Patents by Inventor Sébastien Sterin
Sébastien Sterin 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: 9010393Abstract: Tyre and rubber composition for tyre, based on at least one isoprene elastomer (for example natural rubber), an inorganic filler as reinforcing filler (for example silica) and a coupling system which provides the bonding between the said reinforcing inorganic filler and the isoprene elastomer, the said coupling system comprising, in combination: as first coupling agent, a silane sulphide compound; as second coupling agent, an at least bifunctional organosilicon compound (for example an organosilane or an organosiloxane) which can be grafted to the elastomer by means of an azodicarbonyl functional group (—CO—N?N—CO—).Type: GrantFiled: May 11, 2006Date of Patent: April 21, 2015Assignee: Michelin Recherche et Technique, S.A.Inventors: Jose Carlos Araujo Da Silva, Nathalie Binde, Pierre Robert, Sebastien Sterin, Anne Veyland
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Patent number: 8664311Abstract: Elastomer isoprene rubber compositions contain an effective amount of a polyfunctional coupling system (A) as an inorganic-elastomer filler coupling agent, and (B) at least one elastomer of natural or synthetic rubber; (C) an inorganic filler as reinforcing filler; (D) other conventional constituents or additives comprising one or more vulcanizing agent(s), the polyfunctional coupling system being of the constituents (A1) and (A2): (A1) is at least one coupling agent selected from among the functionalized organosilicon compounds of formula (I): [(G0)3SiO1/2]m[(G0)2SiO2/2]n[G0SiO3/2]o[SiO4/2]p[(G2)a(G1)a?(Z—CO—N?N—CO-A)SiO(3-a-a?)/2]q and (A2) is at least one coupling agent selected among polysulfurated “symmetric” silanes, or sulfurated “asymmetric” silanes.Type: GrantFiled: May 18, 2006Date of Patent: March 4, 2014Assignee: Rhodia ChimieInventors: Laurent Guy, Michel Fernandez, Sebastien Sterin
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Patent number: 8546474Abstract: Thermally-stable silicone elastomers are prepared from organopolysiloxane compositions by polyaddition, polycondensation or vulcanization reactions in the presence of peroxide; the thermal stability of the silicone elastomers is achieved by the inclusion of an additive derived from an iron (III) complex.Type: GrantFiled: October 23, 2007Date of Patent: October 1, 2013Assignee: Bluestar Silicones France SASInventors: Laurent Saint-Jalmes, Sébastien Sterin, Christian Prud'Homme, Catherine George
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Patent number: 8530562Abstract: Elastomeric isoprene rubber compositions contain an effective amount of a coupling system (A) as an inorganic filler/elastomer coupling agent, and (B) at least one natural or synthetic rubber elastomer, (C) an inorganic filler as reinforcing filler, (D) other conventional constituents or additives comprising (a) vulcanization agent(s), the coupling system (A) being a particular mixture of the following combination of constituents (A1) and (A2): (A1) is at least one coupling agent selected from among the following functionalized organosilicon compounds of formula (I):[(G0)3SiO1/2]m[(G0)2SiO2/2]n[G0SiO3/2]o[SiO4/2]p[(G2)a(G1)a?(Z—CO—N?N—CO-A)SiO(3-a-a?)/2]g and (A2) is at least one coating agent for the reinforcing filler including one compound with the single function Y in the structure thereof which is capable of bonding physically and chemically to the inorganic filler and resulting in an increase in dispersion of the charge within the rubber matrix and a reduction in viscosity of the composition.Type: GrantFiled: May 19, 2006Date of Patent: September 10, 2013Assignee: Rhodia ChimieInventors: Laurent Guy, Michel Fernandez, Sébastien Sterin
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Patent number: 8524823Abstract: Elastomeric isoprene rubber compositions contain an effective amount of a coupling agent (A) comprising an organosilicon compound with coupling agent functions for inorganic/elastomeric fillers and include (B) at least one natural or synthetic rubber elastomer, (C) an inorganic filler as reinforcement filler, (D) other conventional constituents or additives comprising vulcanization agents; the coupling agent (A) being a functionalized organosilicon compound, including the following two compounds (i) and (2i), (i) being at least one functionalized siloxane corresponding to the formula (I): [(G0)3SiO1/2]m [(G0)2SiO2/2]n [G0SiO3/2]o [SiO4/2]p [(G2)a(G1)a?(Z—CO—N?N—CO-A)SiO(3-a-a?)/2]q and (2i) being a mixture of at least one functionalized siloxane (i) with (3i) at least one functionalized organosilane also corresponding to formula (I) where m=n=o=p=0 (zero), q=1, a=0, 1, 2 or 3 and the sum a+a?=3.Type: GrantFiled: May 19, 2006Date of Patent: September 3, 2013Assignee: Rhodia ChimieInventors: Laurent Guy, Michel Fernandez, Sébastien Sterin
