Patents by Inventor Chad Aaron Jasiunas
Chad Aaron Jasiunas 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: 7153805Abstract: The subject invention relates to a process for preparing a catalyst system that comprises the sequential steps of (I) reacting an organometalic compound that contains a metal from Group III-B of the Periodic System with an organoaluminum compound at a temperature which is within the range of 50° C. to 100° C.Type: GrantFiled: September 30, 2005Date of Patent: December 26, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: Wen-Liang Hsu, Adel Farhan Halasa, Chad Aaron Jasiunas
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Patent number: 7091150Abstract: The neodymium catalyst system prepared by the technique of this invention can be used in the polymerization of isoprene monomer into synthetic polyisoprene rubber having an extremely high cis-microstructure content and high stereo regularity. This polyisoprene rubber will crystallize under strain and can be compounded into rubber formulations in a manner similar to natural rubber. This invention more specifically discloses a process for preparing a neodymium catalyst system which comprises (1) reacting a neodymium carboxylate with an organoaluminum compound in an organic solvent to produce neodymium-aluminum catalyst component, and (2) subsequently reacting the neodymium-aluminum catalyst component with an elemental halogen to produce the neodymium catalyst system. The present invention further discloses a synthetic polyisoprene rubber which is comprised of repeat units that are derived from isoprene, wherein the synthetic polyisoprene rubber has a cis-microstructure content which is within the range of 98.Type: GrantFiled: September 16, 2004Date of Patent: August 15, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Aaron Michael Ryba, Jin-Ping Zhou, Chad Aaron Jasiunas, Paul Harry Sandstrom
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Patent number: 7022783Abstract: The subject invention relates to a technique for synthesizing rubbery non-tapered, random, copolymers of 1,3-butadiene and isoprene. These rubbery copolymers exhibit an excellent combination of properties for utilization in tire sidewall rubber compounds for truck tires. By utilizing these isoprene-butadiene rubbers in tire sidewalls, tires having improved cut growth resistance can be built without sacrificing rolling resistance. Such rubbers can also be employed in tire tread compounds to improve tread wear characteristics and decrease rolling resistance without sacrificing traction characteristics.Type: GrantFiled: January 27, 2004Date of Patent: April 4, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: Wen-Liang Hsu, Adel Farhan Halasa, Chad Aaron Jasiunas
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Patent number: 6995224Abstract: This invention discloses a process for synthesizing an amine functionalized monomer that comprises (1) reacting a secondary amine with a 2,3-dihalopropene to produce a vinyl halide containing secondary amine having a structural formula selected from the group consisting of wherein R and R? can be the same or different and represent allyl, alkoxyl or alkyl groups containing from 1 to about 10 carbon atoms, and wherein X represents a halogen atom, and wherein m represents an integer from 4 to about 10, and wherein X represents a halogen atom; and (2) reacting the vinyl halide containing secondary amine with a vinyl magnesium halide to produce the monomer having a structural formula wherein R and R? can be the same or different and represent alkyl, allyl or alkoxyl groups containing from 1 to about 10 carbon atoms, and wherein m represents an integer from about 4 to about 10.Type: GrantFiled: January 26, 2005Date of Patent: February 7, 2006Assignee: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Jin-Ping Zhou, Chad Aaron Jasiunas
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Patent number: 6936669Abstract: This invention discloses a process for synthesizing an amine functionalized monomer that comprises (1) reacting a secondary amine with a 2,3-dihalopropene to produce a vinyl halide containing secondary amine having a structural formula selected from the group consisting of wherein R and R? can be the same or different and represent allyl, alkoxyl or alkyl groups containing from 1 to about 10 carbon atoms, and wherein X represents a halogen atom, and wherein m represents an integer from 4 to about 10, and wherein X represents a halogen atom; and (2) reacting the vinyl halide containing secondary amine with a vinyl magnesium halide to produce the monomer having a structural formula wherein R and R? can be the same or different and represent alkyl, allyl or alkoxyl groups containing from 1 to about 10 carbon atoms, and wherein m represents an integer from about 4 to about 10.Type: GrantFiled: December 9, 2003Date of Patent: August 30, 2005Assignee: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Jin-Ping Zhou, Chad Aaron Jasiunas, Corey Stanton Yon
