Abstract: The present invention relates to the technical field of hydraulic compositions, for example concrete and mortar compositions. More specifically, the present patent application relates to additives used in hydraulic compositions, to the compositions containing same, and also to the method for preparing these additives and to the various uses thereof.

Abstract: The present invention relates to novel associative thickeners belonging to the HEUR (Hydrophobically modified Ethoxylated URethane) category and also to intermediate aqueous formulations containing such thickeners and to the final compositions, for example paint, lacquer, varnish or paper coating color compositions.

Abstract: The present invention relates to the novel method for the preparation of a polymer of (meth)acrylic acid in aqueous solution, said polymer having a molecular mass of less than 6,500 g/mol, as measured by SEC, using a compound of copper carbonate type or one of its derivatives and a compound of formula (I): according to which: X represents Na, K or H and R represents an alkyl chain comprising from 1 to 5 carbon atoms.

Abstract: The present invention relates to novel associative thickeners pertaining to the HEUR category (Hydrophobically-modified Ethoxylated URethane), to intermediate aqueous formulations containing such thickeners, and to the final compositions, for example paint, lacquer, varnish or paper coating slip compositions.

Abstract: Hardenable inorganic systems such as cements, plasters, ceramics or liquid silicates, usable for example in the building trade, construction industry or oil drilling industry. The insertion of carbonaceous nanofillers, such as carbon nanotubes, for reinforcing mechanical properties and improving such systems. A method for producing a master mixture including at least one superplasticiser and carbonaceous nanofillers at a mass ratio of between 0.1% and 25%, preferably between 0.2% and 20%, in relation to the total weight of the master mixture, and also to said master mixture thus obtained and to the use thereof in a hardenable inorganic system with a view to producing materials with improved properties. The disclosure applies to the construction industry, the building trade and the oil drilling industry.

Abstract: The present invention relates to a novel method for solvent-free preparation of a polymer of (meth)acrylic acid in solution, said polymer having a molecular weigh of less than 8,000 g/mol and a polydispersity index (PI) of 2 to 5 by radical polymerization.

Abstract: This invention relates to the use, in a foamy aqueous suspension of calcium sulfate hemihydrate, as an agent having the dual function of being a dispersing agent and an anti-defoaming agent, of a comb polymer made up of (meth)acrylic acid, a monomer which is an alcoxy- or hydroxy-polyalkylene glycol, and an ester of (meth)acrylic acid. It also relates to the aqueous suspensions thereby formed, and the plasterboard manufactured from 2 sheets of paper containing a body resulting from the drying of said suspensions.

Abstract: The present invention concerns new associative thickeners of the HEUR type (Hydrophobically modified Ethylene oxide URethane) whose hydrophobic monomer is based on alkyl cyclohexylols. These are new polyurethanes that significantly thicken an aqueous formulation with a low, medium and high shear gradient. The invention also concerns the compositions containing them and their uses in different formulations such as aqueous paints.

Abstract: The present invention relates to new acrylic associative thickening agents which, when polymerized in the presence of particular polyglycerols, ultimately result in an increase of the open time of the paint or of the thick coating in which they are incorporated. By so doing, painters and applicators will have more time to work the paint layers gradually or to correct imperfections such as paint droplets, traces of brushes and filling-knives.

Abstract: Novel copolymers obtained by polymerisation a mixture of monomers comprising: at least one anionic monomer (a) comprising a polymerisable unsaturated function and a carboxylic group; and at least one monomer (b) of formula (I): H2C?C(—R1)-(CH2)p—O—[(EO)n-(PO)m]-H??(I) where [(EO)n-(PO)m] represents a polyalkoxylated chain consisting of ethoxylated units EO and propoxylated units PO, distributed into blocks, alternating or statistical, the molar proportion of the ethoxylated units in the polyalkoxylated chain (n)/(m+n) being greater than or equal to 70% and strictly less than 90%. In addition, hydraulic composition, for example concrete compositions, comprising such copolymers, and the use of said copolymers as water-reducing agents in hydraulic compositions and for increasing the early mechanical strength of a hydraulic composition.

