Coatex S.a.s.

Coatex

Jean Moro

Olivier Guerret

Jean-Marc Suau

David Platel

Yves Kensicher

The present invention pertains to the use, in the manufacture of an aqueous formulation with a hydraulic binder base, of a combination of at least one comb-branched copolymer having a (meth)acrylic skeleton, onto which are grafted side-chains terminated by a hydrophilic group, and at least one ASE acrylic polymer. This results in improving the workability of said formulation, without causing a segregation phenomenon.

Use as an agent improving the workability of an aqueous formulation with a hydraulic binder base, of a (meth)acrylic comb-branched copolymer and an associative acrylic thickener

The present invention relates to processes 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 intermediate dry product by esterification with at least one alkoxy polyoxyalkylene glycol, and/or amidification with at least one alkoxy polyoxyalkylene amine, or ethoxylation with at least one alkylene oxide.

Method for making comb polymers by drying then functionalization of the meth(acrylic)polymer backbone, resulting polymers and uses thereof

The invention pertains to improving the workability of an aqueous formulation with a hydraulic binder base using a combination between at least one comb-branched copolymer having a (meth)acrylic skeleton, onto which are grafted side-chains terminated by a hydrophilic group, and at least one comb-branched copolymer having a (meth)acrylic skeleton, onto which are grafted side-chains terminated by a hydrophobic group.

Workability of an aqueous formulation with a hydraulic binder base using a combination of comb-branched polymers

The invention consists of a method for manufacturing an aqueous formulation containing at least one oil, and comprising the steps of mixing at least one associative polymer, one oil, and water, encapsulating the oil by increasing the pH to a value greater than 8, potentially precipitating the mixture by reducing the pH to a value less than 6, and potentially isolating the resulting particles by removing the water. The aqueous formulations, as with the aqueous dispersions, and the resulting solid particles constitute other objects of the invention.

Method for encapsulating oils in an aqueous medium with hase polymer emulsions, products obtained, and uses thereof

The invention resides in a method for manufacturing a metallic hydroxide-based and metallic oxide-based powder, which is self-dispersing in water, characterized in that a metallic oxide powder is partially treated with a polymer in the form of an aqueous emulsion and/or solution, in such a way that the level of metallic hydroxide by dry weight within said treated powder is less than 99% of its total weight, and in that said polymer is a water-soluble homopolymer or copolymer containing at least one vinylic monomer. In one particular variant, the polymer is a water-soluble copolymer containing a vinylic monomer and a non-ionic monomer, and the metal is calcium and/or magnesium. The invention also pertains to the powders obtained, their uses in aqueous suspensions, in treating waste, as a chemical additive, or as a soil amendment.

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Saint Didier de Formans, France

Jean Moro