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JP2000119986A |
To provide a method by which a paperboard having a strength usable as a base paper for corrugated boards, etc., can readily be mass-produced without using a wood pulp by (1) searching for the wood pulp used as a binding pulp when using a...
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JP2000110088A |
To provide the subject system reduced in the number of accessory equipment and/or the dimension of a continuous digester while improving the uniformity of pulp treatment through avoiding 'hang-up' in producing chemical pulp such as kraft...
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JP3029492B2 |
In the continuous kraft pulping of comminuted cellulosic fibrous material (e.g. wood chips) to produce paper pulp, viscosity for a given Kappa Number is significantly increased (e.g. at least about 20%) by adding kraft white liquor to th...
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JP3029453B2 |
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JP3029043B2 |
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JP2000504072A |
The invention relates to a process and apparatus for pretreating pulp raw material, to be subsequently prepared in a chemical pulping process, and for preparing cellulose pulp from a fibrous starting material. According to the process th...
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JP2000501935A |
A purified xylanase produced by Acidothermus cellulolyticus is disclosed having a pH optimum of between about 3.6-4.2 and a molecular weight of between about 50-55 kD as determined by gel filtration. The disclosed xylanase is useful in t...
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JP3004346B2 |
PURPOSE:To obtain defibration composition useful for reclaiming process of waste paper, etc., having low CM-cellulase activity and xylanase activity and a high defibrillating fraction of newspaper by culturing a specific microorganism an...
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JP2000026201A |
To provide a method for making leaves of a plant paper-like, capable of obtaining a paper-like raw material which is useful for a postcard, etc., has characteristics capable of handwriting with a ball-point pen, a fountain pen, a pencil,...
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JP2000500538A |
The proposed invention deals with pulp and paper production, in particular, with the process for preparing pulp cooking liquors to manufacture a fibrous semifabricate. A cooking liquor is proposed to be prepared by saturation of a water ...
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JP2995727B2 |
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JP2989588B1 |
[wrap up] [Task] In the deligninization of lignocellulosic materials, the amount of cyclic keto compound added to the pulped liquor is reduced. A surfactant mixture is added to the pulped liquor. The surfactant mixture added contains at ...
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JPH11514293A |
(57) [Summary] A defoamer / antifoaming composition comprising an ethylene oxide / propylene oxide block copolymer and a diester of a fatty acid containing 2 to 30 carbon atoms. In another embodiment, the composition also comprises a die...
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JPH11335989A |
To efficiently obtain a chemical pulp having a low lignin content by digesting a chemical pulp with a mixed solution of an aqueous cooking solution, an oxyalkylene-modified organic polysiloxane and a specific surfactant. A mixture of woo...
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JP2984798B2 |
Processes for preparing pulp from lignin-containing cellulosic material are disclosed including a prehydrolysis step followed by neutralizing hydrolysate and the prehydrolyzed cellulosic material in the reactor with alkaline neutralizing...
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JP2980926B2 |
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JP2971947B2 |
A single vessel digester system for digesting cellulosic fibrous material comprises a substantially upright vessel (221) having a top (220) and bottom (222) with a slurry of comminuted cellulosic material to be digested introduced adjace...
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JP2971111B2 |
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JPH11286877A |
To obtain a composition useful for treating a plant tissue. A Bacillus subtilis IFO3134 strain is cultured and an arabinase and a protopectinase are isolated from the resultant culture solution. An extract solution is prepared from a soy...
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JPH11286883A |
To provide a method for raising the efficiency in producing a pulp such as an improvement in pulp yield. This method for cooking comprises a previous permeation step for carrying out the permeation of a lignocellulosic substance with an ...
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JP2959181B2 |
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JP2960063B1 |
A method of making kenaf pulp of the present invention is formed of a first process of cutting at least one of core, rind, root and stalk of kenaf into chips with a predetermined length; a second process of crushing the chips of kenaf by...
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JPH11510729A |
PCT No. PCT/EP96/00257 Sec. 371 Date Sep. 2, 1997 Sec. 102(e) Date Sep. 2, 1997 PCT Filed Jan. 23, 1997 PCT Pub. No. WO96/23568 PCT Pub. Date Aug. 8, 1996A method of controlling or preventing foam in an aqueous system is provided, wherei...
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JPH11241285A |
To efficiently purify pulp by applying a preliminarily purifying treatment to a lignocellulose material under an acidic condition before subjecting the lignocellulose material to a lignin-removing treatment with an alkali. In this method...
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JPH11235868A |
To provide transparent pulp paper in which absorptivity of water-soluble color ink is excellent and also precise printing is enabled without causing bleeding of ink and smoothness of the surface is excellent and to provide a method for p...
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JP2940563B2 |
A refining assisting agent comprising sulfonated chitosan has been provided. With the addition of the sulfonated chitosan according to the present invention, power needed in the refining can be remarkably reduced compared with that neede...
