It is provided a process of preparing self-polymerized kraft lignin comprising the steps of thermally treating kraft lignin producing self-polymerized lignin; and isolating the self-polymerized lignin. Also provided is the use of self-polymerized kraft lignin as an adhesive for wood panels.
B27D 1/04 - Joining wood veneer with any materialForming articles therebyPreparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefromPlywood sheets
2.
IMPROVED PROCESS FOR THE EXTRACTION OF KRAFT LIGNIN FROM HARDWOOD AND EUCALYPTUS BLACK LIQUORS
22O on a black liquor solids basis; and applying a heat treatment to said black liquor to achieve a cumulative H-factor of 1800-2400 which increases filterability of the precipitated black liquor allowing filtration in conventional industrial filtration equipment such as belt, vertical, or horizontal tray filters at high rates.
There is provided a lignin-based polyurethane foam comprising a polyurethane polymer having polymerized isocyanate and lignin, and wherein the lignin-based polyurethane foam comprises at least 30 % by weight of lignin with respect to the total weight of the polyurethane foam.
C08J 9/12 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
There is provided a process of methylating lignin. The process includes providing an alkaline aqueous phase, which includes lignin, in a reactor chamber. The reactor chamber is pressurized with a gas phase including methyl chloride gas. The reactor chamber is heated to methylate the lignin and obtain methylated lignin.
A process for recovering alkali from power boiler ash is provided. The power boiler ash is first contacted with Na2CO3 to produce a mixture containing settling and non-settling solid particles. A fraction of the settling particles is then separated from the mixture to produce a first clarified alkaline solution. The first clarified alkaline solution contains species such as NaOH and KOH depending upon the power boiler ash characteristics. The non-settling solid particles may optionally be further separated from the first clarified alkaline solution to obtain a second clarified alkaline solution. This process is also applicable for the extraction of alkali from other oxide/hydroxide containing materials.
40 - Treatment of materials; recycling, air and water treatment,
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Kilns. (1) Business advisory services in the field of the pulp and paper industry.
(2) Treatment of materials in pulp and paper industries; waste recycling; mineral processing; recycling of mineral waste.
(3) Consulting services in the field of measurement and analysis of gas and carbon emissions; consulting services in the fields of climate change and its effects on the pulp and paper industry, pulp and paper industry decarbonisation and reduced carbon emission; research and development services in the fields of climate change and its effects on the pulp and paper industry, pulp and paper industry decarbonisation and reduced carbon emission; advisory services relating to industrial engineering; providing scientific quantification of black carbon emissions.
12.
POLYMER MICROSPHERES OF HIERARCHICALLY STRUCTURED CELLULOSE NANOCRYSTALS AND METHOD TO PRODUCE THE SAME
It is provided a microspherical structure comprising an external shell of structured cellulose nanocrystals (CNCs) and at least one polymer, and a core, wherein the core can be hollow or filled with an immiscible medium. It is also provided a method for producing the same comprising spray-drying the mixture of CNCs and polymer through an atomizer and into a drying chamber forming droplets, wherein the solvent used to suspend the CNCs is evaporated and the microspherical structures are formed. These microstructural spheres can have wide industrial, medical and pharmaceutical applications, whereby their ingredients and structure are tuned and controlled.
C08L 51/02 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to polysaccharides
The disclosure provides a nanodispersion of cellulose nanocrystals (CNCs) in monoethylene glycol (MEG) as well as a method for dispersing CNCs in MEG and a process for preparing a polymer composites comprising a CNC nanodispersion in MEG comprising copolymerizing said nanodispersion of CNCs and at least one monomer polymerizable with said MEG and/or CNCs.
C08J 3/09 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
It is provided a process to modify lignocellulosic materials with lignin, and incorporating lignin and isocyanates or other wood adhesive in wood products compositions, and their composition, preparation and application for bonding wood products are disclosed. The compositions comprise lignin, derived from a variety of natural resources, isocyanate compounds containing two or more isocyanate functional groups, or other wood adhesives.
The present disclosure generally relates to a scalable, green process for producing non-toxic, all-cellulose super absorbent hydrogels that form instantly after cross-linking. A super absorbent hydrogel can be produced by physical mixing of water-soluble carboxyalkyl polysaccharides such carboxymethyl cellulose and negatively-charged cellulose nanocrystals resulting in instantaneous gelation. Cellulose nanocrystals act as effective cross-linkers when physically mixed with carboxymethyl cellulose in an aqueous medium. The resulting hydrogel possesses excellent absorption properties, and has applications in a wide range of products from hygiene products to medical and industrial super absorbent products.
B01J 20/24 - Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
B01J 20/30 - Processes for preparing, regenerating or reactivating
C08B 15/00 - Preparation of other cellulose derivatives or modified cellulose
16.
Method of transforming high consistency pulp fibers into pre-dispersed semi-dry and dry fibrous materials
The present invention is directed to a method of transforming a pulp fibrous into a pre-dispersed semi-dry or dry fibrous material and to the material produced. The method opens, de-entangles and fibrillates the fibrous material of the input pulp. The method mixes the input fibrous with chemicals while evaporating moisture in an updated mechanical disc refiner process. The refiner operates to set three process variables: 1) applied refining specific energy; 2) refiner gap opening and 3) refiner output consistency. Depending on the feed pulp type and consistency, the refiner's output is a pre-dispersed semi-dry fibrous material of 30 to 99% solids with 70 to 100% of separated fibers that depending on chemical treatment are loosely entangled fibrous that disperse in water using common techniques. The pre-dispersed semi-dry output may be further processed inline or by batch process air agitation at velocities sufficient to further separate fibers and loosen fibrous entanglements.
The present provides a concrete and mortar mix and composition thereof with poor quality sand such as desert sand, hydraulic binder (cement) and filamentous cellulose, where the desert sand/spherical sand replaces conventional concrete river sands. The present disclosure also relates a filamentous cellulose, such as, cellulose filaments (CF), cellulose nano filaments, cellulose nanofibrils (CNF) and microfibrillated cellulose (MFC) as a concrete/mortar and sand adhesion additive with hydraulic binder (cement), and to a method of making the concrete. This method also relates to a method to prevent the sliding of individual sand grains against one another and therefor similarly contributes to the stabilization of the building materials.
A water-based process was developed for the synthesis of aminated lignin copolymers with high MW, thermal stability and solubility in water over a wide range of p H values. The cationic lignin copolymer described herein comprises: a grafting ratio of (weight of cationic amine compound)/(weight of lignin) of 70 to 200% and a charge density of +1.4-3.0 meq/g. This cationic lignin copolymer can be used as a flocculant in numerous wastewater streams including municipal and industrial systems and sludge dewatering in the pulp & paper, mining and oil industries.
It is provided a method of producing a polymer emulsion composition comprising the steps of dispersing cellulose nanocrystals (CNCs) in water producing a CNCs aqueous suspension; dissolving a cationic initiator in the CNCs aqueous suspension producing a mixture of CNCs-initiator; heating the mixture of CNCs- initiator; incorporating a monomer in the heated mixture of CNCs-initiator; and polymerizing the monomer producing a polymer emulsion comprising CNC nanoparticles embedded in nanocomposite particles, wherein CNC nanoparticles are uniformly distributed inside the nanocomposite particles, producing a surfactant-free emulsion polymerization system comprising CNC nanoparticles uniformly distributed inside the nanocomposite particles.
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
C08F 2/44 - Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
It is provided an emulsion stabilized by cellulose nanocrystals (CNC), and methods for producing the emulsion, controlling and/or tuning the rheological properties of the emulsion. Accordingly, it is demonstrated herein that emulsions stabilized by cellulose nanocrystals have tunable flow, or rheological, properties when subjected to external load, as well as long-term storage stability. That is to say, these emulsions can be solid under no load, but flow only when modulated pressure or load is externally applied. Once the external pressure or load is relieved, the emulsion returns to solid state.
Methods and systems for controlling operation of a smelt dissolving tank receiving a flow of smelt and having a vent stack in fluid communication are provided. A dissolving liquid is injected into the smelt dissolving tank at a predetermined injection rate. A temperature of a flow of vapour in the vent stack is measured with a sensor. The injection rate of the dissolving liquid is controlled based on the temperature of the flow of vapour.
The disclosure relates to an aqueous dispersion comprising a rubber latex, a CNC and a curing package, said curing package comprising a metal oxide; a process for preparing a dispersion of a metal oxide in a latex composition and a process for preparing a rubber composite.
C08J 3/215 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase the polymer being premixed with a liquid phase at least one additive being also premixed with a liquid phase
C08J 3/03 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
C08K 3/011 - Crosslinking or vulcanising agents, e.g. accelerators
A process for recovering alkali from power boiler ash is provided. The power boiler ash is first contacted with Na2CO3 to produce a mixture containing settling and non-settling solid particles. A fraction of the settling particles is then separated from the mixture to produce a first clarified alkaline solution. The first clarified alkaline solution contains species such as NaOH and KOH depending upon the power boiler ash characteristics. The non-settling solid particles may optionally be further separated from the first clarified alkaline solution to obtain a second clarified alkaline solution. This process is also applicable for the extraction of alkali from other oxide/hydroxide containing materials.
