| Patents for D21C 3 - Pulping cellulose-containing materials (5,020) |
|---|
| 01/28/1987 | CN85105752A Organosol process for hydrolytic decomposition of lignocellulosic and starch materials |
| 01/21/1987 | CN85102726A Multistage pulping process using batch digester |
| 01/20/1987 | CA1216709A1 Treatment of wood-chips |
| 01/06/1987 | US4634499 Sulfite process for making pulp having a tactile softness from hardwood chips |
| 01/06/1987 | US4634498 Method for the production of high density fiberboard |
| 01/06/1987 | CA1216105A1 Pulping process |
| 12/30/1986 | US4632729 Efficiency; flashing prevention; paper pulps |
| 12/30/1986 | EP0205778A1 Sulphite pulping process for preparing cellulose pulp from lignocellulosic materials with recovery of the pulping chemicals |
| 12/30/1986 | EP0091457B1 A method of polysulphide treatment in alkaline pulping of lignocellulose material |
| 11/12/1986 | CN85104046A Process for pulp making using grasses as raw materials |
| 11/05/1986 | EP0074983B1 High efficiency organosolv saccharification process |
| 10/29/1986 | EP0199481A1 A process for the manufacture of cellulose pulps |
| 10/28/1986 | US4619733 Pollution free pulping process using recycled wash effluent from multiple bleach stages to remove black liquor and recovering sodium hydroxide from the black liquor |
| 10/28/1986 | CA1213104A1 Method and apparatus for oxygen delignification |
| 10/14/1986 | CA1212505A1 Method, process and apparatus for converting wood, wood residue and or biomass into pulp |
| 10/07/1986 | CA1212413A1 Primary battery system |
| 09/25/1986 | WO1986005529A1 Process for preparing bleached pulp out of lignocellulosic raw material |
| 09/17/1986 | EP0194982A2 A method of manufacturing bleached chemimechanical and semichemical fibre pulp by means of a two-stage impregnation process |
| 09/16/1986 | US4612352 Water-soluble or water-dispersible graft polymers, their preparation and their use |
| 09/09/1986 | CA1210907A1 Method for use in continuous digestion of finely divided cellulose-containing material |
| 08/26/1986 | US4608121 Energy-efficient |
| 08/26/1986 | CA1210209A1 Delignification process of wood and other lignocellulosic materials |
| 08/13/1986 | EP0190723A1 Process for improving the mechanical properties of a chemical or semi-chemical bagasse paper pulp |
| 08/12/1986 | CA1209307A1 Process and alkaline sulfite-sulfide cooking liquor for the preparation of pulp out of lignin-containing cellulose raw-material |
| 07/30/1986 | EP0188979A1 Process for the preparation of anthraquinone |
| 07/30/1986 | CN86101158A Process for the mechanical properties improvement of chemical or semi-chemical begasse pulp |
| 07/22/1986 | US4601787 Method of bringing a digester up to cooking temperature |
| 07/17/1986 | EP0097716A4 High bulk pulp, filter media utilizing such pulp, related processes. |
| 07/15/1986 | USRE32203 Delignification, cooking, reduction |
| 07/08/1986 | US4599240 L/w-calorie bread |
| 07/02/1986 | CN85105043A Cotton stem pulp and linseed pulp for wrapping paper and electric-insulating paper manufacture |
| 07/01/1986 | US4597830 Method and pulping composition for the selective delignification of lignocellulosic materials with an aqueous amine-alcohol mixture in the presence of a catalyst |
| 06/24/1986 | CA1206305A1 Method for preparing an easily debonded pulp sheet |
| 06/17/1986 | US4595455 Method for controlling batch alkaline pulp digestion in combination with continuous alkaline oxygen delignification |
| 06/10/1986 | US4594130 Pulping of lignocellulose with aqueous alcohol and alkaline earth metal salt catalyst |
| 06/10/1986 | CA1205930A1 Method for the purification of condensates from the sulfate process |
| 04/24/1986 | WO1986002393A1 Process of making cellulose pulp |
| 04/15/1986 | CA1203188A1 Delignification of lignocellulosic material |
| 04/15/1986 | CA1203055A1 Method of making sulphate pulp |
| 04/10/1986 | CN85106049A Power saving pulp beater |
| 03/27/1986 | WO1986001843A1 Method of obtaining cellulase deficient strains of white-rot fungi |
| 03/26/1986 | EP0060277B1 Process to produce pulps |
| 03/25/1986 | US4578149 Process for digesting cellulosic material with heat recovery |
| 03/10/1986 | CN85106047A 表面反应制浆法 Surface reaction pulping |
| 03/04/1986 | US4574032 Process for delignification of lignocellulosic material in the presence of anthraquinone in solution with white and black liquors |
| 02/19/1986 | EP0172135A1 Method, process and apparatus for converting wood, wood residue, vegetable fibre and biomass into pulp |
| 02/18/1986 | CA1200659A1 Alkaline pulping process |
| 02/04/1986 | US4568419 Continuous degestion to optimize uniformity |
| 01/07/1986 | CA1198858A1 Sulfite digester rate of delignification system |
