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WO/1994/028237A1 |
The removal of inks, particularly hydrophilic flexographic inks, from a pulp fiber slurry is accomplished by use of a combination of (a) a non-ionic surfactant; (b) a fatty acid or salt thereof; and (c) a water-soluble cationic polymer h...
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WO/1994/028235A1 |
The invention concerns a method of processing recycled paper which contains so much wax, hot melts or stickies that they would be expected to cause a stoppage of the paper-manufacturing machine, the paper to be recycled being pulped in a...
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WO/1994/026973A1 |
The invention concerns a method of monitoring the deposition of stickies from paper-pulp suspensions in the manufacture of paper. In this method, the deposition of secondary stickies is monitored by adding to the paper-pulp suspension, i...
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WO/1994/026880A1 |
The present invention discloses the use of combinations of cell wall degrading enzymes in the degradation of cell wall derived substrates. Specifically, the use of combinations of endoglucanases and cellobiohydrolases, comprising xyloglu...
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WO/1994/024364A1 |
The invention discloses various methods for separation of laser and xerographic printed paper waste containing ink having a magnetic component from other paper waste products containing ink which does not contain any magnetic material, b...
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WO/1994/024270A2 |
The stability of the 20,396 dalton Bacillus circulans xylanase was increased by site-directed mutagenesis. Increased stability was conferred by the presence of non-native disulfide bridges, and selected N-terminal mutations. The introduc...
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WO/1994/023118A2 |
A method of bleaching waste paper pulp. The pulp is first treated to a reductive chemical followed by acidification and washing or dewatering. The pulp is then subjected to ozone and then to hydrogen peroxide.
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WO/1994/023052A1 |
A method of hydrolysing cholesterol esters by treating the cholesterol esters with a cholesterol esterase enzyme obtainable from a strain of Pseudomonas fragi, e.g. Ps. fragi 22.39B, FERM BP-1051, or a mutant or a variant thereof, which ...
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WO/1994/023117A2 |
A method of bleaching recycled paper containing pulp wherein said pulp is contacted with ozone in an ozone stage (Z) treatment comprising a brightness stabilizing step during or at the end of said ozone stage (Z), said stabilizing step c...
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WO/1994/021854A1 |
The fungi Schizophyllum commune, Trichaptum biforme and Phanerochaete gigantea are useful in reducing the pitch content of pulps and pulpwoods used in making cellulosic products.
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WO/1994/021785A1 |
An enzyme exhibiting xylanase activity, which enzyme is immunologically reactive with an antibody raised against a purified xylanase derived from Aspergillus aculeatus, CBS 101.43. The enzyme may be used for degrading plant cell wall com...
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WO/1994/020667A1 |
The invention concerns an enzymatic process for pretreatment of wood raw-material which makes it possible to reduce the specific energy consumption of mechanical pulping and to improve the technical properties of the fibres. Cellobiohydr...
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WO/1994/020682A1 |
A composition containing a persulfate and a carbonate, a bicarbonate or sesquicarbonate, which composition is suitable for oxidizing wet strength resin based broke used in wet strength paper. The combination decreases the time required f...
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WO/1994/020669A1 |
The invention concerns a method of digesting recycled paper at a concentration between 8 and 15 % in a closed container, supplying gas or steam at an overpressure between 0.2 and 4 bar and at temperatures between 90 and 150 �C and subs...
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WO/1994/020668A1 |
First and second washing machines (13, 15) are utilized to clean plastic (87) and cellulose (53) from disposed diapers (49) for recycling. The disposed diapers (49) are loaded into the first washing machine (13) and, while being agitated...
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WO/1994/020672A1 |
A method for the bleaching of hardwood and softwood pulp without chlorine or chlorine derivatives that provides a pulp with high brightness, good physical strength, and a low degree of brightness reversion. Hardwood pulp can be bleached ...
