Patents by Inventor Mark L. Stayer, Jr.
Mark L. Stayer, Jr. 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: 6451935Abstract: A process for preparing highly functionalized polymers comprising the steps of admixing anionically-polymerizable monomers and at least one anionic-polymerization initiator to form an admixture of living polymers, adding at least one lithium alkoxide stabilizer to the admixture of living polymers to form a stabilized admixture, and adding a functionalizing agent to the stabilized admixture.Type: GrantFiled: May 10, 2000Date of Patent: September 17, 2002Assignee: Bridgestone CorporationInventors: John R. Schreffler, Mark L. Stayer, Jr., Thomas A. Antkowiak
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Patent number: 6349753Abstract: A tire component comprising a plurality of elastomers, where at least one of said elastomers has a functional group defined by the formula where R1 is selected from the group consisting of a divalent alkylene group, an oxy-alkylene group, an amino alkylene group, and a substituted alkylene group, each group having from about 6 to about 20 carbon atoms, and R2 is covalently bonded to the elastomer and is selected from the group consisting of a linear-alkylene group, a branched-alkylene group, and a cyclo-alkylene group, each group having from about 2 to about 20 carbon atoms.Type: GrantFiled: June 27, 2000Date of Patent: February 26, 2002Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr., John R. Schreffler
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Patent number: 6080835Abstract: A functionialized polymer according to the invention includes a polymer molecule having the general formula AYLi where A is a cyclic amine-containing radical having the general formula ##STR1## wherein R.sub.1 is a divalent alkylene, an oxy- or amino-alkylene, or substituted alkylene having from 6 to about 20 carbon atoms; R.sub.2 is a linear-, branched-, or cyclo-alkylene having from about 2 to about 20 carbon atoms; and Y is a divalent polymer radical and Li is a lithium atom bonded to a carbon atom of Y.Type: GrantFiled: September 24, 1997Date of Patent: June 27, 2000Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr., John R. Schreffler
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Patent number: 6025450Abstract: A functionalized polymer includes a polymer chain carrying at least one functional group selected from alkyl, dialkyl and cycloalkyl amine radicals having the general formula ##STR1## and cyclic amine radicals having the general formula ##STR2## where R.sub.1 is an alkyl, cycloalkyl or aralkyl having from 1 to about 12 carbon atoms, and R.sub.2 is an alkylene, substituted alkylene, oxy- or N-alkylamino-alkylene group having from about 3 to about 16 methylene groups. The invention also provides products based upon such polymers.Type: GrantFiled: July 9, 1998Date of Patent: February 15, 2000Assignee: Bridgestone CorporationInventors: David F. Lawson, Mark L. Stayer, Jr., David Saffles, Koichi Morita, Yoichi Ozawa, Ryota Fujio, Thomas A. Antkowiak
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Patent number: 5932662Abstract: A functionalized polymer according to the invention includes a polymer molecule having the general formula AYLi where A is a cyclic amine-containing radical having the general formula ##STR1## wherein R.sub.1 is a divalent alkylene, an oxy- or amino-alkylene, or substituted alkylene having from 6 to about 20 carbon atoms; R.sub.2 is a linear-, branched-, or cyclo-alkylene having from about 2 to about 20 carbon atoms; and Y is a divalent polymer radical and Li is a lithium atom bonded to a carbon atom of Y.Type: GrantFiled: November 7, 1996Date of Patent: August 3, 1999Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr., John R. Schreffler
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Patent number: 5792820Abstract: An organolithium compound according to the present invention containing a cyclic amino group, has the general formula: ##STR1## wherein R.sub.1 is a divalent alkylene, an oxy- or amino-alkylene, or substituted alkylene having from 6 to about 20 carbon atoms; R.sub.2 is a linear-, branched-, or cyclo-alkylene having from about 2 to about 20 carbon atoms; and the lithium, Li, is bonded directly to a carbon atom of R.sub.2. A method of preparing an organolithium compound containing a cyclic amino group, comprising reacting a cyclic amino organo halide having the general formula ##STR2## where R.sub.1 and R.sub.2 are as above, and X is bromine or chlorine bonded directly to a carbon atom of R.sub.2, with a lithium reactant selected from lithium metal or an organolithium compound.Type: GrantFiled: February 23, 1996Date of Patent: August 11, 1998Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr., John R. Schreffler
