| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 530507000 | Processes utilizing an organic solvent or a compound having alcoholic hydroxy bonded directly to an acyclic carbon, or product thereof | 33 |
| 20090069550 | LIGNIN AND OTHER PRODUCTS ISOLATED FROM PLANT MATERIAL, METHODS FOR ISOLATION AND USE, AND COMPOSITIONS CONTAINING LIGNIN AND OTHER PLANT-DERIVED PRODUCTS - Lignin polymers having distinctive properties, including a generally high molecular weight and generally homogeneous size distribution, as well as preservation of native reactive side groups, are isolated by solvent extraction of plant materials. Methods for isolation of lignin polymers, and for use of the isolated lignin polymers are disclosed. Compositions containing lignin isolated from plant materials, such as carbon fiber composites, resins, adhesive binders and coatings, polyurethane-based foams, rubbers and elastomers, plastics, films, paints, nutritional supplements, food and beverage additives are disclosed. Xylose and xylose derivatives, furfural, fermentable sugars, cellulose and hemi-cellulose products may be used directly or further processed. The lignin polymers and other plant-derived products disclosed herein may be produced in abundance at low cost, and may be used as substitutes for feedstocks originating from fossil fuel or petrochemical sources in the manufacture of various products. | 03-12-2009 |
| 20100249390 | PRODUCTION METHODS FOR SOLUBILIZED LIGNIN, SACCHARIDE RAW MATERIAL AND MONOSACCHARIDE RAW MATERIAL, AND SOLUBILIZED LIGNIN - A new lignin degradation product, a method for producing the same, and methods for producing a saccharide raw material and a monosaccharide raw material are provided. | 09-30-2010 |
| 20110054154 | LIGNOTHERMOPLASTIC - A thermoplastic material made from lignin, polyol and a melting point reducer where the melting point reducer is miscible in the specific polyol employed and where the lignin, polyol and melting point reducer are all miscible when in their melted state. | 03-03-2011 |
| 20110160442 | METHOD FOR THE FRACTIONATION OF KNOTWOOD EXTRACT AND USE OF A LIQUID-LIQUID EXTRACTION FOR PURIFICATION OF KNOTWOOD EXTRACT - The invention relates to a method for the fractionation of knotwood extract, which has been obtained by extraction of knotwood with a hydrophilic solvent. The hydrophilic extract is extracted with a lipophilic solvent to remove lipophilic impurities. The invention also relates to the use of a liquid-liquid extraction for the purification of hydrophilic knotwood extract. The present process provides a purified knotwood extract, which contains more than 90% lignans, flavonoids and stilbenes and less than 10% impurities selected from resin acids, fatty acids, sterols, juvabiones, triglycerides and combinations thereof. | 06-30-2011 |
| 20110313141 | Processing of Biomass - There is described a method of processing biomass which comprises the digestion of biomass material in an aqueous solvent system subjected to ultrasonic waves and separating the biomass into its constituents of lignin, hemicellulose and cellulose. There is also described a system for the processing of biomass which comprises the digestion of biomass material in an aqueous solvent system subjected to ultrasonic waves and separating the biomass into ins constituents of lignin, hemicellulose and cellulose. | 12-22-2011 |
| 20120022240 | LIGNIN PREPARATIONS ISOLATED FROM PLANT MATERIAL, AND METHODS FOR THEIR ISOLATION AND USE - Lignin polymers having distinctive properties, including a generally high molecular weight and generally homogeneous size distribution, as well as preservation of native reactive side groups, are isolated by solvent extraction of plant materials. Methods for isolation of lignin polymers, and for use of the isolated lignin polymers are disclosed. Compositions containing lignin isolated from plant materials, such as carbon fiber composites, resins, adhesive binders and coatings, polyurethane-based foams, rubbers and elastomers, plastics, films, paints, nutritional supplements, food and beverage additives are disclosed. Xylose and xylose derivatives, furfural, fermentable sugars, cellulose and hemi-cellulose products may be used directly or further processed. The lignin polymers and other plant-derived products disclosed herein may be produced in abundance at low cost, and may be used as substitutes for feedstocks originating from fossil fuel or petrochemical sources in the manufacture of various products. | 01-26-2012 |
| 20120116063 | METHODS AND SYSTEMS FOR PROCESSING LIGNOCELLULOSIC MATERIALS AND RELATED COMPOSITIONS - A method comprising: (a) providing a lignocellulosic substrate; (b) contacting said lignocellulosic substrate with an extractant comprising a water-soluble organic solvent to form an extracted substrate and a miscella; (c) removing miscella from said extracted substrate; and (d) hydrolyzing said extracted substrate using a chemically catalyzed process. | 05-10-2012 |
