Patents by Inventor Eric Sean Castner
Eric Sean Castner 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).
-
Publication number: 20240132697Abstract: A sulfur-vulcanizable rubber compound comprises a silane functionalized diene elastomer, a dual silane coupling system, and a silica filler. The non-active sulfur containing silane coupling agent excludes an active sulfur moiety. The rubber compound is a reaction product of a siloxyl condensation reaction between the silane functionalized diene elastomer and the dual silane coupling system. The dual coupling system comprises a non-active sulfur containing silane coupling agent for reacting with an associated precipitated silica to produce a hydrophobic silica; and a crosslinking reagent for reacting with the non-active sulfur containing silane coupling agent and an associated polymer.Type: ApplicationFiled: September 27, 2022Publication date: April 25, 2024Inventors: Yuan-Yong Yan, Justin Yinket Che, Eric Sean Castner, Paul Harry Sandstrom
-
Patent number: 11560462Abstract: It has been found that carboxylic acid functionalized high cis-1,4-polybutadiene rubber which is comprised of polybutadiene rubber chains having a cis-1,4-microstructure content of at least 90 percent has much better interaction with metal salts of ?,?-ethylenically unsaturated carboxylic acids, such as zinc diacrylate or zinc dimethacrylate. This results in such rubber compositions being stiff while still exhibiting a lower level of hysteresis. These characteristics are beneficial when used in manufacturing tire apex compositions, in manufacturing golf ball cores, and in a wide variety of other applications. Such rubber compositions can be used as substitutes for thermoplastic elastomers in many applications.Type: GrantFiled: September 18, 2020Date of Patent: January 24, 2023Assignee: THE GOODYEAR TIRE & RUBBER COMPANYInventors: Eric Sean Castner, Michael Lawrence Gersman, Bruce Raymond Hahn
-
Patent number: 10233311Abstract: The invention relates to preparation of a precipitated silica reinforced rubber composition which contains styrene/butadiene elastomer modified with a combination of bis(3-triethoxysilylpropyl) polysulfide silica coupler and mercaptoorganoalkoxysilane, a rubber composition thereof and a tire with a component of such rubber composition.Type: GrantFiled: July 15, 2016Date of Patent: March 19, 2019Assignee: The Goodyear Tire & Rubber CompanyInventors: Liqing Ma, Bruce Raymond Hahn, George Jim Papakonstantopoulos, Eric Sean Castner, Dan Qu, Paul Harry Sandstrom
-
Publication number: 20180016422Abstract: The invention relates to preparation of a precipitated silica reinforced rubber composition which contains styrene/butadiene elastomer modified with a combination of bis(3-triethoxysilylpropyl) polysulfide silica coupler and mercaptoorganoalkoxysilane, a rubber composition thereof and a tire with a component of such rubber composition.Type: ApplicationFiled: July 15, 2016Publication date: January 18, 2018Inventors: Liqing Ma, Bruce Raymond Hahn, George Jim Papakonstantopoulos, Eric Sean Castner, Dan Qu, Paul Harry Sandstrom
-
Patent number: 8662125Abstract: This invention discloses a tire which is comprised of a generally toroidal-shaped carcass with an outer circumferential tread, two spaced beads, at least one ply extending from bead to bead and sidewalls extending radially from and connecting said tread to said beads, wherein said tread is adapted to be ground-contacting, and wherein said tread is comprised of (1) a filler, (2) a cured rubbery polymer, and (3) core-shell particles which are comprised of (a) a crosslinked elastomeric core consisting essentially of repeat units that are derived from at least one conjugated diolefin monomer and from 15 weight percent to 30 weight percent at least one crosslinking monomer, wherein the crosslinked elastomeric core is a polymeric composition having a glass transition temperature which is within the range of ?20° C. to 20° C., and (b) a polymeric shell which is derived from at least one vinyl aromatic monomer, wherein the polymeric shell has a glass transition temperature which is within the range of 50° C.Type: GrantFiled: October 13, 2010Date of Patent: March 4, 2014Assignee: The Goodyear Tire & Rubber CompanyInventors: Eric Sean Castner, Lei Zheng, Feng Anne Xie, Ping Zhang
-
Publication number: 20110024011Abstract: This invention discloses a tire which is comprised of a generally toroidal-shaped carcass with an outer circumferential tread, two spaced beads, at least one ply extending from bead to bead and sidewalls extending radially from and connecting said tread to said beads, wherein said tread is adapted to be ground-contacting, and wherein said tread is comprised of (1) a filler, (2) a cured rubbery polymer, and (3) core-shell particles which are comprised of (a) a crosslinked elastomeric core consisting essentially of repeat units that are derived from at least one conjugated diolefin monomer and from 15 weight percent to 30 weight percent at least one crosslinking monomer, wherein the crosslinked elastomeric core is a polymeric composition having a glass transition temperature which is within the range of ?20° C. to 20° C., and (b) a polymeric shell which is derived from at least one vinyl aromatic monomer, wherein the polymeric shell has a glass transition temperature which is within the range of 50° C.Type: ApplicationFiled: October 13, 2010Publication date: February 3, 2011Applicant: THE GOODYEAR TIRE & RUBBER COMPANYInventors: Eric Sean Castner, Lei Zheng, Feng Anne Xie, Ping Zhang
