Patents by Inventor Georg G. A. Böhm
Georg G. A. Böhm 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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Publication number: 20120108755Abstract: Branched polymers including multi-branched polymers, functionalized branched polymers, star-branched polymers, and dendigraft polymers. Methods for the synthesis of branched polymers and method for the use of branched polymers in tire components are also included.Type: ApplicationFiled: January 6, 2012Publication date: May 3, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Christopher G. Robertson, Sandra Warren, James Hall, Georg G. A. Böhm, Mark Arigo, Steven Luo, Hiroshi Mouri, Jessica Kurasch, Noriko Mori
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Patent number: 8119736Abstract: Branched polymers including multi-branched polymers, functionalized branched polymers, star-branched polymers, and dendigraft polymers. Methods for the synthesis of branched polymers and method for the use of branched polymers in tire components are also included.Type: GrantFiled: October 5, 2007Date of Patent: February 21, 2012Assignee: Bridgestone CorporationInventors: Christopher G. Robertson, Sandra Warren, James Hall, Georg G. A. Böhm, Mark Arigo, Noriko Mori
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Patent number: 7964656Abstract: A method for forming a vulcanizable composition of matter, the method comprising providing a polymer cement or latex comprising at least one rubber, adding at least one processing aid to the cement or latex to form a modified rubber cement or latex, isolating the rubber and at least one processing aid to form a premix, and mixing the premix with carbon black.Type: GrantFiled: February 1, 2007Date of Patent: June 21, 2011Assignee: Bridgestone CorporationInventors: Georg G. A. Böhm, Anthony J. Ramic, James D. Ulmer, William L. Hergenrother, Christine M. Rademacher, David F. Lawson, Sunil B. Sarkar
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Patent number: 7951876Abstract: A multi-functional polymer defined by the formula (Q-R¦n—Z—P2—Y where (Q-R)n is a functionality cluster, Q is a functional group, R is a multi-valent organic group, P2 is a long-chain polymer, n is an integer from about 2 to about 10, Y is a proton, a weak functional group, or a selective functional group, and Z is a branch point where the functionality clusters join the long-chain polymer.Type: GrantFiled: March 16, 2007Date of Patent: May 31, 2011Assignee: Bridgestone CorporationInventors: Georg G. A. Böhm, William L. Hergenrother, Christine M. Rademacher, Christopher G. Robertson
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Patent number: 7897690Abstract: A polymer nanoparticle is provided. The nanoparticle includes an inner layer having alkenylbenzene monomer units. The nanoparticle further includes an outer layer having monomer units selected from conjugated dienes, alkylenes, alkenylbenzenes, and mixtures thereof. The nanoparticle has at least one functional group associated with the outer layer. Applications of use as additives for rubber, including the rubber compositions, are also provided.Type: GrantFiled: July 16, 2009Date of Patent: March 1, 2011Assignee: Bridgestone CorporationInventors: Xiaorong Wang, James E. Hall, Georg G. A. Böhm, Chenchy Jeffrey Lin
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Patent number: 7790798Abstract: Methods are provided for making solution masterbatches containing a diene elastomer in an organic solvent and a silica filler, having a first average particle size, that is ground in an organic solvent to form a silica having a reduced second average particle size. Grinding of the silica in the organic solvent, with or without other ingredients including the elastomer, produces a solution masterbatch in which the silica is mixed with and well dispersed in the elastomer. The use of such desolventized solution masterbatches in vulcanizable rubber compounds results in excellent processing characteristics allowing for the reduced use of processing aids such as oil. The compound also demonstrates improved properties, including reduced hysteresis.Type: GrantFiled: December 29, 2005Date of Patent: September 7, 2010Assignee: Bridgestone CorporationInventors: Zhong-Ren Chen, Sanjeev D. Naik, William M. Cole, Georg G. A. Böhm
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Publication number: 20100137520Abstract: Branched polymers including multi-branched polymers, functionalized branched polymers, star-branched polymers, and dendigraft polymers. Methods for the synthesis of branched polymers and method for the use of branched polymers in tire components are also included.Type: ApplicationFiled: October 5, 2007Publication date: June 3, 2010Inventors: Christopher G. Robertson, Sandra Warren, James Hall, Georg G.A. Böhm, Mark Arigo, Steven Luo, Hiroshi Mouri, Jessica Kurasch, Noriko Mori
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Patent number: 7718738Abstract: A polymer nano-particle composition is provided, wherein the nano-particle includes a poly(alkenylbenzene) core and a surface layer including poly(conjugated diene). A method for self-assembly of the nano-particles is also provided. The polymer nano-particles are preferably less than about 100 nm in diameter.Type: GrantFiled: April 29, 2005Date of Patent: May 18, 2010Assignee: Bridgestone CorporationInventors: Georg G. A. Böhm, Xiaorong Wang, Chenchy Jeffrey Lin, James E. Hall, Sandra Warren, James A. Krom, Hajime Kondo, Koichi Morita