23 3 to produce a mixture containing settling and non-settling solid particles. A fraction of the settling particles is then separated from the mixture to produce a first clarified alkaline solution. The first clarified alkaline solution contains species such as NaOH and KOH depending upon the power boiler ash characteristics. The non-settling solid particles may optionally be further separated from the first clarified alkaline solution to obtain a second clarified alkaline solution. This process is also applicable for the extraction of alkali from other oxide/hydroxide containing materials.
The present invention relates to a method of producing furfural and extracting lignin from a hemi-cellulosic biomass solution comprising a total quantity of C5 sugars, comprising the steps of heating the hemi-cellulosic biomass solution to a temperature of at least about 200° C.; acidifying the hemi-cellulosic biomass solution with acid to produce the furfural in vapor phase; and condensing the furfural to recover furfural in solution, wherein the furfural is produced at a total molar yield of at least 70% of moles of furfural produced/the total moles C5 sugars present in the initial hemi-cellulosic biomass solution. Low molecular weight lignin can also be recovered from the hemi-cellulosic biomass solution prior to furfural production by membrane concentration, acidification, coagulation and filtration.
The disclosure provides a nanodispersion of cellulose nanocrystals (CNCs) in monoethylene glycol (MEG) as well as a method for dispersing CNCs in MEG and a process for preparing a polymer composites comprising a CNC nanodispersion in MEG comprising copolymerizing said nanodispersion of CNCs and at least one monomer polymerizable with said MEG and/or CNCs.
C08J 3/11 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids from solid polymers
C08J 3/26 - Crosslinking, e.g. vulcanising, of macromolecules of latex
The disclosure provides a nanodispersion of cellulose nanocrystals (CNCs) in monoethylene glycol (MEG) as well as a method for dispersing CNCs in MEG and a process for preparing a polymer composites comprising a CNC nanodispersion in MEG comprising copolymerizing said nanodispersion of CNCs and at least one monomer polymerizable with said MEG and/or CNCs.
C08J 3/11 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids from solid polymers
C08J 3/26 - Crosslinking, e.g. vulcanising, of macromolecules of latex
It is provided a microspherical structure comprising an external shell of structured cellulose nanocrystals (CNCs) and at least one polymer, and a core, wherein the core can be hollow or filled with an immiscible medium. It is also provided a method for producing the same comprising spray-drying the mixture of CNCs and polymer through an atomizer and into a drying chamber forming droplets, wherein the solvent used to suspend the CNCs is evaporated and the microspherical structures are formed. These microstructural spheres can have wide industrial, medical and pharmaceutical applications, whereby their ingredients and structure are tuned and controlled.
C08L 51/02 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to polysaccharides
C08L 101/00 - Compositions of unspecified macromolecular compounds
29.
Lignin depolymerization process using chemicals recoverable by the kraft recovery cycle
The present relates to a process for the depolymerization of lignin using chemicals recoverable by the soda or kraft mill recovery cycles. The process involves the use of sodium hydroxide or white liquor to depolymerize lignin in black liquor or other lignins (e.g. hydrolysis lignin, kraft lignin) by conducting the reaction at 170-250° C. for up to 3 hours in the presence or absence of a co-solvent and a capping agent. The depolymerized lignin is then obtained by acidifying the reaction products to a low pH to precipitate the de-polymerized lignin, followed by particle coagulation, cake filtration and washing with acid and water to obtain a purified depolymerized lignin product.
C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
30.
POLYMER MICROSPHERES OF HIERARCHICALLY STRUCTURED CELLULOSE NANOCRYSTALS AND METHOD TO PRODUCE THE SAME
It is provided a microspherical structure comprising an external shell of structured cellulose nanocrystals (CNCs) and at least one polymer, and a core, wherein the core can be hollow or filled with an immiscible medium. It is also provided a method for producing the same comprising spray-drying the mixture of CNCs and polymer through an atomizer and into a drying chamber forming droplets, wherein the solvent used to suspend the CNCs is evaporated and the microspherical structures are formed. These microstructural spheres can have wide industrial, medical and pharmaceutical applications, whereby their ingredients and structure are tuned and controlled.
C08L 101/00 - Compositions of unspecified macromolecular compounds
C08L 51/02 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to polysaccharides
31.
PIEZOELECTRIC MATERIALS AND STRUCTURES BASED ON CELLULOSE NANOCRYSTALS
This invention describes a type of all-organic piezoelectric material based on cellulose nanocrystals (CNCs). This type of material is flexible and transparent, and its properties can be tuned by adjusting the composition and ionic strength. The fabrication of this type of piezoelectric material can be carried out entirely in an aqueous medium and does not require high temperature poling and stretching treatment. It renders possible a commercially viable route to producing inexpensive, sustainable, eco-friendly high piezoelectric-response organic materials for sensors, transducers, actuators, and energy harvest applications.
H01L 41/18 - Selection of materials for piezo-electric or electrostrictive elements
B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
H01L 41/27 - Manufacturing multilayered piezo-electric or electrostrictive devices or parts thereof, e.g. by stacking piezo-electric bodies and electrodes
32.
Preparation of solvent and polymer redispersible formulations of dried cellulose nanocrystals (CNC)
The disclosure provides redispersible CNC. The CNC disclosed herein is redispersible in non-polar and polar organic solvents as well as polar and non-polar polymers such as polyethylene or polypropylene. The disclosure surprisingly also provides redispersible CNC bearing improved redispersion in aqueous systems and most particularly in high ionic strength aqueous systems which usually require significant mixing energy to achieve dispersion.
C08J 3/09 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
C30B 7/14 - Single-crystal growth from solutions using solvents which are liquid at normal temperature, e.g. aqueous solutions the crystallising materials being formed by chemical reactions in the solution
The present disclosure generally relates to a scalable, green process for producing non-toxic, all- cellulose super absorbent hydrogels that form instantly after cross-linking. A super absorbent hydrogel can be produced by physical mixing of water-soluble carboxyalkyl polysaccharides such carboxymethyl cellulose and negatively-charged cellulose nanocrystals resulting in instantaneous gelation. Cellulose nanocrystals act as effective cross-linkers when physically mixed with carboxymethyl cellulose in an aqueous medium. The resulting hydrogel possesses excellent absorption properties, and has applications in a wide range of products from hygiene products to medical and industrial super absorbent products.
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
B01J 20/30 - Processes for preparing, regenerating or reactivating
The present disclosure generally relates to a scalable, green process for producing non-toxic, all- cellulose super absorbent hydrogels that form instantly after cross-linking. A super absorbent hydrogel can be produced by physical mixing of water-soluble carboxyalkyl polysaccharides such carboxymethyl cellulose and negatively-charged cellulose nanocrystals resulting in instantaneous gelation. Cellulose nanocrystals act as effective cross-linkers when physically mixed with carboxymethyl cellulose in an aqueous medium. The resulting hydrogel possesses excellent absorption properties, and has applications in a wide range of products from hygiene products to medical and industrial super absorbent products.
B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
5 g/mol; and a charge density of −1 to −7.2 meq/g. The anionic lignin copolymers described herein which have a molecular weight range of 000-50,000 g/mol can be used as dispersants of negatively charged molecules or particles in numerous process or wastewater streams (e.g. concrete admixtures, gypsum slurries, textile dye) while such copolymers in a molecular weight range of 90,000-740,000 g/mole can be used as flocculants of positively charged molecules or particles in numerous process and wastewater streams including industrial and municipal systems and sludge dewatering in the textile dye, pulp & paper, mining and oil industries.
C02F 103/10 - Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
C02F 103/28 - Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
C02F 103/30 - Nature of the water, waste water, sewage or sludge to be treated from the textile industry
C02F 103/36 - Nature of the water, waste water, sewage or sludge to be treated from the chemical industry not provided for in groups from the manufacture of organic compounds
The present disclosure is directed to a Pickering emulsion comprising cellulose filaments. The heterogeneity of the cellulose filament material is critical and beneficial to the formation of stable emulsions. Emulsions with high stability can be prepared by controlling the CF surface properties. It is provided an emulsion comprising an internal phase dispersed in a continuous external phase and cellulose filaments located at the interface of the internal phase and the external phase, wherein the emulsion comprises 50% in volume or more of the internal phase and a method of producing same.
A temperature sensor device and a system for measuring temperature of a fast moving surface are described herein. A sensor body comprising a temperature sensor for measuring temperature of the moving surface. The sensor body has an engagement surface for contacting the moving surface. A biasing mechanism is coupled to the sensor body for providing pressure to maintain the engagement surface in contact with moving surface and for allowing the engagement surface to pivot with the moving surface when the moving surface deflects. An electronics module is connected to the temperature sensor for determining temperature data indicative of the temperature of the moving surface and for transmitting the temperature data to an external device. The temperature sensor device and/or the system may be used for measuring temperature of a saw blade.
