Patents Assigned to Chryso
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Patent number: 9546111Abstract: The invention relates mainly to a polymer comprising a hydrocarbon-based main chain bearing carboxylic groups and polyalkoxylated chains and up to 4% by weight of anti-oxidant groups, relative to the weight of the final polymer, grafted to the main chain. It also relates to a method for preparing such a polymer and to an admixture which is of use as a plasticizer of suspensions of mineral particles comprising same. Finally, it is related to the use of such a polymer for fluidifying suspensions of mineral particles and reducing the water demand of hydraulic compositions.Type: GrantFiled: August 9, 2012Date of Patent: January 17, 2017Assignee: CHRYSOInventors: Alexandre Desseroir, Philippe Maitrasse, Marc Lemaire, Florence Popowycz, Pierre Labourt-Ibarre
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Patent number: 9371424Abstract: The invention relates to a copolymer comprising a main hydrocarbon chain and side groups including carboxylic groups, polyoxyalkylate groups, and gem acetophosphonate groups, an adjuvant for suspensions of mineral particles comprising said copolymer and a method for preparing said copolymer. Finally it also relates to the use of said copolymer for fluidifying and maintaining fluidity of suspensions of mineral particles and for reducing the sensitivity of hydraulic binders to clays and alkali metal sulfates. Finally it relates to a composition of mineral particles comprising this copolymer.Type: GrantFiled: September 26, 2013Date of Patent: June 21, 2016Assignee: CHRYSOInventors: Kamel Chougrani, Frédéric Leising
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Patent number: 9181127Abstract: A method for inerting clays in a hydraulic composition includes one step of putting a hydraulic composition or a constituent of a hydraulic composition in contact with a compound of the formula (I) R—COO31, (Mn+)1/n, wherein a method for making hydraulic composition, a pretreated granulate which may be obtained by mixing a granulate with the compound of formula (I), and an additive for inerting clays including a superplasticizer and the compound of formula (I) are described.Type: GrantFiled: November 30, 2010Date of Patent: November 10, 2015Assignee: CHRYSOInventor: Frederic Leising
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Publication number: 20150191398Abstract: The present invention relates to a method for creating patterns on a surface of the hydraulic binder composition comprising the deposition on the surface of the fresh hydraulic binder composition of a stencil and then application of a deactivating composition (A) on the thereby covered surface.Type: ApplicationFiled: July 3, 2013Publication date: July 9, 2015Applicant: CHRYSOInventors: Philippe Pucel, Amélie Burleraux, Isabelle Nieuweboer-Maignan
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Publication number: 20150175752Abstract: The invention relates to a copolymer comprising a main hydrocarbon chain and side groups including carboxylic groups and polyoxyalkylate groups, characterized in that it further includes gem acetophosphonate groups, an adjuvant for suspensions of mineral particles comprising said copolymer and a method for preparing said copolymer. Finally it also relates to the use of said copolymer for fluidifying and maintaining fluidity of suspensions of mineral particles and for reducing the sensitivity of hydraulic binders to clays and alkaline sulfates. Finally it relates to a composition of mineral particles comprising this copolymer.Type: ApplicationFiled: September 26, 2013Publication date: June 25, 2015Applicant: CHRYSOInventors: Kamel Chougrani, Frédéric Leising
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Publication number: 20150148455Abstract: The invention relates mainly to a polymer comprising a hydrocarbon-based main chain bearing carboxylic groups and polyalkoxylated chains and up to 4% by weight of anti-oxidant groups, relative to the weight of the final polymer, grafted to the main chain. It also relates to a method for preparing such a polymer and to an admixture which is of use as a plasticizer of suspensions of mineral particles comprising same. Finally, it is related to the use of such a polymer for fluidifying suspensions of mineral particles and reducing the water demand of hydraulic compositions.Type: ApplicationFiled: August 9, 2012Publication date: May 28, 2015Applicant: CHRYSOInventors: Alexandre Desseroir, Philippe Maitrasse, Marc Lemaire, Florence Popowycz, PIERRE Labourt-Ibarre