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Patent number: 8492475Abstract: A subject-matter of the present invention is a rubber composition intended for the manufacture of tires or of tire semi-finished products, based on at least one isoprene elastomer, an inorganic filler as reinforcing filler and a polyfunctional organosiloxane coupling agent capable of providing the bonding between the reinforcing inorganic filler and the isoprene elastomer, comprising per molecule, grafted to its silicon atoms, on the one hand at least one hydroxyl or hydrolysable functional group allowing it to be grafted to the reinforcing inorganic filler and, on the other hand, at least one group bearing at least one azodicarbonyl functional group —CO—N?N—CO— allowing it to be grafted to the isoprene elastomer.Type: GrantFiled: March 2, 2011Date of Patent: July 23, 2013Assignee: Michelin Recherche et Technique S.A.Inventors: José Carlos Araujo Da Silva, Karine Longchambon, Sebastien Sterin
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Patent number: 8367812Abstract: The synthesis of purified functionalized organosilicon compounds containing at least one active azo group having formula (I): [(G0)3SiO1/2]m[(G0)2SiO2/2]n[G0SiO3/2]o[SiO4/2]p[(G2)a(G1)a?(Z—CO—HN?NH—CO-A)SiO(3-a-a?)/2] entails providing at least one hydrazino (—HN—NH—) precursor (II) of the compound (I) and oxidizing the precursor (II) into an azo group specific to the compound (I) with the aid of an oxidizing system comprising at least one oxidant (Ox) and at least one base (B), wherein 1) Ox is selected from among the oxidants that can oxidize a hydrazine function into an azo function, with or without the exclusion of N-bromosuccinimide (NBS), 2) and/or Ox (optionally B) is/are employed in stoichiometric quantities in relation to the precursor (II); 3) and/or the organosilicon compounds (I) thus prepared are subjected to a purification post-treatment to eliminate any unwanted residues of the base B used, with the proviso that, when NBS is not excluded, characteristic (1) is combined with characteristic (2) aType: GrantFiled: May 16, 2006Date of Patent: February 5, 2013Assignee: Rhodia ChimieInventor: Sébastien Sterin
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Patent number: 8129452Abstract: This invention is directed to stabilizing additives that contain at least one platinum complex, with the complex including a carbene group. The stabilizing additives make it possible to improve the resistance to decomposition of silicone elastomers under high temperatures. The additive can be used in a polyorganosiloxane composition intended for the production of a silicone elastomer with either crosslinks at high temperature under the action of organic peroxides or crosslinks at ambient temperature or with heat by polyaddition reactions in the presence of a metal catalyst.Type: GrantFiled: February 22, 2006Date of Patent: March 6, 2012Assignee: Rhodia ChimieInventors: Delphine Blanc-Magnard, Alain Pouchelon, Sebastien Sterin, Rémi Thiria
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Publication number: 20110152458Abstract: A subject-matter of the present invention is a rubber composition intended for the manufacture of tyres or of tyre semi-finished products, based on at least one isoprene elastomer, an inorganic filler as reinforcing filler and a polyfunctional organosiloxane coupling agent capable of providing the bonding between the reinforcing inorganic filler and the isoprene elastomer, comprising per molecule, grafted to its silicon atoms, on the one hand at least one hydroxyl or hydrolysable functional group allowing it to be grafted to the reinforcing inorganic filler and, on the other hand, at least one group bearing at least one azodicarbonyl functional group —CO—N?N—CO— allowing it to be grafted to the isoprene elastomer.Type: ApplicationFiled: March 2, 2011Publication date: June 23, 2011Applicant: Michelin Recherche et Technique S.A.Inventors: Jose Carlos ARAUJO DA SILVA, Karine LONGCHAMBON, Sebastien STERIN
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Patent number: 7943747Abstract: Functionalized organosilicon compounds comprising at least one activated azo group of formula (I): [(G0)3SiO1/2]m [(G0)2SiO2/2]n [G0SiO3/2]o [SiO4/2]p [(G2)a(G1)a?(Z-CO—HN?NH—CO-A)SiO(3-a-a?)/2], for example a mixture of silane species of formula (ia): (C2H5O)3Si—(CH2)3—NH—CO—N?N—COOC2H3; with siloxane species of formulae: (2i.1a): [(CH3)3SiO1/2] [(C2H5O)2 {(CH2)3—NH—CO—N?N—COOC2H5} SiO2/2] and (2i.2a): [(CH3)3SiO1/2]2 [(C2H5O) {(CH2)3—NH—CO—N?N—COOC2H5} SiO2/2], are prepared from at least one hydrazino precursor (II) (—HN—NH—) of compound (I), by oxidizing the precursor (II) into an azo group for the compound (I) utilizing at least one oxidizing agent (Ox) and at least one vase (B) and also a supplementary reagent selected from among silanes of formula (III): (G DEG)4-p1Si (G2?)p1 [for example, (CH3)3(C2HSO)Si].Type: GrantFiled: May 17, 2006Date of Patent: May 17, 2011Assignee: Rhodia ChimieInventor: Sebastien Sterin
