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Matches 251 - 300 out of 1,017

Document Document Title
WO/2008/011523
Oxidative compositions and processes that preserve and enhance the brightness and improve color of pulp or paper when applied during different stages of the papermaking process are identified. The oxidative composition and method maintai...  
WO/2007/149836
In general, the present disclosure is directed to compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process. In one particular embodiment, for instance, the present disclosure...  
WO/2007/140837
The invention relates to a method for producing fibrous material with a lignin content of at least 15% for softwood, at least 12% for hardwood, or at least 10% for annual plants, relative to the oven-dry fiber mass in each case, consisti...  
WO/2007/140838
The invention relates to a lignocellulosic fibrous material made of wood with a breaking length of more than 8 km at 15 °SR and a lignin content of at least 15%, relative to the unbleached oven-dry fibrous material, for softwood, and wi...  
WO/2007/140838
The invention relates to a lignocellulosic fibrous material made of wood with a breaking length of more than 8 km at 15 °SR and a lignin content of at least 15%, relative to the unbleached oven-dry fibrous material, for softwood, and wi...  
WO/2007/140839
The invention relates to a method for producing fibrous material consisting of the following steps: production of a chemical solution with less than 25% sulfite (calculated as NaSO3), relative to the oven-dry quantity of the lignocellulo...  
WO/2007/140837
The invention relates to a method for producing fibrous material with a lignin content of at least 15% for softwood, at least 12% for hardwood, or at least 10% for annual plants, relative to the oven-dry fiber mass in each case, consisti...  
WO/2007/140839
The invention relates to a method for producing fibrous material consisting of the following steps: production of a chemical solution with less than 25% sulfite (calculated as NaSO3), relative to the oven-dry quantity of the lignocellulo...  
WO/2007/137127
A method of pretreating comminuted fibrous material with sodium carbonate and then cooking the pretreated material in the presence of anthraquinone (AQ) is provided. The resulting pulp produced has a higher yield, enhanced strength, and ...  
WO/2007/137127
A method of pretreating comminuted fibrous material with sodium carbonate and then cooking the pretreated material in the presence of anthraquinone (AQ) is provided. The resulting pulp produced has a higher yield, enhanced strength, and ...  
WO/2007/128024
The invention relates to a method for producing a type of pulp from a cellulose starting material by kraft pulping, comprising the step of cooking the starting material with a cooking liquor. The method according to the invention is char...  
WO/2007/129921
An integrated process for the production of ethanol from woody plant material is provided, the process comprising: contacting a continuous flow of the plant material with a counter-current continuous flow of an aqueous ethanol solution a...  
WO/2007/128027
The invention relates to a method for producing cellulose from a cellulose starting material. The method comprises a step during which the starting material is digested with a digesting liquor, and subsequent further processing steps, su...  
WO/2007/107055
A kind of degradable Sanitary napkin or liner, including a toplayer, a backlayer and an absorbent layer positioned between the toplayer and the backlayer, wherein the backlayer assumes the two-layer construction formed of paper waterproo...  
WO/2007/102638
The present invention relates to a method for producing xylose from bamboos, and more particularly to a method for producing xylose from bamboos, which provides a solution to the economic and environmental problems occurring in the prior...  
WO/2007/092359
Embodiments of a diatom composition and method for its use in making paper products is described. One embodiment of the disclosed method comprises providing an aqueous pulp composition, typically a pulp composition comprising furnish der...  
WO/2007/092359
Embodiments of a diatom composition and method for its use in making paper products is described. One embodiment of the disclosed method comprises providing an aqueous pulp composition, typically a pulp composition comprising furnish der...  
WO/2007/071387
The invention relates to a plant fibre provided with hardener-free novolak. The plant starting materials are broken down into thermomechanically decomposing aggregates or chemo-thermomechanically decomposing aggregates, in the presence o...  
WO/2007/071387
The invention relates to a plant fibre provided with hardener-free novolak. The plant starting materials are broken down into thermomechanically decomposing aggregates or chemo-thermomechanically decomposing aggregates, in the presence o...  
WO/2007/073312
Special demands are placed on the properties of short-fibred cellulose pulp when this type of pulp is used for the manufacture of paper, and a paper manufacturer primarily desires a pulp with predictable and constant properties. The pres...  
WO/2007/071187
A method for making paper pulp from straw, which utilizes the acute reaction of hydrogen peroxide and alkali substance and the heat energy released from it to make paper pulp. The method comprises the following steps: crushing wheat, ric...  
WO/2007/070527
A process of treating a cellulose-lignin pulp. In an ozone stage, the pulp is contacted with ozone to bleach and delignify the pulp. The ozone stage is conducted without the addition of a peroxide bleaching agent. A chelant is introduced...  
WO/2007/070527
A process of treating a cellulose-lignin pulp. In an ozone stage, the pulp is contacted with ozone to bleach and delignify the pulp. The ozone stage is conducted without the addition of a peroxide bleaching agent. A chelant is introduced...  
WO/2007/065241
A continuous and batch system to produce cellulose, native lignin and unicellular protein from any form of vegetation in a closed process. The biomass is mixed in the impregnate solution of nitric acid and/or ammonium hydroxide and water...  
WO/2007/064293
The invention concerns an arrangement and a method for the continuous cooking of chemical cellulose pulp in a continuous digester system (100). The continuous digester system (100) comprises an inlet (102) for the feed of a chips suspens...  
