Abstract: A method for preparing dispersant using lignin degradation products includes preparation of lignin degradation products: degrading lignin which are used as raw materials using alkali through microwave-assisted activation at the presence of a metal oxide catalyst to obtain the lignin degradation products; and preparation of dispersant: preparing dispersant by molecularly reforming and chemically modifying the lignin degradation products obtained in the step of preparation of lignin degradation products.

Abstract: Described herein are fluids used to inhibit swelling of clay or shale formations, where the fluids include a drilling fluid and a clay stabilizer that include a potassium salt with a plurality of cations and are injectable into a wellbore.

Abstract: Highly sulfated, high basicity polyaluminum chlorosulfate compositions that can be made by mixing dry aluminum hydroxychloride with a solution of aluminum sulfate or by diluting a dry mixture of aluminum hydroxychloride and aluminum sulfate with water.

Abstract: Modified lignin having covalently attached phosphorous containing groups and methods for preparing such compounds are described herein. The modified lignin described herein provides a renewable source of flame retardant material.

Abstract: Modified lignin having covalently attached phosphorous containing groups and methods for preparing such compounds are described herein. The modified lignin described herein provides a renewable source of flame retardant material.

Abstract: The present disclosures provides isolated or purified compounds, each of which bind to a metal atom. Generally, the compounds are small in size (e.g, molecular weight of less than about 1 kDa) and peptidic in nature, inasmuch as the compounds comprise amino acids. In some embodiments, the compound comprises a structure of Formula I: M1-P1-M2-P2 wherein each of P1 and P2 is a peptide comprising at least two amino acids, M1 is a first metal binding moiety comprising a substituted imidazolone ring, M2 is a second metal binding moiety comprising a substituted oxazolone ring, and wherein M1 and M2 bind to a single metal atom. Also provided are related complexes, conjugates, cells which synthesize the compounds of the present disclosures, substantially homogenous cultures thereof, kits and compositions, and methods of making or using the materials of the present disclosures.

Abstract: Technology for separating lignin from alkaline solutions which arise in production of cellulose is presented. Isolated lignin can be applied, for instance, for production of carbon fibre, adhesives and binding materials, antioxidants and organic chemicals. Starting materials are non-woody plant materials, from which lignin is dissolved by sulphur free alkaline solutions at temperatures below 130° C. Lignin is precipitated by acid, and purified by hydrolyzing hemicellulose by acid or by enzymatic reactions or a combination of these. Lignin separated has a closely similar structure as lignin in plant material, and its content of functional atom groups can be controlled by changes in processing conditions.

Abstract: Modified lignin having covalently attached phosphorous containing groups and methods for preparing such compounds are described herein. The modified lignin described herein provides a renewable source of flame retardant material.

Abstract: The present invention is directed generally to a method of production of biobased chemicals, biofuels, and lignin residues from lignin sources, including waste lignin. This method may allow for selectively producing biobased chemicals, biofuels, and lignin residues from lignin sources using certain processing methods. The methods for production of these biobased chemicals, biofuels, and lignin residues may be provided by chemical-induced processing, catalytic oxidative lignin depolymerisation processing, and catalytic hydroprocessing. Further, the catalytic hydroprocessing from processes including catalytic reduction processing, catalytic hydrodeoxygenation processing, and/or catalytic/dehydrogenation processing may also be used. The method described herein also provides a means in which waste from the process(es) may be reduced and/or recycled.

Abstract: The invention relates to phosphate compounds obtained according to a method comprising reaction of a source of insoluble phosphate with an organic source, principally of vegetable origin, optionally in the presence of a mineral acid or an organic acid, said organic source having at least 10% of complexing functional groups. The compounds of the invention are useful for preparing fertilizer.

Abstract: Embodiments described herein include capped nanoparticles having a nanoparticle core and at least one capping agent including a biochemical constituent of wood or a woody plant or a derivative thereof functionally associated to the nanoparticle core. Some embodiments provide for wood products and wood treatment compositions including such capped nanoparticles, and methods for preparing and using such capped nanoparticles to produce treated wood or treated wood products.

Abstract: The invention relates to functionalized lignin, rubber compositions which contain functionalized lignin and to products which have at least one component comprised of such rubber composition.

Abstract: 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 are suited, for example, for utilization as absorbers for water and aqueous liquids, as coagulants and thickeners, as water softeners and as dispersing agents.

Abstract: 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. To achieve good separation capacity, especially by filtration, it is proposed that the polymers be precipitated by reducing the pH at a relatively low temperature, typically between 15 and 60° C., and the dispersion be subsequently reheated until it passes into filterable form, typically between 50 and 95° C. The product separated in this way for example by filtration can be washed and can be dried at a high temperature, especially up to 110° C., without becoming black.