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Publication number: 20110040064Abstract: Thermally-stable silicone elastomers are prepared from organopolysiloxane compositions by polyaddition, polycondensation or vulcanization reactions in the presence of peroxide; the thermal stability of the silicone elastomers is achieved by the inclusion of an additive derived from an iron (III) complex.Type: ApplicationFiled: October 23, 2007Publication date: February 17, 2011Inventors: Laurent Saint-Jalmes, Sébastien Sterin, Christian Prud'Homme, Catherine George
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Patent number: 7772350Abstract: A method for preparing polyorganosiloxanes (POS) by a ring-opening polymerization and/or linear, non-linear or cyclic POS redistribution in the presence of a nucleophilic carbene. The initial efficiency of the POS conversion is substantially increased at low temperature, resulting in less residual content of initial POS.Type: GrantFiled: December 8, 2004Date of Patent: August 10, 2010Assignees: Rhodia Chimie, Centre National de la Recherche Scientifique-CNRSInventors: Delphine Blanc-Magnard, Sébastien Sterin, Etienne Fleury, Olivier Buisine, Antoine Baceiredo
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Patent number: 7750171Abstract: Process for preparing catalyst assemblies by mixing a metal catalyst capable of catalyzing a hydrosilylation reaction and an organophosphorus inhibitor of the formula (I) or of formula (VIII) P(OR)3, either by mixing the inhibitor into a solution of catalyst in an unsaturated silane or siloxane or by mixing the inhibitor into a gum or oil at a temperature greater than the melting temperature or softening temperature of the organophosphorus compound, then mixing the catalyst. Catalyst assemblies, process for preparing one-component silicone compositions, and resultant compositions.Type: GrantFiled: June 26, 2008Date of Patent: July 6, 2010Assignee: Bluestar Silicones FranceInventors: Sébastien Sterin, Rémi Thiria
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Publication number: 20090264563Abstract: This invention is directed to stabilizing additives that contain at least one platinum complex, with the complex including a carbene group. The stabilizing additives make it possible to improve the resistance to decomposition of silicone elastomers under high temperatures. The additive can be used in a polyorganosiloxane composition intended for the production of a silicone elastomer with either crosslinks at high temperature under the action of organic peroxides or crosslinks at ambient temperature or with heat by polyaddition reactions in the presence of a metal catalyst.Type: ApplicationFiled: February 22, 2006Publication date: October 22, 2009Applicant: Rhonda ChimeInventors: Delphine Blanc-Magnard, Alain Pouchelon, Sebastien Sterin, Remi Thiria
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Publication number: 20090234066Abstract: Tyre and rubber composition for tyre, based on at least one isoprene elastomer (for example natural rubber), an inorganic filler as reinforcing filler (for example silica) and a coupling system which provides the bonding between the said reinforcing inorganic filler and the isoprene elastomer, the said coupling system comprising, in combination: as first coupling agent, a silane sulphide compound; as second coupling agent, an at least bifunctional organosilicon compound (for example an organosilane or an organosiloxane) which can be grafted to the elastomer by means of an azodicarbonyl functional group (—CO—N?N—CO—).Type: ApplicationFiled: May 11, 2006Publication date: September 17, 2009Inventors: Jose Carlos Araujo Da Silva, Nathalie Binde, Pierre Robert, Sebastien Sterin, Anne Veyland
