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Matches 601 - 650 out of 1,000

Document Document Title
WO/1987/003022
Mechanical pulp intended for coated light weight paper (LWC), magazine paper or the like made as follows. Impregnation and preheating of the material, refining in a double-disc refiner, bleaching, refining in a single-disc refiner and sc...  
WO/1987/002721
Method for the separation of gases from the cooking liquor of cellulosic pulp during cooking, in which method cooking liquor and, along with it, gases and extract materials are passed through a screen (4) placed on the wall of the digest...  
WO/1987/001402
A method for the production of cellulosic pulp comprises defibration of a fibrous raw material consisting of wood chips, straw, bagasse, reed or the like. The fibrous raw material is impregnated by an aqueous solution of sodium carbonate...  
WO/1986/005529
Lignocellulosic raw material is pulped with a cooking liquor containing organic peroxyacids, such as peroxyformic acid or peroxyacetic acid, and the defibred pulp is bleached with an alkaline solution containing hydrogen peroxide, the pH...  
WO/1986/002393
A process of manufacturing cellulose pulp from wood by division with sulphite cooking liquor containing additions of sulphide and in the presence of a quinonoide or hydroquinonoide compound. According to the invention, the mole ratio bet...  
WO/1986/001843
A method of obtaining cellulase deficient strains which have great ability to degrade lignin at the same time. The method comprises crossing a homokaryotic cellulase deficient mutant of a white-rot fungus having a full sexual cycle with ...  
WO/1985/004409
Procedure for recovery of soluble carbohydrates present in wood, in connection with the alkaline cellulose digesting process. According to the invention, recovery of carbohydrates takes place at the initial phase of the cellulose digesti...  
WO/1985/002423
Method for the production of cellulose by the batch cooking process, wherein the digester is filled with chips and cooking liquor, and the batch is cooked at elevated temperature and pressure in order to obtain a delignified cellulose pu...  
WO/1985/000133
Chemical treatment of bulky organic materials, in particular straw and other biomass, with volatile chemicals, such as NH3, SO2, HF, HCl, which is added to the material before, during or after a (semi)continuous compression, in particula...  
WO/1984/004937
A process for the chemical pulping of lignocellulosic material, wherein said lignocellulosic material is subjected to an alkaline nitrate cooking procedure at a pH of 11 to 13,5 in the presence of an aluminium salt.  
WO/1984/003527
Preparation of cellulose pulp by treating lignocellulose material such as wood, bagasse, etc. in solid phase after impregnation with a chemical reactant, the quantity of aqueous solution during such treatment being very much reduced, fro...  
WO/1984/003286
Raw sugar-beet pulp impregnated with acidified water is subjected to a succession of alternated compressions and decompressions. This mechanical stress causes a sort of retting of the pulp fibers, that is to say an effect such that they ...  
WO/1984/003304
Comminuted cellulosic or starch containing materials, which may or may not contain lignin, are partially or totally hydrolysed or saccharified by an improved organosolv process using an aqueous acetone solvent mixture containing a small ...  
WO/1984/002428
A battery system (10, 110) wherein an electrolyte solution of lithium hydroxide dissolved in seawater is circulated through a battery cartridge (11, 111). The system is placed under pressure. A portion of the electrolyte mixture is disch...  
WO/1983/003435
In a pulping process comprising: a step (2) of digesting a lignocellulosic substance (F) using a digesting liquid; steps (3, 4) of separating the digested product into pulp and a waste digesting liquid; steps (5, 9) of treating the waste...  
WO/1983/002469
The process involves selection of a lignin-containing fiber source, having a lignin content of at least about 10 %, and thermomechanically pulping the fiber source under temperature/pressure conditions of 300oF-350oF/ 50 psig- 120 psig a...  
WO/1983/002125
A method for delignifying ligno-cellulosic materials and efficiently separate from each other the constituents thereof. Said materials which optionally may be prehydrolized are heated in an aqueous acid medium in the presence of phenol c...  
WO/1983/001469
Preparation of polysulphide for treatment of wood chips so that the wood consumption is reduced in kraft digestion of paper pulp. In an impregnation stage the wood chips are caused to react with black liquor, or black liquor components c...  
WO/1982/003409
Comminuted cellulosic materials which may or may not contain lignin are partially or totally hydrolyzed or saccharified by an improved organosolv process using an aqueous acetone solvent mixture containing a small amount of an acidic com...  
WO/1982/002414
A silicon defoamer comprising silica or silicate made hydrophobic by treatment with a hydrophobic alcohol at a temperature above 100 C until the silica or silicate and the hydrophobic alcohol react, and the use of a defoaming composition...  
WO/1982/001901
Oxidized kraft white liquor is used as a pulping liquor, in excess, to give a residual spent liquor pH of more than 12 so that the resulting pulp quality and colour is equivalent to that of NSSC pulps.  
WO/1982/001902
Procede de pulpage du bois et de l'ecorce dans de l'acide formique avec une concentration d'au moins 35 , la concentration ideale se situant entre 65 et 90 , avec reflux a la pression atmospherique, pour produire de la pulpe de bois et d...  
WO/1982/001568
A method for manufacturing wood pulp which comprises pulping wood with a mixture of ethanol and sodium hydroxide and wood pulp manufactured in accordance with the method.  
WO/1982/001019
A process to produce pulp from vegetable, cellulose-containing fibrous material such as coniferous wood, hardwood, straw, bagasse etc., the fibrous material being treated in several stages. In a first stage the fibrous material is impreg...  
WO/1982/000483
A high yield of a high quality pulp is obtained by cooking fragmented lignocellulose material at a temperature of 180 to 240 C with a mixture of methanol or ethanol and water containing 80 to 98 percent by volume of the alcohol, the mixt...  
