| Patents for D21C 9 - After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters (10,265) |
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| 10/01/2008 | CN100422441C Method for processing pulp using water insoluble chemical additives |
| 09/25/2008 | WO2008113839A1 Process for the control of pitch |
| 09/25/2008 | CA2679354A1 Process for the control of pitch |
| 09/24/2008 | CN101270193A Methods of making compositions |
| 09/24/2008 | CN101269510A Manufacturing technique for whitening type middle, high-density pressed-fibre board |
| 09/24/2008 | CN100420789C Full-closed zero discharge oxidizing pulping process and its preparation method |
| 09/24/2008 | CN100420788C Full-closed zero discharge bio-oxidizing pulping process and its preparation method |
| 09/23/2008 | CA2482556C Process for producing very low cod unbleached pulp |
| 09/18/2008 | WO2008076268A3 A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2 |
| 09/17/2008 | EP1969175A1 A novel catalytic reactor process for the production of commercial grade pulp, native lignin and unicellular protein |
| 09/17/2008 | CN101265678A Hydrogen peroxide stabilizer composition in paper pulp bleaching |
| 09/17/2008 | CN101265608A Bleaching and heating process and bleaching heating equipment in cellulose viscose pulp production |
| 09/12/2008 | WO2008107044A1 Process for drying and purifying a particulate cellulose/plastic waste mixture |
| 09/12/2008 | WO2008106811A1 Method for the breakdown of lignin |
| 09/12/2008 | CA2679854A1 Method for the breakdown of lignin |
| 09/11/2008 | US20080216981 Method for Conveying, Mixing, and Leveling Dewatered Pulp Prior to Drying |
| 09/10/2008 | EP1967577A1 Catalysed peroxide bleach (catylasator bleach) |
| 09/10/2008 | CN101260635A PPDM extraction method for agriculture waste straw fibre |
| 09/10/2008 | CN101260630A Straw and/ or ryegrass raw material semi-chemical pulp preparation method |
| 09/10/2008 | CN101260629A Physical method ecological paper pulp manufacturing technique |
| 09/04/2008 | WO2008104651A1 Method for functionalising carbohydrates |
| 09/03/2008 | CN201109884Y Unloading device for high density bleaching tower |
| 09/03/2008 | CN101255670A Exquisite kraft paper and producing method thereof |
| 09/02/2008 | US7419568 Reacting pulp sheet/fluff with glyoxylic acid and/or succinic semicaldehyde |
| 08/28/2008 | WO2008101952A1 Process for the bleaching of paper pulp |
| 08/28/2008 | US20080209597 Transgenic Cells Expressing Glucosyltransferase Nucleic Acids |
| 08/28/2008 | US20080202714 Methods and systems for the use of recycled filtrate in bleaching pulp |
| 08/28/2008 | CA2678466A1 Process for the bleaching of paper pulp |
| 08/27/2008 | CN101253292A Process of bleaching |
| 08/27/2008 | CN101250511A Method for promoting cellulolytic enzymes synthesis of trichoderma reesei by using dilute sulfuric acid treated pulp as carbon source |
| 08/21/2008 | WO2008099064A1 Method of producing paper and cardboard |
| 08/21/2008 | WO2008098921A1 Storage-stable surfactant solutions for peroxide bleaches |
| 08/21/2008 | WO2008098601A2 Fas bleaching |
| 08/21/2008 | US20080196848 Rotating surface on which a pulp web is formed; feed; discharge; remove filtrates; especially well suited for washing pulp; sulfate pulp industry; liquid removed; pulp washed after digestion and between and after bleaching stages; remarkable space saving; reduced number of apparatus; decrease expenses |
| 08/21/2008 | US20080196847 Pre-extraction and solvent pulping of lignocellulosic material |
| 08/20/2008 | EP1957709A1 Method of producing paper and cardboard |
| 08/20/2008 | CN101245565A Zero discharge clean method for producing corn cane man-made fiber pulp, xylitol |
| 08/20/2008 | CN100412267C Method for bleaching middle and thick paper pulp by hydrogen peroxide and through double bleaching tower |
| 08/14/2008 | WO2008076267A3 A process in a (d) stage bleaching of softwood pulps in a presence of mg(oh)2 |
| 08/14/2008 | WO2008060519A3 An improved bleaching process with at least one extraction stage |
| 08/14/2008 | US20080190573 Delignifying and/or bleaching of a pulp by reacting pulp, chlorine dioxide and a peroxidase; papermaking; treating wastewater and/or sludge by reacting wastewater and/or sludge, chlorine dioxide and a peroxidase; haloperoxidase; laccase; chlorine regenerated from chlorite by-product; efficiency |
| 08/14/2008 | DE102007007654A1 FAS Bleiche FAS bleach |
| 08/14/2008 | DE102007006908A1 Katalysierte Peroxidbleiche ("Katalysator-Bleiche") Catalyzed peroxide bleaching ("bleaching catalyst") |
| 08/13/2008 | EP1954872A1 A new pulp and process for pulping |
| 08/13/2008 | CN201099796Y Double roller displaced squeezing press master |
| 08/13/2008 | CN201099795Y Single spiral dewatering device |
| 08/08/2008 | CA2578305A1 Process for recovery of oligosaccharides and polysaccharides during pulping |
| 08/07/2008 | WO2008092988A1 New composition and process for the treatment of fibre material |
| 08/07/2008 | WO2008076268A9 A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2 |
| 08/07/2008 | WO2008057492A3 Pitch and stickies control in pulp and papermaking processes |
