1
Donald Norman Schulz, Adel Farhan Halasa: Protected amino-functional initiators and amino-terminated polymers and their production. The Firestone Tire & Rubber Company, March 29, 1977: US04015061 (55 worldwide citation)

N,N-bis(trialkylsilyl) amino-terminated polymers are prepared by treating p-lithio-N,N-bis(trialkylsilyl) aryl amine with a diene monomer and the resulting polymers are converted to a mono- or di- primary aryl amine-ended diene polymer directly by acid hydrolysis. The amine-ended polymers may be hom ...


2
Manoj Ajbani, Wen Liang Hsu, Adel Farhan Halasa, Ginger Lee, Eric Sean Castner: Light weight rubber composition containing clay. The Goodyear Tire & Rubber Company, Alvin T Rockhill, April 27, 2004: US06727311 (36 worldwide citation)

This invention discloses a rubber composition that is comprised of: (1) an amino group containing rubbery polymer, wherein said amino group containing rubbery polymer contains from about 0.1 weight percent to about 20 weight percent of monomer units containing an amino group, and (2) from about 0.1 ...


3
Adel Farhan Halasa, Wen Liang Hsu, Laurie Elizabeth Austin: Process and catalyst system for synthesizing random trans SBR with low vinyl microstructure. The Goodyear Tire & Rubber Company, Alvin T Rockhill, August 15, 2000: US06103842 (29 worldwide citation)

The process and catalyst system of this invention can be utilized to synthesize a highly random styrene-butadiene rubber having a high trans content by solution polymerization. The styrene-butadiene rubber made by the process of this invention can be utilized in tire tread rubbers that exhibit impro ...


4
Adel Farhan Halasa, Wen Liang Hsu: Process for preparing 3,4-polyisoprene rubber. The Goodyear Tire & Rubber Company, Alvin T Rockhill, October 14, 1997: US05677402 (25 worldwide citation)

This invention reveals an initiator system which is comprised of (a) a lithium initiator, (b) a sodium alkoxide and (c) a polar modifier; wherein the molar ratio of the sodium alkoxide to the lithium initiator is within the range of about 0.05:1 to about 3:1; and wherein the molar ratio of the polar ...


5
Adel Farhan Halasa, Wen Liang Hsu, David John Zanzig, Paul Harry Sandstrom, Steven Kristofer Henning, Danielle Lucas: Process for preparing high vinyl polbutadiene rubber. The Goodyear Tire & Rubber Company, Alvin T Rockhill, August 5, 1997: US05654384 (24 worldwide citation)

This invention reveals a process for preparing high vinyl polybutadiene rubber which comprises polymerizing 1,3-butadiene monomer with a lithium initiator at a temperature which is within the range of about 5.degree. C. to about 100.degree. in the presence of a sodium alkoxide and a polar modifier, ...


6
Wen Liang Hsu, Adel Farhan Halasa: Rubbers having improved interaction with silica. The Goodyear Tire & Rubber Company, Alvin T Rockhill, July 29, 1997: US05652310 (22 worldwide citation)

The subject invention discloses a process for modifying a rubbery polymer to improve silica interaction which comprises the steps of: (1) metallating the rubbery polymer with lithium by reacting the rubbery polymer with an organo lithium compound in the presence of a member selected from the group c ...


7
Adel Farhan Halasa, Wen Liang Hsu: Functionalized monomers for synthesis of rubbery polymers. The Goodyear Tire & Rubber Company, Alvin T Rockhill, February 17, 2004: US06693160 (22 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


8
Gary Stephen Kyker, Thomas Anthony Antkowiak, Adel Farhan Halasa: Process for conversion of elastomeric phosphazene. The Firestone Tire & Rubber Company, July 20, 1976: US03970533 (20 worldwide citation)

Novel phosphonitrilic fluoroelastomers and compositions based on the same, possessing outstanding solvent resistance, low temperature flexibility and good physical strength over a broad range of service conditions are disclosed. The use of specific substituents in the side chains on the ##EQU1## bac ...


9
Adel Farhan Halasa, Wen Liang Hsu, Jin Ping Zhou, Chad Aaron Jasiunas, Corey Stanton Yon: Functionalized monomers for synthesis of rubbery polymers. The Goodyear Tire & Rubber Company, Alvin T Rockhill, Henry C Young Jr, August 30, 2005: US06936669 (20 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 wherein R and R′ can be th ...


10
George Jalics, Adel Farhan Halasa, David John Zanzig: Silica-filled rubber compositions and the processing thereof. The Goodyear Tire & Rubber Company, Bruce J Hendricks, January 13, 1998: US05708053 (17 worldwide citation)

The present invention relates to silica-filled rubber compositions and their method of processing. The rubber compositions contain a mixture of 10 to 150 phr of a particulate precipitated silica having dispersed thereon, from 1 to 20 percent by weight based upon the weight of the silica, of a silane ...



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