G01K 13/08 - Thermometers specially adapted for specific purposes for measuring temperature of moving solid bodies in rotary movement
B27B 5/29 - Sawing machines working with circular saw bladesComponents or equipment therefor DetailsComponent partsAccessories
G01K 7/22 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat using resistive elements the element being a non-linear resistance, e.g. thermistor
B23D 59/02 - Devices for lubricating or cooling circular saw blades
A temperature sensor device and a system for measuring temperature of a fast moving surface are described herein. A sensor body comprising a temperature sensor for measuring temperature of the moving surface. The sensor body has an engagement surface for contacting the moving surface. A biasing mechanism is coupled to the sensor body for providing pressure to maintain the engagement surface in contact with moving surface and for allowing the engagement surface to pivot with the moving surface when the moving surface deflects. An electronics module is connected to the temperature sensor for determining temperature data indicative of the temperature of the moving surface and for transmitting the temperature data to an external device. The temperature sensor device and/or the system may be used for measuring temperature of a saw blade.
The present provides a concrete and mortar mix and composition thereof with poor quality sand such as desert sand, hydraulic binder (cement) and filamentous cellulose, where the desert sand /spherical sand replaces conventional concrete river sands. The present disclosure also relates a filamentous cellulose, such as, cellulose nano filaments (CF), cellulose nano filaments, cellulose nanofibrils (CNF) and microfibrillated cellulose (MFC) as a concrete/mortar and sand adhesion additive with hydraulic binder (cement), and to a method of making the concrete. This method also relates to a method to prevent the sliding of individual sand grains against one another and therefor similarly contributes to the stabilization of the building materials.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
40.
DESERT SAND AND FILAMENTOUS CELLULOSE IN CONCRETE AND MORTAR
The present provides a concrete and mortar mix and composition thereof with poor quality sand such as desert sand, hydraulic binder (cement) and filamentous cellulose, where the desert sand /spherical sand replaces conventional concrete river sands. The present disclosure also relates a filamentous cellulose, such as, cellulose nano filaments (CF), cellulose nano filaments, cellulose nanofibrils (CNF) and microfibrillated cellulose (MFC) as a concrete/mortar and sand adhesion additive with hydraulic binder (cement), and to a method of making the concrete. This method also relates to a method to prevent the sliding of individual sand grains against one another and therefor similarly contributes to the stabilization of the building materials.
C04B 28/02 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
Novel meltable lignin compositions having tailored compatibilities, moisture/water-resistant adhesion characteristics, and low to medium glass transition temperatures (30 to 120oC) desirable for applications in the manufacturing of various products and the integration in the formulations of adhesives, coatings, plastics, composites and masterbatches, are obtained by blending at low temperatures (0-120oC) dry lignins (0 to 10% moisture), in their hydrogen or protonated forms - hereby referred to as H-forms (pH = 2.3-6.5 for a 10% aqueous suspension), with a reactive and/or interactive molecule or combination of molecules.
LwLw; and - a polymer in an amount of from 2 to 40 wt% based on the weight of the extensible paper; wherein the extensible paper has a Gurley air resistance below 20 s/100 mL_ and an elongation at break of at least 7%.
D21F 13/10 - Methods or apparatus for making discontinuous sheets of paper, pulpboard, or cardboard, or of wet web, for fibreboard production using board presses
The present disclosure provides a core-shell nanocomposite material comprising an intrinsically conductive polymer (ICP) and surface-modified cellulose nanocrystals (CNCs) as well as synthesis for preparing same and its use thereof in various applications.
H01B 1/12 - Conductors or conductive bodies characterised by the conductive materialsSelection of materials as conductors mainly consisting of other non-metallic substances organic substances
A composite and method for producing the composite by incorporating wood or wood pulp fibres with a suitable thermoplastic polymer and coupling agent are described. Homogeneous, void-free transparent/translucent thermoplastic materials in the form of pellets, films or three-dimensional moldable products are produced. The wood pulp fibres can be discrete natural fibres, and flexible assemblies of nano to micro elements, e.g., assemblies of aggregated carbon nanotubes. It is also possible to use our vacuum-assisted co-extrusion process to produce hybrid composites comprising the wood pulp fibre and a further rigid fibre, like glass or carbon fibres, and a flexible fibre or fibrillar network, like cellulose fibres or cellulose filaments. The thermoplastic resin can be, but not limited to, polyolefins, like polypropylene or polyethylene, or polyesters, like polylactic acid, or co-polymers, like acrylonitrile-butadiene-styrene terpolymer.
B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
B29C 70/44 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
C08J 3/205 - Compounding polymers with additives, e.g. colouring in the presence of a liquid phase
B29C 48/14 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
B29C 48/18 - Articles comprising two or more components, e.g. co-extruded layers the components being layers
B29B 7/48 - MixingKneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
B29K 1/00 - Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
B29C 48/57 - Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
B29C 48/875 - Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
B29C 48/54 - Screws with additional forward-feeding elements
B29C 48/55 - Screws having reverse-feeding elements
B29B 9/14 - Making granules characterised by structure or composition fibre-reinforced
B29B 9/06 - Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
It is provided a process to modify lignocellulosic materials with lignin, and incorporating lignin and isocyanates or other wood adhesive in wood products compositions, and their composition, preparation and application for bonding wood products are disclosed. The compositions comprise lignin, derived from a variety of natural resources, isocyanate compounds containing two or more isocyanate functional groups, or other wood adhesives.
It is provided a process to modify lignocellulosic materials with lignin, and incorporating lignin and isocyanates or other wood adhesive in wood products compositions, and their composition, preparation and application for bonding wood products are disclosed. The compositions comprise lignin, derived from a variety of natural resources, isocyanate compounds containing two or more isocyanate functional groups, or other wood adhesives.
A ready-to-mold reinforced thermoplastic sheet molding compound material comprising water dispersible cellulose filaments (CF). The content of CF being of 5 wt% to 50 wt% by dry weight. The CF have a length of at least 100 μηι, and a cross-sectional dimension of about 30 to about 300 nm, and are substantially free of fibrillated cellulose. The TP-SMC material also comprises 15 wt% to 25 wt% by dry weight of at least one filler having a particle size of up to 100 μηι; and 25 wt% to 70 wt% by dry weight of a thermoplastic fiber pulp or powder having a melting temperature below 200°C. The ready-to-mold reinforced material can also comprise a coupling agent and has a bulk density of 350 to 650 kg/m3 and a dry basis weight of 0.7 to 3.8 kg/m2. A wet laid process for producing said ready-to- mold reinforced material and related molded product.
B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
C08J 5/04 - Reinforcing macromolecular compounds with loose or coherent fibrous material
A redispersible, chemically modified cellulose nanocrystal comprising an ionic adduct of a negative ion of sulfate, phosphate half-ester, carboxylic acid or mixtures thereof and a positively charged protonated amine compound. The modified cellulose nanocrystals are readily redispersible in a variety of media and produce stable emulsions. The modified cellulose nanocrystals are produced by adding to an aqueous suspension of acidic cellulose nanocrystals, a quantity of the amine compound to increase the pH of the suspension to about below the pKa of said amine, mixing and drying the resulting suspension to produce the redispersible CNC.
A redispersible, chemically modified cellulose nanocrystal comprising an ionic adduct of a negative ion of sulfate, phosphate half-ester, carboxylic acid or mixtures thereof and a positively charged protonated amine compound. The modified cellulose nanocrystals are readily redispersible in a variety of media and produce stable emulsions. The modified cellulose nanocrystals are produced by adding to an aqueous suspension of acidic cellulose nanocrystals, a quantity of the amine compound to increase the pH of the suspension to about below the pKa of said amine, mixing and drying the resulting suspension to produce the redispersible CNC.
Cement composite boards comprising cellulose filaments (CF) and/or CF-containing pulp, are described. The composite boards have at least an improved modulus of rupture when compared with similar board that are free of CF. Methods for producing the CF and/or CF-containing pulp reinforced cement boards are also described. The CF cement composite board comprises: cellulose filaments (CF) and/or CF-containing pulp, and cement, wherein the CF has an aspect ratio of 200 to 5000, comprising a weight% of CF is from 1% to 20% by weight of the composite board. The composite boards herein described may have a modulus of rupture of more than 7 MPa.
The present relates to a process for the depolymerization of lignin using chemicals recoverable by the soda or kraft mill recovery cycles. The process involves the use of sodium hydroxide or white liquor to depolymerize lignin in black liquor or other lignins (e.g. hydrolysis lignin, kraft lignin) by conducting the reaction at 170-250 C for up to 3 hours in the presence or absence of a co-solvent and a capping agent. The depolymerized lignin is then obtained by acidifying the reaction products to a low pH to precipitate the de-polymerized lignin, followed by particle coagulation, cake filtration and washing with acid and water to obtain a purified depolymerized lignin product.
C08J 11/12 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
53.
