D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters

Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265)
12/1992
12/16/1992	EP0518036A1 Use of zeolites in bleaching processes
12/16/1992	EP0517716A1 Membrane separation process
12/15/1992	US5171405 Reactor having a discontinuous conduit means between surfaces of a downwardly extending stationary spiral
12/10/1992	WO1992021814A1 Process for bleaching and delignifying chemical paper pulp
12/10/1992	WO1992021813A1 Biobleaching process
12/10/1992	CA2110698A1 Process for bleaching and delignifying chemical paper pulp
12/09/1992	EP0517691A1 Medium consistency ozone bleaching
12/09/1992	CA2070556A1 Process for bleaching wood pulp
12/08/1992	US5169555 Pulp bleaching solution
12/08/1992	US5169497 Application of enzymes and flocculants for enhancing the freeness of paper making pulp
12/08/1992	US5169496 Heating pulp in the presence of water to reduce the water retention value
12/08/1992	US5169495 Without removing hydrogen peroxide or sodium hydroxide
12/08/1992	CA2044100A1 Biobleaching process
12/02/1992	EP0515530A1 Apparatus for filtering liquids.
12/02/1992	EP0515502A1 Apparatus for filtering liquids.
12/02/1992	EP0515492A1 An apparatus for filtering suspensions and a method of operating the apparatus.
12/02/1992	EP0515362A1 Bleaching of lignocellulosic material with dioxiranes.
12/02/1992	EP0348411B1 An improved peroxide bleaching method
12/01/1992	CA1310797C Pulp bleaching process
11/1992
11/26/1992	WO1992008842A3 Method for producing dietary fibers from nonwoody lignocellulosic substrates by oxidation
11/25/1992	EP0515303A1 Two stage pulp bleaching reactor
11/25/1992	EP0514901A2 Dye removal in oxygen color stripping of secondary fibers
11/25/1992	EP0514864A1 Oxygen detackification in secondary fiber recovery
11/25/1992	EP0514609A1 Process for hydrogen peroxide bleaching of high-yield pulps
11/25/1992	EP0514608A1 Process for hydrogen peroxide bleaching of high-yield pulps
11/24/1992	CA1310452C Method for producing chemi-thermomechanical pulp
11/19/1992	EP0513140A1 A process for the bleaching of chemical pulp.
11/19/1992	DE4137761A1 Verfahren zur delignifizierung von lignocellulosehaltigem material, bleiche und behandlung von abwaessern mittels laccasen mit erweiteter wirksamkeit Process for the delignification of lignocellulosic material, pale and treatment of wastewater by means of laccases with extended effectiveness
11/19/1992	DE4115575A1 Bleach compsns. esp. for paper making - contg. sulphite and/or dithionite and borohydride, giving improved whiteness levels
11/18/1992	WO1992020857A1 Process, using enhanced-action laccase enzymes, for the delignification or bleaching of lignocellulose-containing material or for the treatment of waste water
11/18/1992	CN1066308A Pulp alkali addition process for high consistency delignification
11/18/1992	CA2103260A1 A process for the delignification of material containing lignocellulose, bleaching and treatment of white water by means of laccases with extended efficiency
11/17/1992	US5164044 And oxygen
11/17/1992	US5164043 Environmentally improved process for bleaching lignocellulosic materials with ozone
11/17/1992	CA1310292C Discharging apparatus
11/12/1992	WO1992019808A1 Lipase-catalyzed ester hydrolysis
11/11/1992	EP0512978A1 Process for bleaching xylan and lignocellulose containing materials
11/11/1992	EP0512977A1 Process for bleaching cellulosic material
11/11/1992	EP0512790A1 Treatment of alkali treated pulp for use in papermaking
11/11/1992	EP0512590A1 Process for bleaching of lignocellulose-containing material
11/11/1992	EP0512098A1 Pulp bleaching method and reactor
11/08/1992	CA2167946A1 Method for the use of enzymes in processing and bleaching of paper pulp, and apparatus for the use thereof
11/05/1992	DE4114135A1 Chlorine-free bleaching and delignification of alkali cellulose - by first treating with aq. organic peracid soln. and then with cyanamide (salt) activated hydrogen peroxide soln.
11/05/1992	DE4114134A1 Chlorine-free bleaching and delignifying of alkali cellulose - by bleaching with aq. peracid, extracting with alkaline soln.,bleaching with aq. peracid and bleaching twice with cyanamide-activated hydrogen peroxide soln.