| 12/31/1985 | US4561936 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 |
| 12/17/1985 | US4559103 Packaging paper and packaging material for packaging metallic material and method of producing the same |
| 12/03/1985 | US4556452 Compactor and heater for digestion |
| 11/21/1985 | EP0161330A1 Chip presteaming and air washing |
| 11/05/1985 | CA1196156A1 Pulping process and composition for achievement of same |
| 11/05/1985 | CA1196155A1 Method and reactor for continuous extraction of vegetable-fibre material |
| 10/29/1985 | CA1195811A1 Alkaline-oxygen delignification of cellulose pulp at atmospheric pressure |
| 10/22/1985 | US4548675 Nonsulfur chemimechanical pulping process |
| 10/10/1985 | WO1985004409A1 Procedure for recovering soluble carbohydrates contained in wood |
| 10/09/1985 | EP0157279A1 Sawdust pumping, and processing |
| 10/08/1985 | CA1194656A1 Process for the preparation of the digesting liquor required in a neutral sulfite cooking with an addition of anthraquinone |
| 09/24/1985 | CA1193808A1 Chemical pulp having improved strength, drainability and beatability, and a process of making said pulp |
| 09/11/1985 | EP0153977A1 Continuous digester system |
| 09/10/1985 | US4540468 Papermaking |
| 09/03/1985 | CA1192707A1 Method of polysulphide treatment of lignocellulose material in alkalic pulp production |
| 08/20/1985 | US4536432 Stabilized absorbent structure and method of making same |
| 08/20/1985 | CA1192072A1 High bulk pulp, filter media utilizing such pulp, related processes |
| 08/20/1985 | CA1192009A1 Process for delignifying lignocellulosic material in the presence of phenazine compounds |
| 08/13/1985 | US4534397 Improved strength; brightness |
| 07/31/1985 | EP0149753A1 Nonsulfur chemimechanical pulping process |
| 07/24/1985 | EP0148871A1 A process and an apparatus for chemical treatment of bulky organic materials, such as straw and other biomass, with volatile chemicals |
| 07/24/1985 | EP0148815A1 A process for the chemical pulping of lignocellulosic material |
| 06/18/1985 | CA1189005A1 Acid hydrolysis, caustic extraction, material treatment |
| 06/11/1985 | CA1188686A1 Method of producing celluloses having a low lignin content |
| 06/06/1985 | WO1985002423A1 A method for the production of cellulose by the batch cooking process |
| 05/28/1985 | US4520105 Sacchartfication by heating with wateer and lower aliphatic alcohols or ketones |
| 05/21/1985 | CA1187253A1 Paper making process utilizing an amphoteric mucous structure as binder |
| 05/14/1985 | CA1186855A1 Semi-chemical pulping process |
| 05/08/1985 | EP0139658A1 Method for simultaneously depectinate and dehydrate raw sugar-beet pulp |
| 05/02/1985 | EP0138882A1 Improved organosolv process for hydrolytic decomposition of lignocellulosic and starch materials |
| 04/30/1985 | CA1186106A1 Process and apparatus for the oxygen delignification of pulp |
| 04/24/1985 | EP0138484A2 Mechanical pulping |
| 04/17/1985 | EP0137611A2 Absorbent vegetable material and process for making same |
| 04/16/1985 | US4511433 Method for the simultaneous delignification of wood and other ligno-cellulosic materials and hydrolysis of the hemicellulose component thereof |
| 04/10/1985 | EP0136325A1 Method for treating lignocellulose materials to obtain cellulose. |
| 04/02/1985 | CA1184709A1 Method and apparatus for oxygen delignification |
| 03/27/1985 | EP0135461A1 Batch digester multi-stage pulping process |
| 03/05/1985 | US4502918 Two-stage chemical treatment of mechanical wood pulp with sodium sulfite |
| 02/12/1985 | US4498955 Control of active alkali in black liquor |
| 01/29/1985 | US4496426 Process for the continuous extraction of vegetable-fiber material in two stages |
| 01/17/1985 | WO1985000133A1 A process and an apparatus for chemical treatment of bulky organic materials, such as straw and other biomass, with volatile chemicals |
| 01/15/1985 | CA1180927A1 Process and apparatus for producing pulp |
| 01/08/1985 | CA1180512A1 Process for reducing carbohydrate losses in the sulfate pulping of wood by pretreating the wood with oxygen and nitrogen oxides |
| 12/27/1984 | CA1179807A Process for digesting cellulosic material |
| 12/20/1984 | WO1984004937A1 A process for the chemical pulping of lignocellulosic material |
| 12/11/1984 | US4487656 Process for bleaching paper pulp using melamine as a viscosity stabilizer |
| 12/04/1984 | US4486459 Process for preparing cellulose |
| 12/04/1984 | US4486267 Chemithermomechanical pulping process employing separate alkali and sulfite treatments |
| 12/04/1984 | CA1178756A1 Alkaline extraction initiated ozone bleaching of kraft pulp |
| 11/21/1984 | EP0125851A1 Absorbent non-delignified wood pulp |
| 11/13/1984 | CA1177608A1 Two-stage chemical treatment of mechanical wood pulp |