Abstract: A process for depolymerizing and/or chemically modifying lignin or lignin-like compounds in which a solution of copper and peroxide acts on lignin and/or lignin-like substance at a temperature of less than 100° C., characterized in that the solution is an aqueous solution containing copper or a copper complex, a coordination compound and peroxide and wherein the concentration of the copper or copper complex is between 0.001% and 5%, and wherein the concentration of the coordination compound is lower than 20% and wherein the concentration of peroxide is between 0.01% and 20%.

Abstract: A method of making surfactants from lignin is disclosed by reducing lignin in the presence of a metal oxide or iron based catalyst in an organic hydrogen donor solvent to produce lignin phenol and subjecting the lignin phenol to one or a combination of several reactions such as alkoxylation, alkylation, sulfonation, sulfation, alkoxysulfation, and sulfomethylation. The lignin surfactants so produced can be employed in a surfactant system to recover oil from underground formations.

Abstract: A method of making surfactants from lignin is disclosed by reducing lignin in the presence of a metal oxide or iron based catalyst in an organic hydrogen donor solvent to produce lignin phenol and subjecting the lignin phenol to one or a combination of several reactions such as alkoxylation, alkylation, sulfonation, sulfation, alkoxysulfation, and sulfomethylation. The lignin surfactants so produced can be employed in a surfactant system to recover oil from underground formations.

Abstract: Two amino acid sequences are joined together using an electron acceptor moiety and a linking moiety, such as a chelating agent. In particular, an amino acid sequence specific for binding to a material interest is linked to an enzyme which acts on an indicator, such as a colorimetric, phosphometric, fluorometric or chemiluminescent substrate. The linking composition is useful in immunoassays.

Abstract: A method for delignifying wood pulp and fiber is disclosed. The method comprises the steps of obtaining a wood pulp and exposing the wood pulp to a polyoxometalate of the formula ?V.sub.1 Mo.sub.m W.sub.n Nb.sub.o Ta.sub.p (TM ).sub.q X.sub.r O.sub.s !.sup.x- where l is 0-18, m is 0-40, n is 0-40, o is 0-10, p is 0-10, q is 0-9, r is 0-6, TM is a d-electron-containing transition metal ion, and X is a heteroatom, which is a p or d block element, where l+m+n+o+p.gtoreq.4, l+m+q>0 and s is sufficiently large that x>0. The exposure is under conditions wherein the polyoxometalate is reduced. In a preferable form of the invention, the method additionally comprises the step of reoxidizing the polyoxometalate.

Abstract: A lignin composition having a content of aluminum or iron or both at 0.05 to 5 wt. % (based on the solids of the lignin solution) and a content of extracts with chlorotrifluoroethylene dimer at 0.01 to 0.4 wt. % (based on solids in lignin solution). The lignin compositions possess high surface tension and are suitable as dispersing agents for cement.

Abstract: A method for delignifying wood pulp and fiber is disclosed. The method comprises the steps of obtaining a wood pulp and exposing the wood pulp to a polyoxometalate of the formula ?V.sub.l Mo.sub.m W.sub.n Nb.sub.o Ta.sub.p (TM).sub.q X.sub.r O.sub.s !.sup.x- where l is 0-18, m is 0-40, n is 0-40, o is 0-10, p is 0-10, q is 0-9, r is 0-6, TM is a d-electron-containing transition metal ion, and X is a heteroatom, which is a p or d block element, where l+m+n+o+p.gtoreq.4, l+m+q>0 and s is sufficiently large that x>0. The exposure is under conditions wherein the polyoxometalate is reduced. In a preferable form of the invention, the method additionally comprises the step of reoxidizing the polyoxometalate.

Abstract: A method for delignifying wood pulp and fiber is disclosed. The method comprises the steps of obtaining a wood pulp and exposing the wood pulp to a polyoxometalate of the formula ?V.sub.l Mo.sub.m W.sub.n Nb.sub.o Ta.sub.p (TM).sub.q X.sub.r O.sub.s !.sup.x- where l is 0-18, m is 0-40, n is 0-40, o is 0-10, p is 0-10, q is 0-9, r is 0-6, TM is a d-electron-containing transition metal ion, and X is a heteroatom, which is a p or d block element, where l+m+n+o+p.gtoreq.4, l+m+q>0 and s is sufficiently large that x>0. The exposure is under conditions wherein the polyoxometalate is reduced. In a preferable form of the invention, the method additionally comprises the step of reoxidizing the polyoxometalate.

Abstract: Two amino acid sequences are joined together using an electron acceptor moiety and a linking moiety, such as a chelating agent. In particular, an amino acid sequence specific for binding to a material interest is linked to an enzyme which acts on an indicator, such as a colorimetric, phosphometric, fluorometric or chemiluminescent substrate. The linking composition is useful in immunoassays.

