Patents by Inventor Irwin J. Gardner
Irwin J. Gardner 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: 5567775Abstract: This invention provides for curable and graft-cured polymer compositions prepared from a mixture comprising:a) an elastomeric copolymer containing from about 0.01 up to about 10 mole % of Y ester groups randomly distributed along and pendant to the elastomeric polymer chain, said Y ester groups having the structure: ##STR1## wherein R.sub.2 and R.sub.3 are independently selected from the group consisting of hydrogen and an alkyl group containing 1 to about 6 carbon atoms and R.sub.4 is selected from the group consisting of hydrogen, an alkyl group containing from 1 to about 28 carbon atoms, an aryl group and an alkenyl group containing from 2 to about 28 carbon atoms; andb) at least one free radically polymerizable monomer. The invention also provides for a process for preparing graft-cured polymer compositions comprising forming the above recited mixture of (a) and (b) and subjecting said mixture to free radical polymerization conditions. The Y ester groups pendant to the elastomeric polymer chain, e.g.Type: GrantFiled: June 6, 1995Date of Patent: October 22, 1996Assignee: Exxon Chemical Patents Inc.Inventors: Hsien C. Wang, Irwin J. Gardner, James V. Fusco
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Patent number: 5373062Abstract: An improved promoted curing system for halogenated elastomers has been discovered wherein the curing system contains one or a mixture of bismuth carboxylates having the structure of Formula 1: ##STR1## wherein R.sub.1 is selected from the group consisting of straight or branched chain alkyl groups having from 4 to about 30 carbon atoms, aromatic groups containing 6 to about 30 carbon atoms and alkaryl groups containing from 7 to about 30 carbon atoms.It has been found that the use of these bismuth salts, alone or in combination with zinc compounds in the cure of compositions containing halogenated elastomers leads to full, low reversion cures and curable compositions exhibiting very low precure scorch properties.Type: GrantFiled: April 29, 1993Date of Patent: December 13, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Irwin J. Gardner, Donald S. Tracey
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Patent number: 5332787Abstract: A process is provided for vulcanizing a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene utilizing a vulcanization mixture comprising a basic zinc carbonate hydroxide.Type: GrantFiled: November 30, 1992Date of Patent: July 26, 1994Assignee: Exxon Chemical Patents Inc.Inventor: Irwin J. Gardner
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Patent number: 5102958Abstract: A partially crosslinked, unsaturated elastomeric polymer of a C.sub.4 to C.sub.7 isomonoolefin and a C.sub.4 to C.sub.14 conjugated multiolefin is provided which has a low crosslink density. The partially crosslinked polymer is produced by curing an uncrosslinked unsaturated polymer having a low level of chemically bound halogen with a curing agent which reacts only with the halogen. Processes for preparing these partially crosslinked unsaturated polymers are also provided.Type: GrantFiled: May 30, 1991Date of Patent: April 7, 1992Assignee: Exxon Chemical Patents Inc.Inventors: Pierre Hous, Olivier H. Lacoste, James V. Fusco, Irwin J. Gardner, William M. Davis, Lawrence W. Flatley
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Patent number: 5087674Abstract: A process for halogenating polymers by contacting a polymer either in solution or in bulk with a halogenating agent in the presence of an acid scavenger. Halogenated polymer, e.g., butyl rubber, with a particular structure is obtained and the product suffers less molecular weight loss. Combinations of acid scavengers can also be used and the scavenger can be dispersed in the polymer prior to halogenation and/or added to the reaction zone during halogenation.Type: GrantFiled: October 11, 1990Date of Patent: February 11, 1992Assignee: Exxon Research & EngineeringInventors: Irwin J. Gardner, James V. Fusco, Neil F. Newman, Ronald C. Kowalski, William M. Davis
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Patent number: 5077345Abstract: A halogenation process is provided for halogenating a polymer, in which process the halogenation reaction product is neutralized by reaction of an aqueous alkaline material in the presence of a critical limited amount of alcohol to increase the neutralization rate.Type: GrantFiled: March 1, 1990Date of Patent: December 31, 1991Assignee: Exxon Chemical Patents Inc.Inventors: Neil F. Newman, Irwin J. Gardner
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Patent number: 5075387Abstract: A partially crosslinked, unsaturated elastomeric polymer of a C.sub.4 to C.sub.7 isomonoolefin and a C.sub.4 to C.sub.14 conjugated multiolefin is provided which has a low crosslink density. The partially crosslinked polymer is produced by curing an uncrosslinked unsaturated polymer having a low level of chemically bound halogen with a curing agent which reacts only with the halogen. Processes for preparing these partially crosslinked unsaturated polymers are also provided.Type: GrantFiled: December 22, 1989Date of Patent: December 24, 1991Assignee: Exxon Chemical Patents Inc.Inventors: Pierre Hous, Olivier H. Lacoste, James V. Fusco, Irwin J. Gardner, William M. Davis, Lawrence W. Flatley
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Patent number: 4703091Abstract: An improved halogenated butyl rubber wherein the polymer has a conjugated diene content of less than 0.25 mole % and a halogen content of at least 0.6 wt. %; at least 20 mole % of the halogen being in a primary allylic configuration.Type: GrantFiled: November 21, 1986Date of Patent: October 27, 1987Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Neil F. Newman, Ronald C. Kowalski, William M. Davis, Francis P. Baldwin
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Patent number: 4681921Abstract: Improved halogenated butyl rubbers are prepared by isomerizing the polymers so that a significant mole fraction of the halogen is in the primary allylic position. The isomerization is carried out utilizing as a catalyst either a Friedel Crafts catalyst or HBr.Type: GrantFiled: April 5, 1984Date of Patent: July 21, 1987Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Francis P. Baldwin