| 20120184721 | METHOD FOR SEPARATING CARBOHYDRATE FROM LIGNOCELLULOSIC SOLID - The present invention provides an apparatus for separating components of a solid feedstock, in particular lignocellulosic solid biomass feedstock, and a method for using the same. The apparatus feeds the solid feedstock in one direction and provides a reaction fluid or an extraction fluid in an opposite direction of the solid feedstock to rapidly separate various components from the solid feedstock. | 07-19-2012 |
| 20130005952 | RECOVERY OF LIGNIN AND WATER SOLUBLE SUGARS FROM PLANT MATERIALS - In one aspect, a process for treating woody plant material is provided, the process involving contacting the plant material with a continuous flow of an aqueous ethanol solution at elevated temperature and pressure under conditions that promote extraction of ethanol-soluble lignin from the plant material and retention of hemicellulose sugars, xylose and cellulose in the treated plant material solids. In another aspect, a process for extracting hemicellulose sugars from lignin-depleted plant material solids is provided, the process involving contacting lignin-depleted plant material with water at elevated temperature and pressure under conditions that promote extraction of hemicellulose sugars from the plant material; and recovering hemicellulose sugars from the liquid mixture. | 01-03-2013 |
| 20130217868 | PREPARATION OF LIGNIN - A method for the preparation of lignin from lignocellulosic material by pulping with alcohol, in particular with a C | 08-22-2013 |
| 20130217869 | METHOD FOR PRODUCTION OF LIGNIN - A method for the preparation of lignin, characterized in that an acid is added to an alkaline alcoholic solution of lignin and the precipitated lignin is separated, and, optionally, from the filtrate alcohol is removed in order to get further lignin; as well as a method for the preparation of a concentrated alkaline, alcoholic solution of lignin by membrane filtration; the use of the lignin thus prepared; and the isolation of hydroxy cinnamic acids from the solution, from which the lignin has been separated. | 08-22-2013 |
| 20130303738 | CHEMICAL MODIFICATION OF LIGNIN AND LIGNIN DERIVATIVES - A method for producing an APL is provided in one example embodiment and includes mixing a solvent, a catalyst, a reagent, and a HPL to create a solution, raising the temperature of the solution to a first reaction temperature, raising the temperature of the solution to a second reaction temperature, allowing reactions in the solution to occur for a predetermined amount of time, precipitating the solution to produce a precipitate, and washing, filtering, and drying the precipitate to produce the APL. | 11-14-2013 |
| 20140046041 | COMPOSITIONS COMPRISING LIGNOCELLULOSIC BIOMASS AND ORGANIC SOLVENT - The present disclosure relates, at least in part, to compositions comprising lignocellulosic biomass and an organic solvent wherein the lignocellulosic biomass comprises 35% or greater of lignin material. The present disclosure relates, at least in part, to compositions comprising lignocellulosic biomass and an organic solvent wherein the lignocellulosic biomass comprises 50% or less of carbohydrate. In certain embodiments the present compositions may have a viscosity of 5000 cps or less. | 02-13-2014 |
| 20140066608 | LIGNIN EXTRACTION FROM LIGNOCELLULOSICS - The present invention is directed to a method to extract lignin from lignocellulosic biomass using lactic acid. | 03-06-2014 |
| 20140163210 | PROCESSES AND APPARATUS FOR LIGNIN SEPARATION IN BIOREFINERIES - The present invention generally provides methods of improving lignin separation during biomass fractionation with an acid to release sugars and a solvent for lignin (such as ethanol). In some embodiments, a digestor is employed to fractionating a feedstock in the presence of a solvent for lignin, sulfur dioxide, and water, to produce a liquor containing hemicellulose, cellulose-rich solids, and lignin. A solid additive is added to the digestor, wherein the solid additive combines with at least a portion of the lignin. Then a mixture of lignin and the solid additive is separated from the liquor, prior to hemicellulose recovery. Optionally, a solid additive may also be introduced to a hydrolysis reactor for converting hemicellulose oligomers to monomers, to improve separation of acid-catalyzed lignin. In some embodiments, the solid additive is gypsum or a gypsum/lignin mixture. | 06-12-2014 |
| 20140187760 | Lignin Precipitation Methods - A method of separating lignin from black liquor from a pulp mill by adjusting the pH of the black liquor is provided. Various additional steps can be used to further process the separated lignin, including washing, drying, and/or comminuting. In certain embodiments, solvents and byproducts are recycled so as to reduce waste and maintain chemical balance within a commercial lignin production facility. | 07-03-2014 |