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Patent number: 9023151Abstract: The present invention is mainly aimed at a set-accelerating admixture for hydraulic compositions comprising, in an aqueous solution, the reaction product of an alkanolamine with a concentrated strong acid; sulfate anions; and alkali or alkaline earth cations; having a pH comprised between 5 and 12. Moreover it is directed to a method for its preparation as well as to a method for preparing hydraulic compositions comprising the step for adding such an admixture to the hydraulic binder, before, during or after the grinding.Type: GrantFiled: February 6, 2013Date of Patent: May 5, 2015Assignee: ChrysoInventors: Bruno Pellerin, David Babayan, Frédéric Rudolph
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Patent number: 9012589Abstract: The invention relates to a compound of following formula (I): the preparation method thereof and the use of same.Type: GrantFiled: March 31, 2010Date of Patent: April 21, 2015Assignee: ChrysoInventors: Philippe Maitrasse, Bruno Pellerin, Frederic Leising, Loic Lemiegre, Nicolas Noiret, Nathanael Olivi
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Publication number: 20140039098Abstract: The invention relates to a copolymer comprising a main hydrocarbon chain and side groups including carboxylic groups and polyoxyalkylate groups, characterized in that it further includes gem-bisphosphonate groups, an admixture for suspensions of mineral particles comprising said copolymer and to a method for preparing said copolymer. Finally it relates to the use of said copolymer for fluidifying and maintaining fluid, suspensions of mineral particles and for reducing the sensitivity of hydraulic compositions to clays and alkaline sulfates. Finally it relates to a composition of mineral particles comprising this copolymer.Type: ApplicationFiled: April 13, 2012Publication date: February 6, 2014Applicant: CHRYSOInventors: Kamel Chougrani, Frédéric Leising
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Publication number: 20130303663Abstract: The invention relates to a polymer comprising the following units: and the side chains comprising R2 groups, to its preparation methods and to its uses as a thinner in hydraulic compositions.Type: ApplicationFiled: December 20, 2011Publication date: November 14, 2013Applicant: CHRYSOInventors: Mathias Agnely, Pascal Boustingorry, Kamel Chougrani
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Patent number: 8563631Abstract: The invention mainly relates to the use of a (co)polymer having a main chain essentially consisting of (meth)acrylic units and polyoxyalkylated side-chains containing statistically-distributed hydrophobic units as an adjuvant for lowering the viscosity of hydraulic compositions.Type: GrantFiled: March 31, 2010Date of Patent: October 22, 2013Assignees: Lafarge, ChrysoInventors: David Rinaldi, Horacio Naranjo, Martin Mosquet, Philippe Maitrasse, Alexandre Desseroir
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Publication number: 20130214448Abstract: The invention relates to an emulsion consisting of an oily phase dispersed in an aqueous phase, comprising a non-quaternary amine surfactant and an acid with a set-retarding effect as well as to a method for its preparation. Moreover, it relates to a method for surface retarding of a hydraulic composition, comprising the steps of: (a) shaping the hydraulic composition; (b) applying onto the surface of the hydraulic composition, the emulsion according to the invention, which by breaking releases the oily phase; and (c) after hardening of the hydraulic composition, removing the film formed with the non-hardened hydraulic composition surface layer.Type: ApplicationFiled: October 25, 2011Publication date: August 22, 2013Applicant: CHRYSOInventors: Bruno Pellerin, Sandrine Mateo, Sophie Lachenaud
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Patent number: 8481617Abstract: The present invention relates to a system of adjuvants for concrete comprising a superplasticizer, such as a polyalkoxylated polycarboxylate comb polymer; an accelerator selected from calcium salts; and a rheology extender, which is a polyalkoxylated polyphosphonate. The system of adjuvants is particularly useful for prefabricated concrete, which is used for producing concrete building elements in series such as slabs, walls, beams, frontage panels. Methods for preparing prefabricated concrete using this system of adjuvants are also provided.Type: GrantFiled: March 12, 2010Date of Patent: July 9, 2013Assignee: ChrysoInventors: Jerome Seurre, Bruno Pellerin, Jean-Philippe Bigas