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Patent number: 6933358Abstract: This invention discloses a process for synthesizing an amine functionalized monomer that comprises (1) reacting a secondary amine with a 2,3-dihalopropene to produce a vinyl halide containing secondary amine having a structural formula selected from the group consisting of wherein R and R? can be the same or different and represent allyl, alkoxyl or alkyl groups containing from 1 to about 10 carbon atoms, and wherein X represents a halogen atom, and wherein m represents an integer from 4 to about 10, and wherein X represents a halogen atom; and (2) reacting the vinyl halide containing secondary amine with a vinyl magnesium halide to produce the monomer having a structural formula wherein R and R? can be the same or different and represent alkyl, allyl or alkoxyl groups containing from 1 to about 10 carbon atoms, and wherein m represents an integer from about 4 to about 10.Type: GrantFiled: March 14, 2003Date of Patent: August 23, 2005Assignee: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Jin-Ping Zhou, Chad Aaron Jasiunas, Corey Stanton Yon
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Patent number: 6812277Abstract: Pneumatic rubber tire having at least one component or a rubber composition comprised of a major portion of relatively low Tg high cis 1,4-polybutadiene elastomer (BR) and a minor portion of a relatively high Tg, styrene-rich, styrene/isoprene elastomer (SIR) wherein the Tg of said BR is at least 60° C. lower than the Tg of said SIR. Said SIR has a styrene content of at least 30 weight percent. The styrene based units of said SIR are present substantially without large blocks of styrene units. Said BR is a high cis 1,4-polybutadiene having a cis 1,4-content of at least 96 percent and preferably has a branched macrostructure. In one aspect of the invention, said tire component is a tire tread, particularly a circumferential tire tread.Type: GrantFiled: October 31, 2001Date of Patent: November 2, 2004Assignee: The Goodyear Tire & Rubber CompanyInventors: David John Zanzig, Adel Farhan Halasa, Chad Aaron Jasiunas
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Publication number: 20040186252Abstract: The subject invention relates to a technique for synthesizing rubbery non-tapered, random, copolymers of 1,3-butadiene and isoprene. These rubbery copolymers exhibit an excellent combination of properties for utilization in tire sidewall rubber compounds for truck tires. By utilizing these isoprene-butadiene rubbers in tire sidewalls, tires having improved cut growth resistance can be built without sacrificing rolling resistance. Such rubbers can also be employed in tire tread compounds to improve tread wear characteristics and decrease rolling resistance without sacrificing traction characteristics.Type: ApplicationFiled: January 27, 2004Publication date: September 23, 2004Inventors: Wen-Liang Hsu, Adel Farhan Halasa, Chad Aaron Jasiunas
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Publication number: 20040122194Abstract: This invention discloses a process for synthesizing an amine functionalized monomer that comprises (1) reacting a secondary amine with a 2,3-dihalopropene to produce a vinyl halide containing secondary amine having a structural formula selected from the group consisting of 1Type: ApplicationFiled: December 9, 2003Publication date: June 24, 2004Applicant: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Jin-Ping Zhou, Chad Aaron Jasiunas, Corey Stanton Yon
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Publication number: 20040122224Abstract: This invention discloses a process for synthesizing an amine functionalized monomer that comprises (1) reacting a secondary amine with a 2,3-dihalopropene to produce a vinyl halide containing secondary amine having a structural formula selected from the group consisting of 1Type: ApplicationFiled: December 9, 2003Publication date: June 24, 2004Applicant: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wein-Liang Hsu, Jin-Ping Zhou, Chad Aaron Jasiunas, Corey Stanton Yon
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Publication number: 20040044157Abstract: This invention discloses a process for synthesizing an amine functionalized monomer that comprises (1) reacting a secondary amine with a 2,3-dihalopropene to produce a vinyl halide containing secondary amine having a structural formula selected from the group consisting of 1Type: ApplicationFiled: March 14, 2003Publication date: March 4, 2004Inventors: Adel Farhan Halasa, Wen-Liang Hsu, Jin-Ping Zhou, Chad Aaron Jasiunas, Corey Stanton Yon