WO/1981/003505
Method for selectively defiberizing and delignifying lignocellulose employing a novel alkaline pulping system. The subject pulping system includes a pulping liquor comprising water, a water-miscible organic reagent, and a sulfide or bisu...  
WO/1981/000267
A process for making defibered pulp material comprising the steps of treating fibrous ligno-cellulosic material with aqueous nitric acid or nitrate salts having a nitrate ion concentration of about 0.001 to 9.0 wt.% and containing at lea...  
WO/1980/002574
A method of utilizing kraft black liquor by converting the black liquor to "green liquor" and then oxidizing the green liquor with air in the presence of a quinone compound or spent liquor from the kraft process, the soda semi-chemical p...  
WO/1980/000159
The process comprises the attacking of a cellulosic plant material, by separation of binding substances, such as lignin, by using amino organic compounds. In most of the known processes which use aqueous solutions or dispersions of the a...  
WO/1979/000152
Shelf life of silica based defoamer composition is improved by adding oil soluble resins and optionally aliphatic fatty acids to retard separation and to inhibit settling. The composition is useful in preventing foaming or in defoaming a...  
WO/1979/000119
Minced lignocellulose, such as wood, straw, bamboos, bagasse or any other structured vegetal material, is treated in a discontinuous or continuous process. The process consists in boiling this material in an acidified mixture of solvents...  
JP2013227705
To provide a method for producing dissolving pulp from a lignocellulose material in which pulp is adjusted to have a desired viscosity and a desired ash content in a one-stage treatment after a bleaching step at the end.The dissolving pu...  
JP2013213287
To provide a method for manufacturing kraft pulp at a high yield by using wood chips made of a back plate of a Cryptomeria japonica as a raw material.A method for manufacturing kraft pulp by using wood chips made of a back plate of a Cry...  
JP2013213288
To provide a method for manufacturing kraft pulp at a high yield by using wood chips made of a broadleaf tree as a raw material.A method for manufacturing kraft pulp by using wood chips made of a broadleaf tree as a raw material, include...  
JP2013198424
To efficiently obtain plant fibers from a plant-based raw material, that is difficult to delignify, by oxidizing a lignin component contained in the plant-based raw material under mild conditions, the fibers containing cellulose and hemi...  
JP2013181258
To provide a kraft cooking method capable of producing unbleached pulp that contains a small amount of residue and is easily bleached, with a high yield by using hardwood as a raw material.The unbleached pulp that has a Kappa number of 1...  
JP2013067877
To calculate an effect of the addition of an anthraquinone compound in a swift and accurate manner when a lignocellulose material as a raw material is subjected to alkali cooking using the anthraquinone compound.A method for calculating ...  
JP2013019058
To provide a method for enhancing cooking properties and yield of kraft pulp.The method for cooking the kraft pulp comprises using a cooking liquor obtained by mixing a white liquor and a green liquor. In the cooking liquor containing th...  
JP2012219416
To provide dissolving pulp, using a lignocellulose material as a raw material, with no pitch trouble during production of the dissolving pulp by a pre-hydrolysis/Kraft cooking method using a continuous digester, a good digestion efficien...  
JP2012162836
To provide a method for producing non-wood pulp using non-wood vegetable fibers including resin impurities other than lignin, by which the resin impurities are sufficiently removed.Provided is a method for producing non-wood pulp using n...  
JP2012144651
To provide a method for producing microfibrous cellulose capable of easily obtaining the microfibrous cellulose having a fiber width of 1-1,000 nm by mechanically defibrating cellulose fiber.In the method for producing microfibrous cellu...  
JP2012092454
To provide a pulp production device and others enabling pulp production from a raw material within one high concentration pulper, and provide, in particular, a pulp production device and others by which pulp can be produced in the atmosp...  
JP2012052246
To provide a defoaming agent that can avoid a foaming trouble in a kraft pulp production process in which acacia wood is blended, and can restrict an aggregate generation amount of organic materials such as a fatty acid, a resin acid and...  
JP2012046861
To provide lyocell fibers having pebbled surfaces and variations in cross section and diameter along and between the fibers.The lyocell fibers can be produced by centrifugal spinning, meltblowing, or its spunbonding variation. The fibers...  
JP2012036508
To provide a manufacturing method for microfibrous cellulose capable of easily providing microfibrous cellulose with a fiber width of 2-1000 nm by loosening cellulose fiber mechanically.In a manufacturing method for microfibrous cellulos...  
JP2011149129
To provide a method for producing pulp decreased in materials causing slipping trouble of various papers.There is provided a production method for pulp having <0.03 mass% content of ester compounds of sterols, and comprising as a step fo...  
JP2011047057
To promote the action of a chemical for papermaking on a chip by allowing the chemical for the papermaking to penetrate into the inside of the chip.The chemical-containing chip for the papermaking is produced by (A) freezing a chip, (B) ...  
JP2011032628
To provide a technique for improving the causticizing process in pulp production.In the causticizing process of pulp production, improvement of lime sludge dewaterability, decrease of dreg generation and, moreover, high whitening of calc...  
JP2011001677
To provide a pulp production apparatus capable of producing the pulp from a raw material in a high concentration pulper, or the like and to provide the pulp production apparatus capable of producing the pulp using a palmae plant as the r...  
JP2010255171
To provide a lignocellulosic material treating process settling the conventional defects.There is provided a continuous process for producing a chemical grade pulp, which process includes the steps of: (a) steaming lignocellulosic materi...  

Matches 601 - 650 out of 1,000