| Patents for D21C 5 - Other processes for obtaining cellulose, e.g. cooking cotton linters (5,432) |
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| 06/09/1994 | WO1994012621A1 Enhancement of enzyme reactions |
| 06/09/1994 | WO1994012619A1 Enhancement of enzyme reactions |
| 06/09/1994 | CA2150564A1 Enhancement of enzyme reactions |
| 06/09/1994 | CA2150562A1 Enhancement of enzyme reactions |
| 06/09/1994 | CA2148448A1 Processing of pulp |
| 06/08/1994 | CN1087560A Method and apparatus for separating paper fiber and plastics from mixed waste materials and products obtained thereby |
| 06/07/1994 | US5318905 Stable against alkaline conditions, anionic surfactants; deinking waste newspaper |
| 05/31/1994 | US5316621 Defibering, screening, dewatering, mixing with surfactant, foam flotation |
| 05/31/1994 | CA2110190A1 Control of treatment dosage to papermill broke |
| 05/28/1994 | CA2109749A1 Method of controlling biotechnological pulp and paper processing using noble gases |
| 05/25/1994 | EP0598538A2 Treatment of lignocellulosic pulps |
| 05/25/1994 | EP0597950A1 Dewatering of aqueous suspensions |
| 05/24/1994 | US5314637 Detergent comprising isolated cellulase from bacillus ferm bp-3431 or a mutant strain thereof, surfactant and builder |
| 05/24/1994 | US5314580 Process for the removal of ink, resin, and adhesive residues from paper, textile fabrics and solid surfaces |
| 05/19/1994 | DE4238336A1 Used paper suspension cleaning process and appts. - has thickener or washer for sludge from flotation unit to be returned to the flotation stage |
| 05/10/1994 | US5310459 Apparatus and method for deinking waste paper pulp |
| 05/03/1994 | US5308449 Method for treating a paper pulp with an enzyme solution |
| 05/03/1994 | US5308448 Anionic surfactants added to paper wastes |
| 04/27/1994 | EP0496773B1 Aqueous dispersions containing carboxylic and/or resin acids for de-inking printed waste paper |
| 04/26/1994 | US5306392 Process for preparing pulp using potassium-based alkaline solution |
| 04/20/1994 | EP0592789A2 Process for deinking wastepaper utilizing organoclays formed in situ |
| 04/19/1994 | US5304316 Deinking agent for regenerating waste printed paper comprising reaction product of compound having an OH group, a dicarboxylic acid, or an anhydride thereof |
| 04/12/1994 | US5302245 Integrated wastepaper treatment process |
| 04/12/1994 | US5302244 Oxygen delignification of waste cellulosic paper products |
| 04/12/1994 | US5302243 Using the reaction product of ethylene and propylene oxides with fats, oils, mono-to hexahydric alcohols together with a transesterification mixture of fats and oils with mono-to hexahydric alcohols |
| 04/12/1994 | US5302242 Treating with a synergistic combination of at least two of the following; an aliphatic petroleum distillate, ethylene oxide alkylphenol adduct and/or an ethoxylated propylene glycol polymer at a wide pH range |
| 04/06/1994 | EP0590626A1 Process for treating printed waste paper |
| 03/30/1994 | CN1084597A Process for de-inking paper and fabric cleaning |
| 03/29/1994 | US5298405 Enzyme preparations with recombinantly-altered cellulose profiles and methods for their production |
| 03/16/1994 | EP0587270A1 Method of bleaching paper pulp |
| 03/16/1994 | EP0587000A1 Process for recycling silicon-coated paper |
| 03/16/1994 | EP0586399A1 Method for recycling plastic coated paper product waste and polymeric film |
| 03/11/1994 | CA2105829A1 Deinking of xerographic paper |
| 03/09/1994 | EP0585955A1 Repulping paper and paperboard |
| 03/03/1994 | WO1994004745A1 Algal pulps and pre-puls and paper products made therefrom |
| 03/03/1994 | WO1994004664A1 New xylanases having high activity and stability at alkaline conditions and high temperatures |
| 03/03/1994 | WO1994001614A3 Process for de-inking paper and fabric cleaning |
| 03/03/1994 | CA2142818A1 New xylanases having high activity and stability at alkaline conditions and high temperatures |
| 03/02/1994 | EP0584513A1 Pitch control treatment |
| 03/02/1994 | EP0584507A2 Process for deinking composite sheets |
| 03/02/1994 | EP0584176A1 Process, using enhanced-action laccase enzymes, for the delignification or bleaching of lignocellulose-containing material or for the treatment of waste water |
| 03/02/1994 | CN1083085A Multi-component adhesive polymer |
| 03/01/1994 | US5290401 Method and a device for separating plastic particles from supensions |
| 02/23/1994 | EP0583319A1 Lipase-catalyzed ester hydrolysis. |
| 02/23/1994 | EP0583310A1 Use of cellulase for pulp treatment. |
| 02/22/1994 | US5288369 Mixture of higher fatty acids or salts |
| 02/22/1994 | CA1327104C Method of preparing a pulp |
| 02/22/1994 | CA1327103C Method for deinking wastepaper |
| 02/16/1994 | EP0420860B1 Process and apparatus for the manufacture of pulp for paper, board, fiberboard and similar products |
