Patents by Inventor Sandra Grimaldi
Sandra Grimaldi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9035002Abstract: The invention relates to free-radical polymerization and free-radical cross-linking and more particularly provides a process of free-radical polymerization or cross-linking wherein at least one polymerizable monomer or at least one compound to be cross-linked is contacted in the presence of at least one selected organic peroxides, characterized in that the organic peroxide is prepared continuously by an ex situ process with the aid of a closed plate exchanger. In the process according to the invention, it's possible to introduce the above selected organic peroxide continuously during the polymerization or cross-linking reaction.Type: GrantFiled: April 27, 2007Date of Patent: May 19, 2015Assignee: Arkema FranceInventors: Sandra Grimaldi, Jean-Marc Corpart
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Patent number: 8916142Abstract: The invention relates to a supramolecular polymer obtained from the reaction of (i) an amine bearing a nitrogen-containing heterocyclic group: imidazolidone, trimethyleneurea or triazine, which is capable of associating by means of hydrogen bonds and (ii) at least one fatty acid monomer comprising at least one reactive function, a dimer of identical or different fatty acids and/or a trimer of identical or different fatty acids, or a derivative of said fatty acid(s) which is selected from a fatty acid ester, and a fatty acid chloride.Type: GrantFiled: September 7, 2007Date of Patent: December 23, 2014Assignees: Arkema France, Centre National de la Recherche Scientifique (CNRS)Inventors: Sandra Grimaldi, Jean-Philippe Gillet, Manuel Hidalgo, Francois-Genes Tournilhac, Philippe Cordier, Ludwik Leibler
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Patent number: 8609765Abstract: A polymeric material from the styrene family comprises macromolecular chains grafted by nitrogen-containing heterocyclic groups; wherein the macromolecular chains comprise a polymeric backbone to which a grafted agent is attached by at least one covalent bond, the grafting agent comprises, in a single molecule, one or more associative groups capable of being bound by hydrogen bonds, and one or more reactive groups capable of forming covalent bonds with the polymeric backbone, at least one of the associative groups of the modifier is an imidazolidone heterocyclic ring. The mean number of imidazolidone groups to be inserted into the macromolecular chains is dependent both on the mean mass of said chains and on the final properties to be imparted to the material. Objects such as tubes, films, plates, stiffeners, bottles and containers can be made.Type: GrantFiled: July 3, 2012Date of Patent: December 17, 2013Assignees: Arkema France, Centre National de la Recherche Scientifique (CNRS)Inventors: Nicolas Dufaure, Sandra Grimaldi, Manuel Hidalgo, Ludwik Leibler, Francois-Genes Tournilhac
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Patent number: 8492495Abstract: The present invention relates to a salified copolymer that can be obtained by salification, in an aqueous medium, using at least one amine containing at least one nitrogenous heterocyclic group, of a copolymer obtained from at least one cyclic anhydride-based or carboxylic acid-based monomer and from at least one styrene-based monomer, such as a styrene/maleic anhydride (SMA) copolymer. It also relates to the process for producing this salified copolymer, to a composition containing same, and also to the use of this composition for surface-treating, in particular coating, sizing and finishing, paper or cardboard.Type: GrantFiled: December 9, 2008Date of Patent: July 23, 2013Assignee: Arkema FranceInventors: Manuel Hidalgo, Sandra Grimaldi
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Publication number: 20130005914Abstract: A polymeric material from the styrene family comprises macromolecular chains grafted by nitrogen-containing heterocyclic groups; wherein the macromolecular chains comprise a polymeric backbone to which a grafted agent is attached by at least one covalent bond, the grafting agent comprises, in a single molecule, one or more associative groups capable of being bound by hydrogen bonds, and one or more reactive groups capable of forming covalent bonds with the polymeric backbone, at least one of the associative groups of the modifier is an imidazolidone heterocyclic ring. The mean number of imidazolidone groups to be inserted into the macromolecular chains is dependent both on the mean mass of said chains and on the final properties to be imparted to the material. Objects such as tubes, films, plates, stiffenerss, bottles and containers can be made.Type: ApplicationFiled: July 3, 2012Publication date: January 3, 2013Applicants: Centre National De La Recherche Scientifique (CNRS), Arkema FranceInventors: Nicolas DUFAURE, Sandra GRIMALDI, Manuel HIDALGO, Ludwik LEIBLER, Francois-Genes TOURNILHAC
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Patent number: 8242207Abstract: A polymeric material from the styrene family, consisting of macromolecular chains grafted by nitrogen-containing heterocyclic groups; wherein the macromolecular chains consist of a polymeric backbone to which a grafted agent is attached by at least one covalent bond, the grafting agent comprises, in a single molecule, one or more associative groups capable of being bound by hydrogen bonds, and one or more reactive groups capable of forming covalent bonds with the polymeric backbone, at least one of the associative groups of the modifier is an imidazolidone heterocyclic ring. The polymeric material of the invention can also be blended with other materials such as other polymers, and can thus be modified by elastomeric phases that enhance the impact strength thereof.Type: GrantFiled: February 1, 2008Date of Patent: August 14, 2012Assignees: Arkema France, Centre National de la Recherche ScientifiqueInventors: Nicolas Dufaure, Sandra Grimaldi, Manuel Hidalgo, Ludwik Leibler, Francois-Genes Tournilhac