| 08/07/2008 | US20080185112 Product preparation and recovery from thermolysis of lignocellulosics in ionic liquids |
| 08/07/2008 | CA2673923A1 New composition and process for the treatment of fibre material |
| 08/06/2008 | EP1951953A1 A method and an apparatus for removing extractives from fibrous suspension |
| 08/06/2008 | EP1534892A4 Chemically cross-linked cellulosic fiber and method of making same |
| 08/06/2008 | EP1264041B1 Process for producing cellulose pulp and fertiliser containing potassium |
| 08/06/2008 | EP1009993B1 Method and arrangement for measuring the content of chemicals during bleaching |
| 08/06/2008 | CN101235607A Method for producing natural antibacterial bamboo fiber |
| 07/30/2008 | EP1950342A1 Emulsions |
| 07/30/2008 | CN101230549A Totally-chlorine-free bleaching method for paper pulp |
| 07/30/2008 | CN101230548A Chlorine-free bleaching process for chemical pulp |
| 07/30/2008 | CN100406645C High drainage dimensionally stable brownstock washer belt design |
| 07/29/2008 | CA2397138C Method of draining water from low-consistency water-fibre suspensions |
| 07/24/2008 | WO2008088279A1 Device and method for washing and dewatering cellulose pulp |
| 07/24/2008 | WO2008086937A2 Bleaching of substrates |
| 07/24/2008 | US20080173415 Screen plates having diagonal slots with curved inlets for a digester |
| 07/24/2008 | CA2670743A1 Bleaching of substrates |
| 07/23/2008 | EP1945852A1 Process for the deresination of pulp and use of carbon dioxide or (bi)carbonate therefor |
| 07/23/2008 | CN101225620A Method for preparing high-whiteness chemical pulp and paper products thereof by using corn stalk |
| 07/17/2008 | US20080171370 Detoxifying pre-treated lignocellulose-containing materials |
| 07/17/2008 | US20080169071 Continuous/batch processing; multizonal |
| 07/16/2008 | CN101220569A Pulping bleaching assistant and cold soaking pulping process |
| 07/16/2008 | CN101220567A Method for controlling with 100aste newsprint paper deinked pulp esterase |
| 07/16/2008 | CN101220565A Pulping method with zero discharge of sewage water |
| 07/16/2008 | CN100402745C Prepared bleach chemical pulp using grass kind plant as raw material and preparation method thereof |
| 07/16/2008 | CN100402743C Method for extruding black liquor from high-hardness plasm obtained by boiling grass plant raw material |
| 07/16/2008 | CN100402742C Mitigation technique in use for producing bleached chemical pulp by using raw material of grass |
| 07/16/2008 | CN100402741C Alkaline pulp having low average degree of polymerization values and method of producing same |
| 07/09/2008 | CN101215796A Discharging device for middle and high concentration reserving tower |
| 07/09/2008 | CN100400744C Moderate-thick paper pulp pressure stabilizing dual flow-lift tower oxygen bleaching method |
| 07/09/2008 | CN100400743C Quick cold soaking and mechanical pulping process for grass family |
| 07/08/2008 | US7396435 introducing pulps to rotating screw conveyors, then depositing on moving belts, smoothening and feeding to a flaker to reduce the size of pulp into flakes |
| 07/08/2008 | US7396434 Catalytic reactor process for the production of commercial grade pulp, native lignin and unicellular protein |
| 07/08/2008 | CA2378927C Preparation of chemical pulp and xylose, utilizing a direct acid hydrolysis on the pulp |
| 07/08/2008 | CA2275751C Method and arrangement for measuring the content of chemicals during bleaching |
| 07/03/2008 | WO2008077450A1 Method for the production of tissue paper |
| 07/03/2008 | CA2673175A1 Process for producing tissue paper |
| 07/02/2008 | EP1937398A1 Arrangement for mixing steam into a flow of cellulose pulp |
| 07/02/2008 | EP1581591B1 Polymer composition for peroxide bleaching of cellulosic fibre material and processes for peroxide bleaching |
| 07/02/2008 | EP1395699B1 Method and apparatus for the feeding of fibres |
| 07/02/2008 | CN101213339A A roll body for a press roll |
| 07/02/2008 | CN101210394A Technique for producing pure biological paper pulp |
| 06/28/2008 | WO2008081078A1 A method for manufacturing mechanical pulp |
| 06/26/2008 | WO2008076747A2 Processes of producing fermentation products |
| 06/26/2008 | WO2008076738A2 Detoxifying pre-treated lignocellulose-containing materials |
| 06/26/2008 | WO2008076268A2 A process in a (d) stage bleaching of hardwood pulps in a presence of mg(oh)2 |
| 06/26/2008 | WO2008076267A2 A process in a (d) stage bleaching of softwood pulps in a presence of mg(oh)2 |
| 06/26/2008 | WO2008076055A1 Process of pulping |
| 06/26/2008 | WO2008074220A1 A preparation method of a bamboo pulp |
| 06/26/2008 | US20080149568 adding calcium chloride and polymeric aluminium hydroxide salt to the solution; precipitation; basic waste water from the bleaching of chemical pulp; waste water from the bleaching of straw; aluminium hydroxide chloride |
| 06/26/2008 | US20080148999 Dispersant selected from cationic quaternaryamine surfactants, alkylalkoxylsilane, alkoxylsilane, and halide organosilane binds hydroxyl groups on cellulose fiber surfaces so as to inhibit bonding between hydroxyl groups of different fibers, thereby reducing inter-fiber hydrogen bonding |