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WO/1994/020666A1 |
The invention concerns an enzymatic process for pretreatment of wood raw-material which makes it possible to reduce the specific energy consumption of mechanical pulping and to improve the technical properties of the fibres. Cellobiohydr...
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WO/1994/019532A1 |
A deinking agent containing a compound represented by the general formula (I): R1O-(PO)m-(EO)n-(XO)k-R2 wherein R1 represents C12-C22 alkyl or alkenyl; R2 represents hydrogen or C2-C24 acyl; PO, EO and XO represent, respectively, a propy...
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WO/1994/018388A1 |
The invention concerns dispersion of the cellulose based fibres in straw by the aid of alkali and strong mechanical agitation. This solubilizes the pentosane in the straw, and turns the mixture into a high viscosity paste, so that the fo...
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WO/1994/017237A1 |
This invention provides a method of increasing the degree of delignification of chemical pulp without decreasing the viscosity thereof. In this method, unbleached pulp or pulp which has been subjected to oxygen delignification is subject...
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WO/1994/014965A1 |
Method and expression constructs are provided for the cloning of genes from fungal origin which encode polypeptides having the activity of the Aspergillus tubigensis XYL B enzyme and their overexpression in a selected microbial host cell...
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WO/1994/012619A1 |
This invention relates to activation of enzymes. More specifically, the invention relates to peroxidase enhancing agents. The invention also relates to methods of oxidizing a substrate with a source of hydrogen peroxide in the presence o...
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WO/1994/012718A1 |
Deinking of impact and nonimpact printed is accomplished by repulping (1) the printed paper in an alkali aqueous medium containing a deinking composition comprising one or more nonionic surfactants and/or alkanols. The presence of the de...
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WO/1994/012725A1 |
Pulp is treated with an agent formed when water soluble metal salts are precipitated by adding a source of alkalinity to an acid salt solution to improve distribution of fines, whiteness of the pulp and/or binding of the fines to fiber f...
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WO/1994/012621A1 |
This invention relates to activation of enzymes. More specifically, the invention relates to agents capable of enhancing the activity of peroxidases or peroxidase acting compounds. The invention also relates to methods of oxidizing a sub...
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WO/1994/004745A1 |
This invention pertains to algal pulps and pre-pulps generated from members of the order Cladophorales, for use in making papers and paper products and to the paper and paper products made from these pulps. The invention also pertains to...
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WO/1994/004664A1 |
The present invention relates to novel xylanolytic enzymes obtainable from strains of alkalophilic Bacillus sp. Moreover, the invention relates to a method for producing the enzymes and the use of the enzymes in the pulp and paper industry.
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WO/1994/001532A1 |
The present invention relates to novel microorganisms, novel enzymes obtainable herefrom, and to a method of producing the novel enzymes. More specifically, the invention relates to novel enzymes obtainable from strains of the novel alka...
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WO/1994/001538A1 |
Enzyme exhibiting cellobiose oxidase activity, which enzyme has a relative activity of at least 70 % at a pH of about 9 and a temperature of about 50 �C. An enzymatic agent comprising cellobiose oxidase and an endoglycanase and/or oxid...
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WO/1994/001614A2 |
A process for the preparation and use of a cleaning solution with both foaming and non foaming properties which can be used to de-ink paper or clean surfaces which have been soiled either by the pulping of virgin or secondary recycled fi...
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WO/1994/000633A1 |
Disclosed is a method of deinking cellulosic materials comprising shredding or chopping the cellulosic materials to create uniform paper shreds, immersing the paper shreds into a nonaqueous organic solvent while agitating the paper shred...
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WO/1993/024621A1 |
The structure of the T. reesei xln1 and xln2 genes and the primary structure of proteins are described. Enzyme preparations enriched in hemicellulase enzymes are described. Such enzyme preparations may also be partially or completely def...
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WO/1993/024622A1 |
The present invention relates to a DNA sequence, which codes for endomannanase produced by fungi of the genus $i(Trichoderma) and transferred into a yeast or fungus strain induces that strain to produce endomannanase, as well as to a met...
