| Patent application number | Description | Published |
|---|
| 20080199419 | Use of Water-Soluble Polymers Which are Obtained by Means of Controlled Radical Polymerisation as an Agent For Improving the Opacity and/or Brightness of Dry Products Containing Same - The invention relates to agents that are used to improve optical properties such as opacity and/or brightness of dry products based on mineral matter containing said agents. More specifically, the invention relates to a method of producing dry products based on mineral matter, in which the agents used to improve the opacity and/or brightness of said dry products take the form of controlled-structure water-soluble polymers which are obtained using a controlled radical polymerisation method employing a particular alkoxyamine as a polymerisation initiator. The invention also relates to the use of aqueous suspensions and/or dispersions of mineral matter containing said polymers for the same purpose. The aforementioned dry products comprise plastics, filled paper, dry films produced by drying a coating slip, dry films produced by drying an aqueous paint formulation or dry films produced by drying an aqueous cosmetic formulation, which contain mineral matter as well as said polymers. | 08-21-2008 |
| 20080203008 | Process for preparation of aqueous suspensions of mineral loads, aqueous suspensions of mineral loads obtained and their uses - The invention concerns a process for the preparation of aqueous suspensions of fluid mineral matter, which are able to be pumped and conveyed by the end user | 08-28-2008 |
| 20090056896 | AQUEOUS DISPERSION OF PRECIPITATED CALCIUM CARBONATE STARTING FROM AT LEAST ONE DISPERSING AGENT COMPRISING A COMPOUND CARRYING FLUORIDE IONS - The object of the invention is the use as a dispersing agent, with a view to dispersing mineral matter containing precipitated calcium carbonate (PCC) in water, of a combination:
| 03-05-2009 |
| 20090111906 | Use of Dispersants to Concentrate Mineral Matter in Water, Dispersions Obtained and Their Uses - The invention consists in the use of dispersing agents, in a process of manufacture of an aqueous dispersion of mineral matter, by:
| 04-30-2009 |
| 20090209692 | DISPERSING AND/ OR GRINDING AID AGENT FOR DISPERSION AND AQUEOUS SUSPENSION OF MINERAL MATERIALS, DISPERSION AND SUSPENSION OBTAINED AND USE THEREOF - The invention relates to the use of at least one polymer containing at least one monomer selected from acrylic acid or methacrylic acid or mixtures thereof and at least one monomer which is the maleic anhydride as a dispersing and/or grinding aid agent in a fabrication process of an aqueous dispersion and/or suspension of mineral materials, wherein the molar ratio r (acrylic acid and/or methacrylic acid:(maleic anhydride) is strictly confined to the range between 2:1 and 0.1:1. | 08-20-2009 |
| 20090298988 | Use of Co-Grinding Agents in a Process to Manufacture Co-Ground Natural and Precipitated Calcium Carbonates, Suspensions and Dry Pigments Obtained and Their Uses - The invention consists in the use, in a process of manufacture of GCC and PCC co-ground in water, of a co-grinding agent characterised in that:
| 12-03-2009 |
| 20090308553 | Method for Treating Mineral Materials Using Amphoteric Polymers, Mineral Materials Thereby Obtained, and their Usage as an Agent for Reducing the Quantity of Colloids in Manufacturing Paper - The invention firstly discloses a new method for treating mineral materials, by means of an amphoteric polymer, to make said mineral materials effective as an agent for reducing the quantity of natural and organic colloids in the process of manufacturing a sheet of paper. | 12-17-2009 |
| 20100076139 | USE AS A RHEOLOGY AGENT IN A FILLED PLASTIC PASTE OF A DRYGROUND CALCIUM CARBONATE WITH A COPOLYMER OF (METH)ACRYLIC ACID WITH AN ALKOXY OR HYDROXY POLYALKYLENEGLYCOL GROUP - The invention resides in the use, as an agent reducing the viscosity of a thermoplastic or thermosetting paste filled with a calcium carbonate, of a calcium carbonate characterised in that it is obtained by dry-grinding, firstly, and in that it is dry-ground in the presence of a grinding aid agent which is a copolymer of (meth)acrylic acid with a monomer containing an alcoxy or hydroxy polyalkyleneglycol group, secondly. The invention also concerns the filled thermoplastic and thermosetting pastes obtained in this manner. | 03-25-2010 |
| 20100298480 | USE OF PHOSPHORIC ACID TO REDUCE THE QUANTITY OF FREE DISPERSING AGENT IN A METHOD FOR CONCENTRATING CALCIUM CARBONATE IN WATER - The invention consists of the use of phosphoric acid, in a method for concentrating an aqueous dispersion or suspension of calcium carbonate in the presence of at least one acrylic dispersing agent, as an agent for reducing the quantity of free dispersing agent, i.e. the fraction of acrylic dispersing agent not adsorbed onto the surface of the particles of the calcium carbonate and present in the aqueous phase. It also pertains to the aqueous dispersions or suspensions of calcium carbonate, exhibiting a reduced quantity of free dispersing agent. | 11-25-2010 |
| 20110033558 | POLYMERS PRODUCED BY USING SULPHUR COMPOUNDS IN THE FORM OF TRANSFER AGENTS FOR CONTROLLED RADICAL POLYMERISATION OF ACRYLIC ACID AND THE USE THEREOF - The invention concerns the polymers obtained by the use of sulphur compounds in a process for controlled radical polymerisation in water of acrylic acid and/or acrylic acid with hydrosoluble monomers. It concerns also their uses as dispersant agents or agents to aid grinding and/or co-grinding of mineral matters in aqueous suspensions, and as dispersant agents incorporated directly in aqueous formulations containing mineral matters. Finally, the invention concerns the formulations of mineral matters obtained in this manner. | 02-10-2011 |
| 20110092629 | USE OF (METH)ACRYLIC POLYMERS IN A METHOD FOR MANUFACTURE OF AN AQUEOUS SUSPENSION OF CALCIUM CARBONATE - A method including first step grinding, in aqueous media of natural calcium carbonate, an acrylic polymer having a molecular weight of between 8,000 g/mole and 15,000 g/mole and a molar content of less than 20% of polymeric chains of molecular weight less than 3,000 g/mole and second, optionally concentrating, leading to an aqueous suspension with an increased slope factor, which improves the opacity of the coated paper produced from such a suspension. | 04-21-2011 |
| 20110160348 | USE OF STRUCTURED WATER-SOLUBLE POLYMERS OBTAINED BY CONTROLLED RADICAL POLYMERIZATION AS A DISPERSANT AND AGENT FOR ASSISTING IN THE GRINDING OF MINERAL MATERIALS - The invention relates to the use, as a dispersant and/or a grinding aid agent for pigments and/or mineral fillers in aqueous suspension, of a water soluble polymer with a controlled structure obtained by a controlled free radical polymerization process putting into practice a particular alkoxyamine as a polymerization initiator. | 06-30-2011 |
