Patents by Inventor Philippe Labrunie
Philippe Labrunie 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: 11732117Abstract: A rubber composition is based on at least: a diene elastomer; a reinforcing inorganic filler; an agent for coupling the reinforcing inorganic filler with the diene elastomer, said coupling agent being a blocked mercaptosilane of formula (I), as described in the claims; a hydrocarbon-based resin predominantly composed of monomers chosen from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, and a crosslinking system. A semi-finished article and a tire may comprise at least one such rubber composition.Type: GrantFiled: October 3, 2018Date of Patent: August 22, 2023Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Philippe Labrunie, Karine Longchambon, Laurent Copey
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Publication number: 20220371371Abstract: A tire comprises an outer strip (2) having a tread (21). The outer strip (2) has a central part and two axially outer parts and comprises at least two rubber compounds (M1, M2) making up at least 90% of the volume of the outer strip (2). The first compound (M1) is radially outside of the second compound (M2), which makes up at least 60% of the axially outer parts and being disposed in a layer that is substantially continuous from one axially outer part to the other, said layer having a minimum thickness at least equal to 0.3 mm. The compound M1 has a modulus G* that is greater than 1.35 times and less than 3 times that of the compound M2. The compound M1 has a dynamic loss at 0° C. greater than 0.5 and the compound M2 has a dynamic loss at 23° C. less than 0.3.Type: ApplicationFiled: October 15, 2020Publication date: November 24, 2022Inventors: MIGUEL FERNANDEZ, REGIS SCHACH, PHILIPPE LABRUNIE, KARINE LONGCHAMBON, ALEXANDRE TOBIE
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Publication number: 20220371370Abstract: A tire comprises an outer strip (2) having a tread (21). The outer strip (2) has a central part and two axially outer parts and comprises at least two rubber compounds (M1, M2) making up at least 90% of the volume of the outer strip (2). The first compound (M1) is radially on the outside of the second compound (M2), which makes up at least 60% of the axially outer parts and being disposed in a layer that is substantially continuous from one axially outer part to the other, said layer having a minimum thickness at least equal to 0.3 mm. The compound M1 has a modulus G* that is greater than 1.35 times and less than 3 times that of the compound M2. The compound M1 has a dynamic loss at 0° C. greater than 0.5 and the compound M2 has a dynamic loss at 23° C. less than 0.3.Type: ApplicationFiled: October 15, 2020Publication date: November 24, 2022Inventors: MIGUEL FERNANDEZ, KARINE LONGCHAMBON, REGIS SCHACH, PHILIPPE LABRUNIE, ALEXANDRE TOBIE
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Patent number: 11220591Abstract: A rubber composition based on at least: from 50 to 100 phr of one or more diene elastomers, referred to as very low glass transition temperature (Tg) diene elastomers, having a Tg within a range of from ?110° C. to ?70° C., selected from butadiene homopolymers, copolymers of butadiene and of a vinylaromatic monomer, having a content of vinylaromatic units of between 0 and 5% by weight, and mixtures thereof a reinforcing filler a crosslinking system; and from 40 to 150 phr of at least one hydrogenated hydrocarbon resin predominantly composed of units derived from C9 monomers, the resin having a content of aromatic protons of less than 25% and a content of ethylenic protons of less than 1%.Type: GrantFiled: December 5, 2017Date of Patent: January 11, 2022Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Benoit De Gaudemaris, Philippe Labrunie
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Publication number: 20210213781Abstract: A tire tread comprises a rubber composition based on at least from 50 to 100 phr of a first diene elastomer, the first diene elastomer being a polybutadiene-based elastomer, modified with a functional group capable of interacting with silica as reinforcing filler; optionally from 0 to 50 phr of a second diene elastomer; at least 20 phr of carbon black; less than 40 phr of silica as reinforcing filler; a coupling agent; a plasticizing system comprising a plasticizing resin exhibiting a glass transition temperature of greater than 20° C.; and a crosslinking system based on organic peroxide; the total content of the first diene elastomer and of the second diene elastomer in the composition being within a range extending from 80 to 100 phr.Type: ApplicationFiled: April 25, 2019Publication date: July 15, 2021Inventor: PHILIPPE LABRUNIE
