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| Number | Title | Issue Date |
| 8053566 | Methods for isolating and harvesting lignin and isolated lignin preparations produced using the methods 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 isolati... | 11/08/2011 |
| 7048960 | High lignan flaxseed product and product by process The present invention includes a high lignan concentrate (3% to 5% or greater) flax seed product, and product by process, which can be produced by 1) supplying a uniformly colored quantity of flax seeds with less than 5 percent visually darker seeds; 2) milling the ... | 05/23/2006 |
| 6806356 | Process for recovering secoisolariciresinol diglycoside from de-fatted flaxseed A process for extracting secoisolariciresinol diglycoside (SDG) from de-fatted flaxseed is described. The process comprises contacting defatted flaxseed with an extraction solvent of acetone and water, extracting the de-fatted flaxseed with the extraction solvent to... | 10/19/2004 |
| 6593460 | Method for grafting lignin, polymerizates produced according to the method and the utilization thereof The invention relates to biologically degradable lignin graft polymers comprised of lignin and ethylenically unsaturated monomers which are formed by an enzymatically catalyzed polymerization method in the presence of organic peroxides. The polymerizates ... | 07/15/2003 |
| 6335373 | Process to produce stabilized carnosic acid in high concentration A novel process for the production of the natural antioxidant, carnosic acid, by extracting it from rosemary leaves with an aqueous solution of a lower alkyl alcohol in the presence of a water soluble acid is described. The extraction of the carnosic acid... | 01/01/2002 |
| 6264853 | Complex containing lignan, phenolic and aliphatic substances from flax and process for preparing A substanially pure chemically bound complex is derived from flax containing secoisolariciresinol diglucoside, cinnamic acid glycosides and hydroxy methyl glutaric acid. The complex is obtained by preparing an aqueous aliphatic alcoholic extract from flax... | 07/24/2001 |
| 6239198 | Method for preparing alkaline solutions containing aromatic polymers The invention proposes a process which enables separation of aromatic polymers which can be precipitated by acidification, as can be found especially in waste water from cellulose production, from an alkaline solution in a reliable manner and in pure form... | 05/29/2001 |
| 6072015 | Lignin based paint A method is provided for producing a painted article comprising: (a) preparing a lignin solution comprising lignin and a dye or pigment; (b) mixing the lignin solution with a phenol oxidizing enzyme; (c) incubating the mixture from said step (b) under con... | 06/06/2000 |
| 6054562 | Modified lignins Lignin and polyether glycol produces a product which has a distinct melt point and melt viscosity. Polyether glycol has a plasticizing effect wherein the lignin can be thought of as the hard resin. When 20 parts of polyether glycol are processed with 80 p... | 04/25/2000 |
| 6013774 | Biodegradable plastics and composites from wood In this disclosure, there are provided materials which completely degrade in the environment far more rapidly than pure synthetic plastics but which possesses the desirable properties of a thermoplastic: strength, impact resistance, stability to aqueous a... | 01/11/2000 |
| 5852069 | Biodegradable plastics and composites from wood In this disclosure, there are provided materials which completely degrade in the environment far more rapidly than pure synthetic plastics but which possesses the desirable properties of a thermoplastic: strength, impact resistance, stability to aqueous a... | 12/22/1998 |
| 5756098 | Methods for the extraction of phytochemicals from fibrous plants in the absence of solvent Methods and apparatus are provided for the recovery of organic compounds from fibrous plant materials. Organic compounds which can be recovered from the fibrous plant materials include plant metabolites, such as arabinogalactan and phenols, which can be i... | 05/26/1998 |
| 5741875 | Biodegradable plastics and composites from wood In this disclosure, there are provided materials which completely degrade in the environment far more rapidly than pure synthetic plastics but which possesses the desirable properties of a thermoplastic: strength, impact resistance, stability to aqueous a... | 04/21/1998 |
