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WO/2022/179086A1 |
Disclosed is a preparation process for eyesight protection paper, which uses a mixture of waste paper and straw as a raw material and comprises the following specific steps: a, cutting the straw into sheets, removing impurities, and dehy...
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WO/2022/178619A1 |
An aqueous composition comprising: sulfuric acid; a heterocyclic amine compound (e.g. imidazole and 1- methylimidazole); an alkane sulfonic acid (e.g. methanesulfonic acid); and a peroxide (e.g. hydrogen peroxide). Said composition being...
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WO/2022/178618A1 |
An aqueous composition comprising: sulfuric acid; a modifying agent comprising an arylsulfonic acid; and a peroxide. Said composition being capable of delignifying biomass under milder conditions than conditions under which krafit pulpin...
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WO/2022/178614A1 |
An aqueous composition comprising: sulfuric acid; a heterocyclic compound; and a peroxide. Said composition being capable of delignifying biomass under milder conditions than conditions under which kraft pulping takes place.
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WO/2022/178617A1 |
An aqueous composition comprising: sulfuric acid; a substituted aromatic compound; and a peroxide. Said composition being capable of delignifying biomass under milder conditions than conditions under which kraft pulping takes place.
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WO/2022/178615A1 |
An aqueous composition comprising: sulfuric acid; a modifying agent comprising an amine group; and a peroxide. Said composition being capable of delignifying biomass under milder conditions than conditions under which kraft pulping takes...
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WO/2022/178391A1 |
A feedstock includes feedstock paper and non-paper material. The feedstock paper includes lignin and cellulose. A method includes cooking the feedstock in cooking liquor to dissolve at least a portion of the lignin from the feedstock pap...
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WO/2022/170373A1 |
The invention relates to a method for the chemically assisted mechanical pulping of wood chips, said method comprising: a) producing a feedstock from wood chips; b) bringing the feedstock into contact with steam at a pressure of between ...
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WO/2022/144176A1 |
The invention relates to a method for producing products based on wood as a raw material, characterised in that wood in the form of wood particles is subjected to an extraction treatment using an extractant comprising one or more organic...
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WO/2022/144377A1 |
The invention relates to a method for producing products based on wood as a raw material, characterised in that wood, in the form of wood particles, is subjected to extraction treatment using an extracting agent which comprises one or mo...
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WO/2022/144379A1 |
The invention relates to a method for producing products based on non-woody biomass as raw material, characterised in that non-woody biomass which contains cellulose, hemicelluloses and lignin and is in the form of particles is subjected...
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WO/2022/126229A1 |
A process to separate lignin from a lignocellulosic feedstock, said process comprising the steps of: - providing said lignocellulosic feedstock; - providing a composition comprising; - an acid; - a modifying agent selected from the group...
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WO/2022/129653A1 |
The present invention is a method for obtaining a reinforced packaging paper, comprising the application of a residual fluid from the pre-treatment of lignocellulose waste with a water-alcohol mix to the packaging paper and the subsequen...
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WO/2022/126228A1 |
Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a modifying agent sel...
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WO/2022/120459A1 |
Method for controlled delignification of lignocellulosic feedstock, said method comprising the steps of: providing a reactive phase of pH less than 1, said reactive phase comprising: o water; o sulfuric acid; o a source of peroxide; o a ...
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WO/2022/120458A1 |
Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: an acid; a modifiying agent se...
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WO/2022/120460A1 |
Method of delignification of plant material, said method comprising providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising an acid; a modifiying agent sele...
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WO/2022/117809A1 |
The present invention relates to a paper pulp comprising: - a mineral material content of at least 30% by weight; - a non-cellulosic polysaccharide content of at least 10% by weight; and - a cellulosic polysaccharide content of at least ...
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WO/2022/109709A1 |
Method of delignification of plant material, said method comprising: providing said plant material comprising cellulose fibres and lignin; exposing said plant material requiring to a composition comprising: - an acid; - a capping agent; ...
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WO/2022/106982A1 |
Process for the treatment of lignocellulosic biomass with a process solvent selected from a eutectic solvent, an ionic liquid and/or a mixture of said eutectic solvent and said ionic liquid, comprising the following steps or stages: A. M...
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WO/2022/098963A1 |
Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a brightness of about 80% or greater. The relatively high degree of brightness is achieved without a loss of fiber length or pulp yield. The high degree of...
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WO/2022/098962A1 |
Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a brightness of about 80% or greater. The relatively high degree of brightness is achieved without a loss fiber length or pulp yield. The high degree of br...
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WO/2022/098958A1 |
Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a Very Long Fiber (VLF) content of about 0.50% or less. The fibers are readily dispersible in water and useful in the formation of fibrous sheets, particul...
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WO/2022/098956A1 |
Disclosed are non-wood pulps having a fiber length greater than about 1.70 mm and a porosity of about 100 cfm or greater. The relatively high degree of porosity is achieved without a loss in tensile strengths. The high degree of porosity...
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WO/2022/093607A1 |
A foam control agent and method of controlling foam for paper or pulp production by use of a foam control agent, wherein the agent comprises at least a branched alcohol.
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WO/2022/061487A1 |
A fiber pulp feeding device (100), comprising a pulping container (10), a feeding container (20) and a material supplementing container (30). The pulping container (10) is used for mixing fiber material and water and beating same into fi...