DEPOLYMERIZATION OF LIGNIN FOR THE PRODUCTION OF BIO-BASED POLYOLS AND PHENOLS AND LIGNIN-BASED PF/PU/EPOXY RESINS/FOAMS
The present relates to a process for the depolymerization of a feedstock comprising lignin producing depolymerized lignins comprising the loading of the feedstock, a catalyst, a polyalcohol, and water into a reactor; heating the reactor to about 150-300°C to depolymerize the lignin producing a depolymerized lignin mixture; stopping the depolymerization reaction by quenching with cold water; acidifying/neutralizing the depolymerized lignin mixture derived products; precipitating depolymerized lignin and solid residues from the depolymerized lignin; dissolving the precipitated depolymerized lignin and solid residues in acetone; and separating the depolymerized lignin from the solid residues by filtration producing a solid depolymerized lignin. The produced solid depolymerized lignin can be used in the production of lignin-based rigid polyurethane foam, a phenol formaldehyde resole and a lignin-based epoxy resin with a high percentage of bio-content (≥ 50 wt. %).
C08J 11/10 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
B27N 1/02 - Mixing the material with binding agent
C08L 61/12 - Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols with polyhydric phenols
C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
The present relates to a process for the depolymerization of lignin using chemicals recoverable by the soda or kraft mill recovery cycles. The process involves the use of sodium hydroxide or white liquor to depolymerize lignin in black liquor or other lignins (e.g. hydrolysis lignin, kraft lignin) by conducting the reaction at 170-250 °C for up to 3 hours in the presence or absence of a co-solvent and a capping agent. The depolymerized lignin is then obtained by acidifying the reaction products to a low pH to precipitate the de-polymerized lignin, followed by particle coagulation, cake filtration and washing with acid and water to obtain a purified depolymerized lignin product.
C08J 11/12 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by dry-heat treatment only
C07G 1/00 - Low-molecular-weight derivatives of lignin
Methods and systems for controlling operation of a smelt dissolving tank receiving a flow of smelt and having a vent stack in fluid communication are provided. A dissolving liquid is injected into the smelt dissolving tank at a predetermined injection rate. A temperature of a flow of vapour in the vent stack is measured with a sensor. The injection rate of the dissolving liquid is controlled based on the temperature of the flow of vapour.
Methods and systems for controlling operation of a smelt dissolving tank receiving a flow of smelt and having a vent stack in fluid communication are provided. A dissolving liquid is injected into the smelt dissolving tank at a predetermined injection rate. A temperature of a flow of vapour in the vent stack is measured with a sensor. The injection rate of the dissolving liquid is controlled based on the temperature of the flow of vapour.
An acidic water-based process was developed for the synthesis of anionic lignin copolymers with adjustable MW, thermal stability and solubility in water. The anionic lignin copolymer described herein comprises: a molecular weight of 5,000 to 7.4 X 105 g/mol; and a charge density of -1 to -7.2 meq/g. The anionic lignin copolymers described herein which have a molecular weight range of 000-50,000 g/mol can be used as dispersants of negatively charged molecules or particles in numerous process or wastewater streams (e.g. concrete admixtures, gypsum slurries, textile dye) while such copolymers in a molecular weight range of 90,000-740,000 g/mole can be used as flocculants of positively charged molecules or particles in numerous process and wastewater streams including industrial and municipal systems and sludge dewatering in the textile dye, pulp & paper, mining and oil industries.
A water-based process was developed for the synthesis of aminated lignin copolymers with high MW, thermal stability and solubility in water over a wide range of p H values. The cationic lignin copolymer described herein comprises: a grafting ratio of (weight of cationic amine compound) / (weight of lignin) of 70 to 200% and a charge density of +1.4-3.0 meq/g. This cationic lignin copolymer can be used as a flocculant in numerous wastewater streams including municipal and industrial systems and sludge dewatering in the pulp & paper, mining and oil industries.
A water-based process was developed for the synthesis of aminated lignin copolymers with high MW, thermal stability and solubility in water over a wide range of p H values. The cationic lignin copolymer described herein comprises: a grafting ratio of (weight of cationic amine compound) / (weight of lignin) of 70 to 200% and a charge density of +1.4-3.0 meq/g. This cationic lignin copolymer can be used as a flocculant in numerous wastewater streams including municipal and industrial systems and sludge dewatering in the pulp & paper, mining and oil industries.
An acidic water-based process was developed for the synthesis of anionic lignin copolymers with adjustable MW, thermal stability and solubility in water. The anionic lignin copolymer described herein comprises: a molecular weight of 5,000 to 7.4 X 105 g/mol; and a charge density of -1 to -7.2 meq/g. The anionic lignin copolymers described herein which have a molecular weight range of 000-50,000 g/mol can be used as dispersants of negatively charged molecules or particles in numerous process or wastewater streams (e.g. concrete admixtures, gypsum slurries, textile dye) while such copolymers in a molecular weight range of 90,000-740,000 g/mole can be used as flocculants of positively charged molecules or particles in numerous process and wastewater streams including industrial and municipal systems and sludge dewatering in the textile dye, pulp & paper, mining and oil industries.
The present disclosure relates to a process for preparing coated cellulose nanocrystals (CNCs) and relates as well to coated cellulose nanocrystals (CNCs) obtainable by the process described herein. These new CNC hybrid nanomaterials are expected to be useful, for example, for the conjugation and electrostatic complexation with various functional moieties such as free metal ions, carboxylic acids, and epoxy and aldehyde derivatives. The disclosure further relates to a method to fabricate N-doped carbon nanomaterial from the coated CNCs.
D01F 9/28 - Carbon filamentsApparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds from polyamides
D01F 9/16 - Carbon filamentsApparatus specially adapted for the manufacture thereof by decomposition of organic filaments from products of vegetable origin or derivatives thereof, e.g. from cellulose acetat
B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
62.
SOUND INSULATING MAT, METHOD OF MANUFACTURING THE SAME, NOISE CONTROL SYSTEM COMPRISING THE SAME AND ITS USE
There is provided a sound insulating mat for sound insulation comprising at least a layer of combined natural fibers-binder web. The web comprises natural fibers in the range of 60 to 9wt.% of the web; and a synthetic binder in the range of 5 to 40 wt.% of the web. The web comprises a thickness and at least an upper surface and a lower surface opposite each other, and has a bulk density of 40 to 150 kg/m3. There is also provided a method for manufacturing the sound insulating mat and a noise control system comprising the sound insulating mat.
B32B 3/30 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layerLayered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a layer with cavities or internal voids characterised by a layer formed with recesses or projections, e.g. grooved, ribbed
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
business consulting services to the forest industry, the wood products industry, the pulp and paper industry and other industries related or allied with these industries; providing consumer and business information in the field of the forestry, wood products, and pulp and paper industries to the public; providing public relations in the field of the forestry, wood products, and pulp and paper industries; association services, namely, promoting the interests of forestry, wood products, pulp and paper industries Educational services, namely, conducting classes, seminars, conferences, workshops in the field of research and standards in forestry, wood products, and pulp and paper, chemicals, bio energy, bio materials, packaging, transportation and building industries, and distributing course materials in connection therewith; developing training courses and assisting in the instruction of persons in both fundamental and applied science, engineering, technology and technical management in relation to the forest and its various uses, reference libraries Researching and conducting scientific and technical experimental and testing work, namely, the testing of forest ecosystems to qualify and quantify forest biomass, the testing of wood to determine its components and new applications for these components, the testing of the optical, chemical and physical properties of wood, pulp and paper, the testing of wood, pulp and paper to identify contaminants, and the testing of new chemicals and conditions in the processing of wood components, wood, fiber, pulp or paper, and the research and development of testing procedures for all of those services; technology supervision in the field of the wood products industry and the paper and wood pulp industries, with all of the above services related to forest management and the processing of forest materials, as required by members of the forestry association or by the forest industry as a whole, the wood products industry, the pulp and paper industry or by other industries related or allied in any manner with these industries; evaluating organizations in the forestry, wood products, and pulp and paper industries to determine whether the organizations conform to an established accreditation standard; development of voluntary standards for forest based products and harvesting, transporting and processing wood for the forestry, the wood products, and the pulp and paper industries; testing of liquid, gas and solid samples and equipment for the forestry, wood products, and pulp and paper industries; calibration services for the forestry, wood products, and pulp and paper industries; and analytical services in the nature of testing of liquid, gas and solid samples for the forestry, wood products, and pulp and paper industries; contract laboratory research for the forest industry, the wood products industry, the pulp and paper industry and industries related or allied to these industries as well as the transportation industry; planning, designing and developing machinery and chemical processes, namely, chemical processes and mechanical devices to separate wood into its components, chemical processes for processing wood and pulp and paper, wood harvesting and handling and processing machinery, pulp and paper handling and processing machinery, used in the manufacture of pulp, paper or other wood products and chemicals; planning, developing, and designing new instruments, namely, devices to measure optical, chemical and physical properties of wood and pulp mill liquors; planning, developing, and designing new instruments, namely, devices to measure components of wood, wood, fiber, pulp and paper; planning, developing, and designing software and methods of research used in the manufacture of pulp, paper and other wood products of relevance for forestry, wood products, and pulp and paper industries; Research, development, and testing services in the field of forestry, wood products manufacturing, pulp and paper, chemicals, bio energy, bio materials, packaging, transportation and building systems, and consulting services related thereto; designing and developing production machinery, equipment, processes and software for the forestry, wood products, pulp and paper, chemical, bio energy, bio materials, packaging and transportation industries; providing on-line non-downloadable software for use in the production of wood and paper pulp and of engineered wood products; providing on-line non-downloadable software for use in identifying and analyzing contaminants, brightness and whiteness in paper pulp and recycled paper; providing on-line non-downloadable software for data acquisition, data organizing, data transfer and for creating reports concerning the productivity, production and operation of forestry equipment, and wood pulp and paper production machinery; providing on-line non-downloadable software for integrating data, analyzing data and creating reports and performance indicators relating to forestry operations, the operation of wood pulp and paper production machinery; providing on-line non-downloadable software used to model, simulate and plan forestry operations using georeferenced base data in conjunction with cost and productivity models; providing on-line non-downloadable software for optimization of forestry operations, namely, for harvesting, logistics and transportation planning; providing on-line non-downloadable software for planning, scheduling, monitoring of forestry supply chain operations and generating key performance indicators; providing on-line non-downloadable software for use in the bio conversion process of cellulose; Technology consultation services in the field of alternative energy, namely, gasifying and combusting alternative fuels