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Patent number: 4649178Abstract: A process for preparing a brominated butyl rubber high in Primary Allylic Bromine which comprises reacting the rubber in solution with elemental bromine at a temperature of about 65.degree. C. to about 130.degree. C. The process is preferably carried out under substantially anhydrous conditions.Type: GrantFiled: October 1, 1984Date of Patent: March 10, 1987Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco
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Patent number: 4634741Abstract: Improved halogenated butyl rubbers are prepared by isomerizing the polymers so that a significant mole fraction of the halogen is in the primary allylic position. The isomerization is carried out utilizing as a catalyst either a Friedel Crafts catalyst or HBr.Type: GrantFiled: December 9, 1985Date of Patent: January 6, 1987Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Francis P. Baldwin
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Patent number: 4632963Abstract: An improved halogenated butyl rubber wherein the polymer has a conjugated diene content of less than 0.25 mole % and a halogen content of at least 0.6 wt. %; at least 20 mole % of the halogen being in a primary allylic configuration.Type: GrantFiled: April 5, 1984Date of Patent: December 30, 1986Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, James V. Fusco, Neil F. Newman, Ronald C. Kowalski, William M. Davis, Francis P. Baldwin
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Patent number: 4288575Abstract: A heterogeneous catalytic process for dehydrohalogenating allylically halogenated olefinic hydrocarbon polymers to produce conjugated diene unsaturated polymeric products is disclosed comprising employing certain metal containing catalyst compositions, especially activated alumina supported copper containing catalysts. The process is especially suitable for the preparation of conjugated diene butyl elastomers from halogenated butyl rubber and produces products having relatively high reactivity levels in terms of active diene content.Type: GrantFiled: September 17, 1979Date of Patent: September 8, 1981Assignee: Exxon Research & Engineering Co.Inventor: Irwin J. Gardner
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Patent number: 4211855Abstract: A heterogeneous catalytic process for dehydrohalogenating allylically halogenated olefinic hydrocarbon polymers to produce conjugated diene unsaturated polymeric products is disclosed comprising employing certain metal containing catalyst compositions, especially activated alumina supported copper containing catalysts. The process is especially suitable for the preparation of conjugated diene butyl elastomers from halogenated butyl rubber and produces products having relatively high reactivity levels in terms of active diene content.Type: GrantFiled: December 4, 1978Date of Patent: July 8, 1980Assignee: Exxon Research & Engineering Co.Inventor: Irwin J. Gardner
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Patent number: 4208491Abstract: There is disclosed a method for crosslinking elastomers containing randomly distributed sites of conjugated olefinic unsaturation with monomers adsorbed onto granular adsorbent and dispersed into the elastomer.Type: GrantFiled: October 3, 1975Date of Patent: June 17, 1980Assignee: Exxon Research & Engineering Co.Inventor: Irwin J. Gardner
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Patent number: 4160758Abstract: Methods for preparing reinforced molding compounds are disclosed, comprising preparing a first paste component from a mixture of a thermosetting unsaturated polyester component, a free radical polymerizable monomer component and an inorganic particulate filler component, preparing a second paste component from a conjugated diene butyl elastomer copolymer component, a free radical polymerizable monomer component, and an inorganic particulate filler component, and combining the first and second paste components in order to produce an elastomer modified thermosetting unsaturated polyester molding compound having improved surface appearance, toughness and impact strength. Preferably, one or both of the paste components will include a thermoplastic polymer additive component to provide low profile qualities to the product.Type: GrantFiled: January 30, 1978Date of Patent: July 10, 1979Assignee: Exxon Research & Engineering Co.Inventor: Irwin J. Gardner
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Patent number: 4160759Abstract: Reinforced molding compounds are disclosed comprising elastomer modified thermosetting unsaturated polyesters which include conjugated diene butyl rubber elastomer copolymer dispersed therein, and which further include inorganic particulate filler material and a free radical polymerizable monomer. Preferably, they also include a thermoplastic component, and such compounds have improved surface appearance, toughness and impact strength as demonstrated by the molded articles produced from such a low profile system.Type: GrantFiled: January 30, 1978Date of Patent: July 10, 1979Assignee: Exxon Research & Engineering Co.Inventors: Irwin J. Gardner, Francis P. Baldwin
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Patent number: 4145492Abstract: A heterogeneous catalytic process for dehydrohalogenating allylically halogenated olefinic hydrocarbon polymers to produce conjugated diene unsaturated polymeric products is disclosed comprising employing certain metal containing catalyst compositions, especially activated alumina supported copper containing catalysts. The process is especially suitable for the preparation of conjugated diene butyl elastomers from halogenated butyl rubber and produces products having relatively high reactivity levels in terms of active diene content.Type: GrantFiled: March 7, 1977Date of Patent: March 20, 1979Assignee: Exxon Research & Engineering Co.Inventor: Irwin J. Gardner