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Francois Dupont, Lyon FR

Francois Dupont, Lyon FR

Patent application numberDescriptionPublished
20090170982Process for Manufacture of Paper Coatings With Improved Water Retention and Brookfield Viscosity Using a Comb Polymer With at Least One Grafted Polyalkylene Oxide Function - The invention concerns a process to manufacture paper coatings containing at least one mineral matter, at least one binder and water, characterised in that at least one comb polymer obtained by grafting of a least one polyalkylene oxide function on to the polymer chain, where the said chain results from the polymerisation of a least one ethylenic unsaturated monomer, is introduced into the above-mentioned composition.07-02-2009
20100038046USE OF AN AQUEOUS SUSPENSION AND/OR DISPERSION OF MINERAL MATERIALS CONTAINING A HYDROPHOBIC GROUP WATER-SOLUBLE COPOLYMER FOR MAKING A PAPER SHEET - The invention consists in the use, in a method for manufacturing a sheet of paper, of an aqueous suspension and/or dispersion of mineral materials as an agent for slowing the penetration of the paper coating into said sheet, characterized in that said suspension and/or dispersion contains at least one water-soluble copolymer made up of at least one ethylenically-unsaturated anionic monomer, and at least one ethylenically-unsaturated oxylalkylated monomer terminated by a hydrophobic chain.02-18-2010
20100095869METHOD FOR MANUFACTURING AN AQUEOUS SUSPENSION OR DISPERSION CONTAINING CALCIUM CARBONATE AND KAOLIN AND ITS USE IN THE MANUFACTURING OF PAPER COATINGS - The invention consists of a method for manufacturing an aqueous suspension or dispersion of calcium carbonate and kaolin, via steps of manufacturing, potentially in the presence of a dispersing agent or grinding agent, an aqueous suspension or dispersion of calcium carbonate with a solids content less than 70% of its weight, and of adding kaolin in dry powder form so as to achieve a ratio, by dry weight (precipitated calcium carbonate:kaolin) between (90:10) and (10:90).04-22-2010
20100184897PROCEDURE FOR MANUFACTURING AN AQUEOUS FORMULATION BASED ON A SOLUTION OF ACRYLIC COMB POLYMER AND ACRYLIC THICKENING EMULSION, THE FORMULATION OBTAINED AND ITS USE IN COATING PAPER - This invention relates to a process for producing a composition characterized in that it comprises the steps of: 07-22-2010
20100314061USE OF A MINERAL-MATERIAL STERIC DISPERSING AGENT IN WATER, AQUEOUS DISPERSION THUS OBTAINED AND USE THEREOF IN PAPER MAKING - A method for manufacturing a sheet of paper from a pulp and a sheet of paper obtained by the present method, wherein said pulp comprises a mixture of natural and/or synthetic fibers, water, and at least one aqueous suspension and/or dispersion comprising at least one mineral material, wherein said dispersion or suspension comprises, as a steric dispersing agent of at least one mineral material, at least one copolymer comprising at least one vinylic monomer, at least one non-ionic monomer, or a mixture of several monomers having formula (I) in the present method, wherein said agent limits the presence of divalent ions in the aqueous phase and said agent is not a chelating agent.12-16-2010
20110251307USE OF A STYRENE LATEX 100 NM IN SIZE AS A RHEOLOGICAL AGENT IN A PAPER COATING, THE PAPER COATING, AND THE METHOD FOR OBTAINING IT - The invention relates to coating slip including latex comprising styrene and with a particle size centered around 100 nm, the use of latex as an agent for reducing the low shear gradient viscosity and increasing the low shear gradient viscosity, and methods thereof.10-13-2011
20110305915HYDROXY POLYALKYLENE GLYCOL FUNCTION (METH) ACRYLIC COMB POLYMERS, THEIR USE AS SHEAR-THINNING AGENTS IN COATING DISPERSIONS AND DISPERSIONS CONTAINING THEM - Comb polymers useful in paper coating dispersions.12-15-2011

Patent applications by Francois Dupont, Lyon FR