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Publication number: 20210087370Abstract: A tire tread comprises a rubber composition based on at least from 10 to 90 phr of a first diene elastomer, the first diene elastomer being a polybutadiene-based elastomer, modified with a functional group capable of interacting with silica as reinforcing filler, the first diene elastomer exhibiting a glass transition temperature of less than ?80° C.; from 10 to 90 phr of a second diene elastomer, the second diene elastomer being a styrene/butadiene copolymer exhibiting a glass transition temperature of greater than ?80° C.; from 90 to 150 phr of silica as reinforcing filler; a coupling agent; a plasticizing system comprising a plasticizing resin exhibiting a glass transition temperature of greater than 20° C.; and a crosslinking system based on organic peroxide; the total content of the first diene elastomer and of the second diene elastomer in the composition being within a range extending from 80 to 100 phr.Type: ApplicationFiled: December 12, 2018Publication date: March 25, 2021Inventor: PHILIPPE LABRUNIE
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Publication number: 20210079200Abstract: A tire tread comprises a rubber composition based on at least from 50 to 100 phr of a first diene elastomer, the first diene elastomer being a polybutadiene-based elastomer, modified with a functional group capable of interacting with silica as reinforcing filler; optionally from 0 to 50 phr of a second diene elastomer; between 40 and 90 phr of silica as reinforcing filler; a coupling agent; a plasticizing system comprising a plasticizing resin exhibiting a glass transition temperature of greater than 20° C.; and a crosslinking system based on organic peroxide; the total content of the first diene elastomer and of the second diene elastomer in the composition being within a range extending from 80 to 100 phr.Type: ApplicationFiled: December 12, 2018Publication date: March 18, 2021Inventor: PHILIPPE LABRUNIE
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Patent number: 10836886Abstract: A rubber composition is based on at least one diene elastomer, a reinforcing filler, a vulcanizing system and a plasticizing system, said reinforcing filler predominantly comprising, by weight, a silica with a very high specific surface area, with a CTAB specific surface area greater than 170 m2/g, and said plasticizing system comprising at least more than 15 phr (parts by weight per hundred parts by weight of elastomer) of a hydrocarbon resin having a glass transition temperature (Tg) between ?40° C. and 20° C.Type: GrantFiled: June 30, 2016Date of Patent: November 17, 2020Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventor: Philippe Labrunie
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Publication number: 20200325312Abstract: A rubber composition is based on at least: a diene elastomer; a reinforcing inorganic filler; an agent for coupling the reinforcing inorganic filler with the diene elastomer, said coupling agent being a blocked mercaptosilane of formula (I), as described in the claims; a hydrocarbon-based resin predominantly composed of monomers chosen from the group consisting of cyclopentadiene, dicyclopentadiene, methylcyclopentadiene and mixtures thereof, and a crosslinking system. A semi-finished article and a tire may comprise at least one such rubber composition.Type: ApplicationFiled: October 3, 2018Publication date: October 15, 2020Inventors: PHILIPPE LABRUNIE, KARINE LONGCHAMBON, LAURENT COPEY
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Publication number: 20200190292Abstract: A rubber composition based on at least: from 50 to 100 phr of one or more diene elastomers, referred to as very low glass transition temperature (Tg) diene elastomers, having a Tg within a range of from ?110° C. to ?70° C., selected from butadiene homopolymers, copolymers of butadiene and of a vinylaromatic monomer, having a content of vinylaromatic units of between 0 and 5% by weight, and mixtures thereof a reinforcing filler a crosslinking system; and from 40 to 150 phr of at least one hydrogenated hydrocarbon resin predominantly composed of units derived from C9 monomers, the resin having a content of aromatic protons of less than 25% and a content of ethylenic protons of less than 1%.Type: ApplicationFiled: December 5, 2017Publication date: June 18, 2020Inventors: BENOIT DE GAUDEMARIS, PHILIPPE LABRUNIE