| 5705618 | Process for extracting lignans from flaxseed A process is described for extracting lignans from flaxseed which comprises contacting a substantially oil-free flaxseed meal with an aliphatic alcohol solvent, e.g. a mixture of methanol or ethanol with water, to extract lignans into the alcohol solvent ... | 01/06/1998 |
| 5484896 | Esterified high lignin content cellulosic fibers Individualized, esterified high lignin content cellulosic fibers containing intrafiber C2 -C9 polycarboxylic acid ester perform unexpectedly better in absorbent applications than lower lignin content esterified fibers from the same f... | 01/16/1996 |
| 5446133 | Nitric acid oxidized lignosulfonates A process for producing an oxidized lignosulfonate composition comprising admixing a lignosulfonate and nitric acid such that the amount of acid comprises from about 35% to about 100% by weight of dry solids of the lignosulfonate, and reacting said mixtur... | 08/29/1995 |
| 5288857 | Lignin preparation and method for its manufacture The invention relates to a lignin preparation prepared from black liquor derived from an alkali delignification process, such as the sulphate process, soda process or polysulphide process. The lignin preparation comprises mainly lignin and at least the ma... | 02/22/1994 |
| 5223258 | Antiviral disinfecting composition and method of inactivating the AIDS virus in vitro An antiviral medicinal composition having spent liquor from kraft pulping and/or processed products thereof (kraft lignin, sulfomethylated and/or sulfopropylated kraft lignin) as major constituents, are effective agents in therapeutic and/or preventive me... | 06/29/1993 |
| 5196460 | Rubber compositions containing high purity lignin derivatives A tackifier composition for use in rubber compounds is disclosed. The tackifier comprises a pure lignin with a water solubility of up to 1% by weight and a carbohydrate level of less than 50% by weight. In another embodiment of the invention, the pure lig... | 03/23/1993 |
| 5177169 | Method for recovering and using lignin in adhesive resins Lignin, or a lignin derived material, which has been significantly demethylated (e.g., the demethylated lignin found in the raffinate produced as a by-product of dimethyl sulfide production which can be carried out using the spent liquor from wood pulping... | 01/05/1993 |
| 5102991 | Alkylene oxide esters of lignin sulfonic acid Lignin sulfonates are converted into sulfonic acid esters by blocking free phenolic hydroxyl groups on the lignin sulfonates from reaction with a suitable protective group, subjecting the blocked lignin sulfonate in aqueous solution to ion exchange to pro... | 04/07/1992 |
| 5026808 | Method for recovering and using lignin in adhesive resins by extracting demethylated lignin Lignin, or a lignin derived material, which has been significantly demethylated (e.g., the demethylated lignin found in the raffinate produced as a by-product of dimethyl sulfide production which can be carried out using the spent liquor from wood pulping... | 06/25/1991 |
| 5021531 | Method for recovering and using lignin in adhesive resins by extracting demethylated lignin Lignin, or a lignin derived material, which has been significantly demethylated (e.g., the demethylated lignin found in the raffinate produced as a by-product of dimethyl sulfide production which can be carried out using the spent liquor from wood pulping... | 06/04/1991 |
| 5010156 | Organosolv lignin-modified phenolic resins and method for their preparation A lignin-modified phenol-formaldehyde resin for use as an adhesive for particulate wood products is disclosed which is prepared by reacting phenol and formaldehyde with an aqueous alkaline solution of an organosolv lignin. The organosolv lignin used in th... | 04/23/1991 |
| 4966650 | Method for fractionation of lignins from steam exploded lignocellulosics to provide fractions with different properties The chemical components of lignocellulosic material which have been dissociated by a steam explosion process can be extracted from the mixture of components using a solvent extraction process. The solvents are water, alcohol and a mild caustic in that ord... | 10/30/1990 |
| 4908098 | Method for extracting the chemical components from dissociated lignocellulosic material The chemical components of lignocellulosic material that have been dissociated by a stream explosion process can be extracted from the mixture of components using a solvent extraction process. The dissociated lignocellulosic material is put in a column an... | 03/13/1990 |
