improving a washing step after completed cooking in a continuous digester
10/31/2012EP2516660A2 Pre-treatment of cellulosic material
10/31/2012CN101451319B Low brightness pulp prepared by ammonium sulfite steam cooking straw raw material, preparation method thereof and use thereof
10/30/2012US8298373 Combined process of peroxide bleaching of wood pulps and addition of optical brightening agents
10/24/2012EP2513372A1 Pulping process
10/24/2012EP2513080A1 Method for producing furfural from lignocellulosic biomass material
10/24/2012CN102747634A Method for preparing modified polyimide fiber papers
10/18/2012US20120261084 System and method for the pumped feed of chips to a continuous digester
10/17/2012CN102736260A Glasses frame using Korean paper
10/17/2012CN102733218A Method for extracting cellulose from tobacco waste based on aluminium chloride process
10/17/2012CN102733217A Method for extracting cellulose from tobacco waste based on water-alcohol oxidation process
10/17/2012CN102733216A Method for reducing masson pine chemical-mechanical pulp resin content through alkali treatment
10/17/2012CN101748630B Acid-free pre-hydrolysis enzymolysis-free method for preparing bamboo pulp of Dendrocalamus giganteus Munro series
10/16/2012US8287691 Enhanced fiber additive; and use
10/11/2012WO2012137076A1 Method and system for efficient production of dissolving pulp in a kraft mill producing paper grade pulp with a continuous type digester
10/11/2012US20120258509 Methods and systems for pretreatment and processing of biomass
10/11/2012CA2832648A1 Method and system for efficient production of dissolving pulp in a kraft mill producing paper grade pulp with a continuous type digester
10/10/2012CN102720085A Preparation method of wheat straw hood chemimechanical pulp based on ammonia process pre-treatment
10/10/2012CN102720084A Digesting process for modifying natural bamboo pulp and bleached wood pulp into dissolving pulp by compounding
10/04/2012WO2012135001A2 Volatile debonder formulations for papermaking
10/04/2012WO2012134358A1 Method and arrangement for adding treatment liquors to cellulose material in a down flow vessel
10/04/2012WO2012131665A1 Lignocellulose processing
10/04/2012WO2012130957A1 Method for producing cellulose-containing mass for producing composite material
10/04/2012US20120247696 Pulping process
10/04/2012CA2830744A1 Volatile debonder formulations for papermaking
10/03/2012EP2504486A1 Method and system for thin chip digester cooking
10/03/2012CN1880573B Methods for preparing alkali cellulose and cellulose ether
10/03/2012CN102713054A Method and arrangement for improving a washing step after completed cooking in continuous digester
10/03/2012CN102704323A Bamboo reed dissolving pulp pretreating method
10/03/2012CN102704300A Method for reproducing paper pulp used for filter stick core paper by utilizing filter stick waste
10/03/2012CN102704299A Additive for physical straw pulping and use method thereof
10/03/2012CN102704298A Process and device for pulping by reversely extracting grass raw materials
10/03/2012CN102704297A Method for separating non-wood lignocellulosic biomass lignin with composite solvents
10/03/2012CN102704296A Process for pretreating straw raw materials
10/03/2012CN102277762B Process for producing dissolving pulp by utilizing bleaching wood pulp board
10/03/2012CN101760987B High-air-permeability mixed pulp and household paper made thereof
10/03/2012CN101760974B Process for performing ammonium sulfite pulping by using sulfur-containing flue gas absorber
10/03/2012CN101654882B Pulping process of grass fibers
10/03/2012CN101613970B Method for preparing bagasse dissolving pulp and pre-extracting hemicellulose and product thereof
10/03/2012CN101565907B Bagasse alkaline pulping method by pre-extracting hemicellulose and product thereof
09/2012
09/27/2012WO2012128901A1 Vapor phase hydrolysis vessel and methods related thereto
09/27/2012CA2830008A1 Vapor phase hydrolysis vessel and methods related thereto
09/26/2012CN102691222A Cooking process for compound modification of bleached bamboo paper pulp and cotton paper pulp into dissolving pulp
09/26/2012CN101535562B Method for an energy efficient production of cellulose pulp in a continuous digester
09/25/2012US8273212 Method for kraft pulp production where hemicelluloses are returned
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