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JP2023515047A |
An aqueous acid composition comprising sulfuric acid; a compound comprising an amine moiety and a sulfonic acid moiety; and optionally a peroxide. Use of the composition in biomass processing is also disclosed. [Selection figure] None
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JP2023515044A |
An aqueous composition comprising sulfuric acid, a compound containing an amine moiety, a compound containing a sulfonic acid moiety, and a peroxide. The composition is capable of delignifying biomass. [Selection figure] None
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JP7243009B2 |
The present invention relates to a method of pulping cotton-based raw material for producing dissolving pulp. More specifically, the invention relates to a process for producing dissolving pulp under alkaline conditions in combination wi...
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JP7242483B2 |
A digestion accelerator which is safe and has a high digestion acceleration effect is provided. The digestion accelerator according to the present invention contains tannin or a polyphenol compound that is a hydrolysate of the tannin, a ...
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JP2023503839A |
The present invention relates to a method for controlling emission of nitrogen compounds in the production of cellulose carbamate (CCA). A pulp mill produces dissolving pulp (DP) or kraft pulp and activates the DP or kraft pulp. Activate...
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JP7175801B2 |
To provide a toilet paper that provides an excellent thick feeling, has excellent water-disintegrability, has sufficient softness, provides a security feeling to a human body during use, and is environmentally friendly.The problem is sol...
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JP7165323B2 |
To provide a pulp digestion aid and a method for producing chemical pulp that can improve the yield and can reduce a kappa value.The present invention provides a pulp digestion aid containing a radical scavenger and a solvent. There is a...
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JP7163415B2 |
The invention is directed to compositions and processes concerning efficient downstream processing of products derived from organic acids pretreatment of plant materials.
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JP7149332B2 |
The invention proposes a method of separating hemicellulose through efficient pretreatment of fibrous biomass materials. Fibrous biomass materials are first pretreated by the slurry method: the fibrous biomass materials are milled throug...
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JP7131854B2 |
Described is a method of kraft pulping in which a phenolic compound is added to the cooking step. The phenolic compound is added at a time point between about 5 minutes and about 120 minutes prior to completion of the cooking step. The p...
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JP2022125126A |
To provide efficient methods and compositions for recovery of products from organic acid pretreatment of plant materials.The invention is related to compositions and processes concerning (i) recovery of organic acids from a cellulosic pu...
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JP2022124426A |
To provide a cellulose fiber bundle separation and recovery method without using acid and alkali which can efficiently separate hemicellulose and lignin in the cellulose fiber bundle in short time.A method for separating a cellulose fibe...
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JP2022124425A |
To provide a determination method for continuing and finishing holding of a heating temperature for separating a cellulose fiber bundle which can separate and recover a cellulose fiber bundle by efficiently treating the cellulose fiber b...
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JP2022112363A |
To provide a cooking accelerator further enhancing the efficiency of cooking, and to provide a method for producing pulp using the cooking accelerator.A cooking accelerator contains a quaternary ammonium compound and at least one compoun...
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JP7089959B2 |
To provide a safer cooking accelerator and a method for producing pulp using the cooking accelerator.A method for producing pulp of this invention includes a cooking step and a washing step, wherein the lignocellulosic material is cooked...
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JP7086557B2 |
To provide a digestion accelerator and a method for producing pulp capable of promoting the digestion of wood to produce pulp with high efficiency.A digestion accelerator comprising a compound represented by the following general formula...
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JP2022529140A |
A solution-stable enzyme composition comprising an enzyme component, a stabilizer component, an optional antibacterial preservative component and water, and its use in the production of pulp and paper are disclosed.
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JP2022070920A |
To provide an industrial system for processing various vegetable materials for producing a material having high marketability.A system uses subcritical water extraction technology and includes a pretreatment module and a two-stage extrac...
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JP7060152B1 |
To provide a method for recovering a cationic component of an ionic liquid, which can recover an expensive cationic component of the ionic liquid by a method cheaper and simpler than a conventional method. The first step of mixing an aqu...
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JP7054246B2 |
The present invention relates to a method of preparing grafted copolymers of lignin and/or cellulose, comprising the generation of macroradicals in situ by mechanical impact on the backbone of said lignin and/or cellulose of said lignin ...
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JP7053962B2 |
The purpose of the present invention is to provide a wood chip useful for various applications such as pulp. Specifically, the present invention provides: a wood chip which is derived from a plant of the genus Eucalyptus, has a wood dens...
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JP2022520891A |
The present invention has a method for producing improved cellulose pulp consisting of cellulose fibers of a desired length, such as cellulose fibers having a length-weighted average fiber length Lc (1)> 0.6 mm, and improved properties. ...
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JP7041915B2 |
To provide a method for producing a chemical pulp capable of enhancing a yield, and a cooking method.A method for producing a chemical pulp by subjecting a lignocellulose material to alkali digestion or sulfurous acid digestion, includin...