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Patent number: 5785778Abstract: A functionalized polymer according to the invention includes a polymer molecule having the general formula AYLi where A is a cyclic amine-containing radical having the general formula ##STR1## wherein R.sub.1 is a divalent alkylene, an oxy- or amino-alkylene, or substituted alkylene having from 6 to about 20 carbon atoms; R.sub.2 is a linear-, branched-, or cyclo-alkylene having from about 2 to about 20 carbon atoms; and Y is a divalent polymer radical and Li is a lithium atom bonded to a carbon atom of Y.Type: GrantFiled: March 7, 1997Date of Patent: July 28, 1998Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr., John R. Schreffler
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Patent number: 5698646Abstract: The present invention is directed toward anionic polymerization employing lithio aldimines mixed with an organic alkali metal compound and optionally, a chelating reagent. The lithio aldimines have the general formula (A)Li, where A is derived from a substituted aldimine. The invention is also directed toward polymers and other products made using the initiator, and methods therefor. Further, the invention contemplates a polymer, a polymer composition and products therefrom, which include a functional group from the reaction product of a substituted aldimine and an organolithium compound. The resulting polymers may be modified with a terminating, coupling or linking agent, which may provide the polymer with a multifunctionality.Type: GrantFiled: June 6, 1995Date of Patent: December 16, 1997Assignee: Bridgestone CorporationInventors: Takashi Kitamura, Mark L. Stayer, Jr., Akira Matsuda
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Patent number: 5659056Abstract: The present invention relates to a method of reducing hydrolysis and coupling of substituents of siloxane end capped polymers containing hydrolyzable substituents during contact with water. The Mooney viscosity of siloxane terminated polymers is stabilized during such contact by treating the polymer with a stabilizing amount of stabilizing agent selected from the group consisting of: an acid, an acyl halide, methane sulfonic acid, toluene sulfonic acid, sulfuryl chloride, thionylchloride, phosgene, carbon dioxide, sulfur dioxide, sulfur trioxide, SOCl.sub.2 and SO.sub.2 Cl.sub.2, prior to contacting the siloxane terminated polymer with water.Type: GrantFiled: April 10, 1996Date of Patent: August 19, 1997Assignee: Bridgestone CorporationInventors: William L. Hergenrother, David M. Roggeman, Daniel F. Graves, Mark L. Stayer, Jr.
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Patent number: 5616704Abstract: The present invention is directed toward anionic polymerization initiators which are soluble in acyclic alkane solvents. The initiators include a solubilized lithio amine having the general formula (A)Li(SOL).sub.y. SOL is a solubilizing component and A is an alkyl, dialkyl or cycloalkyl amine radical or a cyclic amine and y is from about 1 to 4. The cyclic amine has an alkylene, oxy- or amino-alkylene group having from about 3 to about 16 methylene groups. The invention is also directed toward polymers and other products made using the initiator, and methods therefor. Further, the invention contemplates a polymer, a polymer composition and products therefrom, which include a functional group from the reaction product of an amine and an organolithium compound. The resulting polymers may be terminated with a terminating, coupling or linking agent, which may provide the polymer with a multifunctionality.Type: GrantFiled: April 29, 1996Date of Patent: April 1, 1997Assignee: Bridgestone CorporationInventors: David F. Lawson, Mark L. Stayer, Jr., David Saffles, H. James Harwood
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Patent number: 5610228Abstract: An anionic polymerization initiator includes a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A method of preparing an anionic polymerization initiator includes reacting an excess of a cyclic secondary amine with a conjugated diene to form an adduct; and, reacting the adduct with an organolithium compound. A method of preparing a polymer includes forming a solution of one or more anionically polymerizable monomers in a hydrocarbon solvent; and, polymerizing the monomer with an anionic polymerization initiator comprising a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A functionalized polymer includes the termination product of a living polymer having the general formula AYLi, wherein A is a functional group derived from an anionic polymerization initiator; and, Y is a divalent polymer radical; wherein the anionic polymerization initiator is a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene.Type: GrantFiled: June 6, 1995Date of Patent: March 11, 1997Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr.
