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WO/2005/024125A1 |
A process for removing silica from nonwood plant materials involving both chemical and mechanical action is described. The silica-rich epidermal cells are liberated mechanically by a pre-pulping and low-consistency refining step and subs...
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WO/2005/018435A2 |
A thermally modified microbial-derived cellulose material is described for use as an implantable material in general surgery, plastic surgery and neurosurgery.
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WO/2005/004812A2 |
A starch composition is made by combining starch with a species which induces gelation, and cooking the starch before or after the combination, to produce a gel. The species which induces gelation is selected from the group consisting of...
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WO/2005/001195A1 |
A new method for making pulp out of agricultural residue includes harvesting certain portion of plant stalk. The harvested plant stalk is bailed, transported and stored. At the mill, the plant stalk is chopped and goes through pulping pr...
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WO/2004/106624A1 |
The invention provides for methods for producing pulp (comprising cellulose) and lignin from lignocellulosic material, such as wood chips. The methods involve acid catalyzed hydrolysis. Lignocellulosic material having a relatively high m...
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WO/2004/094624A1 |
The invention relates to methods for the isolation and development of fungi useful in the enhancement of wood or wood products quality and/or wood or wood products processing, and the decay fungi so developed. Compositions comprising or ...
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WO/2004/092477A1 |
The invention concerns a method for the pretreatment of chips that are fed to a sulphate cooking process. Through the addition of an acidic fluid to the steam treatment step, a very high ionic concentration of hydrogen ions is achieved. ...
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WO/2004/092478A1 |
The invention concerns a method for the pretreatment of chips that are fed to a sulphate cooking process. Through acidification of the chips in an acidic treatment fluid with a subsequent draining of free treatment fluid before subsequen...
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WO/2004/050985A1 |
The present invention concerns a method for decreasing the amount of wood extractives in wood chips. According to the method, nitrogen is added to the wood chips in a form suitable for the micro-organisms occuring naturally in the wood c...
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WO/2004/050983A1 |
The present invention provides, according to a first aspect, a method for treatment of wood chips from soft or hard wood or a mixture thereof for the reduction of non-process elements and/or organic process disturbing substances in a mec...
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WO/2004/022838A1 |
A method of the electric pulse treatment of fibrous materials includes preparing a suspension of a selected fibrous material in a liquid medium of suitable chemical composition, treating the suspension with at least one electric pulsed d...
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WO/2004/022842A1 |
A method of producing mechanical pulp, comprising impregn ation of fiber material with an enzyme-containing aqueous liquid prior to defibration and refining of the fiber material to produce a mechanical pulp. According to the invention, ...
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WO/2004/015195A1 |
This invention is a method of reducing the resin content of chemical pulps comprising heating wood chips in an aqueous alkaline medium in the presence of an effective deresinating amount of an alkyl alcohol alkoxylate of formula RO[(CH2C...
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WO/2004/013408A1 |
The invention relates to a method for producing fibrous materials for the manufacture of paper, cardboard and cardboard packaging from waste wood chips. To achieve this, the wood chips are impregnated with an alkaline peroxide solution, ...
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WO2003013810A9 |
The invention relates to a method for the vacuum impregnation of small-particle material in an impregnating device (16, 16') comprising a dischargeable impregnating chamber (54, 84), an inlet (64, 64') for introducing the material into t...
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WO/2003/106765A1 |
The invention concerns a method and an arrangement for improved impregnation of chips in association with the manufacture of chemical cellulose pulp. Unsteamed chips are fed into an impregnation vessel (30) in which a fluid level (LIQ&lo...
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WO/2003/080922A1 |
The invention relates to a method for adjusting the fibrous properties of chemical pulp, mechanical pulp or chemi-mechanical pulp, for adjusting the smoothness of the properties and for decreasing any variation in quality. According to t...
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WO/2003/080924A1 |
The invention concerns a method for the modification of cellulose fibres with the aim of increasing the strength properties of the pulp. Cellulose derivative, preferably in the form of CMC, is added in associated with alkali cooking and/...
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WO2002014599A9 |
The invention relates to a method of steaming lignocellulosic material to be pulped. The material is treated in a superheated steam atmosphere. The treatment can be used for loosening up the structure of fibre for mechanical pulping and/...
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WO/2003/057979A1 |
The invention concerns a method for the manufacture of cooked cellulose pulp in which the starting material, preferably chips, undergoes a successive increase in temperature towards cooking temperature while the chips are first treated i...
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WO/2003/046276A1 |
In a process of treating wood chips for reduction of the concentration of undesirable inorganic elements prior to cooking in a production line for chemical pulp, the wood chips, having entrapped air, are treated with an aqueous leaching ...
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WO/2003/040462A1 |
A method of producing pulp for use in making paper products using microwave radiation to pretreat the source of pulp prior to further processing. Practising the method of the invention results in substantial energy savings while decreasi...
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WO/2002/099183A1 |
In a new process for preparing pulped wood chips for paper making, chips from a hardwood such as eucalyptus are inoculated with aliving culture of one or more white rot fungi. The fungi propagate throughout th ebody of the wood chip, sel...
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WO/2002/090648A1 |
The invention relates to a feed arrangement for feeding chips to chip bins (1) in the production of cellulose pulp in continuous digesters (16), in which the chip bin is constituted by a greatment vessel having a top and a bottom, in whi...
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WO/2002/081816A1 |
The invention discloses a method of extracting extractives from wood chips. The method includes sterilization of wood chips under pressure and heat to obtain sterilized wood chips. The sterilized wood chips may be inoculated with selecte...
