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| Number | Title | Issue Date |
| 7265169 | Adhesive compositions and methods of using and making the same Adhesive compositions produced from abundant and renewable resources such as lignocellulosic materials, particularly decayed lignocellulosic materials or demethylated lignin. Other components present in particular examples of the adhesive compositions include relati... | 09/04/2007 |
| 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 |
| 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 a majority of pure urea formaldehyde resin in the manufac... | 09/18/2001 |
| 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 |
| 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 (proplyene oxide) ethoxylate, an alkanol amine condensate, or comb... | 06/30/1998 |
| 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 multiple-linkage functions in the presence of radically oxidizing enzymes... | 03/04/1997 |
| 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 |
| 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 replaced by acrylic resin, rosin resin, or a combination t... | 02/23/1993 |
| 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 new porphorins are particularly suitable as catalysts in a... | 12/31/1991 |
| 5008382 | Cationic aqueous bituminous emulsion-aggregate slurries preparation Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the r... | 04/16/1991 |
| 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 side effects. The lignosulfonate is isolated from softwood s... | 01/29/1991 |
| 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 depressant is added in an aqueous solution prepared by dissolving f... | 08/28/1990 |
| 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 new porphorins are particularly suitable as catalysts in a... | 01/09/1990 |
| 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-1. The product is also directed to such... | 08/15/1989 |
| 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 to provide an effective cement dispersant with low set time... | 07/11/1989 |
| 4786720 | Sulfomethylated lignin amines Surface active agents are prepared from by-products of papermaking. Lignin, modified lignin, resin acid, and tall oil fatty acid are reacted with a polyamine to produce an amine condensate, and this amine condensate is reacted with a bisulfite and formald... | 11/22/1988 |
| 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 containing an average of more than 0.4 sites per phenyl pr... | 09/06/1988 |
| 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 pH, lowering the pH of the methylolated lignin to precipi... | 05/31/1988 |
| 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. Preferably, the ethylenediaminetetraacetic acid is employed in an a... | 05/10/1988 |
| 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 liquor residue is water-wash purified and maintained at modera... | 04/26/1988 |
| 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 as additives in other chemical compositions. The lignin ami... | 03/22/1988 |
| 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 reaction with an amine compound having a lower dissociatio... | 12/29/1987 |
| 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 with at least 9 carbon atoms in total. The acid addition sa... | 04/21/1987 |
| 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 lignosulfonate at a solids concentration of 20% to 40%, ad... | 12/31/1985 |
| 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 the aldehyde, epoxide, or polyhalide type at a pH range o... | 10/08/1985 |
| 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 |
| 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 in a strongly polar ketone, preferably methyl isobutyl keto... | 06/22/1982 |
| 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 broken-down lignin-cellulose silicate polymer which is then ... | 02/02/1982 |
| 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 |
| 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 or lignosulfonates derived from spent sulfite liquor. Deme... | 02/10/1981 |
| 4219471 | Lignosulfonate derivatives This invention relates to lignosulfonate derivatives and alkali metal salts thereof derived from sulfite waste liquor that has been subjected to alkaline oxidation, hydrolysis and partial desulfonation with subsequent resulfonation; and followed by one or... | 08/26/1980 |
| 4017419 | Cationic bituminous emulsions A cationic bitumen emulsion stabilized with a polyamine-lignin reaction product is described.... | 04/12/1977 |
| 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 liquor followed by separation of the precipitated portion, ... | 02/08/1977 |