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Patent number: 5610237Abstract: A functionalized polymer according to the invention includes a polymer molecule having the general formula AYLi where A is a cyclic amine-containing radical having the general formula ##STR1## wherein R.sub.1 is a divalent alkylene, an oxy- or amino-alkylene, or substituted alkylene having from 6 to about 20 carbon atoms; R.sub.2 is a linear-, branched-, or cyclo-alkylene having from about 2 to about 20 carbon atoms; and Y is a divalent polymer radical and Li is a lithium atom bonded to a carbon atom of Y.Type: GrantFiled: June 4, 1996Date of Patent: March 11, 1997Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr., John R. Schreffler
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Patent number: 5574109Abstract: A functionalized polymer according to the invention includes a polymer molecule having the general formula AYLi where A is a cyclic amine-containing radical having the general formula ##STR1## R.sub.1 is a divalent alkylene, an oxy- or amino-alkylene, or substituted alkylene having from 6 to about 20 carbon atoms; R.sub.2 is a linear-, branched-, or cyclo-alkylene having from about 2 to about 20 carbon atoms; and Y is a divalent polymer radical and Li is a lithium atom bonded to a carbon atom of Y.Type: GrantFiled: February 1, 1995Date of Patent: November 12, 1996Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr., John R. Schreffler
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Patent number: 5552473Abstract: The present invention is directed toward anionic polymerization initiators which are soluble in acyclic alkane solvents. The initiators include a solubilized lithio amine having the general formula (A)Li(SOL).sub.y. SOL is a solubilizing component and A is an alkyl, dialkyl or cycloalkyl amine radical or a cyclic amine and y is from about 1 to 4. The cyclic amine has an alkylene, oxy- or amino-alkylene group having from about 3 to about 16 methylene groups. The invention is also directed toward polymers and other products made using the initiator, and methods therefor. Further, the invention contemplates a polymer, a polymer composition and products therefrom, which include a functional group from the reaction product of an amine and an organolithium compound. The resulting polymers may be terminated with a terminating, coupling or linking agent, which may provide the polymer wtih a multifunctionality.Type: GrantFiled: June 5, 1995Date of Patent: September 3, 1996Assignee: Bridgestone CorporationInventors: David F. Lawson, Mark L. Stayer, Jr., David Saffles
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Patent number: 5536801Abstract: An anionic polymerization initiator includes the C-lithio reaction product of an organolithium compound and a tertiary-amino allyllithium or a tertiary-amino xylyllithium. When used in an anionic polymerization, a functional group from the initiator is incorporated onto the head of the growing polymer and a lithium atom is incorporated at the "living" end of the polymer chain prior to quenching. The initiator may be used to polymerize a monomer(s) including diolefin monomers, monovinyl aromatic monomers and trienes, and the living ends of the polymers are effectively maintained even at temperatures of up to 300.degree. F. and higher. Such polymers exhibit an increased efficiency in coupling termination reactions, and products prepared from such polymers exhibit improved hysteresis characteristics. Products such as tires and the like can be prepared from such polymers and from vulcanizable elastomer compositions employing the polymers.Type: GrantFiled: June 6, 1995Date of Patent: July 16, 1996Assignee: Bridgestone CorporationInventors: Thomas A. Antkowiak, James E. Hall, David F. Lawson, John R. Schreffler, Mark L. Stayer, Jr.
