31
David John Zanzig, Adel Farhan Halasa, Wen Liang Hsu, Paul Harry Sandstrom, Laurie Elizabeth Austin: Tire tread compound. The Goodyear Tire & Rubber Company, Alvin T Rockhill, January 12, 1999: US05859133 (7 worldwide citation)

The subject invention discloses a pneumatic tire having an outer circumferential tread wherein said tread is a sulfur-cured rubber composition comprised of (a) an isoprene-butadiene diblock rubber, said isoprene-butadiene diblock rubber being comprised of a butadiene block and an isoprene-butadiene ...


32
Adel Farhan Halasa: Polymerization of conjugated dienes with starved lithium, potassium or sodium catalyst. The Firestone Tire & Rubber Company, June 29, 1976: US03966691 (7 worldwide citation)

A linear conjugated diene of 4 to 8 carbon atoms or a mixture of such conjugated dienes or a mixture of such a conjugated diene and a vinyl aromatic monomer is polymerized in a monomer-starved process to yield homopolymers of copolymers of low molecular weight containing as low as 35 and up to 90 or ...


33
Edward John Blok, Mark Leslie Kralevich Jr, Paul Harry Sandstrom, Wen Liang Hsu, Adel Farhan Halasa: Liquid isoprene-butadiene rubber. The Goodyear Tire & Rubber Company, Alvin T Rockhill, March 20, 2001: US06204320 (7 worldwide citation)

The subject invention discloses a liquid isoprene-butadiene rubber (IBR) which is particularly valuable for use in making treads for high performance automobile tires, including race tires, that exhibit superior dry traction characteristics and durability. The isoprene-butadiene rubber of this inven ...


34
Adel Farhan Halasa, Laurie Elizabeth Austin, Wen Liang Hsu, Bill Bud Gross: Solution polymerization process for synthesis of styrene-butadiene or styrene-isoprene rubber. The Goodyear Tire & Rubber Company, Alvin T Rockhill, October 21, 1997: US05679751 (7 worldwide citation)

The subject invention relates to a technique for synthesizing rubbery copolymers of styrene and butadiene and/or isoprene. These rubbers exhibit an excellent combination of properties for utilization in high performance tire tread rubber compounds. The subject invention specifically discloses a proc ...


35
Adel Farhan Halasa: Catalysts for the hydrogenation of unsaturated hydrocarbon polymers. The Firestone Tire & Rubber Company, October 26, 1976: US03988504 (7 worldwide citation)

A hydrogenation catalyst for unsaturated hydrocarbon polymers is made by reducing a ligand metal salt with either a trialkyl aluminum or a dialkyl aluminum hydride compound. The catalysts easily and readily promotes a hydrogenation process.


36
Adel Farhan Halasa, Wen Liang Hsu: Functionalized monomers for synthesis of rubbery polymers. The Goodyear Tire & Rubber Company, Alvin T Rockhill, June 7, 2005: US06901982 (7 worldwide citation)

The present invention relates to a process for synthesizing a rubbery polymer that comprises copolymerizing at least one conjugated diolefin monomer and at least one functionalized monomer in an organic solvent at a temperature which is within the range of 0° C. to about 150° C., wherein the polymer ...


37
Adel Farhan Halasa, Wen Liang Hsu, Naoya Ogata: Functionalized monomers for synthesis of rubbery polymers. The Goodyear Tire & Rubber Company, Alvin T Rockhill, June 22, 2004: US06753447 (7 worldwide citation)

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


38
Adel Farhan Halasa, Wen Liang Hsu, Aaron Michael Ryba, Jin Ping Zhou, Chad Aaron Jasiunas, Paul Harry Sandstrom: Synthetic polyisoprene rubber. The Goodyear Tire & Rubber Company, Alvin T Rockhill, August 15, 2006: US07091150 (6 worldwide citation)

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 an ...


39
Edward John Blok, Paul Harry Sandstrom, Cheryl Ann Losey, Adel Farhan Halasa, Wen Liang Hsu, David John Zanzig, John Joseph Andre Verthe: Tire tread compositions containing asymmetrically tin-coupled polybutadiene rubber. The Goodyear Tire & Rubber Company, Alvin T Rockhill, February 15, 2000: US06025430 (6 worldwide citation)

This invention relates to a tire tread compound that is easily processable which can be used to improve the treadwear, rolling resistance and traction characteristics of tires. The tire tread compounds of this invention are a blend of tin-coupled polybutadiene, high vinyl polybutadiene and natural r ...


40
Adel Farhan Halasa, Laurie Elizabeth Austin, Susan Ann Weakland: Pneumatic tire. The Goodyear Tire & Rubber Company, Alvin T Rockhill, September 9, 1997: US05665826 (6 worldwide citation)

The subject invention relates to an anionic polymerization technique for synthesizing rubbery polymers of conjugated diolefin monomers, such as an rubbery copolymer of .alpha.-methylstyrene and 1,3-butadiene. These rubbery copolymers exhibit an excellent combination of properties for utilization in ...