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Patent number: 7718737Abstract: A polymer nanoparticle is provided. The nanoparticle includes an inner layer having alkenylbenzene monomer units. The nanoparticle further includes an outer layer having monomer units selected from conjugated dienes, alkylenes, alkenylbenzenes, and mixtures thereof. The nanoparticle has at least one functional group associated with the outer layer. Applications of use as additives for rubber, including the rubber compositions, are also provided.Type: GrantFiled: March 2, 2004Date of Patent: May 18, 2010Assignee: Bridgestone CorporationInventors: Xiaorong Wang, James E. Hall, Georg G. A. Böhm, Chenchy Jeffrey Lin
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Publication number: 20100016472Abstract: A polymer nanoparticle is provided. The nanoparticle includes an inner layer having alkenylbenzene monomer units. The nanoparticle further includes an outer layer having monomer units selected from conjugated dienes, alkylenes, alkenylbenzenes, and mixtures thereof. The nanoparticle has at least one functional group associated with the outer layer. Applications of use as additives for rubber, including the rubber compositions, are also provided.Type: ApplicationFiled: July 16, 2009Publication date: January 21, 2010Inventors: Xiaorong Wang, James E. Hall, Georg G.A. Böhm, Chenchy Jeffrey Lin
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Patent number: 7576155Abstract: A polymer composition of low gas permeability. The composition includes an exfoliated organically-modified clay, butyl rubber, and a polymeric exfoliant. A method for producing the butyl composition by dry mixing the butyl rubber with the exfoliated clay is also provided.Type: GrantFiled: December 18, 2003Date of Patent: August 18, 2009Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Hiroyuki Fudemoto, James E. Hall, Shunji Araki, Terrence Hogan, Victor J. Foltz, Pat Sadhukhan, Georg G. A. Böhm
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Patent number: 7560510Abstract: Provided are enophile functionalized polymer particles, nano-sized inorganic metal particles such as Al(OH)3 particles, and preparations thereof. Also provided is a method of improving the properties of a rubber composition, such as a tire, by formulating the rubber to incorporate nano-sized inorganic metal particles such as Al(OH)3. The composition exhibits improved properties including bonding rubber, tensile strength, tear strength, and wet traction, among others. A novel rubber composition comprising nano-sized inorganic metal particles is also disclosed.Type: GrantFiled: December 20, 2006Date of Patent: July 14, 2009Assignee: Bridgestone CorporationInventors: Xiaorong Wang, Georg G. A. Böhm
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Patent number: 7378465Abstract: A tire component including a tire tread that comprises a vulcanized rubber, a rubber filler, and a modified rubber, where the modified rubber i) contains pendent or functional groups that contain carboxylic acid or anhydride groups, ii) has pendently grafted thereto a polymerized metal salt of an unsaturated carboxylic acid, or iii) contains both i and ii. The use of such modified rubbers in tire components advantageously increases the G? of such components.Type: GrantFiled: April 4, 2002Date of Patent: May 27, 2008Assignee: Bridgestone CorporationInventors: Chenchy Jeffrey Lin, William Hergenrother, Daniel Graves, Georg G. A. Böhm
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Patent number: 7250476Abstract: A multi-functional polymer defined by the formula (Q—RnZ—P2—Y where (Q—R)n is a functionality cluster, Q is a functional group, R is a multi-valent organic group, P2 is a long-chain polymer, n is an integer from about 2 to about 10, Y is a proton, a weak functional group, or a selective functional group, and Z is a branch point where the functionality clusters join the long-chain polymer.Type: GrantFiled: August 1, 2003Date of Patent: July 31, 2007Assignee: Bridgestone CorporationInventors: Georg G. A. Böhm, William L. Hergenrother, Christine M. Rademacher
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Patent number: 7112369Abstract: A polymer nanoparticle is provided. The nanoparticle includes an inner layer having alkenylbenzene monomer units. The nanoparticle further includes an outer layer having monomer units selected from conjugated dienes, alkylenes, alkenylbenzenes, and mixtures thereof. The nanoparticle has at least one functional group associated with the outer layer. The nanoparticle further has at least one metal complexed with said functional group. The nanoparticles can be used as a templates for preparation of nano-sized metal crystals and polymer-metal nanocomposite.Type: GrantFiled: March 2, 2004Date of Patent: September 26, 2006Assignee: Bridgestone CorporationInventors: Xiaorong Wang, James E. Hall, Georg G. A. Böhm, Chenchy Jeffrey Lin
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Patent number: 6384150Abstract: Novel solid supported anionic polymerization initiators that are multiply metalated with Group IA alkali metal atoms are provided and employed to produce extremely high molecular weight branched diene polymers. The initiators are prepared by metalating a particle comprising a thermoplastic polymer or a cured elastomer in the presence of a polar coordinator. The polymers obtained by anionic polymerization employing the initiators are multiply branched, with a polymer chain covalently attached to the particle at virtually every metalation site. The macro-branched polymers exhibit desirable properties, such as an extremely high molecular weight, a controlled molecular weight distribution, Tg and vinyl content, and the ability to readily absorb hydrocarbon solvents and oils. The polymers are easily compounded to form vulcanizable elastomeric compounds and articles that have excellent resistance to wear and tear and exhibit reduced hysteresis properties.Type: GrantFiled: May 10, 2001Date of Patent: May 7, 2002Assignee: Bridgestone CorporationInventors: William L. Hergenrother, William M. Cole, Theodore J. Knutson, Georg G. A. Böhm