-
Patent number: 7838112Abstract: This invention discloses a process for synthesizing a modified crosslinked elastomeric particle which comprises a two-step polymerization of a conjugated diolefin monomer and a vinyl aromatic monomer by emulsion polymerization, wherein the particle is synthesized by the steps of (1) polymerizing a conjugated diolefin monomer, alone or in combination with a vinyl aromatic monomer, and optionally a crosslinking monomer, to create a crosslinked elastomeric core having residual double bonds and an outer surface; (2) polymerizing a monomer of a vinyl aromatic monomer, alone or in combination with a diolefin monomer, to create a polymeric shell, wherein the polymeric shell is grafted to the outer surface of the polymeric core by reacting with the residual double bonds of the polymeric core; and (3) coagulating the core-shell emulsion latex solution to recover the particles.Type: GrantFiled: November 30, 2004Date of Patent: November 23, 2010Assignee: The Goodyear Tire & Rubber CompanyInventors: Eric Sean Castner, Lei Zheng, Feng Anne Xie, Ping Zhang
-
Patent number: 7825194Abstract: This invention discloses a process for synthesizing a hairy polymer particle which comprises the steps of (1) polymerizing a vinyl aromatic monomer by emulsion polymerization in an aqueous medium to produce core particles, (2) recovering the core particles from the aqueous medium, (3) dispersing the core particles in an organic solvent, (4) adding an organo-lithium compound to the dried core particles in the organic solvent to produce the hairless core initiator, and (5) utilizing the hairless core initiator to initiate the anionic polymerization of a conjugated diolefin monomer in an organic solvent to produce a solution of the hairy polymer particles. The hairy polymer nanoparticles can then be recovered from the organic solvent. These hairy polymer particles are comprised of (1) a core which is comprised of a polymer of a vinyl aromatic monomer and (2) hairs which are polymer chains of a conjugated diolefin monomer, wherein the hairs are covalently bonded to the core.Type: GrantFiled: October 10, 2008Date of Patent: November 2, 2010Assignee: The Goodyear Tire & Rubber CompanyInventors: Lei Zheng, Eric Sean Castner, Thierry Florent Edme Materne
-
Patent number: 7812092Abstract: This invention discloses a process for synthesizing a hairy polymer particle which comprises the steps of (1) polymerizing a vinyl aromatic monomer by emulsion polymerization in an aqueous medium to produce core particles, (2) recovering the core particles from the aqueous medium, (3) dispersing the core particles in an organic solvent, (4) adding an organo-lithium compound to the dried core particles in the organic solvent to produce the hairless core initiator, and (5) utilizing the hairless core initiator to initiate the anionic polymerization of a conjugated diolefin monomer in an organic solvent to produce a solution of the hairy polymer particles. The hairy polymer nanoparticles can then be recovered from the organic solvent. These hairy polymer particles are comprised of (1) a core which is comprised of a polymer of a vinyl aromatic monomer and (2) hairs which are polymer chains of a conjugated diolefin monomer, wherein the hairs are covalently bonded to the core.Type: GrantFiled: June 10, 2008Date of Patent: October 12, 2010Assignee: The Goodyear Tire & Rubber CompanyInventors: Lei Zheng, Eric Sean Castner, Thierry Florent Edme Materne
-
Patent number: 7645511Abstract: This invention discloses a process for synthesizing a modified crosslinked elastomeric particle which comprises a two-step polymerization of a conjugated diolefin monomer and a vinyl aromatic monomer by emulsion polymerization, wherein the particle is synthesized by the steps of (1) polymerizing a conjugated diolefin monomer, alone or in combination with a vinyl aromatic monomer, and optionally a crosslinking monomer, to create a crosslinked elastomeric core having residual double bonds and an outer surface; (2) polymerizing a monomer of a vinyl aromatic monomer, alone or in combination with a diolefin monomer, to create a polymeric shell, wherein the polymeric shell is grafted to the outer surface of the polymeric core by reacting with the residual double bonds of the polymeric core; and (3) coagulating the core-shell emulsion latex solution to recover the particles.Type: GrantFiled: March 28, 2006Date of Patent: January 12, 2010Assignee: The Goodyear Tire & Rubber CompanyInventors: Eric Sean Castner, Lei Zheng, Feng Anne Xie, Ping Zhang
-