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
business consulting services to the forest industry, the wood products industry, the pulp and paper industry and other industries related or allied with these industries; providing consumer and business information in the field of the forestry, wood products, and pulp and paper industries to the public; providing public relations in the field of the forestry, wood products, and pulp and paper industries; association services, namely, promoting the interests of forestry, wood products, pulp and paper industries Educational services, namely, conducting classes, seminars, conferences, workshops in the field of research and standards in forestry, wood products, and pulp and paper, chemicals, bio energy, bio materials, packaging, transportation and building industries, and distributing course materials in connection therewith; developing training courses and assisting in the instruction of persons in both fundamental and applied science, engineering, technology and technical management in relation to the forest and its various uses, reference libraries Researching and conducting scientific and technical experimental and testing work, namely, the testing of forest ecosystems to qualify and quantify forest biomass, the testing of wood to determine its components and new applications for these components, the testing of the optical, chemical and physical properties of wood, pulp and paper, the testing of wood, pulp and paper to identify contaminants, and the testing of new chemicals and conditions in the processing of wood components, wood, fiber, pulp or paper, and the research and development of testing procedures for all of those services; technology supervision in the field of the wood products industry and the paper and wood pulp industries, with all of the above services related to forest management and the processing of forest materials, as required by members of the forestry association or by the forest industry as a whole, the wood products industry, the pulp and paper industry or by other industries related or allied in any manner with these industries; evaluating organizations in the forestry, wood products, and pulp and paper industries to determine whether the organizations conform to an established accreditation standard; development of voluntary standards for forest based products and harvesting, transporting and processing wood for the forestry, the wood products, and the pulp and paper industries; testing of liquid, gas and solid samples and equipment for the forestry, wood products, and pulp and paper industries; calibration services for the forestry, wood products, and pulp and paper industries; and analytical services in the nature of testing of liquid, gas and solid samples for the forestry, wood products, and pulp and paper industries; contract laboratory research for the forest industry, the wood products industry, the pulp and paper industry and industries related or allied to these industries as well as the transportation industry; planning, designing and developing machinery and chemical processes, namely, chemical processes and mechanical devices to separate wood into its components, chemical processes for processing wood and pulp and paper, wood harvesting and handling and processing machinery, pulp and paper handling and processing machinery, used in the manufacture of pulp, paper or other wood products and chemicals; planning, developing, and designing new instruments, namely, devices to measure optical, chemical and physical properties of wood and pulp mill liquors; planning, developing, and designing new instruments, namely, devices to measure components of wood, wood, fiber, pulp and paper; planning, developing, and designing software and methods of research used in the manufacture of pulp, paper and other wood products of relevance for forestry, wood products, and pulp and paper industries; Research, development, and testing services in the field of forestry, wood products manufacturing, pulp and paper, chemicals, bio energy, bio materials, packaging, transportation and building systems, and consulting services related thereto; designing and developing production machinery, equipment, processes and software for the forestry, wood products, pulp and paper, chemical, bio energy, bio materials, packaging and transportation industries; providing on-line non-downloadable software for use in the production of wood and paper pulp and of engineered wood products; providing on-line non-downloadable software for use in identifying and analyzing contaminants, brightness and whiteness in paper pulp and recycled paper; providing on-line non-downloadable software for data acquisition, data organizing, data transfer and for creating reports concerning the productivity, production and operation of forestry equipment, and wood pulp and paper production machinery; providing on-line non-downloadable software for integrating data, analyzing data and creating reports and performance indicators relating to forestry operations, the operation of wood pulp and paper production machinery; providing on-line non-downloadable software used to model, simulate and plan forestry operations using georeferenced base data in conjunction with cost and productivity models; providing on-line non-downloadable software for optimization of forestry operations, namely, for harvesting, logistics and transportation planning; providing on-line non-downloadable software for planning, scheduling, monitoring of forestry supply chain operations and generating key performance indicators; providing on-line non-downloadable software for use in the bio conversion process of cellulose; Technology consultation services in the field of alternative energy, namely, gasifying and combusting alternative fuels
65.
CHITOSAN-REINFORCED UREA-FORMALDEHYDE ADHESIVES FOR WOOD COMPOSITE MANUFACTURING
It is disclosed chitosan-reinforced urea-formaldehyde (UF) adhesives for bonding wood-based composites, such as plywood and particleboard, or other fibrous materials and the method of producing the adhesives. The adhesives are produced by mixing unmodified chitosan containing raw material and a urea-formaldehyde resin to produce wood composite adhesive resins.
The present invention is directed to a method of transforming a pulp fibrous into a pre-dispersed semi-dry or dry fibrous material and to the material produced. The method opens, de-entangles and fibrillates the fibrous material of the input pulp. The method mixes the input fibrous with chemicals while evaporating moisture in an updated mechanical disc refiner process. The refiner operates to set three process variables: 1) applied refining specific energy; 2) refiner gap opening and 3) refiner output consistency. Depending on the feed pulp type and consistency, the refiner's output is a pre-dispersed semi-dry fibrous material of 30 to 99% solids with 70 to 100% of separated fibers that depending on chemical treatment are loosely entangled fibrous that disperse in water using common techniques. The pre-dispersed semi-dry output may be further processed inline or by batch process air agitation at velocities sufficient to further separate fibers and loosen fibrous entanglements.
A novel method is disclosed to make cellulose filaments (CF) from wood or other plant fibers with lower energy consumption. The method consists of multi-stage, high consistency refining, followed by low consistency refining or by low consistency, non-refining mechanical treatment, of wood or other plant fibers. The total specific refining energy for the multi-stage, high consistency refining is preferably 2, 000 - 18,000 kWh/t, and more preferably 2,000 - 12,000 kWh/t. The CF produced can be used as a superior reinforcement additive in the production of paper, tissue or paperboard and in the production of plastic composites. It can also be used as a viscosity or rheology modifier in food products, coatings or drilling muds. The CF produced can also be used to make strong films for application in packaging and in composites.
The present invention is directed to a method of transforming a pulp fibrous into a pre-dispersed semi-dry or dry fibrous material and to the material produced. The method opens, de-entangles and fibrillates the fibrous material of the input pulp. The method mixes the input fibrous with chemicals while evaporating moisture in an updated mechanical disc refiner process. The refiner operates to set three process variables: 1) applied refining specific energy; 2) refiner gap opening and 3) refiner output consistency. Depending on the feed pulp type and consistency, the refiner's output is a pre-dispersed semi-dry fibrous material of 30 to 99% solids with 70 to 100% of separated fibers that depending on chemical treatment are loosely entangled fibrous that disperse in water using common techniques. The pre-dispersed semi-dry output may be further processed inline or by batch process air agitation at velocities sufficient to further separate fibers and loosen fibrous entanglements.
The present description relates to in-plane isotropic products derived from cellulosic filament based compositions that are substantially free of binders; and comprising inorganic fillers with an average particle size of less than 5 μm; and methods for producing these in-plane isotropic products. The method comprising providing a cellulosic filament substantially free of any binder; providing an inorganic filler comprising an average particle size of less than 5 μm; mixing the cellulosic filament and the filler to produce a slurry; transferring the slurry in a preforming jig to produce a wet mat in the jig; and hot press compression molding the mat to produce the in-plane isotropic product. The inorganic fillers were uniquely shown substantially useful to accelerate the final dewatering (drying) in the hot press at 150°C/250 psi and to eliminate delamination issue insitu the molded products. Furthermore, the hot press molded products were remarkably improved with respect to the surface quality and the dimensional stability with outstanding increase in its tensile, flexural and impact properties, all with respect to the cellulosic filament inorganic filler-free molded products.