11/04/1992	EP0511933A2 Dictyoglomus microorganisms and their xylanolytic enzymes
11/04/1992	EP0511695A1 Process for bleaching of lignocellulose-containing pulp
11/04/1992	EP0511433A1 Medium consistency pulp ozone bleaching
11/03/1992	US5160581 Method for oxygen bleaching paper pulp
11/03/1992	US5160434 Filter cylinder with drainage surface
11/03/1992	CA2067880A1 Method of bleaching xylan and lignocellulose-containing materials
11/03/1992	CA2067844A1 Process for bleaching cellulosic material and plant for carrying out the process
11/03/1992	CA1309610C Apparatus for treating fibre material containing liquid
10/1992
10/31/1992	CA2139246A1 Process for bleaching of lignocellulose-containing pulp
10/31/1992	CA2102713A1 Process for bleaching of lignocellulose-containing material
10/29/1992	WO1992018688A1 Use of cellulase for pulp treatment
10/29/1992	WO1992018638A1 Lipase-catalyzed ester hydrolysis
10/28/1992	EP0511186A1 Method of producing multi-ply paper and board products exhibiting increased stiffness
10/24/1992	CA2066811A1 Method of producing multi-ply paper and board products exhibiting increased stiffness
10/21/1992	EP0509981A1 Two stage pressure diffuser
10/21/1992	EP0509905A1 Process for producing high yield bleached pulp
10/21/1992	EP0509561A2 Method and apparatus for treating fiber suspension
10/21/1992	EP0457865A4 Method for bleaching with reduced organic chlorides
10/20/1992	US5156750 Controlling thickness of fiber mat
10/20/1992	CA1308952C Pulp washer discharging a pulp slurry at a controlled consistency
10/20/1992	CA1308913C Chlorination control system
10/19/1992	WO1992018689A1 Pulp alkali addition process for high consistency oxygen delignification
10/19/1992	WO1992018612A1 Novel microorganisms and novel enzymes
10/19/1992	CA2108567A1 Novel microorganisms and novel enzymes
10/15/1992	WO1992017639A1 Method for reducing colored matter from bleach effluent using a dzd bleach sequence
10/15/1992	DE4111574A1 Oxidative bleaching of pulp, esp. for paper mfr. - using depot alkali besides soluble alkali and pref. hydrogen peroxide to increase whiteness
10/15/1992	CA2107883A1 Method for reducing colored matter from bleach effluent using a dzd bleach sequence
10/14/1992	EP0508064A1 Process for the delignification of cellulose-containing material
10/07/1992	EP0507723A1 Xylanase, corresponding recombinant DNA sequence, xylanase containing agent, and use of the agent
10/07/1992	EP0507369A2 Cloning, expression and use of acetyl xylan esterases from fungal origin
10/07/1992	CN1065109A High efficiency chlorine dioxide pulp bleaching process
10/03/1992	WO1992017573A1 Xylanase, corresponding recombinant dna sequence, xylanase containing agent, and use of the agent
10/03/1992	CA2106484A1 Xylanase, corresponding recombinant dna sequence, xylanase containing agent, and use of the agent
10/01/1992	WO1992016687A1 A method for reducing pitch trouble in mechanical pulp
10/01/1992	CA2105159A1 A method for reducing pitch trouble in mechanical pulp
09/1992
09/30/1992	EP0505464A1 Process for continuously bleaching liquids with ozone
09/29/1992	CA1308096C Porphyrins, their syntheses and uses thereof
09/29/1992	CA1307970C Process for making expanded fiber
09/21/1992	WO1992016288A1 Apparatus for mixing a suspension of cellulosic fibrous material and fluid
09/21/1992	CA2105991A1 Apparatus for mixing a suspension of cellulosic fibrous material and fluid
09/17/1992	WO1992015754A1 A method for fiber loading a chemical compound
09/17/1992	CA2103549A1 Method for fiber loading a chemical compound
09/16/1992	EP0503304A1 Process for the delignification of cellulose-containing material
09/16/1992	EP0503303A1 Process for bleaching pulp in aliphatic monocarboxylic acids
09/15/1992	CA1307416C Method and apparatus for mixing chemicals into fiber pulp
09/12/1992	WO1992015752A1 Method for bleaching a chemical pulp and application of such method to the bleaching of a kraft pulp
09/12/1992	CA2105654A1 Method for bleaching a chemical pulp
09/09/1992	CN1064326A Method for control of pitch
09/09/1992	CA2062475A1 Process for the delignification of cellulose containing raw materials
09/09/1992	CA2062474A1 Process for the delignification of cellulose containing raw materials
09/09/1992	CA2062325A1 Process for the bleaching of cellulose in aliphatic monocarbonic acids
09/08/1992	US5145558 Composition for alkaline peroxide bleaching of wood pulp using a quaternary amine as additive
09/08/1992	US5145557 Chlorine-free bleaching method for dissolving-grade pulps using an op-z-p sequence
09/03/1992	WO1992014976A1 Method of microencapsulation of hyperbaric gas
09/03/1992	WO1992014404A1 Method and apparatus for injection of gas hydrates
09/02/1992	EP0500813A1 Process for bleaching of ligno-cellulosic material.

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