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Publication number: 20090221737Abstract: The invention relates to the use of an effective amount of a coupling system (A) as an inorganic filler/elastomer coupling agent in rubber compositions comprising: (B) at least one natural or synthetic rubber elastomer, (C) an inorganic filler as reinforcing filler, (D) all or part of the other constituents or additives normally used particularly comprising (a) vulcanisation agent(s) the use being characterised in that: the coupling system (A) is a particular mixture of the following combination of ingredients (A1) and (A2): (A1) is at least one coupling agent selected from the following functionalised organosilicon compounds of formula (I): [(G0)3SiO1/2]m[(G0)2SiO2/2]n[G0SiO3/2]o[SiO4/2]p[(G2)a(G1)a(Z-CO—N?N—CO-A)SiO(3-a-a?)/2]g where the symbols Z, A, G0, G1, G2, a, a?, m, n, o, p and q have the definitions given in claim 1, (A2) is at least one coating agent for the reinforcing filler comprising one compound with the single function Y in the structure thereof which is capable of bonding physically and chemType: ApplicationFiled: May 19, 2006Publication date: September 3, 2009Applicant: Rhodia ChimieInventors: Laurent Guy, Michel Fernandez, Sebastien Sterin
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Publication number: 20090215952Abstract: Elastomer isoprene rubber compositions contain an effective amount of a polyfunctional coupling system (A) as an inorganic-elastomer filler coupling agent, and (B) at least one elastomer of natural or synthetic rubber; (C) an inorganic filler as reinforcing filler; (D) other conventional constituents or additives comprising one or more vulcanizing agent(s), the polyfunctional coupling system being of the constituents (A1) and (A2): (A1) is at least one coupling agent selected from among the functionalized organosilicon compounds of formula (I): [(G0)3SiO1/2]m [(G0)2SiO2/2]n [G0SiO3/2]o [SiO4/2]p [(G2)a(G1)a?(Z-CO—N?N—CO-A)SiO(3-a-a?)/2]q and (A2) is at least one coupling agent selected among polysulfurated “symmetric” silanes, or sulfurated “asymmetric” silanes.Type: ApplicationFiled: May 18, 2006Publication date: August 27, 2009Inventors: Laurent Guy, Michel Fernandez, Sebastien Sterin
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Publication number: 20090216000Abstract: The synthesis of purified functionalized organosilicon compounds containing at least one active azo group having formula (I): [(G0)3SiO1/2]m [(G0)2SiO2/2]n[G0SiO3/2]o[SiO4/2]p[(G2)a(G1)a?(Z-CO—HN?NH—CO-A)SiO(3-a-a?)/2] entails providing at least one hydrazino (—HN—NH—) precursor (II) of the compound (I) and oxidizing the precursor (II) into an azo group specific to the compound (I) with the aid of an oxidizing system comprising at least one oxidant (Ox) and at least one base (B), wherein 1) Ox is selected from among the oxidants that can oxidize a hydrazine function into an azo function, with or without the exclusion of N-bromosuccinimide (NBS), 2) and/or Ox (optionally B) is/are employed in stoichiometric quantities in relation to the precursor (II); 3) and/or the organosilicon compounds (I) thus prepared are subjected to a purification post-treatment to eliminate any unwanted residues of the base B used, with the proviso that, when NBS is not excluded, characteristic (1) is combined with characteristic (2)Type: ApplicationFiled: May 16, 2006Publication date: August 27, 2009Applicant: RHONDIA CHIMIEInventor: Sebastien Sterin
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Publication number: 20090216001Abstract: The invention concerns synthesis of functionalized organosilicium compounds comprising at least one activated azo group of formula (I): [(G0)3SiO1/2]m[(G0)2SiO2/2]n[G0SiO3/2]o[SiO4/2]p[(G2)a(G1)a?(Z-CO—HN?NH—CO-A)SiO(3-a-a?)/2]. Said compounds can for example be a mixture of silane species of formula (ia): (C2H5O)3Si—(CH2)3—NH—CO—N?N—COOC2H3; with siloxane species of formulae: (2i.1a): [(CH3)3SiO1/2][(C2H5O)2{(CH2)3—NH—CO—N?N—COOC2H5}SiO1/2] et (2i.2a): [(CH3)3SiO1/2]2[(C2H5O){(CH2)3—NH—CO—N?N—COOC2H5}SiO2/2].Type: ApplicationFiled: May 17, 2006Publication date: August 27, 2009Applicant: RHODIA CHIMIEInventor: Sebastien Sterin
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Publication number: 20090215948Abstract: Elastomeric isoprene rubber compositions contain an effective amount of a coupling agent (A) comprising an organosilicon compound with coupling agent functions for inorganic/elastomeric fillers and include (B) at least one natural or synthetic rubber elastomer, (C) an inorganic filler as reinforcement filler, (D) other conventional constituents or additives comprising vulcanization agents; the coupling agent (A) being a functionalized organosilicon compound, including the following two compounds (i) and (2i), (i) being at least one functionalized siloxane corresponding to the formula (I): [(G0)3SiO1/2]m[(G0)2SiO2/2]n[G0SiO3/2]o[SiO4/2]p[(G2)a(G1)a?(Z-CO N?N—CO-A)SiO(3-a-a?)/2]q and (2i) being a mixture of at least one functionalized siloxane (i) with (3i) at least one functionalized organosilane also corresponding to formula (I) where m=n=o=p=0 (zero), q=1, a=0, 1, 2 or 3 and the sum a+a?=3.Type: ApplicationFiled: May 19, 2006Publication date: August 27, 2009Inventors: Laurent Guy, Michel Fernandez, Sèbastien Sterin