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Matches 551 - 600 out of 2,775

Document Document Title
WO/2000/068494A1
The invention concerns a method for producing paper pulp from a lignocellulosic vegetable raw material. Said method consists in contacting said raw material with a mixture of formic acid and acetic acid (in an amount more than 5 wt. % of...  
WO/2000/056867A1
Tolymethylgalacturonases belonging to family 28 of polysaccharide lyases and comprising the amino acid sequence of SEQ ID NO:1 or an amino acid sequence having at least 70% sequence identity with SEQ ID NO:1 show good performance in indu...  
WO2000035588B1
A method for arranging the raw material, energy and waste management of a production plant manufacturing pulp and/or paper and/or board from recycled fibres, as well as a production plant applying the method, which plant is advantageousl...  
WO/2000/053843A1
The present invention concerns a process and an enzyme preparation for enzymatic control of extractives during paper manufacture. According to the invention pulp suspensions and/or process waters from pulping, bleaching and/or paper manu...  
WO/2000/052257A1
The invention relates to a multi-component system for carrying out mediator-dependent enzymatic oxidation, comprising an oxidation catalyst, an oxidant and a mediator and characterised in that a) the oxidation catalyst is chosen from the...  
WO2000014326B1
A method for obtaining sclerenchyme fibres that are suitable for the production of textile products for fibre-reinforced materials, paper, cardboard and non-wovens. The fibres are liberated from accompanying substances such as pectin by ...  
WO/2000/032867A1
The invention relates to a method for de-inking waste paper by floating aqueous slurries of printed paper in the presence of enzymes. Mixtures are used as collecting agents which contain (a) 1 to 10 % acidic cellulases, (b) 10 to 40 % fa...  
WO/2000/025600A1
A method for processing straw pulp that includes caustic treatment is provided. The caustic treated straw pulp can be incorporated into a papermaking furnish to provide a paper product. The caustic treated pulp imparts strength to papers...  
WO/2000/026468A1
The invention relates to modified cationic polymers which can be obtained by reacting (a) water-soluble, polymeric compounds containing NH groups with (b) compounds which are at least bifunctional with regard to NH groups, which contain ...  
WO/2000/024962A1
The invention concerns a method for repulping paper by contacting an aqueous paper suspension with at least a paracid for a time interval of less than 15 minutes to obtain raw pulp followed by a subsequent treatment to obtain a defibrate...  
WO/2000/020677A1
The present invention is a soybean hull fiber from which polyphenolics or lignin has been removed, having cellulose and hemicellulose, wherein the improvement is that the cellulose and hemicellulose are dissociated as a delignified soybe...  
WO/2000/019005A1
A method of making sanitary paper products from coarse fibers. The method includes the steps of: (a) pulping coarse fibers in water with agitation to produce a pulp slurry, the pulp from the coarse fibers having an average fines content ...  
WO/2000/015899A1
The present invention relates to methods for deinking and decolorizing a printed paper, comprising: (a) pulping the printed paper to obtain a pulp slurry; (b) dislodging an ink from the pulp slurry with one or more enzymes; (c) decoloriz...  
WO/2000/012810A1
A method for preparation of a fibrous stock suitable for manufacture of paper out of herb-stemmed plants, such as, for example, straw or flax. The method comprises steps in which the fibrous raw-material is cut into chips, cooked, and bl...  
WO/2000/009707A1
A novel composition is provided which is predicable by an $i(Actinomycete). The cellulase has an approximate calculated molecular weight of 36 kD and has a pH optimum at 40 °C of 8 and 60 °C of 7. Also provided is a DNA encoding said c...  
WO/2000/005310A1
A process and materials are described in which highly refined cellulose fibers are broken down into microfibers and further processed into compositions, films, coatings and solid materials which are biodegradable and even edible. The pro...  
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 ...  
WO1999047743A9
Deinking a sheet of paper by removing toner thereon including wetting the sheet of paper with a non-toxic, water soluble deinking solution which comprises water, for wetting the sheet of paper to swell the fibers of the sheet, a water so...  
WO/1999/057353A1
There is described a new method for making a fibre mat under the use of plant fibres, preferably from flax and hemp. The fibres are pre-treated and shortened, whereafter they are separated for establishing a fibre mass comprising single ...  
WO1999039044B1
The present invention relates to a device and method for measuring the bleach requirement and bleachability of pulp in a pulp mill. The invention enables pulp mill operators to better control bleach plants. In one aspect, the invention c...  
WO/1999/055786A1
The invention concerns a liquid de-inking composition comprising at least a surfactant of polyalkoxylated terpenic origin of formula: Z-X-W-[CH(R?5¿)-CH(R?6¿)-O]¿q?-A wherein: Z is a bicycloheptenyl or bicycloheptyl radical, preferabl...  
WO/1999/054545A1
This invention describes a novel method for selectively delignifying lignocellulosic materials and bleaching of pulp and dyes using a combination of an oxidative enzyme and a metal complex. More specifically, the process involves the oxi...  
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...  
WO/1999/049127A1
The invention relates to a process for removing contaminants from waste paper comprising a) leading an inert gas through an aqueous pulp, which pulp comprises waste paper fibers and contaminants, to produce a foam comprising at least par...  
