Abstract: A procedure for detecting microorganisms by bioluminescence in an aqueous formulation containing an ASE or HASE-type polymer, which implements at least one step of dilution of the aqueous formulation. This dilution step, and notably the regulation of the dilution factor, allows the bioluminescence technique, up to now ineffective on this type of products, to be implemented. It can henceforth be used on these ASE or HASE-type polymers, but also on products containing them, such as a paper coating, paint, lacquer, varnish or stain.

Abstract: 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). The other objects of the invention reside in the aqueous suspensions or dispersions thereby obtained, and their use in manufacturing paper coatings, which make it possible to obtain improved optical properties in the end product.

Abstract: 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.

Abstract: The invention firstly concerns the use as a compatibilising agent, in a process to manufacture a chlorinated thermoplastic resin filled with a mineral material, of a comb polymer having at least one anionic monomer with ethylenic unsaturation, to which is grafted at least one polyalkylene oxide group. The invention also concerns the chlorinated thermoplastic materials thus obtained, which have an improved compatibility between the filler and the chlorinated thermoplastic resin, whilst reducing the quantity of compatibilising agents as used in the chlorinated and filled thermoplastic materials according to the prior art, where the said compatibilising agents used in the prior art were essentially fatty acids, and more specifically stearic acid or its salts.

Abstract: 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. It also consists in a method for manufacturing a sheet of paper which implements said copolymer, as well as the sheet of paper obtained.

Abstract: The present invention consists in the use, in a process of manufacture of a composition with a water and hydraulic binder base, of a rheological additive characterised in that it is an emulsion of at least one non-cross-linked copolymer, consisting of: a) (meth)acrylic acid, b) alkyl(meth)acrylate having 1 to 25 carbon atoms, c) a monomer of formula R1—(R2O)m—R3, in which: R1 designates a radical containing a polymerisable unsaturated group, R2O designates an alkylene oxide group having 1 to 6 carbon atoms, m is an integer between 20 and 30, preferentially between 23 and 27, and is very preferentially equal to 25, R3 designates a linear or branched alkyl chain having 28 to 33 carbon atoms, preferentially 30 to 33 carbon atoms, and very preferentially having 32 carbon atoms. The invention also concerns the formulations thus obtained.

Abstract: The invention resides in the use in a composition with a hydraulic binder base, 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 compositions with a hydraulic binder base thus obtained.

Abstract: 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. A second object of the invention resides in the mineral materials thereby treated and obtained using the inventive method. The third, fourth, and fifth objects of the invention are the dry powders, aqueous suspensions, and granulated treated mineral materials obtained using the inventive method. A final object of the invention is the usage of said mineral materials treated using the inventive method as an agent for reducing the quantity of natural and organic colloids in the process for manufacturing sheets of paper.

Abstract: An anti-efflorescence agent, its use in a cement matrix, and the matrix obtained.

Abstract: The invention concerns the use of hydrosoluble homopolymers and/or copolymers of acrylic/or methacrylic acid with one or more acrylic, vinyl or allyl monomers as an aid to the grinding of mineral particles in aqueous suspension, providing them by their use particular optical properties. The invention also concerns the said aqueous suspensions and their uses in the fields of paper and paint.

Abstract: 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. Another object of the invention consists in the aqueous dispersions and suspensions of mineral materials thus produced and the use thereof in the fabrication of plastics, paper and paintworks.

Abstract: A first object of the invention consists of a process for manufacturing comb polymers having a principal (meth)acrylic chain and polyoxyalkylated lateral groupings, obtained by drying of a solution containing at least one homopolymer of (meth)acrylic acid and/or at least one copolymer of (meth)acrylic acid with at least one other monomer, followed by functionalisation of the said intermediate dry product by esterification with at least one alcoxy polyoxyalkylene glycol, and/or amidification with at least one alcoxy polyoxyalkylene amine, or ethoxylation with at least one alkylene oxide. The intermediate dry products and the final comb polymers (in the dry state or when they are put into aqueous solution) also constitute objects of the invention. Lastly, formulations containing mineral or organic matter and using the above-mentioned polymers constitute a final object of the invention.

Abstract: 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: of at least one (meth)acrylic acid homopolymer and/or copolymer, and/or at least one phosphate compound, and/or at least one cationic polymer, and of at least one fluoride ion-containing compound. Another object of the invention lies in the aqueous suspensions of mineral matter containing PCC obtained in this manner, and in the dry pigments obtained by drying of the said suspensions. A final object of the invention lies in the use of the above-mentioned suspensions and dry pigments in the manufacture of paper, and notably in the formulation of paper coatings and in the manufacture of paper sheet, in the manufacture of paints, plastics and rubbers.

Abstract: The present invention concerns a process for controlled radical polymerisation of acrylic acid and its salts in a reactive medium constituted solely of water. The invention also concerns homopolymers and copolymers of acrylic acid obtained by the polymerisation process. Finally, the invention concerns the use of the said homopolymers and copolymers of acrylic acid in fields of industry such as the paper field and in particular the coating of paper and the mass-filling of paper, the oil field, or the fields of paint, water treatment, detergency, ceramics, cements or hydraulic binders, public works, inks and varnishes, sizing of textiles or the finishing of leather.

Abstract: 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.

Abstract: The invention concerns the use as a thickening agent, in possibly pigmented aqueous formulations, such as coating formulations such as paints in the aqueous phase such as dispersion paints, varnishes, paper coatings, cosmetic formulations, detergent formulations, textile formulations and drilling muds, of a water-soluble acrylic copolymer consisting of at least one monomer with ethylenic unsaturation and a carboxylic function, at least one non-ionic monomer with ethylenic unsaturation, at least one oxyalkylated monomer with ethylenic unsaturation terminated by a hydrophobic branched and non-aromatic chain with 10 to 24 carbon atoms, and possibly at least one monomer with at least two ethylenic unsaturations. The invention also concerns the possibly pigmented aqueous formulations obtained.

Abstract: The invention concerns a process of grinding of mineral matter in water, in the presence of thickening agents, the stable suspensions of mineral matter ground in water obtained by the process according to the invention, and the use of the said suspensions in aqueous formulations, in particular formulations of linings such as aqueous paints, renderings, inks, coatings, sealants, adhesives, glues, and other aqueous formulations incorporating mineral matter. Finally, the invention concerns the aqueous formulations obtained according to the invention.

Abstract: The present invention relates to the technical sector of the polymerisation of acrylic acid and its salts, more particularly in solution, more particularly by controlled radical method, the use of the corresponding organo-sulphurated transfer agents, the acrylic acid polymers thus obtained, having a very low polydispersity PD (or very low polymolecularity index IP, which is an equivalent term), and their applications in industry.

Abstract: The invention concerns a process of grinding of mineral matter in water, in the presence of binders, the stable suspensions of mineral matter ground in water obtained by the process according to the invention, and the use of the said suspensions in aqueous formulations, in particular lining formulations such as aqueous paints, renderings, inks, coatings, sealants, adhesives, glues, and other aqueous formulations incorporating mineral matter. Finally, the invention concerns the aqueous formulations obtained according to the invention.

Abstract: 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.