WO/2007/051269
Improvements in a process for rapid acid hydrolysis of lignocellulosic material and in a hydrolysis reactor, said lignocellulosic material being fed in different levels of a reactor (10) and contacted with flows of lignin organic solvent...  
WO/2007/017553
The invention refers to a method where lactic acid, its water solution, lactide, lactic acid oligomer, polylactic acid or mixture thereof is used for the degradation of cellulose based biomass, such as natural structure of wood, and tran...  
WO/2007/008689
The present invention is a method for producing a pulp from a fibrous lignocellulose material or source using a treatment or pretreatment step which exposes the material to oxalic acid derivatives, particularly dialkyl ester derivatives,...  
WO/2006/134126
The invention provides a process for organosolv pulping, wherein solid lignocellulosic feed material is heated at a temperature in the range of from 50 to 210 °C in a solvent to obtain a solid cellulosic fraction comprising at least 50 ...  
WO/2006/132462
The present invention relates to a manufacturing method of mechanical pulp from stalks of corn, an annual plant, by adding a digesting agent and, prior to, during or following addition of the digesting agent, completely separating fibrou...  
WO/2006/129906
The present invention relates to a method for producing mechanical pulp from stalks of corn, an annual plant. Pulping and bleaching are performed simultaneously by adding a salt compound selected from a group consisting of sodium carbona...  
WO/2006/128304
A continuous process for treating a lignocellulosic feedstock is provided. This method comprises pretreating the lignocellulosic feedstock under pressure in a pretreatment reactor at a pH between about 0.4 and about 2.0. One or more than...  
WO/2006/126983
The present invention relates to methods and compositions for chlorine dioxide delignification and/or bleaching processes by reacting pulp with chlorine dioxide and a peroxidase and/or a laccase.  
WO/2006/121634
An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pu...  
WO/2006/117295
The invention proposes an installation (10) in which the impregnation and fractionation of the raw material (MP) are conducted at atmospheric pressure, characterized in that it comprises means (18, 20) for transferring the raw material (...  
WO/2006/116126
Methods for using ionic liquids to extract and separate a biopolymer from a biomass containing the biopolymer are disclosed. Methods for dissolving a biopolymer in an ionic liquid are also disclosed. A recovery solvent is used to reduce ...  
WO/2006/115310
Disclosed is a process for producing pulp utilizing bamboo, comprising finely cutting the bamboo into short segments and subjecting the cut bamboo to screening and washing processes to thereby produce dissolving pulp capable of achieving...  
WO/2006/116126
Methods for using ionic liquids to extract and separate a biopolymer from a biomass containing the biopolymer are disclosed. Methods for dissolving a biopolymer in an ionic liquid are also disclosed. A recovery solvent is used to reduce ...  
WO/2006/111604
The objective of this invention is a method for separating cellulosic fibres, hemicellulose and lignin from parts of plants containing these, such as stems, leaves and seed coats or hulls of cereal, oilseed, fibre or grassy plants. After...  
WO/2006/111604
The objective of this invention is a method for separating cellulosic fibres, hemicellulose and lignin from parts of plants containing these, such as stems, leaves and seed coats or hulls of cereal, oilseed, fibre or grassy plants. After...  
WO/2006/113519
A method of sizing paper for use in applications which require resistance to liquids comprising incorporating in the paper a size composition comprising one or more alkenyl succinic anhydride (ASA) compounds prepared from the reaction of...  
WO/2006/104448
A thermostable, alkaline active xylanase was purified from an alkaliphilic Bacillus halodurans S7, isolated from a soda lake in the Ethiopian Rift Valley. The molecular weight and the pi of this enzyme were around 43 kDa and 4.5, respect...  
WO/2006/103317
The invention relates to an improved process to break down lignin macromolecules and liberating cellulose fibers in lignocellulosic material using delignifying reactants with a gaseous organic agent as a heating and reaction-accelerating...  
WO/2006/101449
The invention concerns a method and an arrangement for the feed of a chips suspension from one vessel to a subsequent digester in a continuous cooking process for the production of chemical cellulose pulp, where the vessel (101) has an i...  
WO/2006/099029
A oxidative solution (Ox-B, a solution of no less than 5:1 sodium hypochlorite: hydrogen peroxide) was found to remove both lignin and hemicellulose from sugarcane bagasse. After treatment the cellulosic residue readily separated from th...  
WO/2006/088818
Methods are provided for altering the tack of an adhesive material by contacting the adhesive material with an amount of a cyclodextrin compound effective to reduce the tack of the adhesive material. In a preferred embodiment, the method...  
WO/2006/086861
The present invention relates to an enhanced process for sugar production through the acid hydrolysis of cellulosic and lignocellulosic materials characterized by the treatment of these materials in three steps. In the first step, it is ...  
WO/2006/083605
A method and kit for rice fiber extraction is provided. In an exemplary embodiment, the method may include treating rice straw with an alkali solution such as a sodium hydroxide solution. Further, the method may include extracting coarse...  
WO/2006/072653
The quality of the raw material in a pulping process, wood chips, varies due to variations in its origin. The variation in chip quality will result in variations in the cooked pulp as well as problems in the operation of a digester. The ...  
WO/2006/053939
The present invention describes a new method and associated devices for the fabrication of pulp from wood, and other cellulose containing natural materials. The fabrication is fast, environmentally friendly, and economical. Process can b...  

Matches 251 - 300 out of 1,017