Abstract: This invention concerns tin-, cerium-, and base-treated tin-bearing lignosulfonates, a process for their preparation from calcium lignosulfonate, and a process for the use thereof as drilling fluid additives.

Abstract: A composite molecular active substance group for use in restitutive chemotherapy against viral infections, which is produced by the process comprising: (a) preparing lignin units by carrying out an extraction in an aqueous media under weakly acidic or alkaline conditions of wood or wood-like materials and/or plant-cell cultures and separating-off the resultant insoluble solids; (b) preparing lignoid units by carrying out an aqueous alkaline extraction at a pH of 7 to 14 of starting materials selected from the group consisting of wood-incarbonization products and bioconverted wood-like materials and separating-off the resultant alkali-insoluble solids; and (c) preparing a water-soluble mixed polymer by reacting the lignin units from step (a) with the lignoid units from step (b), under aqueous alkaline isolating by ultrafiltration a low molecular weight fraction having a molecular weight of no more than 3000 daltons of the mixed polymer, taking a cut between 15 to 40 kilodaltons and discarding the resultant res

Abstract: A method for delignifying wood pulp and fiber is disclosed. The method comprises the steps of obtaining a wood pulp and exposing the wood pulp to a polyoxometalate of the formula [V.sub.l Mo.sub.m W.sub.n Nb.sub.o Ta.sub.p (TM).sub.q X.sub.r O.sub.s ].sup.x- where l is 0-18, m is . 0-40, n is 0-40, o is 0-10, p is 0-10, q is 0-9, r is 0-6, TM is a d-electron-containing transition metal ion, and X is a heteroatom, which is a p or d block element, where l+m+n+o+p.gtoreq.4, l+m+q>0 and s is sufficiently large that x>0. The exposure is under conditions wherein the polyoxometalate is reduced. In a preferable form of the invention, the method additionally comprises the step of reoxidizing the polyoxometalate.

Abstract: A method for oxidative degradation of lignin and polysaccharide fragments dissolved during polyoxometalate delignification or bleaching of wood pulp, wood fiber or pulp obtained from a non-woody plant. The method comprises the steps of obtaining a spent polyoxometalate bleaching solution containing a polyoxometalate of the formula [V.sub.l Mo.sub.m W.sub.n Nb.sub.o Ta.sub.p (TM).sub.q X.sub.r O.sub.s ].sup.x- where 1 is 0-18, m is 0-40, n is 0-40, o is 0-10, p is 0-10, q is 0-9, r is 0-6, TM is a d-electron-containing transition metal ion, and X is a heteroatom which is p or d block element, provided that l+m+n+o+p.gtoreq.4, l+m+q>0 and s is sufficiently large that x>0, and heating the solution in the presence of an oxidant under conditions wherein the dissolved organic compounds are oxidatively degraded to volatile organic compounds and water.

Abstract: 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 mixture for a time sufficient to form the oxidized lignosulfonate composition.

Abstract: This invention concerns tin-, cerium-, and base-treated tin-bearing lignosulfonates, a process for their preparation from calcium lignosulfonate, and a process for the use thereof as drilling fluid additives.

Abstract: A method for delignifying wood pulp is disclosed. The method comprises the steps of obtaining a wood pulp and exposing the wood pulp to a polyoxometalate of the formula [V.sub.n Mo.sub.m W.sub.l Nb.sub.o Ta.sub.p (TM).sub.q (MG).sub.r O.sub.s ].sup.x- where n is 1-18, m is 0-40, l is 0-40, o is 0-10, p is 0-10, q.ltoreq.6, r.ltoreq.6, TM is a d-electron-containing transition metal ion, and MG is a main group ion, provided that n+m+o+l+p.gtoreq.4 and s is sufficiently large that x>o. The exposure is under conditions wherein the polyoxometalate is reduced. In a preferable form of the invention, the method additionally comprises the step of reoxidizing the polyoxometalate.

Abstract: A method is provided for cleansing a protein from multivalent metal ions bound thereto, these ions being released from the protein by exchanging the ions with monovalent metal ions, whereafter the multivalent metal ions are removed. The release and removal of these ions is effected, in particular, by diafiltration or gel filtration processes.

Abstract: Process for preparing lignocellulosic bodies by bringing lignocellulosic parts into contact with a composition comprising a polyisocyanate, fumed silica and a non-ionic liquid gellant and by pressing this combinations of parts and composition.The adhesion of the parts is excellent and the binder composition can be easily sprayed.