Patent number: 7638574Abstract: This invention is based upon the discovered that crosslinked core-shell particles can be used as a filler in low cost emulsion styrene-butadiene rubber (ESBR) with excellent results being attained. In fact, such core-shell particle filled ESBR exhibits performance similar to silica filled solution styrene-butadiene rubber (SSBR) in terms of dynamic response, Payne effect, rebound and tan ? at 0° C. and 100° C. The utilization of such crosslinked core-shell particles in rubber compounds offers the additional advantage of weight reduction since the core-shell particles are significantly less dense than carbon black or silica fillers. The use of the crosslinked core-shell polymers of this invention in rubber formulations in place of silica also offers the advantage of not needing any expensive silane coupling agents to attain required levels of polymer/filler interaction. Accordingly, no silane coupling agent is used in the rubber compounds of this invention which leads to reduced cost.Type: GrantFiled: June 30, 2005Date of Patent: December 29, 2009Assignee: The Goodyear Tire & Rubber CompanyInventors: Ping Zhang, Lei Zheng, Feng Anne Xie, Eric Sean Castner
-
Publication number: 20090042719Abstract: This invention discloses a process for synthesizing a hairy polymer particle which comprises the steps of (1) polymerizing a vinyl aromatic monomer by emulsion polymerization in an aqueous medium to produce core particles, (2) recovering the core particles from the aqueous medium, (3) dispersing the core particles in an organic solvent, (4) adding an organo-lithium compound to the dried core particles in the organic solvent to produce the hairless core initiator, and (5) utilizing the hairless core initiator to initiate the anionic polymerization of a conjugated diolefin monomer in an organic solvent to produce a solution of the hairy polymer particles. The hairy polymer nanoparticles can then be recovered from the organic solvent. These hairy polymer particles are comprised of (1) a core which is comprised of a polymer of a vinyl aromatic monomer and (2) hairs which are polymer chains of a conjugated diolefin monomer, wherein the hairs are covalently bonded to the core.Type: ApplicationFiled: October 10, 2008Publication date: February 12, 2009Applicant: The Goodyear Tire & Rubber CompanyInventors: Lei Zheng, Eric Sean Castner, Thierry Florent Edme Materne
-
Publication number: 20080242813Abstract: This invention discloses a process for synthesizing a hairy polymer particle which comprises the steps of (1) polymerizing a vinyl aromatic monomer by emulsion polymerization in an aqueous medium to produce core particles, (2) recovering the core particles from the aqueous medium, (3) dispersing the core particles in an organic solvent, (4) adding an organo-lithium compound to the dried core particles in the organic solvent to produce the hairless core initiator, and (5) utilizing the hairless core initiator to initiate the anionic polymerization of a conjugated diolefin monomer in an organic solvent to produce a solution of the hairy polymer particles. The hairy polymer nanoparticles can then be recovered from the organic solvent. These hairy polymer particles are comprised of (1) a core which is comprised of a polymer of a vinyl aromatic monomer and (2) hairs which are polymer chains of a conjugated diolefin monomer, wherein the hairs are covalently bonded to the core.Type: ApplicationFiled: June 10, 2008Publication date: October 2, 2008Applicant: The Goodyear Tire & Rubber CompanyInventors: Lei Zheng, Eric Sean Castner, Thierry Florent Edme Materne
-
Patent number: 7408005Abstract: This invention discloses a process for synthesizing a hairy polymer particle which comprises the steps of (1) polymerizing a vinyl aromatic monomer by emulsion polymerization in an aqueous medium to produce core particles, (2) recovering the core particles from the aqueous medium, (3) dispersing the core particles in an organic solvent, (4) adding an organo-lithium compound to the dried core particles in the organic solvent to produce the hairless core initiator, and (5) utilizing the hairless core initiator to initiate the anionic polymerization of a conjugated diolefin monomer in an organic solvent to produce a solution of the hairy polymer particles. The hairy polymer nanoparticles can then be recovered from the organic solvent. These hairy polymer particles are comprised of (1) a core which is comprised of a polymer of a vinyl aromatic monomer and (2) hairs which are polymer chains of a conjugated diolefin monomer, wherein the hairs are covalently bonded to the core.Type: GrantFiled: March 5, 2005Date of Patent: August 5, 2008Assignee: The Goodyear Tire & Rubber CompanyInventors: Lei Zheng, Eric Sean Castner, Thierry Florent Edme Materne
-
Patent number: 7347237Abstract: This invention relates to a tread rubber composition for tires with the addition of crosslinked resinous nanoparticles having a high glass transition temperature (Tg) into elastomeric base polymers. The invention demonstrates greatly improved handling performance without deteriorating controllability and stability during high-speed running.Type: GrantFiled: February 28, 2006Date of Patent: March 25, 2008Assignee: The Goodyear Tire & Rubber CompanyInventors: Feng Anne Xie, Lei Zheng, Eric Sean Castner