The method consists of providing a high consistency cellulose pulp with a consistency of 20 to 65 wt% solids, a multi-pass high consistency refining of the high consistency cellulose pulp with a total specific refining energy of 2,000 to 18,000 kWh/t to produce a refined cellulose material, diluting the refined cellulose material to a low consistency of 0.1 to 6 wt% solids to produce a low consistency cellulose material and a mechanical treatment of the low consistency cellulose material with a shearing apparatus at a specific mechanical energy less than 3,000 kWh/t wherein the cellulose filaments is a fibrillated fiber having an aspect ratio of at least 200 to 5000 and a width of 30 nm to 500 nm. This produces cellulose filaments having superior tensile strength at a reduced total specific refining energy.
A novel method is disclosed to make cellulose filaments (CF) from wood or other plant fibers with lower energy consumption. The method consists of multi-stage, high consistency refining, followed by low consistency refining or by low consistency, non-refining mechanical treatment, of wood or other plant fibers. The total specific refining energy for the multi-stage, high consistency refining is preferably 2,000-18,000 kWh/t, and more preferably 2,000-12,000 kWh/t. The CF produced can be used as a superior reinforcement additive in the production of paper, tissue or paperboard and in the production of plastic composites. It can also be used as a viscosity or rheology modifier in food products, coatings or drilling muds. The CF produced can also be used to make strong films for application in packaging and in composites.
A composite and method for producing the composite by incorporating wood or wood pulp fibres with a suitable thermoplastic polymer and coupling agent are described. Homogeneous, void-free transparent/translucent thermoplastic materials in the form of pellets, films or three-dimensional moldable products are produced. The wood pulp fibres can be discrete natural fibres, and flexible assemblies of nano to micro elements, e.g., assemblies of aggregated carbon nanotubes. It is also possible to use our vacuum-assisted co-extrusion process to produce hybrid composites comprising the wood pulp fibre and a further rigid fibre, like glass or carbon fibres, and a flexible fibre or fibrillar network, like cellulose fibres or cellulose filaments. The thermoplastic resin can be, but not limited to, polyolefins, like polypropylene or polyethylene, or polyesters, like polylactic acid, or co-polymers, like acrylonitrile-butadiene-styrene terpolymer.
B29C 70/44 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
C08J 3/20 - Compounding polymers with additives, e.g. colouring
C08L 23/02 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers not modified by chemical after-treatment
The present disclosure is directed to a Pickering emulsion comprising cellulose filaments. The heterogeneity of the cellulose filament material is critical and beneficial to the formation of stable emulsions. Emulsions with high stability can be prepared by controlling the CF surface properties. It is provided an emulsion comprising an internal phase dispersed in a continuous external phase and cellulose filaments located at the interface of the internal phase and the external phase, wherein the emulsion comprises 50% in volume or more of the internal phase and a method of producing same.
The present disclosure is directed to a Pickering emulsion comprising cellulose filaments. The heterogeneity of the cellulose filament material is critical and beneficial to the formation of stable emulsions. Emulsions with high stability can be prepared by controlling the CF surface properties. It is provided an emulsion comprising an internal phase dispersed in a continuous external phase and cellulose filaments located at the interface of the internal phase and the external phase, wherein the emulsion comprises 50% in volume or more of the internal phase and a method of producing same.
It is provided a process for dewatering a biosolid slurry comprising adding a lignocellulosic material with reduced particle sizes of about 0.5 to 10 mm to a biosolid combined slurry (CS), composed of a primary slurry (PS) and a secondary slurry (SS), blending the CS and the lignocellulosic material to produce an amended combined slurry (ACS), thickening the ACS; and dewatering the thickened ACS to produce a combined solids cake. An acid is applied either to the PS, SS, CS or ACS but preferably to the SS to achieve the full benefit.
The present disclosure relates to wood pulp fiber- or cellulose filament-reinforced bulk molding compounds, composites, compositions and methods for preparation thereof. The composition comprises a resin; about 0.5 to about 15 wt. % of a 5 cellulosic reinforcement wherein the cellulosic reinforcement is chosen from wood-pulp fibers, cellulose filaments (CF) and a mixture thereof; and about 30 to about 65 wt. % of a filler.
An antimicrobial lignin composition derived from wood biomass for use as a food additive is described. The additive comprises enriched lignin, carbohydrates and water. A method of making a microbial inhibiting food matrix and a method of treating food to inhibit microbial growth are also described.
The present invention relates to a method of producing furfural and extracting lignin from a hemi-cellulosic biomass solution comprising a total quantity of C5 sugars, comprising the steps of heating the hemi-cellulosic biomass solution to a temperature of at least about 200°C; acidifying the hemi-cellulosic biomass solution with acid to produce the furfural in vapor phase; and condensing the furfural to recover furfural in solution, wherein the furfural is produced at a total molar yield of at least 70% of moles of furfural produced/the total moles C5 sugars present in the initial hemi-cellulosic biomass solution. Low molecular weight lignin can also be recovered from the hemi-cellulosic biomass solution prior to furfural production by membrane concentration, acidification, coagulation and filtration.
The present invention relates to a method of producing furfural and extracting lignin from a hemi-cellulosic biomass solution comprising a total quantity of C5 sugars, comprising the steps of heating the hemi-cellulosic biomass solution to a temperature of at least about 200.degree.C; acidifying the hemi-cellulosic biomass solution with acid to produce the furfural in vapor phase; and condensing the furfural to recover furfural in solution, wherein the furfural is produced at a total molar yield of at least 70% of moles of furfural produced/the total moles C5 sugars present in the initial hemi-cellulosic biomass solution. Low molecular weight lignin can also be recovered from the hemi-cellulosic biomass solution prior to furfural production by membrane concentration, acidification, coagulation and filtration.
The present relates to a composite sandwich structure comprising a central core made of pultruded lightweight yarns and outer composite skin of pultruded reinforcement fiber rovings. It is provided a method of producing a composite sandwich structure comprising providing pultruded lightweight and co-impregnated yarns, and a co-pultruded reinforcement fiber rovings; and guiding the pultruded lightweight yarns to form a central core and the pultruded reinforcement fiber rovings forming an outer composite skin within at least one heated pultrusion die producing a composite sandwich structure.
B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
The present disclosure relates to composite materials comprising a resin and at least one sheet that comprise optionally cellulose filaments (CF), fillers and optionally reinforcing fibers as well as methods for the preparation thereof. The methods comprise impregnating the sheets comprising the cellulose filaments, fillers and optionally the reinforcing fibers or a stack thereof with resin. The composite materials can optionally comprise at least one other sheet, the at least one other sheet being different from the at least one sheet and comprising fibers chosen from wood pulp, fiberglass, natural fibers and mixtures thereof. The sheet can also be in the form of a panel of a preform.
B32B 27/04 - Layered products essentially comprising synthetic resin as impregnant, bonding, or embedding substance
B29C 70/34 - Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or coreShaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression
C08J 5/24 - Impregnating materials with prepolymers which can be polymerised in situ, e.g. manufacture of prepregs
36 - Financial, insurance and real estate services
37 - Construction and mining; installation and repair services
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Conduite, préparation et organisation de congrès et de salons dans le domaine de la construction des immeubles en bois. Services de publicité, nommément promotion de produits et de services de tiers par le biais d'Internet, de la télévision, de magazines et de journaux; publication de textes publicitaires; conseil en organisation et direction des affaires; services de mises en relations commerciales dans le cadre de salons, nommément organisation d'activités de réseautage et services de réseautage professionnel en ligne; distribution de prix et attribution de récompenses dans le cadre de salons; gérance administrative et commerciale de lieux d'expositions. Services d'aide et de conseil pour l'organisation et la direction des affaires; exploitation d'une banque de données administratives liées aux domaine de la recherche scientifique et de la construction de bâtiments; conseils et information concernant la gestion des affaires commerciales; promotion de la vente de produits et services par la distribution de matériel publicitaire et de concours promotionnels; études de marché.
(2) Consultation en matière immobilière.
(3) Services de construction d'immeubles et de bâtiments. Entretien et nettoyage de bâtiment, d'édifices; réparation, maintenance, rénovation d'immeubles, d'habitations, de locaux à usage commercial et industriel; travaux d'ébénisterie de restauration; fabrication et pose de tout type de charpente bois; construction d'édifices en bois; construction d'éléments en bois, à savoir de fermes, chalets, maisons à ossatures en bois, immeubles à ossatures en bois; construction de bâtiments industriels; construction, montage et assemblage de charpentes et d'ossatures en bois; informations en matière de construction en bois et de réparation maçonnerie; rénovations de bâtiments en bois; services de charpenterie; services d'étanchéité en construction; isolation de bâtiments; travaux de couverture de toits; information en matière de réparation de bâtiments, d'édifices, d'immeubles, d'habitations, de locaux à usage commercial et industriel; informations et conseils en matière de construction de bâtiments, d'édifices, d'immeubles, d'habitations, de locaux à usage commercial et industriel; supervision de travaux de construction; supervision de travaux de fabrication de mobilier en bois.
