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| Number | Title | Issue Date |
| 8080129 | Environmentally benign TCF bleaching sequences for AS/AQ wheat straw pulp This invention reports an environmentally benign method of delignifying bleaching sequences to gain more than 80% ISO brightness for alkaline sulfite-anthraquinone (AS/AQ) wheat straw pulp comprising of AOPsYP0, AOPsEP0 and AOPsP0P | 12/20/2011 |
| 6902649 | Enhanced fiber additive; and use The disclosure provides a process of modifying a seed based fiber (SBF) to form an enhanced fiber additive (EFA). The process includes an acid treatment step and optionally at least one fiber modification step. Preferred EFA products and uses are described. ... | 06/07/2005 |
| 6800319 | Accessing leaf and/or stem parts of plants The invention relates to the separation and of components from vegetable raw materials. The invention provides a method for separating components from vegetable material which has at least leaf and/or stem parts, characterized in that the material is at least partly... | 10/05/2004 |
| 6666951 | Process for the production of articles from treated lignocellulosic particles and a formaldehyde based resin binder An improvement in the process for the production of articles from lignocellulosic material and a formaldehyde based resin binder comprising the step of treating the lignocellulosic material prior to combining it with the binder by exposing the lignocellul... | 12/23/2003 |
| 6562191 | Process for producing pulp with a mixture of formic acid and acetic acid as cooking chemical A process based on formic acid cooking for producing pulp from herbaceous plants and deciduous trees by using acetic acid as an additional cooking chemical. The obtained pulp can be used in fine paper and board production as short-fibered material, for in... | 05/13/2003 |
| 6379495 | Process for the production of cellulose paper pulps by biodelignification of vegetative masses Process for the production of cellulose paper pulps from vegetable masses, comprising the steps of mixing and conditioning a vegetative mass suitable to form a culture medium with an inoculum constituted of edible ligninolythic mushrooms, such as Lentinus... | 04/30/2002 |
| 6348127 | Process for production of chemical pulp from herbaceous plants A process for production of chemical fibrous pulp for making paper, paperboard and other fibrous products from herbaceous plants, such as kenaf. Pulp from the herbaceous plant is made by a process which involves densification of pieces of all or part of t... | 02/19/2002 |
| 6346165 | Method for production of lignocellulosic composite materials A method for improving the bondability of annual plant materials to a formaldehyde-based resin including the steps of: (a) providing a straw plant material having a plurality of fibers with each of the fibers surrounded by a waxy and silica layer; (b) ext... | 02/12/2002 |
| 6302997 | Process for producing a pulp suitable for papermaking from nonwood fibrous materials A process for producing a pulp suitable for papermaking from a nonwood fiber source material. Representative nonwood fiber source materials include corn stover and wheat straw. The process includes the steps of providing a nonwood fiber source material; d... | 10/16/2001 |
| 6258207 | Alkaline peroxide mechanical pulping of non-woody species High-yield chemimechanical lignocellulosic pulp is produced from non-woody species by cutting and screening the non-woody species, soaking them in an acidic aqueous solution preferably containing a chelating agent, treating the washed non-woody species wi... | 07/10/2001 |
| 6179959 | Method of making kenaf pulp A method of making kenaf pulp of the present invention is formed of a first process of cutting at least one of core, rind, root and stalk of kenaf into chips with a predetermined length; a second process of crushing the chips of kenaf by mixing the chips ... | 01/30/2001 |
| 6110323 | Methods of refining agricultural residues to absorbent cellulose, xylose, and plant nutrient liquor, and products produced by such methods A method of creating a number of separate product streams from an agricultural waste material, comprising: providing a starting material consisting of an agricultural waste material; hydrolyzing the starting material with an acid solution at atmospheric p... | 08/29/2000 |
| 6024832 | Method and apparatus for producing extensible paper A method for producing extensible paper, comprising the following stages: feeding a mix of vegetable fibres to a kneader member, mixing the mix with water in the kneader, beating the fibres to obtain a pulp, transferring the beaten pulp into a flow chest, feeding the be... | 02/15/2000 |
| 5958186 | Nonwoven material containing a mixture of pulp fibres and long hydrophillic plant fibres and a method of producing the nonwoven material Nonwoven material produced by hydroentanglement of a wet-laid or foam-formed fibre web. The material comprises a mixture of short plant fibres, in particular pulp fibres, and long hydrophillic plant fibres, where the major portion of the fibres presents a... | 09/28/1999 |
| 5958182 | Process for converting tropical plant material into fibers A process for converting tropical materials into fibers useful in paper-making, textiles, insulation, general fiber filler and the absorption of liquids. The tropical materials utilized in the process include, banana, plantain or cavendish plant stalks, p... | 09/28/1999 |
