| Patents for D21C 3 - Pulping cellulose-containing materials (5,020) |
|---|
| 11/13/1984 | CA1177607A1 Chemical treatment of mechanical wood pulp |
| 10/24/1984 | EP0032919B1 Accelerated pulping process |
| 10/23/1984 | CA1176408A1 Process for the oxygen delignification of pulp |
| 09/25/1984 | US4473439 Process for pulping lignocellulosic material |
| 09/25/1984 | CA1174810A1 Process for delignifying lignocellulose material |
| 09/13/1984 | WO1984003527A1 Method for treating lignocellulose materials to obtain cellulose |
| 09/11/1984 | US4470851 Comminuted cellulose saccharification in acetone solvent with acid catalysis |
| 09/04/1984 | CA1173604A1 Production of chemimechanical pulp |
| 09/04/1984 | CA1173602A1 Process for producing special high alpha-cellulose pulps by means of a multistage cook including an acid prehydrolysis |
| 08/30/1984 | WO1984003304A1 Improved organosolv process for hydrolytic decomposition of lignocellulosic and starch materials |
| 08/30/1984 | WO1984003286A1 Method for simultaneously depectinate and dehydrate raw sugar-beet pulp |
| 08/21/1984 | US4466861 Process for the inhibition of the formation of deposits in cellulose pulping and cellulose pulp treating processes |
| 07/31/1984 | US4462865 Delignification of lignocellulosic materials with 2-imidazolidinones and 2-oxazolidinones |
| 07/03/1984 | CA1170003A1 Molybdenum compounds as sulfite pulping catalysts |
| 06/21/1984 | WO1984002428A1 Primary battery system |
| 06/19/1984 | US4455237 High bulk pulp, filter media utilizing such pulp, related processes |
| 06/13/1984 | EP0110683A1 Determining the degree of cooking in a sulphite digester delignification |
| 05/29/1984 | US4451567 Delignification and biological or enzymatic degradation |
| 05/29/1984 | US4451333 Process for cooking lignocellulosic materials intended for the production of paper pulp with 1,2,3,4-tetrahydro-9,10-anthracenediol |
| 05/29/1984 | US4451331 Liquor impregnation, compaction, heating and digestion |
| 05/15/1984 | CA1167205A1 Apparatus and method for medium consistency oxygen delignification of pulp |
| 05/15/1984 | CA1167204A1 Method for the delignification of wood and other ligno-cellulosic products |
| 04/25/1984 | EP0106460A1 Improved method and apparatus for oxygen delignification |
| 04/25/1984 | EP0105937A1 Method of manufacturing alcohol from ligno-cellulose material |
| 04/17/1984 | US4443357 Hydrophobic silica or silicate, compositions containing the same and methods for making and using the same |
| 03/13/1984 | US4436586 Method of producing kraft pulp using an acid prehydrolysis and pre-extraction |
| 03/06/1984 | US4435487 Marine |
| 03/06/1984 | US4435249 Oxygen delignified to produce bleachable pulp |
| 02/28/1984 | CA1162703A1 Process for the conversion of lignocellulosic material to cellulose pulp by alkaline preoxidation followed by alkaline oxygen-free digestion, both in the presence of a redox additive |
| 02/14/1984 | CA1162008A1 Production of chemical paper stock, and product thus made |
| 02/08/1984 | EP0100293A1 Improvement in batch processes for digesting wood chips |
| 01/18/1984 | EP0098803A1 Water-soluble or dispersible graft polymers, their production and use |
| 01/18/1984 | EP0098490A2 Process and apparatus for the preparation of cellulose, simple sugars and soluble lignine from vegetable biomasse |
| 01/17/1984 | US4426254 Ethylene oxide adduct, alpha-olefin sulfonate |
| 01/11/1984 | EP0097716A1 High bulk pulp, filter media utilizing such pulp, related processes. |
| 12/27/1983 | CA1159202A1 Alkaline sulfite pulping process |
| 12/21/1983 | EP0096548A1 Two-stage chemical treatment of mechanical wood pulp |
| 11/30/1983 | EP0095239A1 Delignification of lignocellulosic material |
| 11/08/1983 | US4414060 Method for sulfite pulping using water-soluble molybdenum containing compounds |
| 10/19/1983 | EP0091457A1 A method of polysulphide treatment in alkaline pulping of lignocellulose material. |
| 10/13/1983 | WO1983003435A1 Pulping process |
| 10/12/1983 | EP0090969A1 Process and reactor for the continuous digestion of fibrous plant material |
| 10/11/1983 | US4409032 Organosolv delignification and saccharification process for lignocellulosic plant materials |
| 09/27/1983 | CA1154208A1 Process for the delignification of lignocellulose materials |
| 09/20/1983 | CA1153852A1 Process for acid sulfite digestion of wood |
| 09/06/1983 | CA1153275A1 Hydrophobic silica or silicate, compositions for containing the same, and methods for making and using the same |
| 09/06/1983 | CA1153164A1 Process for pulping lignocellulosic |
| 09/06/1983 | CA1153161A1 Method for the production of greaseproof paper |