| 20140249300 | Metal Catalyzed Oxidation of Lignin and Related Compounds - Disclosed are methods for the benzylic oxidation of the lignin and related compounds. The methods include contacting lignin with a mixture containing manganese and iron, in the presence of oxygen to produce a carboxylic acid from lignin or a related compound. In some embodiments, the mixture includes cobalt. | 09-04-2014 |
| 20140357847 | METHOD FOR LIGNIN SEPARATION FROM BLACK LIQUOR HAVING REMOVAL OF SULPHUR COMPOUNDS FROM FORMED WATER EFFLUENT - The method is for separation of lignin from original black liquor (BL | 12-04-2014 |
| 20150045544 | BIOMASS FRACTIONATION AND EXTRACTION METHODS AND APPARATUS - A biomass fractionation apparatus includes a vessel having a processing chamber, an inlet configured to receive a biomass into the processing chamber, and an outlet configured to discharge processed biomass from the chamber. A bed plate is movably positioned within the processing chamber and includes a plurality of elongated fins extending outwardly therefrom in substantially parallel spaced-apart relationship. A cylindrical rotor is rotatably secured within the processing chamber in adjacent, spaced-apart relationship with the bed plate. The rotor has a plurality of elongated blades extending radially outwardly therefrom in circumferentially spaced-apart relationship. Upon rotation of the rotor, the blades are configured to accelerate a biomass within the processing chamber against the fins of the bed plate and to cause the bed plate to pulsate against the rotor. | 02-12-2015 |
| 20150051385 | Liquid / Liquid Separation of Lignocellulosic Biomass to Produce Sugar Syrups and Lignin Fractions - A process for production of C5 and C6 sugar enriched syrups from lignocellulosic biomass and fermentation products therefrom is described. A lignocellulosic biomass is treated with acetic acid with washing thereof with a C | 02-19-2015 |
| 20150051386 | METHOD FOR THE MODIFICATION OF WOOD - The invention is directed to a process for the continuous acetylation of wood elements. The process particularly combines a batchwise impregnation step, with a continuous reaction step. In order to realize this, a collection step is built-in, so as to allow batches of impregnated wood elements to be fed into a reactor in a continuous manner. Very high acetylation contents can be obtained, at a level that had not been achievable before in a continuous and non-catalyzed acetylation process. | 02-19-2015 |
| 20150094459 | Pretreatment of Lignocellulosic Biomass and Recovery of Substituents using Natural Deep Eutectic Solvents/Compound Mixtures with Low Transition Temperatures - Low transition temperature mixtures (LTTMs) or solvents are provided that can be used in methods and systems to dissolve and bydrolyze certain components from lignin-containing biomass (e.g., lignin) at mild conditions so that further degradation is prevented. The solvents, methods and systems according to the invention have various advantages over prior technology or approaches. For example, LTTMs are cheap solvents, renewable and/or non-toxic food ingredients. LTTMs dissolve lignin selectively from a lignin-containing biomass. A highly efficient (up to 90%) lignin recovery can be achieved. The recovered lignin is of higher quality. The remaining cellulose is also of higher. Much less water is needed, which means a tremendous reduction of the energy requirement in the recovery process, i.e. less energy needed for evaporating large quantities of water. | 04-02-2015 |
| 20150119560 | METHOD FOR PRODUCTION OF LIGNIN - A method for the preparation of lignin, characterized in that an acid is added to an alkaline alcoholic solution of lignin and the precipitated lignin is separated, and, optionally, from the filtrate alcohol is removed in order to get further lignin; as well as a method for the preparation of a concentrated alkaline, alcoholic solution of lignin by membrane filtration; the use of the lignin thus prepared; and the isolation of hydroxy cinnamic acids from the solution, from which the lignin has been separated. | 04-30-2015 |
| 20150141628 | METHODS FOR TREATING LIGNOCELLULOSIC MATERIALS - The present invention relates to methods of processing lignocellulosic material to obtain hemicellulose sugars, cellulose sugars, lignin, cellulose and other high-value products. Also provided are hemicellulose sugars, cellulose sugars, lignin, cellulose, and other high-value products. | 05-21-2015 |
| 20150337087 | REMOVAL OF METALS FROM LIQUID PYROLYSIS OIL - The present disclosure generally relates to removing metals from liquid-phase pyrolysis oil, such as at or near room temperatures. Specifically, some embodiments of the disclosure relate to a method and a system for removing metals from pyrolysis oil using acidic ion-exchange resins. One embodiment relates to a method for removing metals from pyrolysis oil comprising combining pyrolysis oil and an organic solvent to form a pyrolysis oil mixture and removing metal from the pyrolysis oil mixture to produce a reduced metal content pyrolysis oil mixture. In some embodiments, the removing of the metal uses a strongly acid ion-exchange resin. | 11-26-2015 |
