Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265)
05/1995
05/24/1995CA2135742A1 Process for high-ph metal ion chelation in pulps
05/18/1995WO1995013421A1 Method of high yield paper pulp bleaching using hydrogen peroxide
05/18/1995WO1995013420A1 Method of bleaching chemical paper pulp
05/18/1995WO1995013419A1 Implementation of dissolved solids profiling
05/18/1995CA2176246A1 Method of bleaching chemical paper pulp
05/18/1995CA2176030A1 Method of high yield paper pulp bleaching using hydrogen peroxide
05/17/1995EP0652991A1 Zero discharge pulp mill.
05/17/1995EP0652990A1 Method of processing recycled paper.
05/17/1995EP0652961A1 Recombinant xylanases
05/17/1995EP0652945A1 C. antarctica lipase and lipase variants
05/17/1995EP0652802A1 Device for admixing a processing agent to a pulp suspension.
05/16/1995US5415739 Detackification agent for adhesives found in paper fiber furnishes
05/16/1995US5415735 Suspennnnnsion of galactoglucomannans and deacetylation using esterase enzymes
05/16/1995US5415734 Process for bleaching pulp without using chlorine containing chemicals
05/16/1995US5415294 Screen with a surface having projections or depressions
05/11/1995WO1995012710A1 A method of separating metal ions from pulp
05/11/1995WO1995012709A1 Process for bleaching a chemical pulp
05/11/1995CA2175817A1 Process for bleaching a chemical pulp
05/11/1995CA2173735A1 A method of separating metal ions from pulp
05/10/1995EP0652321A1 Chemical pulp bleaching
05/10/1995EP0651832A1 Process for gas phase delignifying wood pulp
05/10/1995EP0651792A1 A novel cellobiose oxidase, an enzymatic agent and a process for treating paper pulp
05/10/1995EP0651785A1 ALKALOPHILIC $i(BACILLUS sp. AC13) AND PROTEASE, XYLANASE, CELLULASE OBTAINABLE THEREFROM
05/10/1995EP0605449B1 Defoamer composition
05/10/1995EP0572388B1 Ctmp-process
05/10/1995EP0483163B1 Environmentally improved process for bleaching lignocellulosic materials
05/10/1995CN2196636Y Air-cushion type washing and sizing tower
05/09/1995US5413676 Cellulosic fiber of improved wettability
05/04/1995WO1995012029A1 Aminoalkane diphosphonic acids in pulp bleaching
05/04/1995WO1995012028A1 Multiple filter dynamic washer
05/04/1995CA2173488A1 Multiple filter dynamic washer
05/03/1995EP0650541A1 Process for bleaching pulp in conjunction with adsorption of metals.
05/02/1995US5411669 Conveying and fluid flow
05/02/1995US5411635 Exposure to a mixture of ozone and peroxymonosulfate
05/02/1995US5411634 Bleaching paper pulps with ozone gas
05/02/1995US5411633 Bleaching paper pulps with ozone gas
05/02/1995CA1335406C Process for the manufacturing of bleached chemicothermomecanical pulp
04/1995
04/26/1995EP0649941A1 Pitch control in paper mill systems
04/26/1995EP0649938A1 Process for the bleaching of chemical pulp
04/25/1995US5409570 Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone
04/23/1995CA2117984A1 Process for the bleaching of chemical pulp
04/20/1995WO1995010658A1 Sealing strip for dewatering device with press rolls
04/20/1995WO1995010657A1 Process for bleaching of pulp for paper making using hydrogen peroxide
04/20/1995WO1995010656A1 Methanol recovery
04/20/1995WO1995010486A1 Method and apparatus for treating paper mill effluent
04/20/1995WO1995010351A1 A method and an apparatus for mixing ozone-bearing gas into a pulp-suspension
04/20/1995WO1995010350A1 Method and device for mixing of a fluid into a pulp-suspension
04/20/1995CA2174087A1 Methanol recovery
04/19/1995EP0571433B1 Bleaching of lignocellulosic material with activated oxygen
04/19/1995CN1028251C Method for control of pitch
04/19/1995CN1028250C Pulpingy process
04/18/1995US5407827 Treating pulp with hydrolase enzyme(isolated from fungus culture) to release lignin without affecting cellulose
04/18/1995US5407426 Method and apparatus for delivering oxygen into blood
04/13/1995WO1995009946A1 A process for production of linerboard and corrugated medium
04/13/1995WO1995009945A1 Method of treating chemical paper pulp without using chlorine-containing chemicals
04/13/1995WO1995009944A1 DESCALING BY REGULATING pH AND SALT CONCENTRATION
04/13/1995WO1995009909A1 An enzyme preparation comprising a modified enzyme
04/13/1995CA2173215A1 Descaling by regulating ph and salt concentration
04/13/1995CA2173214A1 An enzyme preparation comprising a modified enzyme
04/12/1995EP0647466A2 Cellulosic membranes
04/12/1995EP0647158A1 Method for delignifying and bleaching a lignocellulose material.