(4) Services d'enseignement et de formation, d'éducation dans le domaine de la construction. Activités culturelles et services de divertissement, nommément organisation d'un gala dans le domaine de la construction et d'une compétition consistant en la conception de structures innovantes dans le domaine de la construction; éditions de textes, d'illustrations, de livres, de revues, de journaux, de périodiques, de magazines et de publications, publications électroniques et numériques nommément, disques interactifs, disques compacts audionumériques à mémoire morte ; organisation de conférences, forums, congrès, colloques, séminaires, stages et cours dans le domaine de la construction de bâtiments, d'édifices, d'immeubles, d'habitations, de locaux à usage commercial et industriel; montage de programmes radiophoniques et télévisés, de programmes audiovisuels et multimédias; publication de livres; développement de campagnes publicitaires pour des tiers, conception de campagnes promotionnelles pour entreprises de tiers; montages de programmes d'informations, de divertissements radiophoniques et télévisés.
(5) Services scientifiques et technologiques ainsi que services de recherche et de conception y relatifs, nommément services d'évaluation, d'estimation et de recherche dans les domaines techniques, scientifiques et technologiques rendues par des ingénieurs, en rapport avec des opérations de construction de bâtiments; conception et développement d'ordinateurs et de logiciels; études de projets techniques dans le domaine des produits nommément, matériaux, composants, systèmes en bois et à base de bois et de la construction de bâtiments utilisant des produits nommément, matériaux, composants, systèmes en bois ou à base de bois; contrôle de qualité dans l'industrie de la construction des immeubles en bois; planification de travaux de construction; services de certification de bâtiments rendus par des ingénieurs et architectes et constructeurs; travaux d'ingénieurs dans le domaine de la construction de bâtiments en bois; contrôle technique et expertise technique nommément, travaux d'ingénieurs dans le domaine de la construction des immeubles en bois; recherche et développement de nouveaux produits et procédés. Recherches documentaires dans les domaines scientifique et technique dans le domaine du bois. Services d'architecture; conseils en architecture; conseils en matière d'économie d'énergie; recherches en matière de protection de l'environnement; services d'expertises techniques nommément, essais de matériaux; établissement de plans pour la construction; dessin industriel. Services de décoration intérieure. Consultation en décoration intérieure.
36 - Financial, insurance and real estate services
37 - Construction and mining; installation and repair services
41 - Education, entertainment, sporting and cultural services
42 - Scientific, technological and industrial services, research and design
Goods & Services
(1) Conduite, préparation et organisation de congrès et de salons dans le domaine de la construction des immeubles en bois. Services de publicité, nommément promotion de produits et de services de tiers par le biais d'Internet, de la télévision, de magazines et de journaux; publication de textes publicitaires; conseil en organisation et direction des affaires; services de mises en relations commerciales dans le cadre de salons, nommément organisation d'activités de réseautage et services de réseautage professionnel en ligne; distribution de prix et attribution de récompenses dans le cadre de salons; gérance administrative et commerciale de lieux d'expositions. Services d'aide et de conseil pour l'organisation et la direction des affaires; exploitation d'une banque de données administratives liées aux domaine de la recherche scientifique et de la construction de bâtiments; conseils et information concernant la gestion des affaires commerciales; promotion de la vente de produits et services par la distribution de matériel publicitaire et de concours promotionnels; études de marché.
(2) Consultation en matière immobilière.
(3) Services de construction d'immeubles et de bâtiments. Entretien et nettoyage de bâtiment, d'édifices; réparation, maintenance, rénovation d'immeubles, d'habitations, de locaux à usage commercial et industriel; travaux d'ébénisterie de restauration; fabrication et pose de tout type de charpente bois; construction d'édifices en bois; construction d'éléments en bois, à savoir de fermes, chalets, maisons à ossatures en bois, immeubles à ossatures en bois; construction de bâtiments industriels; construction, montage et assemblage de charpentes et d'ossatures en bois; informations en matière de construction en bois et de réparation maçonnerie; rénovations de bâtiments en bois; services de charpenterie; services d'étanchéité en construction; isolation de bâtiments; travaux de couverture de toits; information en matière de réparation de bâtiments, d'édifices, d'immeubles, d'habitations, de locaux à usage commercial et industriel; informations et conseils en matière de construction de bâtiments, d'édifices, d'immeubles, d'habitations, de locaux à usage commercial et industriel; supervision de travaux de construction; supervision de travaux de fabrication de mobilier en bois.
(4) Services d'enseignement et de formation, d'éducation dans le domaine de la construction. Activités culturelles et services de divertissement, nommément organisation d'un gala dans le domaine de la construction et d'une compétition consistant en la conception de structures innovantes dans le domaine de la construction; éditions de textes, d'illustrations, de livres, de revues, de journaux, de périodiques, de magazines et de publications, publications électroniques et numériques nommément, disques interactifs, disques compacts audionumériques à mémoire morte ; organisation de conférences, forums, congrès, colloques, séminaires, stages et cours dans le domaine de la construction de bâtiments, d'édifices, d'immeubles, d'habitations, de locaux à usage commercial et industriel; montage de programmes radiophoniques et télévisés, de programmes audiovisuels et multimédias; publication de livres; développement de campagnes publicitaires pour des tiers, conception de campagnes promotionnelles pour entreprises de tiers; montages de programmes d'informations, de divertissements radiophoniques et télévisés.
(5) Services scientifiques et technologiques ainsi que services de recherche et de conception y relatifs, nommément services d'évaluation, d'estimation et de recherche dans les domaines techniques, scientifiques et technologiques rendues par des ingénieurs, en rapport avec des opérations de construction de bâtiments; conception et développement d'ordinateurs et de logiciels; études de projets techniques dans le domaine des produits nommément, matériaux, composants, systèmes en bois et à base de bois et de la construction de bâtiments utilisant des produits nommément, matériaux, composants, systèmes en bois ou à base de bois; contrôle de qualité dans l'industrie de la construction des immeubles en bois; planification de travaux de construction; services de certification de bâtiments rendus par des ingénieurs et architectes et constructeurs; travaux d'ingénieurs dans le domaine de la construction de bâtiments en bois; contrôle technique et expertise technique nommément, travaux d'ingénieurs dans le domaine de la construction des immeubles en bois; recherche et développement de nouveaux produits et procédés. Recherches documentaires dans les domaines scientifique et technique dans le domaine du bois. Services d'architecture; conseils en architecture; conseils en matière d'économie d'énergie; recherches en matière de protection de l'environnement; services d'expertises techniques nommément, essais de matériaux; établissement de plans pour la construction; dessin industriel. Services de décoration intérieure. Consultation en décoration intérieure.
84.
Process to incorporate wet natural fiber and starch into thermoplastics
The present relates to a process for incorporating of wet natural fiber and starch into thermoplastics and the composite produced. The process for producing the composite comprises steps of: providing a wet natural fiber; providing a starch; providing a plasticizer; providing a thermoplastic; mixing the wet natural fiber, the starch and the plasticizer with water to produce a paste, and compounding the paste with the thermoplastic to produce the composite. The composite in a preferred embodiment comprises 50 weight % natural fiber/starch and a plasticizer; 50 weight % thermoplastic; a tensile modulus greater than 1450 MPa and a tensile strength greater than 41 MPa.
C08L 51/06 - Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCompositions of derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
C08L 97/02 - Lignocellulosic material, e.g. wood, straw or bagasse
C08J 3/20 - Compounding polymers with additives, e.g. colouring
A fractionation process for producing value-added products from a lignocellulosic biomass, comprises: a) mechanically refining the lignocellulosic biomass under mild refining conditions to form a refined biomass pulp with enhanced susceptibility to separation of hemicellulose, cellulose and lignin, and enhanced digestibility of carbohydrates in hydrolysis b) separating hemicellulose and sulfur-free high-quality lignin from cellulose in the refined biomass, and, optionally c) producing various bioproducts from the above said process.
The present invention relates to a structurally enhanced agricultural product containing cellulose filaments (CF), and a method for producing the structurally enhanced agricultural material into the sheets. Applying CF improves significantly the wet-web strength of the agricultural material sheets. The method comprises preparation of a pulp slurry of agricultural materials followed by mixing with a water suspension of CF or CF-containing cellulose fibers. The pulp blend is then used to produce an agricultural material sheet by papermaking process.
The present disclosure relates to a process for preparing coated cellulose nanocrystals (CNCs) and relates as well to coated cellulose nanocrystals (CNCs) obtainable by the process described herein. These new CNC hybrid nanomaterials are expected to be useful, for example, for the conjugation and electrostatic complexation with various functional moieties such as free metal ions, carboxylic acids, and epoxy and aldehyde derivatives. The disclosure further relates to a method to fabricate N-doped carbon nanomaterial from the coated CNCs.
The present disclosure relates to filter media comprising base filter fibers and cellulose filaments. For example, cellulose filaments can increase at least one mechanical property of the filter media as compared to filter media prepared from the base filter fibers alone. The disclosure also relates to various processes for preparing a filter medium, processes for increasing filtration efficiency of a filter medium, processes for increasing a minimum efficiency reporting value (MERV) rating of a filter medium.
