Patents Assigned to Coatex
  • PRODUCTION OF PRECIPITATED CALCIUM CARBONATE (PCC)
    Publication number: 20180282172
    Abstract: The invention relates to the use of copolymers obtained by the polymerisation of styrene maleic anhydride, functionalised or not, for producing an aqueous suspension of precipitated calcium carbonate (PCC) by slaking a material containing calcium oxide in water then by carbonation of the milk of lime thus produced.
    Type: Application
    Filed: October 13, 2016
    Publication date: October 4, 2018
    Applicant: COATEX
    Inventor: Christian JACQUEMET
  • PRODUCTION OF PRECIPITATED CALCIUM CARBONATE
    Publication number: 20180273395
    Abstract: The present invention relates to the use of at least one cationic polymer in a method for manufacturing a precipitated calcium carbonate aqueous suspension, in which a milk of lime is prepared by mixing water, a calcium oxide containing material, said at least one cationic polymer, optionally at least one slaking additive, said milk of lime being them carbonated to form a precipitated calcium carbonate aqueous suspension.
    Type: Application
    Filed: February 24, 2016
    Publication date: September 27, 2018
    Applicant: COATEX
    Inventor: Christian JACQUEMET
  • Poly(ethylene glycol) geminal ester phosphate, use as additive in hydraulic compositions and compositions containing same
    Patent number: 10065889
    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.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: September 4, 2018
    Assignee: COATEX
    Inventors: David Platel, Jean-Marc Suau
  • THICKENING AGENT FOR AQUEOUS SYSTEMS, FORMULATIONS CONTAINING SAME AND USES
    Publication number: 20180244829
    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.
    Type: Application
    Filed: September 29, 2016
    Publication date: August 30, 2018
    Applicant: COATEX
    Inventors: Denis RUHLMANN, Jean-Marc SUAU, Yves MATTER, Catherine CORFIAS ZUCCALLI
  • Method for the polymerisation of (meth)acrylic acid in solution
    Patent number: 10053525
    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.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: August 21, 2018
    Assignee: COATEX
    Inventors: Jean-Marc Suau, Clementine Champagne
  • THICKENING AGENT FOR AQUEOUS SYSTEMS, FORMULATIONS CONTAINING SAME AND USES THEREOF
    Publication number: 20180215856
    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.
    Type: Application
    Filed: August 3, 2016
    Publication date: August 2, 2018
    Applicant: COATEX
    Inventors: Denis RUHLMANN, Catherine CORFIAS ZUCCALLI, Jean-Marc SUAU, Yves MATTER, Benoit MAGNY
  • PRODUCTION OF PRECIPITATED CALCIUM CARBONATE
    Publication number: 20180170765
    Abstract: The present invention relates to the use of a depolymerized carboxylated cellulose solution for preparing an aqueous Precipitated Calcium Carbonate (PCC) slurry by slaking a material containing calcium oxide in water, followed by carbonation of the milk of lime thus obtained. The depolymerized carboxylated cellulose solution has a solid content of 25 wt. % to 40 wt. %, based on the total weight of the solution and a molecular weight of between 10 000 g/mol to 40 000 g/mol.
    Type: Application
    Filed: June 30, 2016
    Publication date: June 21, 2018
    Applicant: COATEX
    Inventor: Christian JACQUEMET
  • Production of PCC
    Patent number: 10000388
    Abstract: The present invention is directed to a process for producing an aqueous suspension of precipitated calcium carbonate, wherein a milk of lime is prepared by mixing water, a calcium oxide containing material, at least one water-soluble polymer having a molecular weight Mw in the range from 200 to 6500 g/mol, and at least one slaking additive, and subsequently, the milk of lime is carbonated to form an aqueous suspension of precipitated calcium carbonate.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: June 19, 2018
    Assignees: Omya International AG, Coatex
    Inventors: Marc Maurer, Christian Jacquemet, Mathieu Skrzypczak
  • Method for polymerizing meth(acrylic) acid in a solution, polymer solutions obtained and uses thereof
    Patent number: 9957338
    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.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: May 1, 2018
    Assignee: COATEX
    Inventor: Jean-Marc Suau
  • (Meth)acrylic comb polymer containing a (meth)acrylic ester as a dispersing and anti-defoaming agent in an aqueous suspension of calcium sulfate hemihydrate
    Patent number: 9950956
    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.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: April 24, 2018
    Assignee: COATEX
    Inventors: Jean-Marc Suau, Yves Kensicher
  • METHOD FOR DEINKING RECYCLED PAPER
    Publication number: 20180105983
    Abstract: A method for deinking recycled paper, including a pulping step, and then a flotation step, which includes introduction of at least one dispersant of the polyacrylate type, representing from 0.05 to 3.5 wt % of the mineral fillers of the recycled paper. A specific dispersant is used during the flotation step of the method for deinking recycled paper.