04/12/1995EP0547057B1 Pressurized dynamic washer
04/11/1995US5405498 Method for improving pulp washing efficiency
04/11/1995US5405497 Gas is introduced through a porous surface of revolution producing bubbles
04/06/1995WO1995009268A1 Method and apparatus for dewatering of a fibre suspension
04/06/1995CA2172285A1 Method and apparatus for dewatering of a fibre suspension
04/05/1995EP0568599B1 Method for avoiding pitch troubles by use of thermostable lipase
04/04/1995US5403442 Pumping with deaerating centrifugal pump controls foaming on heat exchanging evaporator surfaces
04/04/1995US5403441 Minimal variation in pressure and oxygen concentration at ozone generator provided by five interacting feedback loops; high speed adjustment
03/1995
03/30/1995WO1995008667A1 Apparatus for fluffing high consistency wood pulp
03/30/1995WO1995008666A1 Chlorine-free bleaching of chemical pulp involving a two stage treatment with chelating agent
03/30/1995WO1995008665A1 A device for distributing liquid, especially washing liquid for washing paper pulp
03/30/1995WO1995008664A1 Oxygen delignification of medium consistency pulp slurry
03/30/1995CA2168445A1 Chlorine-free bleaching of chemical pulp involving a two stage treatment with chelating agent
03/29/1995EP0644966A1 Bleaching recycled pulp with a reductive-oxidative sequence.
03/29/1995EP0644965A1 Bleaching recycled pulp with ozone and hydrogen peroxide
03/28/1995US5401362 Control of metals and dissolved organics in the bleach plant
03/28/1995US5401360 Method for de-inking printed paper
03/23/1995WO1995008021A1 Eop stage for chlorine free bleaching
03/23/1995WO1995008020A1 Arrangement for spreading paper pulp in a container
03/23/1995WO1995007988A1 PURIFIED pH NEUTRAL RHIZOCTONIA LACCASES AND NUCLEIC ACIDS ENCODING SAME
03/23/1995CA2171288A1 Purified ph neutral rhizoctonia laccases and nucleic acids encoding same
03/22/1995CA2132165A1 Method for rapid ozone bleaching of wood pulp
03/21/1995CA2020047C Apparatus for dewatering pulp
03/16/1995WO1995007386A1 Papermaking process
03/16/1995WO1995007385A1 Method for the treatment of paper pulp and enzymatic aqueous preparation for carrying out same
03/16/1995CA2147276A1 Papermaking process
03/16/1995CA2132057A1 Pressurized peroxide bleaching
03/15/1995EP0643081A1 Polymers of vinylsulfonic acid
03/15/1995EP0642610A1 Treatment of bleach plant effluents
03/14/1995US5397434 Method for distributing cellulosic pulp through a reactor at a constant upward velocity
03/09/1995WO1995006774A1 Minimum adverse environmental pulp mill with feed to chlorate manufacture
03/09/1995WO1995006773A1 Medium consistency ozone brightening of high consistency ozone bleached pulp
03/09/1995WO1995006772A1 Improved method for bleaching lignocellulosic pulp
03/09/1995WO1995002086A3 Process for removing metal ions from liquids
03/09/1995CA2170733A1 Medium consistency ozone brightening of high consistency ozone bleached pulp
03/09/1995CA2170612A1 Minimum adverse environmental pulp mill with feed to chlorate manufacture
03/09/1995CA2170398A1 Improved method for bleaching lignocellulosic pulp
03/08/1995EP0641883A2 Oxygen delignification method
03/08/1995EP0641403A1 Process for producing paper or paperboard with increased strength from mechanical pulp.
1 ... 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 ... 103