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Paper Making And Fiber Liberation > Processes Of Chemical Liberation, Recovery Or Purification Of Natural Cellulose Or Fibrous Material > Treatment With Particular Chemical Treatment With Particular ChemicalTreatment With Particular Chemical patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.12/28/06 - 20060289132 - Method of preparing microfibrillar polysaccharide The present invention relates to a method of preparing microfibrillar polysaccharide comprising treating a polysaccharide in an aqueous suspension comprising an oxidant and at least one transition metal, mechanically delaminating said polysaccharide such that microfibrillar polysaccharide is formed. The invention also relates to microfibrillar polysaccharide obtainable by the method. ... 11/23/06 - 20060260773 - Ligno cellulosic materials and the products made therefrom A process comprising treating a lignocellulosic material preferably pulp in the presence of a transition metal catalyst with a oxidizing agent selected from a group consisting of hydrogen peroxide, hypochlorite, hypochlorous acid and any combination thereof to form a treated lignocellulosic material having a viscosity equal to or less than ... 10/19/06 - 20060231223 - Use of alkenyl succinic anhydride compounds derived from symmetrical olefins in internal sizing for paper production A method of sizing paper for use in applications which require resistance to liquids comprising incorporating in the paper a size composition comprising one or more alkenyl succinic anhydride (ASA) compounds prepared from the reaction of maleic anhydride and one or more substantially symmetrical C20-C28 internal olefins. ... 09/21/06 - 20060207734 - Chemical oxidation for cellulose separation An oxidative solution (Ox-B, a solution of no less than 5:1 sodium hypochlorite: hydrogen peroxide) was found to remove both lignin and hemicellulose from sugarcane bagasse. After treatment the cellulosic residue readily separated from the lignin and hemicellulose by sedimentation. The residue (the pulp) contained up to 80% by weight ... 07/06/06 - 20060144532 - Mercerization process of pulp to produce high porous material This invention relates to mercerized cellulose fibers which form a fibrous web that exhibit an Air Porosity equal to or greater than about 100 cfm/sq ft as determined by the procedure of TAPPI T251 cm-85 on 60 gsm handsheets at a pressure of 125 Pa, and preferably having a kink ... 06/22/06 - 20060130984 - Method for bleaching fibrous materials The invention relates to a method for bleaching fibrous materials, in particular lignin-containing materials for producing paper consisting in adding at least a first additive and at least one type of bleaching liquid to a fibrous solution which contains at list one bleaching agent. After mixing said bleaching solution with ... 06/01/06 - 20060113048 - Method for washing pulp in a bleaching line and a bleaching line The method is for bleaching cellulose pulp in a bleaching line that has at least two bleaching steps including a first and second bleaching steps. The bleaching steps have wash apparatuses for the pulp arranged after the first and second bleaching steps. The dilution liquor is led in counter-currently to ... ### FreshPatents.com Support |