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WO/2022/061483A1 |
A method for feeding a fiber pulp, the method comprising the following steps: mixing a fiber material with water at a preset ratio; soaking the fiber material in the water for a period of time; breaking the fiber material in the water to...
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WO/2022/055960A1 |
A pulping method includes chemical cooking of softwood chips to retain a high lignin content of about 18% to about 28% by weight and fiberization of the cooked softwood chips to a low residual wood shive content of at most 15% by weight.
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WO/2022/016159A9 |
Processing systems and methods are described for pre-processing processing of biomass. The systems include an extruder characterized by one or more ports though which acids and/or bases may be introduced to the biomass during extrusion. ...
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WO/2022/034404A1 |
Cellulosic material for the production of regenerated cellulosic fiber is disclosed. The cellulosic material comprises reclaimed cellulosic material, wherein the reclaimed cellulosic material is obtained from cellulosic material waste an...
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WO/2022/028500A1 |
The present invention relates to the technical field of papermaking, and relates to a sulfate wood pulp short-procedure ECF bleaching process X/Z/D-EOP-D or X/D/Z-EOP-D, comprising the following steps: (1) sequential bleaching (X/Z/D or ...
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WO/2022/027080A1 |
The invention relates to a method for producing cellulose-fiber-based packaging products and to a cellulose-fiber-based packaging product. The method comprises producing at least one first material comprising cellulose fibers, producing ...
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WO/2022/029621A1 |
The invention relates to a method for obtaining a hybrid wood-inorganic material precursor, a method for obtaining a hybrid wood-inorganic material, a product obtained by this method and uses thereof.
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WO/2022/018193A1 |
The present invention relates to an activated carrot fiber and to a method for the production thereof. The invention also relates to the use of the activated carrot fiber as a thickening or structuring agent in various industrial product...
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WO/2022/018188A1 |
The present invention relates to an activated dyed carrot fibre and to a method for the production thereof. The invention also relates to the use of the activated dyed carrot fibre as a thickening or structuring agent in various industri...
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WO/2022/008791A1 |
The present invention discloses a cooking method and a digester system whereinpartly digested cellulosic fiber source is compressed during cooking to provide highmolecular weight xylan, high molecular weight lignin and pulp.
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WO/2022/006644A1 |
The present application provides cationic nanofibrillated cellulose (cNFC), which can be used as stabilizer for emulsions, and provides processes to obtain those cNFCs and emulsions. Those emulsions can be used in many applications, e.g....
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WO/2022/008790A1 |
The present invention discloses a cooking method wherein partly digested wood based cellulosic raw materal is compressed during cooking to provide high molecular weightxylan, lignin and pulp.
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WO/2022/003237A1 |
The present disclosure provides a method of purifying raw methanol obtained in chemical pulping, wherein heavy oil is admixed with the raw methanol to prevent precipitation, and the methanol mixture is distilled or evaporated to recover ...
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WO/2021/256911A1 |
The invention relates to the field of pulp and paper production and can be used in the production of pulp from agricultural waste resulting from the processing of cereal crops, in particular rice straw. The invention consists in producin...
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WO/2021/255613A1 |
The present invention is directed to an improved method for recirculation of formic acid in a process for preparing dissolving pulp, in which sugars are extracted from pre-hydrolysis liquor.
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WO/2021/239649A1 |
The present disclosure generally relates to a method for treatment of a lignocellulosic biomass. The method comprises the steps of pretreating the lignocellulosic biomass material in a pretreatment arrangement to form a pretreated biomas...
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WO/2021/239647A1 |
The present disclosure generally relates to a method for controlled pretreatment of lignocellulosic biomass. The method comprises the steps of: Pretreating (S10) a lignocellulosic biomass material in a pretreatment arrangement, the pretr...
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WO/2021/231096A1 |
The present invention provides for a method to produce a sugar compound from a biomass, the method comprising: (a) providing a first mixture comprising a solubilized biomass and an alkanolamine; (b) recovering at least part of the alkano...
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WO/2021/213741A1 |
In a process for oxidation of white liquor, in particular of white liquor used in a process for production of paper or cellulose, the oxygen required for the oxidation is supplied to the reactor or the reactors in which the oxidation is ...
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WO/2021/214387A1 |
According to an example aspect of the present invention, there is provided a method for prehydrolysing lignocellulosic chip material in a reaction vessel by a prehydrolysis reaction carried out in the presence of steam at a reaction temp...
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WO/2021/209725A1 |
The invention relates to the production of steam-cracked biomass in the form of black pellets in the field of solid biofuels. More particularly, the invention relates to the production of black pellets from a heterogeneous biomass. The a...
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WO/2021/209586A1 |
A process for delignification of wood fibers is provided, comprising a) providing a lignin-containing cellulosic pulp selected from chemical pulp and semi-chemical pulp, said pulp having a weight content of magnesium of at least 0.001 % ...
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WO/2021/209075A1 |
Provided are an ultra-fine high-performance microcrystalline cellulose product and a preparation method therefor. The microcrystalline cellulose product has an average particle diameter D50 of 1-25 μm, and a loose density of 0.50-0.80 g...
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WO/2021/198555A1 |
The invention relates to a method for the separation of lignin from an organic solvent, comprising multiple two-step cycles, wherein each two-step cycle comprises the steps of: adding an aqueous solution to a lignin-containing organic so...
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