Abstract: The present invention relates to drilling fluid additives, more particularly to superior drilling fluid thinners or polyfunctional drilling fluid conditioners, and methods of their preparation. The thinners comprise chelates and complexes prepared by reaction of sulfonitrohumic acid and sulfolignin with compounds of elements of Groups IVB and VIII of the periodic table, and especially titanium zirconium iron sulfolignin sulfonitrohumates, as well as mixture formed in the reaction. These chelates are stable, and are readily binded with clay and have a good heat resistance. The thinners of the present invention can remarkably reduce viscosity, yield point, gel strength and water loss of well-drilling fluids, and have a high salts and calcium resistivity, and can be widely used in extracting and exploiting petroleum, natural gas, geothermal fluids and underground water.

Abstract: A product comprising, a water insoluble lignin material, at neutral or acid pH, having chemically bound a sulfur(S) content from at least 9.5%, and a phosphorus(P) content from 3.3 to 10%. At least 50% by weight of the S and P content is thiophosphate. In said lignin material the mole ratio S/P is at least 1.8 that of S to aromatic unit (S/Ar) is greater than 0.7, and the P/Ar ratio is from 0.3 to 0.8. The lignin material has chelating capacities for gold at pH 2 of at least 2.2 millimoles per gram of lignin material. On IR analysis the lignin material has infra-red absorption bands evidencing P.dbd.S, P--S or Ar--S, P--O--Ar, aromatic, CH.sub.2 --S, and P--O--C groups in the vicinity of 730-750, 640-670, 1080-1110, 1490-1510, 820-845, and 965-995 cm.sup.-1, respectively. In the absence of interferring IR bands, the sum of the intensity of the bands in the vicinity of 640-670 cm.sup.-1 and 730-750 cm.sup.-1 over the intensity of the band in the vicinity of 1080-1110 cm.sup.-1 is greater than 1.

Abstract: Organophilic polyphenolic materials which are effective fluid loss control additives for oil base well-working fluids are prepared from a polyphenolic material and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegetable oils, most preferably commercial lecithin. Preferred polyphenolic materials comprise one or more of: humic acid; lignosulfonic acid; lignins; phenolic condensates; tannins, the oxidized, sulfonated, or sulfomethylated derivatives of these polyphenolic materials; and the water soluble or colloidally dispersible salts of these polyphenolic materials or these derivatives thereof.

Abstract: A method is disclosed to degrade lignin comprising reacting the lignin in a liquid medium under aerobic conditions with an amount of persulfate anion and a transition metal cation effective to catalyze the oxidative degradation of the lignin.

Abstract: An improved process for making drilling fluid additives. The drilling fluid additives generally comprise titanium and/or zirconium lignosulfonates. The improved process of this invention can be performed without any delays caused by plugging during filtration. Filtration plugging problems are eliminated by adding only stoichiometric amounts of zirconium and/or titanium lignosulfonate to the lignosulfonate mixture prior to filtration.

Abstract: Organophilic polyphenolic materials which are effective fluid loss control additives for oil base well-working fluids are prepared from a polyphenolic material and one or more phosphatides. Preferred phosphatides are phosphoglycerides obtained from vegetable oils, most preferably commercial lecithin. Preferred polyphenolic materials comprise one or more of: humic acid; lignosulfonic acid; lignins; phenolic condensates; tannins; the oxidized, sulfonated, or sulfomethylated derivatives of these polyphenolic materials; and the water soluble or colloidally dispersible salts of these polyphenolic materials or these derivatives thereof.

Abstract: Drilling fluid additives are prepared by complexing humic acids and/or lignins, with three compounds of zirconium, nickel and iron. The metal composition of the additives is 1.3 to 2.5% of zirconium, 0.8 to 1.5% of nickel and 0.8 to 1.5% of iron, and is totally 3.0 to 5.5%. Thus, the drilling fluid additives, containing no chromium, can be used in wide temperature range for the drilling of oil, geothermal or gas wells with less gelation even by various contamination and cause no serious environmental pollution.

Abstract: Biochemically active materials having anabolic bioactivity for favorably influencing the intracellular and systemic metabolism of higher organisms are disclosed. The materials consist of water-soluble acid carbonization products of lignoid natural materials in the form of decationized alkali salts and have their catabolic activity at least in part inhibited by reaction with trace metal ions. The active material carbonization products are produced by treating lignoid natural material with an aqueous alkali hydroxide solution. The resulting solution is adjusted to a weakly acid pH and treated with a trace metal salt solution. The reaction mixture thus obtained was dried, optionally after addition of a suitable carrier product. Also described are growth-promoting agents, particularly suited for animal feed supplements, as well as therapeutic agents which contain this active material useful in treating metabolism disturbances of higher organisms or for use with disturbances of the metabolism.

Abstract: A method is provided for cleansing a protein from multivalent metal ions bound thereto, these ions being released from the protein by exchanging the ions with monovalent metal ions, whereafter the multivalent metal ions are removed. The release and removal of these ions is effected, in particular, by diafiltration or gel filtration processes.