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Publication number: 20120136095Abstract: The subject of the invention is the use of a grafted copolymer derived from the grafting: of an SMA copolymer (II) derived from the copolymerization of at least two monomers, (i) the first monomer being chosen from styrene and its derivatives and (ii) the second monomer including at least one anhydride function, with (iii) M-R-X molecules (I) including at least one pattern (M) chosen from patterns (1) to (4): formula (I), with A=oxygen, sulfur or NH; and including at least one chemical function (X) chosen from among halogen, a primary or secondary amine function, an alcohol function, a thiol function, a carboxylic acid function or a derivative of said function and an epoxy function, the pattern (M) and said function (X) being connected by a rigid or flexible chain (R); used as the majority composition or additive of liquid compositions intended to be applied in or on sheets of paper or cardboard, onto hard surfaces, on leather or on textiles.Type: ApplicationFiled: January 31, 2012Publication date: May 31, 2012Applicant: Arkema FranceInventors: Manuel HIDALGO, Sandra GRIMALDI
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Patent number: 8133944Abstract: The invention includes a grafted copolymer derived from the grafting: of an SMA copolymer (II) derived from the copolymerization of at least two monomers, (i) the first monomer chosen from styrene and its derivatives and (ii) the second monomer including at least one anhydride functional group, with molecules belonging to the family of triazoles; used as the majority composition or additive of liquid compositions intended to be applied in or on sheets of paper or cardboard, onto hard surfaces, on leather or on textiles.Type: GrantFiled: June 23, 2008Date of Patent: March 13, 2012Assignee: Arkema FranceInventors: Manuel Hidalgo, Sandra Grimaldi
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Patent number: 8088942Abstract: The present invention relates to a process for the continuous preparation of selected organic peroxides using plate exchangers having a high heat exchange capacity.Type: GrantFiled: April 27, 2007Date of Patent: January 3, 2012Assignee: Arkema FranceInventors: Jean-Marc Corpart, Sandra Grimaldi, Georges Martino-Gauchi, Philippe Maj
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Publication number: 20100273965Abstract: The present invention relates to a salified copolymer that can be obtained by salification, in an aqueous medium, using at least one amine containing at least one nitrogenous heterocyclic group, of a copolymer obtained from at least one cyclic anhydride-based or carboxylic acid-based monomer and from at least one styrene-based monomer, such as a styrene/maleic anhydride (SMA) copolymer. It also relates to the process for producing this salified copolymer, to a composition containing same, and also to the use of this composition for surface-treating, in particular coating, sizing and finishing, paper or cardboard.Type: ApplicationFiled: December 9, 2008Publication date: October 28, 2010Applicant: Arkema FranceInventors: Manuel Hidalgo, Sandra Grimaldi
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Publication number: 20100249281Abstract: The subject of the invention is the use of a grafted copolymer derived from the grafting: —of an SMA copolymer (II) derived from the copolymerization of at least two monomers, (i) the first monomer being chosen from styrene and its derivatives and (ii) the second monomer including at least one anhydride function, —with either (iii) M-R—X molecules (I) including at least one pattern (M) chosen from patterns (1) to (4): formula (I), with A=oxygen, sulfur or NH; and including at least one chemical function (X) chosen from among halogen, a primary or secondary amine function, an alcohol function, a thiol function, a carboxylic acid function or a derivative of said function and an epoxy function, the pattern (M) and said function (X) being connected by a rigid or flexible chain (R); namely (iv) molecules belonging to the family of triazoles; used as the majority composition or additive of liquid compositions intended to be applied in or on sheets of paper or cardboard, onto hard surfaces, on leather or on textilesType: ApplicationFiled: June 23, 2008Publication date: September 30, 2010Inventors: Manuel Hidalgo, Sandra Grimaldi
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Publication number: 20100135940Abstract: The invention relates to a supramolecular polymer derived from the reaction between (i) an amine bearing a nitrogen-containing heterocyclic group: imidazolidone, trimethyleneurea or triazine, capable of joining together via hydrogen bonds with (ii) at least one fatty acid monomer comprising at least one reactive functional group, a dimer of identical or different fatty acids and/or a trimer of identical or different fatty acids, or a derivative of said fatty acid(s) chosen from a fatty acid ester, and a fatty acid chloride.Type: ApplicationFiled: September 7, 2007Publication date: June 3, 2010Applicant: Arkema FranceInventors: Sandra Grimaldi, Jean-Philippe Gillet, Manuel Hidalgo, Francois-Genes Tournilhac, Philippe Cordier, Ludwik Leibler