| 5944953 | Process for simultaneous mechanical and chemical defibration of corn stalks and straw materials A corn stalk and straw chip pulping method to greatly improve the yield of pulp by 1) preconditioning the corn stalk with propionic acid when harvesting or by impregnating the straw with HNO2 in the mill after chip washing, and 2) by pulping th... | 08/31/1999 |
| 5906709 | Process for producing fibers from vegetable raw materials using a thin and heated turbulent layer A process for producing cellulose from vegetable raw materials containing same by reacting these with digesting agents is described, comprising a preliminary size reduction of said raw materials to give a pumpable material, and a heat treatment of said ma... | 05/25/1999 |
| 5705216 | Production of hydrophobic fibers A woody or non-woody biomass is delignified through continuous extrusion technology, utilizing high-pressure steam to break down complex biomass materials. The process is useful to form a hydrophobic fiber material for use as an extrusion filler, a plasti... | 01/06/1998 |
| 5656129 | Method of producing fibers from a straw and board products made therefrom A method of refining wheat straw into fibers cuts the straw to a length of between about two and about four inches, wets the straw, softens the straw by subjecting the straw to pressurized steam and refines the softened straw in a pressurized mechanical r... | 08/12/1997 |
| 5650111 | Process of making cellulose products from straw A dispersion of cellulose based fibers in straw is produced by the aid of alkali and strong mechanical agitation. This solubilizes the pentosane in the straw, and turns the mixture into a high viscosity paste, so that the forces from the agitation tear th... | 07/22/1997 |
| 5601767 | Process for the production of a cellulose moulded body A process for the production of a cellulose moulded body, particularly cellulose fibres, characterized by the combination of the measures of feeding a cellulose-containing material into an aqueous solution of a tertiary amine-oxide in order to suspend said cel... | 02/11/1997 |
| 5366594 | Process of forming a cellulose product having a high content of silicate cross-linked cellulose polymer Plant wastes such as rice hulls which are high in cellulose and silica are converted into a slurry of water and a silicate cross-linked cellulose poller by digestion under heat and pressure in the presence of sodium ions and a sulfite. The slurry is treat... | 11/22/1994 |
| 5133834 | Process of forming an expanded lightweight foamed product from rice hulls Plant waste products high in cellulose and silica, i.e. rice hulls, are converted into a slurry of water and a silicate cross-linked cellulose polymer by digestion under heat and pressure in the presence of sodium ions and a sulfite. The slurry is treated... | 07/28/1992 |
| 4997488 | Combined physical and chemical treatment to improve lignocellulose digestibility A synergistic combination of high-shear mechanical disruption and alkali pretreatment in a high solids reaction mixture constitutes a significant improvement in the alkaline peroxide treatment of lignocellulosic materials. The simultaneous application of ... | 03/05/1991 |
| 4957599 | Alkaline extraction, peroxide bleaching of nonwoody lignocellulosic substrates An improved process for delignifying and bleaching nonwoody, lignocellulosic material into products digestible by ruminants and ingestible by humans. The process comprises treating the substrate in an alkaline solution for a period of time, separating the... | 09/18/1990 |
| 4859283 | Magnesium ions in a process for alkaline peroxide treatment of nonwoody lignocellulosic substrates An improved process for delignifying and bleaching nonwoody, lignocellulosic material into products digestible by ruminants and ingestible by humans. The process comprises treating the substrate in an alkaline solution for a period of time and adding magn... | 08/22/1989 |
| 4859282 | Acid purification of product from alkaline peroxide processing of nonwoody lignocellulosic substrates An improved process of purifying the product from an alkaline peroxide treatment process for delignifying and bleaching nonwoody lignocellulosic agricultural residues comprising, optionally washing with water, then lowering and maintaining the pH of the s... | 08/22/1989 |
| 4689117 | Thermomechanical digestion process for enhancing the brightness of cellulose pulp using bleachants The brightness of a thermomechanical pulp can be improved if a serial multiple blowdown technique is used and a bleachant is present at an effective concentration throughout the thermomechanical pulping process.... | 08/25/1987 |
| 4649113 | Alkaline peroxide treatment of nonwoody lignocellulosics By treating agricultural crop residues and other nonwoody lignocellulosic plant substrates with H2 O2 at a controlled pH within the range of about 11.2 to 11.8, the substrates are partially delignified and unprecedented levels of the... | 03/10/1987 |
| 4070232 | Prehydrolysis and digestion of plant material Plant material containing hemicellulose and lignin is prehydrolyzed in the presence of steam and the vapors of a dilute acid solution having a pH of 1.5-3.5 at a temperature of 105° C to 135° C for 7-20 minutes to hydrolyze the hemicellulose into pentos... | 01/24/1978 |
| 4040899 | Production of high strength packaging papers from straw Modified paper which exhibits high tear resistance and toughness and which contains a high percentage of straw fibers and which has fibers consolidated in a three step process including drawing water off by vacuum, press drying and fiber upsetting.... | 08/09/1977 |
