Patents by Inventor Hubert J. Fabris
Hubert J. Fabris 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: 5294663Abstract: The present invention provides an emulsion polymerization synthetic isoprene-styrene/butadiene rubber for use in improved tire tread compositions is provided. The improved composition is a blend of a 1,4 cis-polyisoprene such as natural rubber and a synthetic rubber produced by emulsion polymerization which synthetic rubber includes isoprene and either styrene or butadiene or both styrene and butadiene. The tire tread composition has an excellent balance of good wear resistance and low rolling resistance as well as a low T.sub.g and good traction. These improved qualities for tire tread compositions have heretofore been unavailable in rubbers utilizing emulsion polymers, and have been achievable only with tire compositions including synthetic rubbers that are produced by solution polymerization.Type: GrantFiled: August 28, 1992Date of Patent: March 15, 1994Assignee: General Tire, Inc.Inventors: Hubert J. Fabris, Ivan G. Hargis, Russell A. Livigni, Richard M. Wise
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Patent number: 5216181Abstract: Liquid telechelic polymers are made from dienes and are produced via anionic polymerization. While having low molecular weight, for example less than 15,000, the telechelic polymers are generally gel-free, have high amounts of trans-1,4 structure, low vinyl unsaturation and low bulk viscosities. The liquid telechelic polymers are made utilizing a trimetallic initiator comprised of (1) an organopolylithium compound and (2) a complex of a trialiphatic substituted aluminum compound or derivative thereof and a barium salt of an organic alcohol.Type: GrantFiled: August 26, 1991Date of Patent: June 1, 1993Assignee: GenCorp Inc.Inventors: I. Glen Hargis, Hubert J. Fabris, John A. Wilson, Russell A. Livigni
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Patent number: 5202499Abstract: Liquid telechelic polymers are made from dienes and are produced via anionic polymerization. While having low molecular weight, for example less than 15,000, the telechelic polymers are generally gel-free, have high amounts of trans-1,4 structure, low vinyl unsaturation and low bulk viscosities. The liquid telechelic polymers are made utilizing a trimetallic initiator comprised of (1) an organopolylithium compound and (2) a complex of a trialiphatic substituted aluminum compound or derivative thereof and a barium salt of an aromatic alcohol.Type: GrantFiled: January 8, 1991Date of Patent: April 13, 1993Assignee: GenCorp Inc.Inventors: I. Glen Hargis, Hubert J. Fabris, John A. Wilson, Russell A. Livigni
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Patent number: 5063190Abstract: Liquid telechelic polymers are made from dienes and are produced via anionic polymerization. While having low molecular weight, for example less than 15,000, the telechelic polymers are generally gel-free, have high amounts of trans-1,4 structure, low vinyl unsaturation and low bulk viscosities. The liquid telechelic polymers are made utilizing a trimetallic initiator comprised of (1) an organopolylithium compound and (2) a complex of a trialiphatic substituted aluminum compound or derivative thereof and a barium salt of an organic alcohol.Type: GrantFiled: June 19, 1990Date of Patent: November 5, 1991Assignee: GenCorp Inc.Inventors: I. Glen Hargis, Hubert J. Fabris, John A. Wilson, Russell A. Livigni
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Patent number: 4868231Abstract: Sheet molding compounds are thickened (or maturated) via "in situ" formation of polyureas made from aromatic primary diamines with reduced basicity and diisocyanates. The molding compounds, which can optionally contain mineral fillers such as chopped glass fiber, are generally based upon unsaturated polyester resins having a high percentage of hydroxyl end groups, polymerizable vinyl compounds such as styrene, and the like. The thickened compositions are tack-free and compression moldable after less than one day, typically after less than several hours, into permanently shaped, strong rigid articles, such as automotive body parts. A viscosity plateau is reached and maintained by the maturated compounds of the present invention for extended periods of time, e.g., several weeks.Type: GrantFiled: May 27, 1988Date of Patent: September 19, 1989Assignee: GenCorp Inc.Inventors: Gerd M. Lenke, Hubert J. Fabris, Earl G. Melby