-
Patent number: 7344752Abstract: The present invention discloses a process for producing a core-shell polymer that comprises: (1) preparing a monomer solution which is comprised of (a) at least one monomer, optional one crosslinking monomer (b) a conjugate acid of a surfactant with a pKa of less than 14, and (c) a controlled free radical polymerization agent; (2) preparing an aqueous medium which is comprised of (a) water, and (b) a conjugate base of a weak acid wherein the pKb of the base is less than 14; and (3) mixing the monomer solution with the aqueous medium under conditions that result in the in-situ formation of an emulsifier to produce a polymerization medium, and (4) initiating free radical polymerization within the polymerization medium to produce a core polymer, wherein the core contains a free radical control agents, (5) adding a second monomer to the polymerization medium containing the core polymer, and (6) allowing polymerization to proceed in the presence of the free radical control agent to produce the core-shell polymer.Type: GrantFiled: December 27, 2004Date of Patent: March 18, 2008Assignee: The Goodyear Tire & Rubber CompanyInventors: Lei Zheng, John Thomas Lean, Eric Sean Castner, Thierry Florent Edme Materne, Dane Kenton Parker, Frank James Feher
-
Patent number: 7244783Abstract: A thermoplastic elastomer composition comprised of (a) a thermoplastic resin selected from the group consisting of polyphenylene ether, polypropylene, polyethylene, and polystyrene, (b) a block copolymer selected from the group consisting of styrene-ethylene butylene-styrene, styrene-ethylene propylene-styrene, hydrogenated polybutadiene, hydrogenated polyisoprene, hydrogenated styrene-isoprene random copolymer, styrene-ethylene propylene block copolymer, styrene-ethylene ethylene propylene-styrene and hydrogenated styrene-butadiene random copolymers, (c) a core-shell polymer comprised of a polymeric core and a polymeric shell with the proviso that the polymeric core and/or the polymeric shell may be crosslinked, and (d) an oil.Type: GrantFiled: June 24, 2004Date of Patent: July 17, 2007Assignee: The Goodyear Tire & Rubber CompanyInventors: John Thomas Lean, Manoj Ajbani, Eric Sean Castner, Lei Zheng, Christopher Kiehl
-
Patent number: 7217775Abstract: A rubber composition having improved processability and which provides a vulcanized rubber exhibiting excellent wear resistance and good tensile strength to service temperatures of up to about 150° C. The composition comprises (1) a crosslinked polymer particle having as repeat units (a) up to about 25% of a conjugated diene unit, (b) at least 70% of an aromatic vinyl unit, (c) about 15% to about 30% of a crosslinking monomer, and (d) about 0.Type: GrantFiled: April 20, 2004Date of Patent: May 15, 2007Assignee: The Goodyear Tire & Rubber CompanyInventor: Eric Sean Castner
-
Patent number: 7109281Abstract: This invention relates to the reversible protection of hydroxy-silane functional groups by acid cleavable protecting groups. The development of reversible protecting groups greatly enhances the current utility of silanes while introducing further novel applications. For instance, reversibly protected silanes are of particular value in applications where room temperature cure and/or adhesion is of value, such as coatings, high resolution imaging, caulks, adhesives, sealants, gaskets, and silicones. Reversibly protected silanes can also be beneficially used in reticulating agents, and in sizing agents, tires, and release coatings. The incorporation of reversibly protected silanes into coating resins is of particular value. The reversibly protected silane can be incorporated into the coating resin by polymerizing a monomer containing the reversibly protected silane into the resin or by post-addition into the coating formulation.Type: GrantFiled: November 6, 2003Date of Patent: September 19, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: Daniel Edward Bowen, III, Eric Sean Castner
-
Patent number: 7084226Abstract: This invention relates to the reversible protection of hydroxy-silane functional groups by acid cleavable protecting groups. The development of reversible protecting groups greatly enhances the current utility of silanes while introducing further novel applications. For instance, reversibly protected silanes are of particular value in applications where room temperature cure and/or adhesion is of value, such as coatings, high resolution imaging, caulks, adhesives, sealents, gaskets, and silicones. Reversibly protected silanes can also be beneficially used in reticulating agents, and in sizing agents, tires, and release coatings. The incorporation of reversibly protected silanes into coating resins is of particular value. The reversibly protected silane can be incorporated into the coating resin by polymerizing a monomer containing the reversibly protected silane into the resin or by post-addition into the coating formulation.Type: GrantFiled: October 28, 2003Date of Patent: August 1, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: Daniel Edward Bowen, III, Eric Sean Castner