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Patent number: 6627715Abstract: The group IIa metal containing catalyst system of this invention can be utilized to synthesize rubbery polymers having a high trans microstructure by solution polymerization. Such rubbery polymers having a high trans microstructure content, such as polybutadiene rubber, styrene-isoprene-butadiene rubber, styrene-butadiene rubber, can be utilized in tire tread rubbers that exhibit improved wear and tear characteristics. This invention more specifically reveals a catalyst system which is comprised of (a) an organolithium compound, including organolithium functionalized compounds, (b) a group IIa metal salt selected from the group consisting of group IIa metal salts of di(alkylene glycol)alkylethers and group IIa metal salts of tri(alkylene glycol) alkylethers, and (c) an organoaluminum compound, and optionally an organomagnesium compound.Type: GrantFiled: April 17, 2002Date of Patent: September 30, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Chad Aaron Jasiunas, John Robert Zuppo, III, Laurie Elizabeth Austin
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Patent number: 6608154Abstract: The process and catalyst system of this invention can be utilized to synthesize polybutadiene rubber having a high trans content and a low melting point by solution polymerization. The trans-polybutadiene rubber made by the process of this invention can be utilized in tire tread rubbers that exhibit outstanding wear characteristics. More importantly, the trans-polybutadiene rubber of this invention can be easily processed because of its low level of crystallinity. In fact, the trans-polybutadiene made by the process of this invention does not need to be heated in a “hot-house” before being used in making rubber compounds. The process and catalyst system of this invention can also be used in the synthesis of trans-styrene-butadiene rubber (SBR).Type: GrantFiled: June 24, 2002Date of Patent: August 19, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Laurie Elizabeth Austin, Chad Aaron Jasiunas
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Publication number: 20030153698Abstract: The group IIa metal containing catalyst system of this invention can be utilized to synthesize rubbery polymers having a high trans microstructure by solution polymerization. Such rubbery polymers having a high trans microstructure content, such as polybutadiene rubber, styrene-isoprene-butadiene rubber, styrene-butadiene rubber, can be utilized in tire tread rubbers that exhibit improved wear and tear characteristics. This invention more specifically reveals a catalyst system which is comprised of (a) an organolithium compound, including organolithium functionalized compounds, (b) a group IIa metal salt selected from the group consisting of group IIa metal salts of di(alkylene glycol)alkylethers and group IIa metal salts of tri(alkylene glycol) alkylethers, and (c) an organoaluminum compound, and optionally an organomagnesium compound.Type: ApplicationFiled: April 17, 2002Publication date: August 14, 2003Inventors: Adel Farhan Halasa, Wen-Liang Hsu, Chad Aaron Jasiunas, John Robert Zuppo, Laurie Elizabeth Austin
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Publication number: 20030125487Abstract: The subject invention relates to a technique for synthesizing rubbery non-tapered, random, copolymers of 1,3-butadiene and isoprene. These rubbery copolymers exhibit an excellent combination of properties for utilization in tire sidewall rubber compounds for truck tires. By utilizing these isoprene-butadiene rubbers in tire sidewalls, tires having improved cut growth resistance can be built without sacrificing rolling resistance. Such rubbers can also be employed in tire tread compounds to improve tread wear characteristics and decrease rolling resistance without sacrificing traction characteristics.Type: ApplicationFiled: December 30, 2002Publication date: July 3, 2003Inventors: Wen-Liang Hsu, Adel Farhan Halasa, Chad Aaron Jasiunas
