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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...
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6291558 |
Composition board binding material
This invention features a graft copolymer of lignosulfonates reacted with an unsaturated carbonyl compound and an aldehyde, in two separate reaction steps. The resin can be used as a substitute for...
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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....
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5773590 |
Methods of separating lignin solids and black liquor from tall oil fatty acids
The separation of black liquor, containing lignin, from tall oil is enhanced by the addition of a separation aid. The separation aid is an alkylphenol-formaldehyde resin alkoxylate, a poly...
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5608040 |
Process for the production of lignin-containing polymers
Polymers containing lignin and organic compounds are produced by polymerizing the lignin with organic compounds containing at least 3 carbon atoms as well as oxygen, nitrogen and/or...
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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...
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5188665 |
Lignin amine salt-based binders for water-based black ink formulations
A method of producing a lignin amine salt resin composition for black aqueous printing ink formulation having an improved storage stability wherein from 10 to 60% of the lignin amine salt resin is...
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5077394 |
Porphyrins and uses thereof
Disclosed are tetraphenyl porphyrins which are beta-substituted by fluoro or chloro and/or bear electronegative substituents on the phenyl including one or two water solubilizing substituents. The...
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4988799 |
Lignosulfonate based pharmacologic agent with anti-coagulant and anti-thrombotic activity
A lignosulfonate useful pharmacologically as an anti-thrombotic that inhibits deep venous thrombophlebitis without effecting blood coagulation, and which causes no apparent increased bleeding or...
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4952329 |
Separation of polymetallic sulphides by froth flotation
A new depressant composition is provided for the enhanced separation into separate value metal concentrates of copper, nickel, zinc, lead present in polymetallic and massive sulphide ores. The...
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4892941 |
Porphyrins
Disclosed are tetraphenyl porphyrins which are beta-substituted by fluoro or chloro and/or bear electronegative substituents on the phenyl including one or two water solubilizing substituents. The...
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4857638 |
Lignin having nitrogen and sulfur and process therefor employing thiourea
A product comprising lignin material having a N-content of at least 1.86% and a sulfur content of at least 3.1%, an IR in the vicinity of 1550 to 1670 cm -1 having a peak width of at least 60 cm...
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4846888 |
Oil well drilling cement dispersant
An additive for oil well drilling cement is provided by an azo lignosulfonate formed from the coupling of a diazonium salt made from sulfanilic acid or para-aminobenzoic acid and a lignosulfonate...
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4769434 |
Lignin derivative polymers
A polymer material of the product of reaction of a grass plant lignin derivative comprising lignin polymer fragments recovered from black liquor obtained in the pulping of grass plant material and...
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4748235 |
Method of producing improved amine salts of lignosulfonates
A method of producing an amine-containing salt of a sulfonated lignin compound which may be effectively spray-dried for use in dry form comprising the steps of methylolating a lignin at an alkaline...
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4743268 |
Dispersant composition for azo dyestuffs contaminated with soluble copper impurities
An improved composition for use as a dispersant in azo dye systems contaminated with soluble copper impurities comprising an amine lignosulfonate salt and ethylenediaminetetraacetic acid....
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4740591 |
Lignin by-products of paper-making process
A method of producing a lignin by-product of the black liquor residue of a kraft pulping process having improved water-solubility in amine salt form wherein the lignin precipitate of the black...
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4732572 |
Amine salts of sulfomethylated lignin
Disclosed is a method for the production of a sulfomethylated lignin amine salt from the lignin by-product of the black liquor residue of a kraft pulping process and the use of lignin amine salts...
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4715864 |
Lignosulfonate salts for use as dyestuff additives
An improved lignosulfonate salt composition particularly suited for use as a dyestuff dispersant in azo dyestuff-containing dye systems wherein a sulfonated lignin salt is modified by ion-exchange...
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4659739 |
Agricultural and horticultural guanidine-type fungicide and process for production thereof
An agricultural and horticultural fungicide of low phytotoxicity comprising as an active ingredient an addition salt between a fungicidal guanidine compound and an acid having an oleophilic group...
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4562236 |
Reaction product of lignosulfonate and unsaturated fatty amine
A reaction product and process for making the same of a lignosulfonate with an unsaturated fatty amine of 18 to 20 carbon atoms and an aldehyde. The process includes forming an aqueous solution of...
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4546173 |
Selective crosslinking of low molecular weight sulfonated lignins and lignosulfate products produced thereby
A process for preparing sulfonated lignins suitable for use as dispersants and additives in dye compositions wherein sulfonated lignins are post-sulfonation crosslinked with a crosslinking agent of...