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Patent number: 4789703Abstract: Pelletized thermoplastic polymers or resins containing (--CONH--) groups such as the nylons can readily be brominated or chlorinated in organic solvents to convert the (--NH--) units to (--NBr--) or (--NCl--) units and to form solutions of the N-brominated or N-chlorinated thermoplastic polymers or resins. These N-brominated or N-chlorinated thermoplastic polymer solutions can be coated on a cellular or solid rubbery hydrocarbon polymer substrate, such as an EPDM rubber in the form of a weatherstrip or glass run channel, dried and irradiated with ultraviolet light or heated at a temperature and for a period of time sufficient to reform the amide (--CONH--) groups and to provide the rubbery substrate with an adherent and abrasion resistant coating which also exhibits reduced ice adhesion and coefficient of friction.Type: GrantFiled: May 22, 1987Date of Patent: December 6, 1988Assignee: GenCorp Inc.Inventors: Hubert J. Fabris, Earl G. Melby, Kohji Y. Chihara, Harry W. Cocain
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Patent number: 4720518Abstract: Thermoplastic polymers or resins containing amide groups such as the nylons can readily be brominated or chlorinated in organic solvents to convert the (--NH--) units to (--NBr--) or (--NCl--) units and to form solutions of the N-brominated or N-chlorinated thermoplastic polymers or resins. These N-brominated or N-chlorinated thermoplastic polymer or resin solutions can be blended with silicones (siloxanes) and optionally with at least one finely divided material selected from the group consisting of inorganic and organic fillers and pigments and then can be coated on a cellular or solid rubbery hydrocarbon polymer substrate, such as an EPDM rubber in the form of a weatherstrip or glass run channel, dried and irradiated with ultraviolet light or heated at a temperature and for a period of time sufficient to reform the amide groups and to provide the rubbery substrate with an adherent and abrasion resistant coating which also exhibits a reduced coefficient of friction.Type: GrantFiled: March 5, 1987Date of Patent: January 19, 1988Assignee: GenCorp Inc.Inventors: Kohji Y. Chihara, Hubert J. Fabris, Earl G. Melby, James L. Cowell, Harry W. Cocain
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Patent number: 4676995Abstract: Pelletized thermoplastic polymers or resins containing (--CONH--) groups such as the nylons can readily be brominated or chlorinated in organic solvents to convert the (--NH--) units to (--NBr--) or (--NCl--) units and to form solutions of the N-brominated or N-chlorinated thermoplastic polymers or resins. These N-brominated or N-chlorinated thermoplastic polymer solutions can be coated on a cellular or solid rubbery hydrocarbon polymer substrate, such as an EPDM rubber in the form of a weatherstrip or glass run channel, dried and irradiated with ultraviolet light or heated at a temperature and for a period of time sufficient to reform the amide (--CONH--) groups and to provide the rubbery substrate with an adherent and abrasion resistant coating which also exhibits reduced ice adhesion and coefficient of friction.Type: GrantFiled: February 24, 1986Date of Patent: June 30, 1987Assignee: GenCorp Inc.Inventors: Hubert J. Fabris, Earl G. Melby, Kohji Y. Chihara, Harry W. Cocain
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Patent number: 4669518Abstract: Rubbery high trans-high vinyl diblock copolymers, blends of rubbery high trans copolymers and rubbery high vinyl polymers, and mixtures (alloys or blends) of said diblock copolymers, high trans copolymers and high vinyl polymers are useful in producing tire treads exhibiting good processibility, good rolling resistance, skid resistance and abrasion resistance. The high trans block or copolymer comprises a copolymer of butadiene-1,3 and styrene and/or isoprene and the high vinyl block or polymer comprises polybutadiene or copolymers of butadiene and styrene and/or isoprene. These di-block copolymers, copolymers and polymers are made by solution polymerization. The diblock copolymer may be made by copolymerizing butadiene and styrene and/or isoprene using a Ba, Ca or Sr alcoholate, R.sub.2 Mg and R.sub.Type: GrantFiled: April 7, 1986Date of Patent: June 2, 1987Assignee: GenCorp Inc.Inventors: Ivan G. Hargis, Hubert J. Fabris, Russell A. Livigni, Sundar L. Aggarwal, George B. Thomas, John A. Wilson