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Patent number: 10160847Abstract: A tire, which has an improved grip on wet ground, includes a tread formed of at least a rubber composition. The rubber composition includes: 20 to 100 phr of a first diene elastomer bearing at least one SiOR function, with R being hydrogen or a hydrocarbon radical, and with phr referring to parts by weight per hundred parts of elastomer; 100 to 160 phr of a reinforcing inorganic filler; and a plasticizing system. The plasticizing system includes: a content A of between 5 and 60 phr of a hydrocarbon resin having a Tg above 20° C.; and a content B of between 5 and 60 phr of a liquid plasticizing agent. A total content A+B is greater than 45 phr. The rubber composition optionally includes 0 to 80 phr of a second diene elastomer.Type: GrantFiled: November 24, 2011Date of Patent: December 25, 2018Assignee: COMPAGNIE GENERALE DES ETABLISSMENTS MICHELINInventors: Pierre Lesage, Philippe Labrunie, Didier Vasseur, Xavier Saintigny
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Publication number: 20180186979Abstract: A rubber composition is based on at least one diene elastomer, a reinforcing filler, a vulcanizing system and a plasticizing system, said reinforcing filler predominantly comprising, by weight, a silica with a very high specific surface area, with a CTAB specific surface area greater than 170 m2/g, and said plasticizing system comprising at least more than 15 phr (parts by weight per hundred parts by weight of elastomer) of a hydrocarbon resin having a glass transition temperature (Tg) between ?40° C. and 20° C.Type: ApplicationFiled: June 30, 2016Publication date: July 5, 2018Inventor: PHILIPPE LABRUNIE
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Publication number: 20170204257Abstract: A tire tread comprises a rubber composition based on at least: an elastomer matrix comprising more than 50% by weight of a solution SBR bearing a silanol function at the chain end, a reinforcing filler present at a content of between 40 and 80 phr, which reinforcing filler comprises between 40 and 80 phr of a silica, a coupling agent for coupling the silica to the solution SBR, 10 to 50 phr of a hydrocarbon-based resin having a Tg of greater than 20° C., and 0 to less than 5 phr of a liquid plasticizer. Such a tire has a good performance compromise between rolling resistance and grip.Type: ApplicationFiled: May 27, 2015Publication date: July 20, 2017Inventors: PHILIPPE LABRUNIE, BENOIT DE GAUDEMARIS
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Publication number: 20170204256Abstract: A tire tread comprises a rubber composition based on at least: an elastomer matrix comprising more than 50% by weight of a solution SBR bearing a silanol function and an amine function, a reinforcing filler present at a content of between 40 and 80 phr, which reinforcing filler comprises between 40 and 80 phr of a silica, a coupling agent for coupling the silica to the solution SBR, 10 to 50 phr of a hydrocarbon-based resin having a Tg of greater than 20° C., and 0 to less than 5 phr of a liquid plasticizer. Such a tire has a good performance compromise between rolling resistance and wet grip.Type: ApplicationFiled: May 27, 2015Publication date: July 20, 2017Inventors: PHILIPPE LABRUNIE, BENOIT DE GAUDEMARIS
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Publication number: 20160319116Abstract: The present invention relates to a tire tread that comprises a rubber composition based on at least: an elastomer matrix comprising more than 50 wt % of a first diene elastomer bearing a silanol function and a pendent amine function; a silica at a level between 120 and 140 phr; a coupling agent; and a plasticizer system comprising a hydrocarbon-containing resin having a Tg above 20° C. according to a content A ranging from 5 to 60 phr, a hydrocarbon-containing resin having a Tg above 20° C. and a liquid plasticizer according to a content B ranging from 0 to 60 phr, a liquid plasticizer, it being understood that the total level A+B is at least equal to 60 phr, preferably ranging from 60 to 90 phr. The tread according to the invention makes it possible to improve the compromise between wet grip and dry grip of a tire with low rolling resistance.Type: ApplicationFiled: December 9, 2014Publication date: November 3, 2016Inventors: PHILIPPE LABRUNIE, BENOÏT DE GAUDEMARIS