Abstract: The present invention relates to microparticles having a polymeric shell, and also to aqueous dispersions comprising these microparticles. The microparticles having a polymeric shell comprise: a) at least one acrylic copolymer of HASE type; b) at least one solid/liquid phase change material having a phase transition temperature Tf1 of greater than or equal to 20° C.; c) at least one solid/liquid phase change material having a phase transition temperature Tf2 of less than or equal to 30° C., provided that Tf2 is less than Tf1; d) optionally at least one active agent.

Abstract: Hardenable inorganic systems such as cements, plasters, ceramics or liquid silicates, usable for example in the building trade, construction industry or oil drilling industry. The insertion of carbonaceous nanofillers, such as carbon nanotubes, for reinforcing mechanical properties and improving such systems. A method for producing a master mixture including at least one superplasticizer and carbonaceous nanofillers at a mass ratio of between 0.1% and 25%, preferably between 0.2% and 20%, in relation to the total weight of the master mixture, and also to said master mixture thus obtained and to the use thereof in a hardenable inorganic system with a view to producing materials with improved properties. The disclosure applies to the construction industry, the building trade and the oil drilling industry.

Abstract: The present invention relates to a ternary mixture consisting of at least one homopolymer or copolymer of (meth)acrylic acid, partially or completely neutralized with sodium, with potassium, with lithium and/or with an amine, at least one solution of silicate or metasilicate chosen from the group consisting of a sodium silicate of formula Na2O.nSiO2 (with n varying between 1 and 4), sodium metasilicate Na2SiO3, a potassium silicate K2O.nSiO2 (with n varying between 1 and 4), potassium metasilicate K2SiO3 and a mixture of these compounds, and at least one base, as dispersion and/or grinding aid agents of kaolin in aqueous suspension.

Abstract: The present invention relates to the novel method for the preparation of a polymer of (meth)acrylic acid in aqueous solution, said polymer having a molecular mass of less than 6,500 g/mol, as measured by SEC, using a compound of copper carbonate type or one of its derivatives and a compound of formula (I): according to which: X represents Na, K or H and R represents an alkyl chain comprising from 1 to 5 carbon atoms.

Abstract: The present invention relates to a novel method for preparing a (meth)acrylic acid polymer in an aqueous solution, said polymer having a molecular mass lower than 8000 g/mol, for example using copper carbonate and iron sulphate (or the derivatives thereof).

Abstract: The present invention relates to a continuous process for preparing a comb polymer, without organic solvent, by esterification and/or amidification of an acidic homopolymer or copolymer, which consists in performing the esterification and/or amidification of said homopolymer/copolymer by reaction at elevated temperature in the mixing and transportation zone of a tubular reactor, optionally equipped with a water removal system, in the presence of at least one poly(alkylene glycol) in solid or molten form and of an antioxidant, said esterification and/or amidification taking place at a temperature greater than or equal to 170° C.

Abstract: The present invention concerns the use of a specific copolymer to homogenize compositions that include coloring pigments and/or pearlescent pigments and film-forming polymers, as well as the cosmetic compositions containing said copolymer.

Abstract: The invention relates to a novel method for the continuous production of anionic polymers by radical polymerization. The polymers produced by said method have a controlled molecular weight.

Abstract: The present invention relates to a fabric-softening composition, comprising a cationic fabric softening agent and a thickening polyurethane resulting from the condensation: a) of at least one compound of formula (I): R—[(OE)m-(OP)n—(OB)p]—OH ??(I) in which: R is a saturated or unsaturated, linear or branched carbon chain, containing from 17 to 24 carbon atoms, [(OE)m-(OP)n—(OB)p] represents an alkoxyl chain formed from alternating or statistical alkoxyl units, distributed in blocks, chosen from ethoxyl units OE, propoxyl units OP and butoxyl units OB and m, n and p represent, independently of each other, 0 or an integer ranging between 1 and 30, the sum of m, n and p being between 20 and 30, b) of at least one polyol, for example of at least one poly(alkylene glycol) and c) of at least one polyisocyanate.

Abstract: The present invention relates to the use in a sunscreen formulation containing pigment particles as UV-filtering mineral agents, new additives as agents improving the UV-absorbing capacities of said formulations, as well as sunscreen formulations including such agents.