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Patent number: 6359087Abstract: The invention provides solid supported anionic catalysts, suitable for gas phase anionic polymerization of conjugated diene monomers, that are useful for anionically producing very high molecular weight branched diene polymers, such as styrene butadiene rubber, polybutadiene rubber, polyisoprene rubber, and the like. The catalysts comprise a metalatable particle, such as a bound rubber, a thermoplastic polymer or a cured elastomer, that is multiply metalated with Group IA alkali metal atoms. The multi-branched diene polymers obtained by gas phase anionic polymerization employing the catalysts exhibit desirable properties, such as an extremely high molecular weight, a controlled molecular weight distribution, Tg and vinyl content, and the ability to readily absorb hydrocarbon solvents and oils. The polymers are easily compounded to form vulcanizable elastomeric compounds and articles, such as tires, that have excellent resistance to wear and tear and exhibit reduced hysteresis properties.Type: GrantFiled: November 23, 1999Date of Patent: March 19, 2002Assignee: Bridgestone CorporationInventors: William M. Cole, William L. Hergenrother, Theodore J. Knutson, Georg G. A. Böhm
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Patent number: 6271314Abstract: Novel solid supported anionic polymerization initiators that are multiply metalated with Group IA alkali metal atoms are provided and employed to produce extremely high molecular weight branched diene polymers. The initiators are prepared by metalating a particle comprising a thermoplastic polymer or a cured elastomer in the presence of a polar coordinator. The polymers obtained by anionic polymerization employing the initiators are multiply branched, with a polymer chain covalently attached to the particle at virtually every metalation site. The macro-branched polymers exhibit desirable properties, such as an extremely high molecular weight, a controlled molecular weight distribution, Tg and vinyl content, and the ability to readily absorb hydrocarbon solvents and oils. The polymers are easily compounded to form vulcanizable elastomeric compounds and articles that have excellent resistance to wear and tear and exhibit reduced hysteresis properties.Type: GrantFiled: May 11, 2000Date of Patent: August 7, 2001Assignee: Bridgestone CorporationInventors: William L. Hergenrother, William M. Cole, Theodore J. Knutson, Georg G. A. Böhm
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Patent number: 6258886Abstract: The invention provides solid supported anionic catalysts, suitable for gas phase anionic polymerization of conjugated diene monomers, that are useful for anionically producing very high molecular weight branched diene polymers, such as styrene butadiene rubber, polybutadiene rubber, polyisoprene rubber, and the like. The catalysts comprise a metalatable particle, such as a bound rubber, a thermoplastic polymer or a cured elastomer, that is multiply metalated with Group IA alkali metal atoms. The multi-branched diene polymers obtained by gas phase anionic polymerization employing the catalysts exhibit desirable properties, such as an extremely high molecular weight, a controlled molecular weight distribution, Tg and vinyl content, and the ability to readily absorb hydrocarbon solvents and oils. The polymers are easily compounded to form vulcanizable elastomeric compounds and articles, such as tires, that have excellent resistance to wear and tear and exhibit reduced hysteresis properties.Type: GrantFiled: November 23, 1999Date of Patent: July 10, 2001Assignee: Bridgestone CorporationInventors: William M. Cole, William L. Hergenrother, Theodore J. Knutson, Georg G. A. Böhm
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Patent number: 6255406Abstract: The invention provides solid supported anionic catalysts, suitable for gas phase anionic polymerization of conjugated diene monomers, that are useful for anionically producing very high molecular weight branched diene polymers, such as styrene butadiene rubber, polybutadiene rubber, polyisoprene rubber, and the like. The catalysts comprise a metalatable particle, such as a bound rubber, a thermoplastic polymer or a cured elastomer, that is multiply metalated with Group IA alkali metal atoms. The multi-branched diene polymers obtained by gas phase anionic polymerization employing the catalysts exhibit desirable properties, such as an extremely high molecular weight, a controlled molecular weight distribution, Tg and vinyl content, and the ability to readily absorb hydrocarbon solvents and oils. The polymers are easily compounded to form vulcanizable elastomeric compounds and articles, such as tires, that have excellent resistance to wear and tear and exhibit reduced hysteresis properties.Type: GrantFiled: November 23, 1999Date of Patent: July 3, 2001Assignee: Bridgestone CorporationInventors: William M. Cole, William L. Hergenrother, Theodore J. Knutson, Georg G. A. Böhm