| 02/15/1994 | US5286346 Deinking of wastepaper with quaternized hydroxyethyl cellulose |
| 02/03/1994 | DE4225185A1 Recycling waste vegetable material, esp. rice hulls etc. - by heating under pressure with sodium sulphite, hydrolysing with sulphuric acid and converting the slurry obtd. into expanded foam prods. |
| 02/02/1994 | EP0581631A1 Selective treatment of pulp with ozone |
| 02/02/1994 | EP0581446A1 Method for the treatment of mechanical pulps |
| 02/02/1994 | EP0580710A1 Novel microorganisms and novel enzymes |
| 02/02/1994 | CN1081484A Method for producing a delignified papermaking fiber from recycled, high lignin content, waste paper and product thereof |
| 02/02/1994 | CA2101181A1 Process for the separation of printing ink from composite materials |
| 02/01/1994 | US5282997 Process and composition for deinking dry toner electrostatic printed wastepaper |
| 02/01/1994 | US5282928 A reaction product of alkylene oxide with glycerol, a mixture of mono, di or triglyceride from higher fatty acid and alcohol ; discoloration, defoaming of waste paper |
| 02/01/1994 | CA2101188A1 Selective treatment of pulp with ozone |
| 01/27/1994 | DE4224607A1 New biodegradable ether carboxylate stabilising agent - useful for oxidative or reductive bleaching of TMP, CTMP, mechanical wood pulp or chemical pulp and for de-inking waste paper |
| 01/26/1994 | EP0580087A1 Process for reusing waste paper |
| 01/26/1994 | EP0579708A1 Lipase-catalyzed ester hydrolysis |
| 01/26/1994 | EP0579672A1 Xylanase, corresponding recombinant dna sequence, xylanase containing agent, and use of the agent |
| 01/25/1994 | US5281358 Deinking agent |
| 01/25/1994 | US5281348 Use of anionic surfactant/dispersant blends for the deinking of groundwood newsprint |
| 01/24/1994 | CA2101225A1 Wastepaper treatment method |
| 01/20/1994 | WO1994001614A2 Process for de-inking paper and fabric cleaning |
| 01/20/1994 | WO1994001538A1 A novel cellobiose oxidase, an enzymatic agent and a process for treating paper pulp |
| 01/20/1994 | WO1994001532A1 ALKALOPHILIC BACILLUS sp. AC13 AND PROTEASE, XYLANASE, CELLULASE OBTAINABLE THEREFROM |
| 01/20/1994 | CA2139730A1 Process for de-inking paper and fabric cleaning |
| 01/20/1994 | CA2139492A1 A novel cellobiose oxidase, an enzymatic agent and a process for treating paper pulp |
| 01/19/1994 | EP0579001A1 Waste paper processing |
| 01/18/1994 | CA2100741A1 Method for waste paper treatment |
| 01/16/1994 | CA2100374A1 Pitch control treatment |
| 01/12/1994 | CN1023502C Process and apparatus for mannfacture of pulp for paper, board, fiberboard and similar products |
| 01/11/1994 | US5277760 Process for the manufacture of pulp for paper, and fiberboard products using alkaline cooking chemical and oxygen in a closed, continuous and pressurized tube system |
| 01/11/1994 | US5277758 Method for recycling plastic coated paper product waste and polymeric film |
| 01/07/1994 | CA2099755A1 Deinking process |
| 01/06/1994 | WO1994000633A1 Methods of deinking cellulosic materials |
| 01/05/1994 | EP0577396A1 Process for de-inking recycled paper pulp |
| 01/05/1994 | EP0576529A1 Process for removing printing ink from waste paper |
| 01/05/1994 | EP0576470A1 A method for reducing pitch trouble in mechanical pulp. |
| 12/29/1993 | EP0576128A1 Polymer blend containing an acid-rich polymer |
| 12/24/1993 | CA2098464A1 Multi-component adhesive polymer |
| 12/22/1993 | CN1079789A Manufacture technology of sea-weed fibre |
| 12/16/1993 | CA2098144A1 Method for improving quality of deinked high grade waste paper |
| 12/16/1993 | CA2071290A1 A method to obtain white cellulose from palm leaves |
| 12/15/1993 | EP0573536A1 Xylanase, xylanase-producing bacillus and applications thereof. |
| 12/15/1993 | EP0573497A1 Recycling waste cellulosic material. |
| 12/15/1993 | EP0489104B1 Process for treatment of lignocellulosic pulp |
| 12/14/1993 | US5269941 Process and apparatus for the treatment of effluents containing emulsion inks |
| 12/14/1993 | CA1325084C Floatation process for deinking printed waste paper |
| 12/09/1993 | WO1993024702A1 Waste paper treatment process |
| 12/09/1993 | WO1993024622A1 Mannanase enzymes, genes coding for them, methods for isolating the genes, and methods for bleaching lignocellulosic pulps |
| 12/09/1993 | WO1993024621A1 Novel enzyme preparations and methods for their production |
| 12/09/1993 | WO1993024619A1 Lipases from hyphozyma |
| 12/09/1993 | CA2137236A1 Waste paper treatment process |
| 12/09/1993 | CA2135923A1 Mannanase enzymes, genes coding for them, methods for isolating the genes, and methods for bleaching lignocellulosic pulps |
| 11/30/1993 | US5266158 Monoperoxysulfuric acid, halide ion |
| 11/25/1993 | WO1993023606A1 Process for producing paper or paperboard with increased strength from mechanical pulp |