    Type: Application
    Filed: May 30, 2016
    Publication date: April 19, 2018
    Applicant: COATEX
    Inventors: Francois DUPONT, Jerome BLANC
  • Non-ionic associative thickeners containing cyclohexylol alkyls, formulations containing them and their uses
    Patent number: 9896533
    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.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: February 20, 2018
    Assignee: COATEX
    Inventors: Jean-Marc Suau, Denis Ruhlmann
  • Associative acrylic thickening agent containing polyglycerols and its use to increase the open time of thin or thick films
    Patent number: 9884968
    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.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: February 6, 2018
    Assignee: COATEX
    Inventors: Denis Ruhlmann, Jean-Marc Suau
  • NOVEL COPOLYMER AS A WATER-REDUCING AGENT IN A HYDRAULIC COMPOSITION AND USE OF COPOLYMERS FOR IMPROVING THE EARLY MECHANICAL STRENGTH OF A HYDRAULIC COMPOSITION
    Publication number: 20180002231
    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.
    Type: Application
    Filed: September 15, 2017
    Publication date: January 4, 2018
    Applicant: COATEX
    Inventors: David PLATEL, Benoit MAGNY, Jean-Marc SUAU, Clementine CHAMPAGNE
  • POLYMERIC MICROPARTICLES
    Publication number: 20170368524
    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.
    Type: Application
    Filed: February 17, 2016
    Publication date: December 28, 2017
    Applicant: COATEX
    Inventors: Clementine CHAMPAGNE, Jean-Marc SUAU
  • THICKENING AGENT FOR AQUEOUS SYSTEMS, FORMULATIONS CONTAINING SAME AND USES THEREOF
    Publication number: 20170369717
    Abstract: The present invention relates to novel associative thickeners belonging to the category of the HEUR (Hydrophobically modified Ethoxylated URethanes), and also intermediate aqueous formulations containing such thickeners, and the final compositions, for example paint, lacquer, varnish or paper coating colour compositions.
    Type: Application
    Filed: December 18, 2015
    Publication date: December 28, 2017
    Applicant: COATEX
    Inventor: Denis RUHLMANN
  • 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
    Patent number: 9850374
    Abstract: 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.
    Type: Grant
    Filed: October 9, 2014
    Date of Patent: December 26, 2017
    Assignee: COATEX
    Inventors: David Platel, Jean Moro, Olivier Guerret
  • DISPERSION AND/OR GRINDING AID AGENTS OF KAOLIN IN AQUEOUS SUSPENSION, AQUEOUS SUSPENSIONS OBTAINED AND USES THEREOF
    Publication number: 20170355856
    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.
    Type: Application
    Filed: December 1, 2015
    Publication date: December 14, 2017
    Applicant: COATEX
    Inventors: Jacques MONGOIN, Christian JACQUEMET, Yves MATTER, Jean-Marc SUAU
  • METHOD FOR THE POLYMERISATION OF (METH)ACRYLIC ACID IN SOLUTION
    Publication number: 20170349681
    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.
    Type: Application
    Filed: October 12, 2015
    Publication date: December 7, 2017
    Applicant: COATEX
    Inventors: Jean-Marc SUAU, Clementine CHAMPAGNE
  • Method for solution-polymerising (meth)acrylic acid
    Patent number: 9803038
    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).
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: October 31, 2017
    Assignee: COATEX
    Inventor: Jean-Marc Suau