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Publication number: 20130296471Abstract: A tyre, which has an improved grip on wet ground, includes a tread formed of at least a rubber composition. The rubber composition includes: 20 to 100 phr of a first diene elastomer bearing at least one SiOR function, with R being hydrogen or a hydrocarbon radical, and with phr referring to parts by weight per hundred parts of elastomer; 100 to 160 phr of a reinforcing inorganic filler; and a plasticizing system. The plasticizing system includes: a content A of between 5 and 60 phr of a hydrocarbon resin having a Tg above 20° C.; and a content B of between 5 and 60 phr of a liquid plasticizing agent. A total content A+B is greater than 45 phr. The rubber composition optionally includes 0 to 80 phr of a second diene elastomer.Type: ApplicationFiled: November 24, 2011Publication date: November 7, 2013Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Pierre Lesage, Philippe Labrunie, Didier Vasseur, Xavier Saintigny
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Publication number: 20130274404Abstract: A tyre, which has an improved grip on wet ground, includes a tread formed of at least a rubber composition. The rubber composition includes: from 50 to 100 phr of a copolymer based on styrene and butadiene, e.g., a styrene/butadiene copolymer (SBR), with phr referring to parts by weight per hundred parts of elastomer; from 100 to 150 phr of a reinforcing inorganic filler, e.g., silica; and a plasticizing system. The plasticizing system includes: a content A of between 10 and 60 phr of a thermoplastic hydrocarbon resin exhibiting a Tg of greater than 20° C.; and a content B of between 10 and 60 phr of a liquid plasticizing agent. A total content A+B is greater than 50 phr. Optionally, the rubber composition includes from 0 to 50 phr of another copolymer, e.g., a diene elastomer such as a polybutadiene or natural rubber.Type: ApplicationFiled: November 24, 2011Publication date: October 17, 2013Applicants: MICHELIN RECHERCHE ET TECHNIQUE S.A., COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELINInventors: Didier Vasseur, Philippe Labrunie, Xavier Saintigny
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Patent number: 7834074Abstract: Plasticizing system usable for the plasticizing of a diene rubber composition. The plasticizing system is based on an MES or TDAE oil and a polylimonene resin. The rubber composition has an improved resistance to abrasion and to cuts, said composition being based on at least a diene elastomer, a reinforcing filler, a cross-linking system and a plasticizing system comprising between 5 and 35 phr of an MES or TDAE oil, and between 5 and 35 phr of a polylimonene resin (phr=parts by weight per hundred of elastomer). Advantageously, this plasticizing system furthermore comprises an unsaturated (C12-C22) fatty acid triester of glycerol, preferably a glycerol trioleate. A process is disclosed for preparing such a composition. The composition can be used for the manufacture of a finished article or a semi-finished product intended for a suspension system of a motor vehicle, in particular a tire or a tread of such a tire.Type: GrantFiled: February 10, 2005Date of Patent: November 16, 2010Assignee: Michelin Recherche et Technique S.A.Inventors: Thierry Brunelet, Martine Dinh, Jean-Michel Favrot, Philippe Labrunie, Garance Lopitaux, Jean-Gabriel Royet
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Publication number: 20080156404Abstract: The inventive plasticising system is used for plasticising a dienic rubber compound is characterised in that it is based on a MES or TDAE oil and a polylimonene resin. Said rubber compound exhibits an improved abrasion and cut resistance and is based on at least one type of dienic elastomer, a reinforcing filler, a cross-linking system and a plasticising system comprising from 5 to 35 to 35 pce of the MES or TDAE oil and from 5 to 35 to 35 pce of polylimonene resin (pce=parts by weight percent elastomer). Advantageously, said plasticising system also comprises a glycerol unsaturated fatty acid triester (C12-C22), preferably a glycerol trifoliate. The inventive method for producing said compound, using the compound for producing a final or semi-final product for the gripping system of a motor vehicle with ground, in particular the tire or the thread thereof are also disclosed.Type: ApplicationFiled: February 10, 2005Publication date: July 3, 2008Applicant: Michelin Recherche et Technique S.A.Inventors: Thierry Brunelet, Martine Dinh, Jean-Michel Favrot, Philippe Labrunie, Garance Lopitaux, Jean-Gabriel Royet