| 20160002850 | Biomass Process Optimisation - There is described a method of processing biomass which comprises the steps of: (i) processing biomass material in an aqueous system in the presence of an oxalic acid catalyst to produce a slurry; (ii) subjecting the slurry to an acidified organosolv liquor and optionally de-aerating the resulting mixture before exposing the mixture to ultrasound in a pretreatment step; and (iii) completing the fractionation process using thermal digestion, followed by separation of the constituents into lignin, hemi-cellulose (monosaccharides) and cellulose with the addition of water. | 01-07-2016 |
| 20160002851 | Process Operations for Biomass Fractionation - There is described a method of fractionating a biomass material comprising: (i) blending the biomass material with an acid catalyst to form a slurry; (ii) mixing the slurry with an organosolv reagent optionally under an inert atmosphere to form a pre-treatment mix; (iii) subjecting the pre-treatment mix to sonication; (iv) optionally heating the product of step (iii) in an autoclave under pressure; (v) separating the solid and liquid components of the fractionation mix; (vi) optionally washing the solid; (vii) optionally drying the solid component; (viii) separating the liquid component into organic and aqueous components; and (ix) isolating lignin from the organic component and/or isolating hemi-cellulose from the aqueous component. | 01-07-2016 |
| 20160122379 | Renewable aromatics from lignocellulosic lignin - The present invention provides novel and improved processes for treating a lignocellulosic biomass or technical lignin using ionic liquids to obtain lignin breakdown products and polysaccharide biomass components. Recycling of ionic liquids can be included in the methods of the invention. | 05-05-2016 |
| 20160130202 | Systems and Methods for the Depolymerization of a Biopolymer - Methods for the production and isolation of a monomer from a biopolymer are described. The method includes extracting a biopolymer from a biopolymer source and depolymerizing the biopolymer into a monomer. | 05-12-2016 |
| 20160137680 | SOLVENT AND RECOVERY PROCESS FOR LIGNIN - Methods for obtaining purified lignin and the lignin that can be obtained by the methods are described. Methods include processing pretreated lignocellulosic biomass feedstock to recover the lignin and provide a lignin composition with a very low level of impurities such as metals and ash. In addition, the lignin recovered from the process can have a narrow molecular weight distribution and, depending upon the specific stages utilized in the process, can have a predetermined molecular weight. The process includes one or more separation stages in which a lignin-containing feedstock is mixed with a solvent solution. The mixture fractionates to form a solvent-rich liquid phase and a lignin-rich liquid phase, the lignin being partitioned across the phases according to the molecular weight of the lignin. Furthermore, the metal salts of the pretreated lignocellulosic biomass feedstock also partition across the phases. | 05-19-2016 |
| 20160145398 | METHOD FOR MANUFACTURING LIGNIN DEGRADATION PRODUCT - Provided is a method for producing a lignin degradation product that includes (1) a degradation step of degrading a raw material containing a plant biomass, in a mixed solvent of water and an aliphatic alcohol having from 4 to 10 carbon atoms, which separates into two phases at 0° C. or higher and 50° C. or lower, under the following conditions, and (2) after the degradation step, a liquid-liquid separation step of separating the lignin degradation product-containing organic phase from the solvent that has separated at the temperature for two-phase separation. The method produces a lignin degradation product at a high yield from lignin or a material containing lignin. Condition A: The concentration of the raw material to be in the mixed solvent is 1% by mass or more and 20% by mass or less. Condition B: The reaction temperature is 100° C. or higher and 350° C. or lower. Condition C: The reaction time is 0.1 hours or more and 10 hours or less. | 05-26-2016 |
| 20160177040 | METHOD OF PRODUCING LIGNIN WITH REDUCED AMOUNT OF ODOROUS SUBSTANCES | 06-23-2016 |
| 20160185809 | METHOD FOR LIGNIN RECOVERY - The present invention primarily relates to a method for isolating lignin, preferably unmodified lignin, from a mixture, in particular a pulping slurry, containing lignin, a cellulose solvent, a cellulose precipitant, minerals and optionally (residual) cellulose and/or hemicellulose and/or hydrolysation products thereof, comprising or consisting of the following steps:
| 06-30-2016 |