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Patent number: 5523371Abstract: A vulcanizable elastomeric compound and products such as pneumatic tires and the like, are formed from a functionalized polymer having a functional group derived from an anionic polymerization initiator. The anionic polymerization initiator comprises the general formula ##STR1## where R.sup.1 -R.sup.5 are the same or different and are selected from the group consisting of hydrogen; alkyls having from alkyls having from 1 to about 12 carbon atoms; aralkyls having from 7 to about 20 carbon atoms; dialkylaminos having from 2 to about 20 carbon atoms; and, dialkylaminoalkyls having from 3 to about 20 carbon atoms. At least one of R.sup.1 -R.sup.5 is selected from the group consisting of the dialkylaminos and the dialkylaminoalkyls. Methods of the present invention include preparing functionalized polymers and reducing the hysteresis of vulcanizable elastomeric compounds.Type: GrantFiled: April 7, 1995Date of Patent: June 4, 1996Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, Mark L. Stayer, Jr., John R. Schreffler, Hideki Komatsu
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Patent number: 5521309Abstract: An anionic polymerization initiator includes the C-lithio reaction product of an organolithium compound and a tertiary-amino allyllithium or a tertiary-amino xylyllithium. When used in an anionic polymerization, a functional group from the initiator is incorporated onto the head of the growing polymer and a lithium atom is incorporated at the "living" end of the polymer chain prior to quenching. The initiator may be used to polymerize a monomer(s) including diolefin monomers, monovinyl aromatic monomers and trienes, and the living ends of the polymers are effectively maintained even at temperatures of up to 300.degree. F. and higher. Such polymers exhibit an increased efficiency in coupling termination reactions, and products prepared from such polymers exhibit improved hysteresis characteristics. Products such as tires and the like can be prepared from such polymers and from vulcanizable elastomer compositions employing the polymers.Type: GrantFiled: December 23, 1994Date of Patent: May 28, 1996Assignee: Bridgestone CorporationInventors: Thomas A. Antkowiak, James E. Hall, David F. Lawson, John R. Schreffler, Mark L. Stayer, Jr.
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Patent number: 5519086Abstract: A vulcanizable elastomeric compound and products such as pneumatic tires and the like, are formed from a functionalized polymer having a functional group derived from an anionic polymerization initiator. The anionic polymerization initiator comprises the general formula ##STR1## where R.sup.1 -R.sup.5 are the same or different and are selected from the group consisting of hydrogen; alkyls having from alkyls having from 1 to about 12 carbon atoms; aralkyls having from 7 to about 20 carbon atoms; dialkylaminos having from 2 to about 20 carbon atoms; and, dialkylaminoalkyls having from 3 to about 20 carbon atoms. At least one of R.sup.1 -R.sup.5 is selected from the group consisting of the dialkylaminos and the dialkylaminoalkyls. Methods of the present invention include preparing functionalized polymers and reducing the hysteresis of vulcanizable elastomeric compounds.Type: GrantFiled: April 7, 1995Date of Patent: May 21, 1996Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, Mark L. Stayer, Jr., John R. Schreffler, Hideki Komatsu
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Patent number: 5502130Abstract: An anionic polymerization initiator includes a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A method of preparing an anionic polymerization initiator includes reacting an excess of a cyclic secondary amine with a conjugated diene to form an adduct; and, reacting the adduct with an organolithium compound. A method of preparing a polymer includes forming a solution of one or more anionically polymerizable monomers in a hydrocarbon solvent; and, polymerizing the monomer with an anionic polymerization initiator comprising a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene. A functionalized polymer includes the termination product of a living polymer having the general formula AYLi, Wherein A is a functional group derived from an anionic polymerization initiator; and, Y is a divalent polymer radical; wherein the anionic polymerization initiator is a carbon-lithio salt of the adduct of a cyclic secondary amine with a conjugated diene.Type: GrantFiled: June 6, 1995Date of Patent: March 26, 1996Assignee: Bridgestone CorporationInventors: David F. Lawson, Thomas A. Antkowiak, James E. Hall, Mark L. Stayer, Jr.
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Patent number: 5502131Abstract: An anionic polymerization initiator includes the C-lithio reaction product of an organolithium compound and a tertiary-amino allyllithium or a tertiary-amino xylyllithium. When used in an anionic polymerization, a functional group from the initiator is incorporated onto the head of the growing polymer and a lithium atom is incorporated at the "living" end of the polymer chain prior to quenching. The initiator may be used to polymerize a monomer(s) including diolefin monomers, monovinyl aromatic monomers and trienes, and the living ends of the polymers are effectively maintained even at temperatures of up to 300.degree. F. and higher. Such polymers exhibit an increased efficiency in coupling termination reactions, and products prepared from such polymers exhibit improved hysteresis characteristics. Products such as tires and the like can be prepared from such polymers and from vulcanizable elastomer compositions employing the polymers.Type: GrantFiled: June 6, 1995Date of Patent: March 26, 1996Assignee: Bridgestone CorporationInventors: Thomas A. Antkowiak, James E. Hall, David F. Lawson, John R. Schreffler, Mark L. Stayer, Jr.