Radio-frequency methods for engineered wood products (EWPs), such as thick EWP products and plywood having higher moisture contents are disclosed. For thick EWP products, intermittent RF is used as the sole energy source to heat the thick EWPs. This method for thick EWPs yields a higher panel MC of 9-12% compared to 5-8% from conventional hot pressing. The RF heating process facilitates manufacturing of structural composite lumber (SCL) products including LVL, oriented strand lumber (OSL) and veneer strand lumber (VSL) in addition to sawn lumber. For plywood products, a method of using RF in pre-pressing of stack of veneer layers for preparation of plywood is developed. In a preferred embodiment a conventional cold pre-press is retrofitted with a radio-frequency (RF) generator that pre-heats the stack of veneer layers to 60-80ºC under pressure. The pre-heating allows for a final hot press at lower press temperature and higher MC within the stack.
B27D 1/04 - Joining wood veneer with any materialForming articles therebyPreparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefromPlywood sheets
A composition and a method for producing mesoporous carbon materials with a chiral or achiral organization. In the method, a polymerizable inorganic monomer is reacted in the presence of nanocrystalline cellulose to give a material of inorganic solid with cellulose nanocrystallites organized in a chiral nematic organization. The cellulose can be carbonized through thermal treatment under inert atmosphere (e.g., nitrogen or argon) and the silica may subsequently be removed using aqueous solutions of sodium hydroxide (NaOH) or hydrogen fluoride (HF) to give the stable mesoporous carbon materials that retain the chiral nematic structure of the cellulose. These materials may be obtained as free-standing films with very high surface area. Through control of the reaction conditions the pore-size distribution may be varied from predominantly microporous to predominantly mesoporous materials. These are the first materials to use cellulose as both the structural template and carbon source for a mesoporous carbon material. These are also the first carbon materials to combine mesoporosity with long-range chiral ordering. Possible applications for these materials include: charge storage devices (e.g. supercapacitors and anodes for Li-ion batteries), adsorbents, gas purifiers, light-weight nanocomposite materials, catalyst supports (e.g., for chiral transformations), gas storage, and as a hard-template to generate other materials, preferably with chiral structures.
C04B 35/532 - Shaped ceramic products characterised by their compositionCeramic compositionsProcessing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
C04B 38/00 - Porous mortars, concrete, artificial stone or ceramic warePreparation thereof
C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
91.
A DRY MIXED RE-DISPERSIBLE CELLULOSE FILAMENT/CARRIER PRODUCT AND THE METHOD OF MAKING THE SAME
The present description relates to a process of producing a dry mixed product comprising cellulose filament (CF) and a carrier fibre, and a dry mixed product of re-dispersible cellulose filament and a carrier fibre that permits the CF to retain its dispersibility in water and hence superior reinforcement ability in papermaking furnishes, composite materials, or other materials where CF is used. The process comprises mixing a water suspension of never-dried CF with a cellulose fibre pulp carrier followed by thickening to a suitable concentration so that it can be further processed and dried in a conventional device such as a dryer can of a pulp machine or a flash dryer.
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
C08J 3/20 - Compounding polymers with additives, e.g. colouring
The present description relates to a process of producing a dry mixed product comprising cellulose filament (CF) and a carrier fibre, and a dry mixed product of re-dispersible cellulose filament and a carrier fibre that permits the CF to retain its dispersibility in water and hence superior reinforcement ability in papermaking furnishes, composite materials, or other materials where CF is used. The process comprises mixing a water suspension of never-dried CF with a cellulose fibre pulp carrier followed by thickening to a suitable concentration so that it can be further processed and dried in a conventional device such as a dryer can of a pulp machine or a flash dryer.
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
C08J 3/20 - Compounding polymers with additives, e.g. colouring
The present description relates to a process of producing a dry mixed product comprising cellulose filament (CF) and a carrier fiber, and a dry mixed product of re-dispersible cellulose filament and a carrier fiber that permits the CF to retain its dispersibility in water and hence superior reinforcement ability in papermaking furnishes, composite materials, or other materials where CF is used. The process comprises mixing a water suspension of never-dried CF with a cellulose fiber pulp carrier followed by thickening to a suitable concentration so that it can be further processed and dried in a conventional device such as a dryer can of a pulp machine or a flash dryer.
Acid hydrolysis of biomass is an important step for releasing the component sugars before converting them to fuels and/or biochemicals. During such a process, a significant amount of mineral acid, such as sulfuric acid, is used. In most cases, the residual acid is neutralized with lime before the sugar conversion step. By doing so, a waste calcium sulphate stream is generated and sent to disposal. The efficient separation of acid from the sugars would allow the recycle of the acid and make the entire process more economically viable. We found that a resin bed packed with an acid retardation resin can be used to achieve an efficient separation (i.e. 98.5% recovery of the acid) of the sulfuric acid from the sugars. The resin bed can be simply regenerated with water.
C07C 51/47 - SeparationPurificationStabilisationUse of additives by solid-liquid treatmentSeparationPurificationStabilisationUse of additives by chemisorption
Acid hydrolysis of biomass is an important step for releasing the component sugars before converting them to fuels and/or biochemicals. During such a process, a significant amount of mineral acid, such as sulfuric acid, is used. In most cases, the residual acid is neutralized with lime before the sugar conversion step. By doing so, a waste calcium sulphate stream is generated and sent to disposal. The efficient separation of acid from the sugars would allow the recycle of the acid and make the entire process more economically viable. We found that a resin bed packed with an acid retardation resin can be used to achieve an efficient separation (i.e. 98.5% recovery of the acid) of the sulfuric acid from the sugars. The resin bed can be simply regenerated with water.
C13B 20/14 - Purification of sugar juices using ion-exchange materials
C07C 51/47 - SeparationPurificationStabilisationUse of additives by solid-liquid treatmentSeparationPurificationStabilisationUse of additives by chemisorption
Acid hydrolysis of biomass is an important step for releasing the component sugars before converting them to fuels and/or biochemicals. During such a process, a significant amount of mineral acid, such as sulfuric acid, is used. In most cases, the residual acid is neutralized with lime before the sugar conversion step. By doing so, a waste calcium sulphate stream is generated and sent to disposal. The efficient separation of acid from the sugars would allow the recycle of the acid and make the entire process more economically viable. We found that a resin bed packed with an acid retardation resin can be used to achieve an efficient separation (i.e. 98.5% recovery of the acid) of the sulfuric acid from the sugars. The resin bed can be simply regenerated with water.
C07C 51/47 - SeparationPurificationStabilisationUse of additives by solid-liquid treatmentSeparationPurificationStabilisationUse of additives by chemisorption
Most processes currently being proposed and/or used for the production of lignin from kraft or soda black liquors are capable of producing two main types of lignin: high residual content (HRC) lignin and low residual content (LRC) lignin. Surprisingly, it was discovered that HRC lignin, is a suitable ingredient in alkaline adhesives, particularly wood adhesives of the phenolic type (e.g. resole resins). This biomaterial is environmentally green and remarkably low cost, which makes it an industrially viable material to be used as a novel and major ingredient in phenolic adhesives for the manufacture of exterior grade plywood, laminated veneer lumber, oriented strand board (OSB) and other wood products - this was successfully demonstrated in a number of laboratory experiments as well as several different mill trials. The composition, preparation and application of such wood adhesives are hereby disclosed.
Most processes currently being proposed and/or used for the production of lignin from kraft or soda black liquors are capable of producing two main types of lignin: high residual content (HRC) lignin and low residual content (LRC) lignin. Surprisingly, it was discovered that HRC lignin, is a suitable ingredient in alkaline adhesives, particularly wood adhesives of the phenolic type (e.g. resole resins). This biomaterial is environmentally green and remarkably low cost, which makes it an industrially viable material to be used as a novel and major ingredient in phenolic adhesives for the manufacture of exterior grade plywood, laminated veneer lumber, oriented strand board (OSB) and other wood products - this was successfully demonstrated in a number of laboratory experiments as well as several different mill trials. The composition, preparation and application of such wood adhesives are hereby disclosed.
Most processes currently being proposed and/or used for the production of lignin from kraft or soda black liquors are capable of producing two main types of lignin: high residual content (HRC) lignin and low residual content (LRC) lignin. Surprisingly, it was discovered that HRC lignin, is a suitable ingredient in alkaline adhesives, particularly wood adhesives of the phenolic type (e.g. resole resins). This biomaterial is environmentally green and remarkably low cost, which makes it an industrially viable material to be used as a novel and major ingredient in phenolic adhesives for the manufacture of exterior grade plywood, laminated veneer lumber, oriented strand board (OSB) and other wood products—this was successfully demonstrated in a number of laboratory experiments as well as several different mill trials. The composition, preparation and application of such wood adhesives are hereby disclosed.
The present disclosure relates to a process for extracting sugars from a pretreated lignocellulosic biomass. This process consists of contacting the pretreated lignocellulosic biomass with low charges of an aqueous peroxy acid (PA) solution to produce a liquid fraction (containing a small amount of lignin and hemicellulose degradation products) and a solid fraction containing cellulose, hemicellulose and lignin. The solid fraction can then be subjected to enzymatic hydrolysis with a variety of cell wall-degrading enzymes to produce a lignin-rich residue and a sugar solution that can be fermented to a variety of (bio)chemicals.