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Patent number: 4670502Abstract: Rubbery high trans-high vinyl diblock copolymers, blends of rubbery high trans copolymers and rubbery high vinyl polymers, and mixtures (alloys or blends) of said diblock copolymers, high trans copolymers and high vinyl polymers are useful in producing tire treads exhibiting good processibility, good rolling resistance, skid resistance and abrasion resistance. The high trans block or copolymer comprises a copolymer of butadiene-1,3 and styrene and/or isoprene and the high vinyl block or polymer comprises polybutadiene or copolymers of butadiene and styrene and/or isoprene. These di-block copolymers, copolymers and polymers are made by solution polymerization. The diblock copolymer may be made by copolymerizing butadiene and styrene and/or isoprene using a Ba, Ca or Sr alcoholate, R.sub.2 Mg and R.sub.Type: GrantFiled: April 7, 1986Date of Patent: June 2, 1987Assignee: GenCorp Inc.Inventors: Ivan G. Hargis, Hubert J. Fabris, Russell A. Livigni, Sundar L. Aggarwal, George B. Thomas, John A. Wilson
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Patent number: 4616065Abstract: Rubbery high trans-high vinyl diblock copolymers, blends of rubbery high trans copolymers and rubbery high vinyl polymers, and mixtures (alloys or blends) of said diblock copolymers, high trans copolymers and high vinyl polymers are useful in producing tire treads exhibiting good processibility, good rolling resistance, skid resistance and abrasion resistance. The high trans block or copolymer comprises a copolymer of butadiene-1,3 and styrene and/or isoprene and the high vinyl block or polymer comprises polybutadiene or copolymers of butadiene and styrene and/or isoprene. These di-block copolymers, copolymers and polymers are made by solution polymerization. The diblock copolymer may be made by copolymerizing butadiene and styrene and/or isoprene using a Ba, Ca or Sr alcoholate, R.sub.2 Mg and R.sub.Type: GrantFiled: April 15, 1985Date of Patent: October 7, 1986Assignee: GenCorp Inc.Inventors: Ivan G. Hargis, Hubert J. Fabris, Russell A. Livigni, Sundar L. Aggarwal, George B. Thomas, John A. Wilson
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Patent number: 4547550Abstract: Flexible thermoplastic vinyl chloride polymers are prepared by graft or over copolymerizing said polymers with a mixture of certain acrylates and nitriles or by blending said vinyl chloride polymer with a terpolymer of certain acrylates and nitriles.Type: GrantFiled: November 7, 1984Date of Patent: October 15, 1985Assignee: The General Tire & Rubber CompanyInventors: Earl G. Melby, Hubert J. Fabris, Russell A. Livigni, Harry W. Cocain
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Patent number: 4511699Abstract: Flexible thermoplastic vinyl chloride polymers are prepared by graft or over copolymerizing said polymers with a mixture of certain acrylates and nitriles or by blending said vinyl chloride polymer with a terpolymer of certain acrylates and nitriles.Type: GrantFiled: January 13, 1984Date of Patent: April 16, 1985Assignee: The General Tire & Rubber CompanyInventors: Earl G. Melby, Hubert J. Fabris, Russell A. Livigni, Harry W. Cocain
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Patent number: 4511700Abstract: Flexible thermoplastic vinyl chloride polymers are prepared by graft or over copolymerizing said polymers with a mixture of certain acrylates and nitriles or by blending said vinyl chloride polymer with a terpolymer of certain acrylates and nitriles.Type: GrantFiled: January 13, 1984Date of Patent: April 16, 1985Assignee: The General Tire & Rubber CompanyInventors: Earl G. Melby, Hubert J. Fabris, Russell A. Livigni, Harry W. Cocain