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Publication number: 20100120983Abstract: A polymeric material from the styrene family, consisting of macromolecular chains grafted by nitrogen-containing heterocyclic groups; wherein the macromolecular chains consist of a polymeric backbone to which a grafted agent is attached by at least one covalent bond, the grafting agent comprises, in a single molecule, one or more associative groups capable of being bound by hydrogen bonds, and one or more reactive groups capable of forming covalent bonds with the polymeric backbone, at least one of the associative groups of the modifier is an imidazolidone heterocyclic ring. The mean number of imidazolidone groups to be inserted into the macromolecular chains is dependent both on the mean mass of said chains and on the final properties to be imparted to the material. The polymeric material of the invention can be extruded, coextruded, injected, blow-moulded, moulded, overmoulded, calendered or thermoformed. Objects such as tubes, films, plates, stiffenerss, bottles and containers can be made.Type: ApplicationFiled: February 1, 2008Publication date: May 13, 2010Applicants: Arkema France, Centre National De La Recherche Scientifique (CNRSInventors: Nicolas Dufaure, Sandra Grimaldi, Manuel Hidalgo, Ludwik Leibler, Francois-Genes Tournilhac
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Publication number: 20090182162Abstract: The present invention relates to a process for the continuous preparation of selected organic peroxides using plate exchangers having a high heat exchange capacity.Type: ApplicationFiled: April 27, 2007Publication date: July 16, 2009Applicant: Arkema FranceInventors: Jean-Marc Corpart, Sandra Grimaldi, Georges Martino-Gauchi, Philippe Maj
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Publication number: 20090076234Abstract: The invention relates to free-radical polymerization and free-radical cross-linking and more particularly provides a process of free-radical polymerization or cross-linking wherein at least one polymerizable monomer or at least one compound to be cross-linked is contacted in the presence of at least one selected organic peroxides, characterized in that the organic peroxide is prepared continuously by an ex situ process with the aid of a closed plate exchanger. In the process according to the invention, it's possible to introduce the above selected organic peroxide continuously during the polymerization or cross-linking reaction.Type: ApplicationFiled: April 27, 2007Publication date: March 19, 2009Applicant: Arkema FranceInventors: Sandra Grimaldi, Jean-Marc Corpart
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Patent number: 7439384Abstract: The present invention relates to a process for the preparation of a peroxyester which can be used in particular in polymerizations, such as the polymerization of vinyl chloride, or in the thermosetting of polyester resins. This process comprises the reaction of a hydroxyhydroperoxide salt with an acid halide or an acid anhydride under the following conditions: the molar ratio Rb of the hydroxyhydroperoxide corresponding to the hydroxyhydroperoxide salt to the acid halide is between 0.5 and 1.5; or alternatively the molar ratio Rb? of the hydroxyhydroperoxide corresponding to the hydroxyhydroperoxide salt to the acid anhydride is between 1.0 and 3.0; the hydroxyhydroperoxide salt was prepared beforehand by reaction of the corresponding hydroxyhydroperoxide with a base according to a molar ratio Ra of the base to the hydroxyhydroperoxide of between 0.5 and 1.5; and this process is carried out in aqueous media.Type: GrantFiled: February 7, 2002Date of Patent: October 21, 2008Assignee: ATOFINAInventors: Sandra Grimaldi, Gurusamy Jeyaraj
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Patent number: 6992225Abstract: The invention concerns a heat stabilizer of organic peroxides characterized in that it is an N-hetrocyclic compound which contains at least one nitroxyl radical with the N atom of the nitroxyl radical forming part of the ring. The invention also concerns a storage-stable and heat-stable organic peroxide composition containing an N-hetrocyclic compound which contains at least one nitroxyl radical with the N atom of the nitroxyl radical forming part of the ring, the method for preparing the same and uses thereof for modifying polymers.Type: GrantFiled: April 30, 2002Date of Patent: January 31, 2006Assignee: ArkemaInventors: Sandra Grimaldi, Olivier Guerret, Jean-Luc Couturier, Fabien Debaud
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Publication number: 20040176632Abstract: The present invention relates to a process for the preparation of a peroxyester which can be used in particular in polymerizations, such as the polymerization of vinyl chloride, or in the thermosetting of polyester resins.Type: ApplicationFiled: April 16, 2004Publication date: September 9, 2004Inventors: Sandra Grimaldi, Gurusamy Jeyaraj
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Publication number: 20040138081Abstract: The invention concerns a heat stabilizer of organic peroxides characterized in that it contains at least a nitroxyl radical in its molecule. The invention also concerns a storage-stable and heat-stable organic peroxide composition, the method for preparing the same and uses thereof for modifying polymers.Type: ApplicationFiled: November 17, 2003Publication date: July 15, 2004Inventors: Sandra Grimaldi, Olivier Guerret, Jean-Luc Couturier, Fabien Debaud
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Publication number: 20040132930Abstract: The invention concerns a method of polymerization in aqueous suspension of vinyl chloride alone or mixed with another vinyl monomer, wherein the initiator comprises at least a compound selected from dialkyl peroxydicarbonates, peroxy-tert-alkanoates and diacyl peroxides, and it consists in using, as short-stopper of the polymerization, a stable free nitroxyl radical. The resulting resins have good whiteness.Type: ApplicationFiled: October 2, 2003Publication date: July 8, 2004Inventors: Christian Bonardi, Jean-Luc Couturier, Sandra Grimaldi, Olivier Guerret, Jacques Kervennal, Pierre Hebrard, Bouchra Taha