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WO/2002/075043A1 |
The present invention is a method for producing pulp from fibrous lignocellulose material using a treatment step which exposes the material to oxalic acid, or oxalic acid and sodium bisulfite, prior to pulping. The pulping of the resulti...
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WO/2002/065117A1 |
A method of selecting bulk wood units for mechanical pulping, which consists of establishing a reference scale by selecting a test sample, measuring the acoustic velocity through each sample unit, selecting acoustic velocity bands from t...
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WO/2002/042550A1 |
A continuous, alkaline process for the production of pulp from wood chips, wherein the preheated chips are subjected to an extended impregnation step for at least 60 min, preferably longer, at a temperature not exceeding the impregnation...
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WO/2002/042551A1 |
An alkaline batch process for the production of pulp from wood chips, wherein the preheated chips are subjected to an extended impregnation step outside the digester for at least 60 min, preferably longer, at a temperature not ex-ceeding...
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WO/2002/014598A1 |
A multi-function process for the separation of cellulose fibers (9) from the other constituents of lignocellulosic biomass such as found in grasses, agricultural waste, and waste paper with application in the preparation of feedstocks (1...
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WO/2002/002866A2 |
Disclosed is a substantially closed fungal incubation containment system for use in biopulping lignocellulosic material, the system being equipped with a means for controlling air flow to or from the materials. Also disclosed are methods...
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WO/2001/059203A2 |
The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a high-yield pulping process with a delignifying gas compris...
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WO/2001/059202A2 |
The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a chemical pulping process with a delignifying gas, wherein ...
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WO/2001/032715A1 |
Disclosed are processes and systems for the production of useful organic products from diverse lignocellulose-containing biomass having increased yield and efficiency over existing processes. In particular, the present invention integrat...
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WO/2001/025531A1 |
In a batch process for kraft pulp production, fouling of heat transfer surfaces is reduced. The first impregnation liquor withdrawn from the digester is rich in dissolved calcium-containing material. This material, when heated, releases ...
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WO/2001/014631A1 |
The invention relates to a compositions for increasing the mass absorption of polar systems in hydrophobic-hydrophilic hybrid materials containing (A) polar solvents and (B) surface-active organosilicon compounds selected from the group ...
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WO/2000/061858A1 |
The invention relates to a method for separating lignocellulose-containing biomass, especially wood, into the essential components in the form of lignin, hemicellulose and cellulose, with the following steps: a) pre-hydrolyzing the ligno...
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WO/2000/056973A1 |
A method and apparatus for subjecting a material in a liquid to explosive forces is provided. The method and apparatus involve a vessel (5) having a length greater than its width. The vessel (5) has a top (10) which is quickly and easily...
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WO/2000/052256A1 |
The main aspect of the present invention is based on introducing process fluid into a compressive pretreatment stage, in an environment of elevated temperature and pressure, thereby initiating lignin dissolution in the chips at a point f...
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WO/2000/047812A1 |
The process of the present invention relates to a substantially sulfur free process for the manufacturing of a chemical pulp with an integrated recovery system for recovery of pulping chemicals. The subject process is carried out in seve...
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WO/2000/039390A1 |
Disclosed is a method for producing kraft wood fiber having an alpha-cellulose content greater than 97 % and a viscosity greater than 40 centipoise. The method involves prehydrolyzing hardwood chips with water, kraft cooking, bleaching a...
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WO/2000/034568A1 |
The invention relates to a method of obtaining alpha dissolving pulp from wood chips by steam pressure treatment and subsequent removal of the hemicelluloses and the lignin. The inventive method is characterized in that the chips are imp...
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WO/2000/028133A1 |
A process for the production of pulp using alkaline delignification is disclosed, wherein cellulosic material is initially treated with steam, and a chelating agent is added in connection with the steam treatment. The end pH of the steam...
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WO/1999/066119A1 |
Composite panels and pulp, and paper products of the pulp, are produced from Arundo donax. In the fabrication of the composite panels, Arundo donax is comminuted (20) to a suitable size, combined with a binder (40, 50), and consolidated ...
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WO/1999/063149A1 |
Disclosed is a method for delignifying lignocellulosic materials by first treating the material with an alkaline solution in the presence or absence of anthraquinone, and then exposing the material to a polyoxometalate. Inclusion of the ...
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WO1999045191A9 |
Chemical cellulose pulp (e.g. kraft pulp) is produced with enhanced strength and/or yield using a strength or yield enhancing additive such as polysulfide or anthraquinone or its equivalents or derivatives, and in a manner that allows ef...
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WO/1999/054544A1 |
High-yield chemimechanical lignocellulosic pulp is produced from non-woody species by cutting and screening the non-woody species, soaking them in an acidic aqueous solution preferably containing a chelating agent, treating the washed no...
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WO/1999/046444A1 |
In a new process for preparing pulped wood chips for paper making, chips from a hardwood such as eucalyptus are inoculated with a living culture of one or more white rot fungi. The fungi propagate throughout the body of the wood chip, se...
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WO/1999/042652A1 |
The specification discloses a process for production of chemical fibrous pulp for making paper, paperboard and other fibrous products from herbaceous plants, such as kenaf. Pulp from the herbaceous plant is made by a process which involv...
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WO/1999/041448A1 |
A process for producing a pulp suitable for papermaking from a nonwood fiber source material is described. Exemplary nonwood fiber source materials include kenaf and industrial hemp. The process includes the steps of washing the nonwood ...
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