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JPH11222786A |
To provide a low-pollution technique for producing a pulp in a closed system aiming at zero waste. This method for producing a long fiber unbleached pulp of a high whiteness degree comprises cooking a nonwoody or a nonwood raw material w...
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JPH11217783A |
To provide a method enabling production of pulp having low resin content by solving hindrance due to a resin contained in a vegetable raw material and hindering digesting and bleaching in production of pulp. This method for producing pul...
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JPH11217785A |
To provide a method and apparatus for improving dispersion of solution in introducing a diluent into the lower part of a cellulose pulp boiler. In a pulp treating tank such as a kraft pulp vertical type continuous boiler, cellulose slurr...
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JPH11197407A |
To avoid deterioration of capacity even in the case of dilution by forming an emulsion in which a secondary silicone prepared by dispersing and reacting particular weight parts of a primary silicone composition A, polydiorganosiloxane B ...
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JP2915576B2 |
An absorbent, chemithermomechanical pulp produced from lignocellulosic material with a wood yield above 88%, a low resin content <0.15%, a long fibre content above 70%, a short fibre content below 10% and a shive content below 3. The met...
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JPH11172588A |
To provide a method for producing Alpinia speciosa pulp, lowering the COD and BOD of a waste liquid, unnecessitating the deordorization of the waste liquid after digestion, not requiring the bleaching of the obtained Alpinia speciosa pul...
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JPH11507416A |
A method and apparatus for producing pulp (95) from fibrous plant materials (10). The method comprises the step of pulping (100) the fibrous material with a cooking solvent of a lower aliphatic alcohol and an additive mixture comprising ...
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JPH11158788A |
To provide a pulp production of good operation efficiency as the running costs are cut down. In the production of pulp in which the pulp is produced via the pulping process 10 including the pulp separation 14 from the raw material and th...
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JP2900091B2 |
Processes for preparing kraft pulp are disclosed. The processes include pretreating cellulosic material or chips with spent cooking liquor at the temperature of about 20 to 100 DEG C, followed by heating the impregnated chips at the temp...
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JP2896982B2 |
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JPH11138981A |
To provide a transparent image recording medium having excellent absorbability of an aqueous soluble color ink and excellent surface smoothness for precisely printing without generating an ink bleeding. The transparent image recording me...
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JP2895240B2 |
In a process for extracting cellulose from fibrous materials such as wood, the fibrous materials are reacted with a chemical disintegration solution in the presence of organosilicic compounds.
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JPH11504394A |
A method for making lignocellulose fibers, which may be optionally coated with a suitable thermoplastic, wherein the starting materials may be chosen from a wide variety of generally non-recyclable contaminated wood, paper, and/or plasti...
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JP2876428B2 |
A method for improving pulp brightness utilizes a combination of a distributed total white liquor charge during the warm fill, hot fill and cooking stages of a batch cooking process and low cooking temperatures during the cooking stage. ...
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JP2846305B2 |
Multi-component systems (S) for modifying, degrading or bleaching lignin or material containing lignin, or similar substances, comprise :(A) optional one or more oxidation catalyst ; (B) at least one suitable oxidising agent ; and (C) at...
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JPH10331084A |
To obtain high-whiteness pulp by treating a phytomaterial with a pulping solution containing both oxalic acid (salt) and hydrogen peroxide. First, a pulping solution is prepared by incorporating an aqueous alkaline solution of at least o...
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JP2829336B2 |
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JP2825346B2 |
(i) Wood chips are chemically digested to provide lignocellulosic pulp followed by e.g. washing and screening (ii) pulp is then O2 delignified and (iii) comminuted and O3 treated for further delignification and bleaching. Pulp prod. obtd...
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JPH10292278A |
To obtain a polysulfide cooking liquor excellent in storage stability and useful for production, etc., of pulp without requiring facility for separating lime mud by oxidizing a sodium sulfide-containing chemical with an oxygen- containin...
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JP2815701B2 |
The invention relates to a process for preparation, under reducing conditions, of cooking liquors having high sulphidity for sulphate pulp cooking, wherein the black liquor obtained in the cooking process is fed, after evaporation, compl...
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JPH10286404A |
To provided an antifoaming agent having an excellent antifoaming and foam inhibiting effect and stable viscosity in addition without increasing the viscosity even in a long term storage. The antifoaming agent is prepared by dispersing a ...
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JPH10280290A |
To provide both a method for treating a smelt, capable of efficiently separating sodium carbonate from a smelt of a black liquor formed in recovery boiler of kraft pulp without supplying energy from the outside and freely changing the co...
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JPH10510721A |
The present invention provides polypeptides with cellulase activity, corresponding DNA sequences, vectors, transformed hosts and a method for the production of these polypeptides, which are obtainable from Aspergillus niger var. niger or...
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JP2793331B2 |
A method and apparatus provide for the continuous digestion of comminuted cellulosic fibrous material (e.g. wood chips) to produce paper pulp, with increased sulfidity. When black liquor is withdrawn from the continuous digester (32), in...
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