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Publication number: 20130074740Abstract: A method for inerting clays in a hydraulic composition includes one step of putting a hydraulic composition or a constituent of a hydraulic composition in contact with a compound of the following formula (I): R—COO?, (Mn+)1/n??(I), A hydraulic composition including the compound of formula (I), a method for preparing the hydraulic composition, a pretreated granulate which may be obtained by mixing a granulate with the compound of formula (I), and an additive for inerting clays including a superplasticizer and the compound of formula (I) are also described.Type: ApplicationFiled: November 30, 2010Publication date: March 28, 2013Applicant: CHRYSOInventor: Frederic Leising
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Patent number: 8366825Abstract: The invention concerns a fast binder comprising; cement; at least one superplasticizer; calcium nitrite; and at least one formic derivative. The invention also concerns concrete mixtures obtained from said binder and methods for making same.Type: GrantFiled: June 9, 2006Date of Patent: February 5, 2013Assignees: Chryso, LafargeInventors: Serge Sabio, Bruno Pellerin, Christophe Levy, Serge Ghilardi
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Patent number: 8361221Abstract: The invention relates to an additive for reducing Cr(VI) ions to Cr(III) ions, comprising a complex of tin(II) and a carboxylic acid or a salt thereof, and to the process for the preparation thereof. It also relates to a process for preparing a material having a low chromium(VI) content. Finally, it relates to the use of said additive for reducing chromium(VI) ions to chromium(III) ions.Type: GrantFiled: July 6, 2009Date of Patent: January 29, 2013Assignee: ChrysoInventors: Pierre-Antoine Andreani, Bruno Pellerin, Karen Ayme
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Publication number: 20120186495Abstract: The invention relates to an anti-filming surface adjuvant for hydraulic binders comprising at least one fat and at least one anti-caking agent, to its preparation method as well as to a method for preparing a hydraulic binder composition suitable for making screeds or self-compacting concretes (SCC) including the step consisting of adding to the hydraulic binder the adjuvant according to the invention at a dosage comprised between 50 and 1,500 g/m3 of screed or of concrete.Type: ApplicationFiled: August 6, 2010Publication date: July 26, 2012Applicant: CHRYSOInventors: Sandrine Mateo, Pascal Boustingorry, Bruno Pellerin, David Sedan
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Publication number: 20120073475Abstract: The invention relates to a compound of following formula (I): the preparation method thereof and the use of same.Type: ApplicationFiled: March 31, 2010Publication date: March 29, 2012Applicant: CHRYSOInventors: Philippe Maitrasse, Bruno Pellerin, Frederic Leising
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Publication number: 20120077940Abstract: The invention chiefly concerns a method for preparing polyalkoxylated polycarboxylates in which the following are caused to react in the presence of water and a catalyst at a temperature of between 120 and 250° C.: at least one polycarboxylic acid obtained by polymerization of at least one unsaturated carboxylic acid; and at least one polyether carrying a free hydroxyl group capable of reacting with a carboxylic function of the said polycarboxylic acid, characterized in that the catalyst is an alkaline or alkaline-earth salt of a strong protic acid.Type: ApplicationFiled: March 30, 2010Publication date: March 29, 2012Applicant: ChrysoInventors: Alexandre Desseroir, Philippe Maitrasse
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Publication number: 20120059090Abstract: The invention proposes an adjuvant system for a concrete comprising as a combination: (a) a superplasticizer (b) an accelerator; and (c) a rheology extender. A method for preparing prefabricated concrete is also proposed, comprising the step of adding in a suitable amount, respectively: (a) a superplasticizer; (b) an accelerator and (c) a rheology extender, simultaneously or successively to the concrete slurry. Finally the use of such a system for preparing prefabricated concretes is proposed.Type: ApplicationFiled: March 12, 2010Publication date: March 8, 2012Applicant: CHRYSOInventors: Jerome Seurre, Bruno Pellerin, Jean-Philippe Bigas