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JP7013009B2 |
To provide production methods of cellulose-containing materials and production methods of bioethanol with smaller environmental load.Disclosed herein is a method for producing a cellulose-containing material comprising: (A) a step of del...
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JP7010937B2 |
The invention relates to a method for extracting cellulose, hemicellulose and lignin from lignocellulose. Said method can be carried out in an environmentally friendly manner when it comprises the following steps: step a) lignocellulose ...
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JP2022504216A |
The present invention relates to a method of supplying a slurry of chips and a liquid to a prehydrolysis reactor in the production of dissolving pulp. The slurry is pumped into the reactor by using at least one pump and alkali is supplie...
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JPWO2020066537A1 |
Provided is a method for producing a composite material having excellent physical properties. Specifically, a step of subjecting a piece of wood or wood chip to sorbothermal treatment or hydrothermal treatment, a step of crushing sorboth...
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JP2021155661A |
To provide a method of efficiently separating soda lignin from a black liquor discharged from a step of steaming the conifer with soda.A method formed by including: a step a) in which after acid and/or carbon dioxide are added to the bla...
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JP6937792B2 |
The method of the present invention for producing cellulose nanofiber from almond seed coat includes alkali cooking a food manufacturing by-product containing plant fiber with an alkali acceptable for food use, washing the object, bleach...
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JP6889595B2 |
To provide a pulp production method, enabling easy nano-size fining of a pulp by an operable fibrillation using a high pressure water current, while it has been known that in a nano-size fining of a pulp by fibrillation using a high pres...
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JP6866052B1 |
To provide a method for producing a dissolving pulp having an α-fiber content of 95% or more and a degree of polymerization of 500 to 700. The first step of cleaning and removing sand by using bamboo material as chips, the second step o...
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JP6796148B2 |
A cooking method and a digester system wherein partly digested cellulosic fiber source is compressed during cooking to provide high molecular weight lignin and pulp.
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JP2020165061A |
To provide a dissolved pulp-made sheet useful for a raw material for production of viscose rayon and cellulose derivatives, especially, a dissolved pulp-made sheet for producing a viscose solution having excellent filterability.The disso...
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JP2020165060A |
To provide a soluble pulp sheet useful as raw material for the production of viscose rayon and cellulose derivatives, the soluble pulp sheet particularly excellent in filterability of viscose solution.A soluble pulp sheet has an α cellu...
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JP2020165059A |
To provide a soluble pulp sheet useful as raw material for the production of viscose rayon and cellulose derivatives, the soluble pulp sheet particularly excellent in filterability of viscose solution.A soluble pulp sheet contains an ani...
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JP2020523470A |
The present invention is a method for depolymerizing lignin, wherein the method uses at least one catalyst inside a pulp mill to catalyze biomass components and separate them into materials rich in cellulose and lignin. Describe the meth...
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JP2020109224A |
To provide a method for producing a pulp fiber raw material suitable as a cellulose raw material.A method for producing pulp fiber raw material as a cellulose raw material from pulp fiber to be treated includes an ozone treatment step S3...
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JP2020090751A |
To provide a digestion accelerator without using a quinone-hydroquinone-based compound such as anthraquinone and capable of separating lignin components and natural resin components with high efficiency by accelerating digestion of plant...
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JP6702959B2 |
A method for producing a modified cellulosic material is provided including treating a lignocellulosic material with an acid and/or an alkali and then a polyol. Also provided are methods of producing a paper-based product and a cellulose...
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JP2019173241A |
To provide a technology capable of efficiently alkali-digesting lignocellulosic materials.In the method of alkali-digesting lignocellulosic material, the lignocellulosic material is efficiently digested and a pulp can be manufactured by ...
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JP2019173236A |
To provide a method for efficiently producing a lignin decomposition product having a lower molecular weight than that of wood.A step of cooking wood with soda includes adding 1 to 10 mass% of a quinone compound per wood absolute dry wei...
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JP2019173237A |
To provide a simple production method of obtaining an aromatic monomer such as vanillin, a vanillic acid, syringaldehyde, a syringic acid, acetovanillon and acetosyringone, which can be used as raw materials of a perfume, a phenol resin,...
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JP6581137B2 |
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JP6570101B1 |
Producing useful articles using paper containing different types of fibers. In the granulation step, bagasse is crushed to produce granulated Wuji powder (step S11). In the pulping step, pulp is produced from Manila hemp (step S12). In t...
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JP6542966B1 |
To provide a scale inhibitor for efficiently preventing scale formation in a cooking process in pulp production, a method for producing the same, and a method for preventing scale. A scale inhibitor for a cooking step, a method for produ...
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JP6535923B2 |
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JP6522274B2 |
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JP6522885B2 |
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JP6521798B2 |
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JP6518287B2 |
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