WO/1999/049128A1
Ethyleneamine compound(s), or mixtures thereof, are used in effective amounts to reduce or inhibit the deposition of white pitch on the paper making equipment during the processing to recycle coated paper.  
WO/1999/047248A1
Methods for controlling wax and other contaminants by improving the dispersion of these materials through the addition of contaminant dispersants to the process of recycling paper and paperboard are disclosed. A preferred contaminant dis...  
WO/1999/046443A1
A method of papermaking having zero liquid discharge. A pulp slurry (1) is produced from recycled cellulosic material and the slurry contains suspended cellulosic fiber material, solid contaminants and dissolved water soluble solids. The...  
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...  
WO/1999/046442A1
The present invention relates to a method of reducing the loss of mineral fractions in the treatment of broke in paper production. The invention relates in particular to the treatment of the so-called broke from a paper machine, which is...  
WO/1999/045204A1
A soft, bright and strong tissue paper product and a process for preparing such a tissue paper product is provided. The tissue paper product is prepared from raw cotton linter fibers and demonstrates unexpected medical benefits or advant...  
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...  
WO/1999/042651A1
A method for removing wax from a pulp furnish is disclosed. The method is effective for removing wax from a pulp furnish containing waxed old corrugated containers (OCC). In the method, the pulp furnish containing waxed OCC is treated wi...  
WO/1999/042657A1
The invention concerns a method for obtaining fibres integral with calcium carbonate particles which consists in contacting the fibres to be treated with carbon dioxide generators and with at least a composition containing Ca?++¿ ions c...  
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 ...  
WO/1999/039043A1
A method and an apparatus for wetting fibrous material, such as coarsely shredded waste paper. Fibrous material and wetting fluid is introduced into a wetting enclosure. Pressure is decreased within the wetting enclosure for a short peri...  
WO/1999/037834A1
A process for the production of elementary vegetable bast fibres is provided, which process comprises the steps of a) cutting raw vegetable bast fibres to a fibre length of 1 to 400 mm, b) chemically treating the cut fibres to remove lig...  
WO/1999/036199A1
A method for separating wax from wax containing paper. The method involves immersing the wax containing paper in a heated alkane solvent, preferably n-hexane, to dissolve the wax contained in the paper into the solvent. The dissolved wax...  
WO/1999/035491A2
A method of detecting environmental stress in plants, particular water stress in cotton plants is based on a hot dilute acid extraction of plant tissues such as cotton fibers. The extracts are analyzed by high pH anion exchange chromatog...  
WO/1999/035482A1
The invention relates to a method and a device for measuring the amount/activity of the enzyme catalase before or in connection with bleaching of cellulose fibres preferably in a pulp suspension for the purpose of providing a better and ...  
WO/1999/033900A1
Process for repulping paper comprising providing paper comprising thermosetting resin which is the reaction product of epihalohydrin and polyamide made from polyalkylene polyamine, succinic acid and optionally another dicarboxylic acid a...  
WO/1999/032719A1
An ionic thermosettable resin useful for imparting wet and dry strength to paper is made by: (a) providing a copolymer comprising monomer units derived by copolymerization of acrylamide or alkyl-substituted acrylamide and diallylamine or...  
WO/1999/029821A1
A method of optimizing the use of cellulase is provided wherein the ionic strength of the aqueous solution in which the cellulase is used is adjusted to greater than 20 mM. The pratice of the invention results in improved performance of ...  
WO/1999/027177A1
Hydrophobic contaminants are removed from repulped waste paper by preserving the hydrophobicity employing a minimum of reagent chemicals if any and a minimum of residence time of repulped waste paper in water. Dry repulping is used and o...  
WO/1999/025847A2
A novel cellulase composition is provided which is producible by $i(Actinomycete). The cellulase has an approximate calculated molecular weight of 35 kD and has a pH optimum at 40 °C of 6 and at 60 °C of 6 or less. Also provided is a D...  
WO/1999/025846A2
A novel cellulase composition is provided which is producible by an $i(Actinomycete). The cellulase has an approximate calculated molecular weight of 36 kD and has a pH optimum at 40 °C of 8 and at 60 °C of 7. Also provided is a DNA en...  
WO/1999/023117A1
A method for preparing oxidized cellulose, which comprises bringing a cellulose-containing material into contact with a reactant, such as 2,2,6,6-tetramethylpiperidine-1-oxyl, producing an oxoammonium ion in the presence of an oxidizing ...  
WO/1999/019559A1
An improved method for inhibiting the deposition of adhesive contaminants, hot melts and/or pressure sensitive adhesive materials onto the surfaces of secondary paper products and repulping equipment during the manufacture of same from w...  
WO/1999/018285A1
The present invention provides a method for pre-processing and processing straw pulp and forming a byproduct suitable for animal consumption. The present invention also provides a paper product comprising straw pulp. According to the pre...  
WO/1999/016959A1
Processes for treating waste paper without biocides and chlorine compounds and practically no hydrogen peroxide and/or peracetic acid, with a total germ number of less than 1000 KBE/g and a surface germ number of less than 20 KBE/dm?2¿,...  
WO/1999/016960A1
The invention is a process for preparing a chemical pulp useful for preparation of cellulose derivatives and cellulose fibers. It involves first treating a conventional kraft pulp with an aqueous alkali to swell the fibers. The swollen f...  

Matches 551 - 600 out of 2,775