| 08/30/1983 | CA1152940A1 Delignification and bleaching of lignocellulosic pulp via photo-oxygenation |
| 08/09/1983 | US4397712 Digestion of lignin extract with aqueous solution of mild organic base |
| 07/21/1983 | WO1983002469A1 High bulk pulp, filter media utilizing such pulp, related processes |
| 07/19/1983 | CA1150012A1 Aqueous catalysed solvent pulping of lignocellulose |
| 07/05/1983 | CA1149254A1 Black liquor soap possessing improved deresinating ability |
| 06/23/1983 | WO1983002125A1 A method for the delignification of wood and other ligno-cellulosic products |
| 06/22/1983 | EP0082116A1 Method for the delignification of wood and other lignocellulosic products |
| 05/31/1983 | CA1147105A1 Process for depolymerization and extraction of lignin |
| 05/24/1983 | US4385184 Cationic surface active agents |
| 05/24/1983 | US4384921 Alkaline sulfite pulping process with sodium aluminate and anthraquinone |
| 04/28/1983 | WO1983001469A1 A method of polysulphide treatment in alkaline pulping of lignocellulose material |
| 04/26/1983 | CA1145107A1 Procedure for forming refiner pulps |
| 04/26/1983 | CA1145106A1 Procedure for improving properties of mechanical wood pulps |
| 04/12/1983 | CA1144311A1 Cooking method of lignocellulosic matters for the production of paper pulp |
| 03/30/1983 | EP0074983A1 High efficiency organosolv saccharification process. |
| 03/15/1983 | CA1142714A1 Process for the preparation of an agent which contains organic, cyclic compounds with keto and/or hydro groups and surfaceactive agents, and processes for the production of pulp using this agent |
| 02/22/1983 | CA1141507A1 Cedar defibration process |
| 02/08/1983 | CA1140706A1 Agent for use in pulp production |
| 12/21/1982 | CA1137802A1 Procedure for producing high yield pulp |
| 12/14/1982 | US4363700 Process for pulping lignocellulosic material with an alkaline sulfide cooking liquor containing an accelerating additive and reducing assistant |
| 12/14/1982 | US4363697 Method for medium consistency oxygen delignification of pulp |
| 12/08/1982 | EP0065984A1 Pulping in formic acid |
| 12/07/1982 | CA1136808A1 Dispersion for use in pulp production |
| 11/03/1982 | EP0063565A1 Use of ethanol in alkaline pulping |
| 10/14/1982 | WO1982003409A1 High efficiency organosolv saccharification process |
| 10/13/1982 | EP0062539A1 Method for oxygen delignification |
| 10/05/1982 | CA1132763A1 Use of cyclic keto compounds as additives in vapor phase pulping process |
| 09/22/1982 | EP0060277A1 Process to produce pulps. |
| 09/21/1982 | US4350566 Digestion; wood pulping; papermaking |
| 09/21/1982 | CA1131959A1 High yield fiber sheets |
| 09/14/1982 | CA1131484A1 Process and improved installation for the production of paper making pulp |
| 09/14/1982 | CA1131415A1 Pulping of lignocellulose with aqueous methanol/ catalyst mixture |
| 09/07/1982 | US4348256 Process for controlling the supply of delignifying and/or bleaching chemicals in the continuous delignification of lignocellulosic material |
| 08/31/1982 | US4347103 Method for sulfite pulping using water-soluble molybdenum-containing compounds as catalysts |
| 08/31/1982 | US4347101 Process for producing newsprint |
| 08/24/1982 | US4345913 Method and apparatus for determining the lignin content in pulp |
| 08/10/1982 | CA1129163A1 Process for the conversion of lignocellulosic material to cellulose pulp by alkaline preoxidation followed by alkaline oxygen-free digestion, both in the presence of a redox additive |
| 07/28/1982 | EP0056409A1 Pulping of lignocellulose with aqueous alcohol and alkaline earth metal salt catalyst. |
| 07/27/1982 | US4341609 Electrochemical conversion of biomass |
| 07/27/1982 | CA1128260A1 Method of production of chemical pulp |
| 07/22/1982 | WO1982002414A1 Hydrophobic silica or silicate compositions for containing the same and methods for making and using the same |
| 07/13/1982 | CA1127358A1 Method of manufacturing sulphate pulp |
| 07/13/1982 | CA1127357A1 Process for producing alkali pulp |
| 07/06/1982 | US4338158 Pulping in the presence of a protector |
| 06/16/1982 | EP0054015A1 Process and apparatus for producing cellulose |
| 06/10/1982 | WO1982001902A1 A process for pulping wood and bark in formic acid |
| 06/10/1982 | WO1982001901A1 Reutilization of spent pulping liquors |
| 06/09/1982 | EP0053389A1 Process for preparing cationic surface active agents |
| 05/25/1982 | US4331507 Precipitation of silica with bauxite |
| 05/18/1982 | CA1123554A1 High yield chemimechanical pulping processes |
| 05/13/1982 | WO1982001568A1 Use of ethanol in alkaline pulping |
| 05/11/1982 | US4329200 Alcohols or ketones, ammonium sulfide or bisulfide |