| 4826566 | Rapid disolution of lignin and other non-carbohydrates from ligno-cellulosic materials impregnated with a reaction product of triethyleneglycol and an organic acid A method of rapidly and efficiently treating ligno-cellulosic material for removal of lignin and other non-carbohydrates as well as non-cellulosic carbohydrates from cellulosic matter. Such material is first impregnated with a liquor which is a reaction p... | 05/02/1989 |
| 4764596 | Recovery of lignin Lignin is precipitated in high yields and at high rates from a black liquor produced by pulping wood at high temperatures and pressures with an aqueous lower aliphatic alcohol solvent. The lignin is precipitated by diluting the black liquor with water and... | 08/16/1988 |
| 4728727 | Modified lignosulfonate drilling fluid dispersants and process for the preparation thereof The present invention relates to modified lignosulfonate materials and the process for their preparation. These modified lignosulfonates result from the sulfonation of ultrafiltered lignosulfonates by reaction with sulfite-bisulfite salts. The removal of ... | 03/01/1988 |
| 4668243 | Novel fuel A process for generating energy in a furnace or combustion engine which comprises burning therein the novel alcohol-soluble portion of the product obtained as a result of the mild reaction of a lignin-containing material, such as peat, with aqueous nitric... | 05/26/1987 |
| 4493797 | Apparatus and method involving supercritical fluid extraction An autoclave extraction apparatus using supercritical fluid is used for supercritical fluid extraction of one or several compounds. The supercritical fluid containing the compound(s) may then be processed in a pressurized bed reactor under supercritical c... | 01/15/1985 |
| 4459228 | Method for precipitation of sulphonated lignin from sulfide wastes The invention relates to a method for precipitating lignin sulphonates from sulfide wastes, in that a precipitation complex develops by the addition of polycations.... | 07/10/1984 |
| 4447339 | Oil well drilling clay conditioners and method of their preparation Drilling fluid additives are prepared by oxidation of sulfonated lignin-containing materials with manganese dioxide under highly acidic conditions to make manganese lignosulfonates. Additional improvements in the rheological properties of the additives ma... | 05/08/1984 |
| 4265809 | Method of making epoxide-lignin resins A process for making lignin-epoxide resins from lignin separated from the waste cooking liquor from a paper pulping process comprising the steps of reacting the separated lignin with a chemical system to produce unsaturated end groups on the lignin molecu... | 05/05/1981 |
| 4259147 | Pulping process A versatile process and apparatus is presented for producing, in high yields, many different grades of pulp from a single wood specie or for pulping any specie or type of woody material, and for storage and recycling of the by-product liquid and gaseous m... | 03/31/1981 |
| 4111928 | Method of separating lignin and making epoxide-lignin A process for the extraction or separation of lignin from waste black cooking liquor resulting from the kraft and sulfite paper pulping process. After the lignin is separated, it is reacted with a chemical system to produce unsaturated end groups on the l... | 09/05/1978 |
| 4107111 | Polymer made of lignin, and method for making it This invention relates to a three-dimensional, aromatic, sulfur-containing polymer based on lignin. The polymer is characterized in that it is amorphous, practically insoluble in water and conventional organic solvents; it contains thioether bonds and pos... | 08/15/1978 |
| 4100155 | Method of condensing and/or polymerizing sulfonated lignin containing materials A method for polymerizing sulfonated lignin containing materials by adjusting the pH of the materials to a pH below 7, adjusting the moisture content of the materials to a value sufficient to allow the conversion to proceed, but less than 15 percent, and ... | 07/11/1978 |
| 3970712 | Hydrolysis of oat husks A process for the hydrolysis of oat husks is carried out with alkali metal hydroxide or alkali metal chlorite in a first stage and with mineral acid in a second stage to provide D-(+)-xylose. The xylose can be recovered as such, or converted in situ to xy... | 07/20/1976 |
| 3966698 | Recovery of tall oil soaps A method for increasing the yield of tall oil soaps from Kraft black liquor in the manufacture of paper pulp by treating the Kraft black liquor with a sodium lignosulfonate solution containing sodium hydroxide. In addition this solution may also contain a... | 06/29/1976 |