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Patent number: 6583244Abstract: Metal salts of cyclic alcohols can be used as modifiers in lithium initiated solution polymerizations of diene monomers into rubbery polymers having a low vinyl content. For instance, such initiator systems can be used in the copolymerization of styrene and isoprene to produce low vinyl styrene-isoprene rubber having a random distribution of repeat units that are derived from styrene. It is important for such polymerizations to be conducted in the absence of polar modifiers, such as Lewis bases. The subject invention more specifically discloses an initiator system which is comprised of (a) a lithium initiator and (b) a metal salt of a cyclic alcohol, wherein said initiator system is void of polar modifiers. The present invention also discloses a process for preparing a rubbery polymer having a low vinyl content which comprises: polymerizing at least one diene monomer with a lithium initiator at a temperature which is within the range of about 5° C. to about 100° C.Type: GrantFiled: October 31, 2001Date of Patent: June 24, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: Chad Aaron Jasiunas, John Robert Zuppo, III, Adel Farhan Halasa, Wen-Liang Hsu
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Patent number: 6576728Abstract: This invention is based upon the discovery of certain anionic initiator systems can be used to initiate the solution polymerization of conjugated diolefin monomers into rubbery polymers having a low vinyl content. For instance, such initiator systems can be used in the copolymerization of styrene and isoprene to produce low vinyl styrene-isoprene rubber having a random distribution of repeat units that are derived from styrene. These initiator systems are comprised of (a) a lithium initiator and (b) a member selected from the group consisting of (1) a sodium alkoxide, (2) a sodium salt of a sulfonic acid, and (3) a sodium salt of a glycol ether. It is important for the initiator system to be free of polar modifiers, such as Lewis bases.Type: GrantFiled: October 31, 2001Date of Patent: June 10, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: Chad Aaron Jasiunas, Adel Farhan Halasa, John Robert Zuppo, III
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Publication number: 20030100690Abstract: This invention is based upon the discovery of certain anionic initiator systems can be used to initiate the solution polymerization of conjugated diolefin monomers into rubbery polymers having a low vinyl content. For instance, such initiator systems can be used in the copolymerization of styrene and isoprene to produce low vinyl styrene-isoprene rubber having a random distribution of repeat units that are derived from styrene. These initiator systems are comprised of (a) a lithium initiator and (b) a member selected from the group consisting of (1) a sodium alkoxide, (2) a sodium salt of a sulfonic acid, and (3) a sodium salt of a glycol ether. It is important for the initiator system to be free of polar modifiers, such as Lewis bases.Type: ApplicationFiled: October 31, 2001Publication date: May 29, 2003Inventors: Chad Aaron Jasiunas, Adel Farhan Halasa, John Robert Zuppo
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Publication number: 20030100660Abstract: Pneumatic rubber tire having at least one component or a rubber composition comprised of a major portion of relatively low Tg high cis 1,4-polybutadiene elastomer (BR) and a minor portion of a relatively high Tg, styrene-rich, styrene/isoprene elastomer (SIR) wherein the Tg of said BR is at least 60° C. lower than the Tg of said SIR. Said SIR has a styrene content of at least 30 weight percent. The styrene based units of said SIR are present substantially without large blocks of styrene units. Said BR is a high cis 1,4-polybutadiene having a cis 1,4-content of at least 96 percent and preferably has a branched macrostructure. In one aspect of the invention, said tire component is a tire tread, particularly a circumferential tire tread.Type: ApplicationFiled: October 31, 2001Publication date: May 29, 2003Inventors: David John Zanzig, Adel Farhan Halasa, Chad Aaron Jasiunas
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Publication number: 20020183469Abstract: The process and catalyst system of this invention can be utilized to synthesize polybutadiene rubber having a high trans content and a low melting point by solution polymerization. The trans-polybutadiene rubber made by the process of this invention can be utilized in tire tread rubbers that exhibit outstanding wear characteristics. More importantly, the trans-polybutadiene rubber of this invention can be easily processed because of its low level of crystallinity. In fact, the trans-polybutadiene made by the process of this invention does not need to be heated in a “hot-house” before being used in making rubber compounds. The process and catalyst system of this invention can also be used in the synthesis of trans-styrene-butadiene rubber (SBR).Type: ApplicationFiled: June 24, 2002Publication date: December 5, 2002Applicant: The Goodyear Tire & Rubber CompanyInventors: Adel Farhan Halasa, Wen-Liang Hsu, Laurie Elizabeth Austin, Chad Aaron Jasiunas