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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.
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4336189 |
Process for recovering lignosulfonates from spent sulfite liquor
A process for recovering lignosulfonates from spent sulfite liquor resulting from the cooking of cellulose-containing material comprising extracting the spent liquor with a liquid amine dissolved...
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4313857 |
Broken-down organic lignin-cellulose silicate polymers
Small particles of cellulose-containing plants are mixed with an alkali metal hydroxide and an oxidated silicon compound, then heated to 150° C. to 220° C. while agitating, thereby producing a...
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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...
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4250088 |
Demethylated lignin and process
Lignin compounds are demethylated without degradation of the lignin polymer backbone to provide a highly reactive lignin and methyl chloride as products. The reaction is applicable to Kraft lignin...
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4017419 |
Cationic bituminous emulsions
A cationic bitumen emulsion stabilized with a polyamine-lignin reaction product is described.
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4007004 |
Dyestuff filler derived from kraft black liquor
A dyestuff filler material with humectant properties derived from kraft black liquor is disclosed. The process for obtaining the dyestuff filler material involves the acidification of kraft black...
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3915911 |
Process for preparing a flameproofing composition
A flameproofing composition is prepared by co-melting a lignin compound with a urea compound.
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3865803 |
Modified lignin surfactants
The improved lignin surfactant of this invention is a lignin modified by reaction with from about 1 to 20 moles, preferably from 2 to 10 moles, per 1000 grams of lignin, of an agent of the type...
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3862901 |
METHOD OF RECOVERING ORGANIC MATERIAL FROM AQUEOUS SOLUTIONS THEREOF
The invention comprises a method of isolating at least some of the high molecular weight organic compounds containing basic groups such as proteins, polypeptides, bacteria, virus and enzymes, from...
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3859337 |
ETHYLENEDIAMINETETRAACETIC ACID ANHYDRIDE DERIVATIVES
Novel derivatives of ethylenediaminetetraacetic acid anhydride are provided and such derivatives are obtained by directly reacting the anhydride with compounds having a hydrogen atom replaceable by...
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3718639 |
PROCESS FOR PRODUCING CATIONIC LIGNIN AMINES
The process of this invention involves reacting a lignin with the reaction product of epichlorohydrin and a tertiary amine, preferably in salt form. The tertiary amine is preferably converted to...
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3697497 |
HEXAMETHYLENE TETRAMINE DERIVATIVES OF ALKALI LIGNINS
Hexamethylene tetramine derivatives of alkali lignins are formed by reacting, at a temperature between 70° C. and 180° C., 0.17 to 2.0 moles of a hexamethylene tetramine forming solution with 1...
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3671428 |
LIGNIN DERIVATIVE
Lignin derivatives, particularly for use in oil base drilling muds, are obtained by reacting an oxidized lignin with an amine to form a salt and heating the resulting salt to elevated temperatures...
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3622510 |
RECOVERY OF PROTEINACEOUS MATERIAL FROM WASTE EFFLUENTS
The recovery of proteinaceous material from aqueous plant effluents by treating the effluent with a low molecular weight lignosulfonate.
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3538071 |
NITROGEN AND LIGNIN CONTAINING PRODUCTS AND PROCESS FOR OBTAINING THEM
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3503762 |
INK COMPRISING LIGNIN-BASED COLORANTS
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3492228 |
DRILLING FLUID COMPOSITION CONTAINING A LIGNOSULFONAMIDE
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3490991 |
DIGESTION OF LIGNOCELLULOSIC MATERIAL WITH AN ORGANOMERCAPTAN AND AN INORGANIC DIGESTING AID
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3483184 |
NITROGENATED NATURAL PRODUCTS AND PROCESSES UNDER ALKALINE CONDITIONS
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3471309 |
THERMAL COPYING PROCESS WITH LIGNIN REACTION IN COPY SHEET
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3470148 |
REACTION PRODUCTS OF LIGNIN AND BARK EXTRACTS AND PROCESS FOR SAME
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3455895 |
TRIAZINE DERIVATIVES OF SPENT SULFITE LIQUOR
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3438959 |
LIGNOSULFONATE DERIVATIVE AND A PROCESS FOR ITS PREPARATION
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3438960 |
LIGNOSULFONAMIDE AND A PROCESS FOR ITS PREPARATION
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3425953 |
DISPERSION PROCESS AND COMPOSITION
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3423395 |
PROCESS FOR THE RECOVERY OF MACROMOLECULAR SILVICHEMICAL POLYMERS FROM AQUEOUS SOLUTIONS
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3412018 |
Water purifying process
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