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WO/1993/024619A1 |
The present invention relates to novel microorganisms and to novel enzymes obtainable therefrom. More specifically, the invention relates to a new species of the genus Hyphozyma, and to novel lipases obtainable therefrom. The invention a...
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WO/1993/024702A1 |
A waste paper treatment process for the recycle and re-use of waste paper, which process comprises treating the waste paper , in a repulper, with a surfactant, preferably in the absence of traditional repulper chemicals such as silicate,...
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WO/1993/023606A1 |
A process for producing paper or paperboard from mechanical pulp, wherein the pulp is treated with a phenol-oxidizing enzyme system after the grinding and/or refining of logs or wood chips has been completed.
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WO/1993/022491A1 |
Wastepaper containing printing ink is refined in the presence of the reaction products of epoxidized derivatives of C10-C22 carboxylic acids with alkoxylated polyhydroxy alcohols and the detached printing ink particles are subsequently r...
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WO/1993/022499A1 |
A wood-free white paper product has a pulp component which comprises 10 to 100 %, by weight, of bleached cellulosic fibers consisting essentially of recycled fibers of old corrugated containers; typically the bleached fibers have a visco...
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WO/1993/020917A1 |
The present invention relates to a procedure and a means for processing liquids, such as for oxidizing, flotating or treating in other desired ways. In the method a liquid to be processed is conducted as an in-flow (A) into a first volum...
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WO/1993/021376A1 |
A process of de-inking waste paper can be operated under conditions using a simple combination of chemicals to result in a waste liquor that is substantially environmentally friendly. The process comprises forming a pulp from the waste p...
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WO/1993/020192A1 |
A preparation exhibiting enzymatic activity comprising a substantial portion of alpha-L-arabinofuranosidase activity having the capability of delignifying wood pulp at a pH of 8 - 9 and a temperature of 65 °C, is disclosed. Said prepara...
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WO/1993/019171A1 |
This invention relates to novel enzymes. More specifically, the invention provides novel xylanases obtainable from microorganisms of the genus Thermotoga. The invention also relates to a process for the preparation of these xylanases, an...
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WO/1993/017177A1 |
The invention relates to a process for the deinking of wastepaper stocks comprising converting the wastepaper to a pulp and contacting said pulp with an aqueous medium containing a surface active deinking agent, and thereafter subjecting...
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WO/1993/016226A1 |
Waste cellulosic paper products, for example, old corrugated containers are recycled employing oxygen delignification in the presence of an alkaline material to produce a recycled pulp of lower kappa number, while maintaining adequate st...
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WO/1993/015260A1 |
The invention concerns a method of removing the ink from recycled printed paper in the presence of a de-inking chemical, the recycled paper being reduced to a paper-pulp suspension and the printing-ink particles thus detached from the pa...
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WO/1993/011296A1 |
The present invention concerns a method for enzymatic treatment of lignocellulosic materials, in particular cellulose pulps. According to a method of the present kind, the material is contacted with an enzyme preparation having an essent...
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WO/1993/010224A1 |
The present invention relates to novel cholesterol esterases. More specifically, the invention relates to novel cholesterol esterases derived from strains of Pseudomonas cepacia. In a more specific embodiment, the invention relates to a ...
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WO/1993/010158A1 |
A method of producing a gel material and which comprises firstly providing an aqueous soluble hemicellulosic starting medium which is free of glucans and obtainable from testaceous plant material. The starting medium is then extracted wi...
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WO/1993/010157A1 |
Two cereal extracts are produced by means of a process comprising the steps of milling cereal material, suspending the milled material in an aqueous liquid, treating the suspension with an alkali, acidifying and separating the solid and ...
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WO/1993/008275A1 |
This invention relates to novel enzymes. More specifically, the invention provides novel xylanases obtainable from strains belonging to the genus Rhodothermus. The invention also relates to the use of the xylanases in the treatment of li...
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