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Patent number: 4503204Abstract: A composition useful as a catalyst in solution polymerization comprises (1) a barium, calcium and/or strontium alcoholate, (2) an organoaluminum compound and (3) an organomagnesium compound. (2) and (3) may be used as a complex with (1). The compositions can be used to polymerize ethylenically unsaturated monomers like butadiene, butadiene and styrene, and isoprene and heterocyclic monomers like oxiranes, thiiranes, siloxanes, thiatanes and lactams. The catalyst composition can produce polybutadienes and butadiene-styrene copolymers having a trans-1,4 content as high as 90%. The non-terminating features of the polymerization of this invention permit the preparation of functionally terminated butadiene based polymers and block polymers containing sufficient amounts of trans-1,4 butadiene units to crystallize.Type: GrantFiled: February 15, 1983Date of Patent: March 5, 1985Assignee: The General Tire & Rubber CompanyInventors: Robert E. Bingham, Richard R. Durst, Hubert J. Fabris, Ivan G. Hargis, Russell A. Livigni, Sundar L. Aggarwal
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Patent number: 4480076Abstract: Flexible thermoplastic vinyl chloride polymers are prepared by graft or over copolymerizing said polymers with a mixture of certain acrylates and nitriles or by blending said vinyl chloride polymer with a terpolymer of certain acrylates and nitriles.Type: GrantFiled: June 21, 1982Date of Patent: October 30, 1984Assignee: The General Tire & Rubber CompanyInventors: Earl G. Melby, Hubert J. Fabris, Russell A. Livigni, Harry W. Cocain
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Patent number: 4448956Abstract: Polyamides such as nylon-6 type polyamides are prepared by the reaction or copolymerization of a major amount by weight of a lactam and a minor amount by weight of a graft copolymer of maleic anhydride on a low molecular weight liquid conjugated diene polymer or copolymer or of a copolymer of a conjugated diene and a monovinyl aryl monomer or a nitrile. For example, a graft of maleic anhydride on liquid butadiene/acrylonitrile copolymer is copolymerized with epsilon-caprolactam using an anionic lactam polymerization catalyst (a lactamate salt) like the reaction product of ethyl magnesium bromide and epsilon-caprolactam. The present invention may be useful in a RIM (Reaction Injection Molding) process. The resulting polyamides have improved impact strength and water resistance. They can be used to make automobile and truck bodies and parts.Type: GrantFiled: May 10, 1983Date of Patent: May 15, 1984Assignee: The General Tire & Rubber CompanyInventors: Gerd M. Lenke, Earl G. Melby, Hubert J. Fabris
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Patent number: 4423193Abstract: Vinylchloride resins such as polyvinylchloride, copolymers of vinylchloride and vinyl acetate and copolymers of vinylchloride and vinylidene chloride are dehydrochlorinated in water at 150.degree. to 180.degree. C. to provide a dehydrochlorinated vinylchloride resin which can be graft copolymerized with one or more copolymerizable monomers containing polymerizable ethylenically unsaturated double bonds. Grafted copolymers in which the grafting monomer is butyl acrylate and the like provide an internally plasticized vinylchloride resin.Type: GrantFiled: September 1, 1982Date of Patent: December 27, 1983Assignee: The General Tire & Rubber CompanyInventors: Earl G. Melby, Harry W. Cocain, Hubert J. Fabris
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Patent number: 4414362Abstract: Polyamides from lactams are prepared by the reaction of an initiator compound, a liquid hydroxy containing nitrile copolymer and a lactam using as a catalyst a minor amount of a lactam anionic polymerization catalyst. The resulting polyamides exhibit high impact strength and improved dimensional stability or reduced sensitivity to dimensional change upon exposure to a high humidity environment.Type: GrantFiled: March 4, 1982Date of Patent: November 8, 1983Assignee: The General Tire & Rubber CompanyInventors: Gerd M. Lenke, Hubert J. Fabris
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Patent number: 4377680Abstract: Cyanoethylated and/or cyanopropylated hydrazides are useful as curing agents for polyglycidyl ether resins. These hydrazide-epoxy resin mixtures have useful pot lives and exhibit fast cures.Type: GrantFiled: May 28, 1982Date of Patent: March 22, 1983Assignee: The General Tire & Rubber CompanyInventors: David R. Sponseller, Earl G. Melby, Hubert J. Fabris