Patents Represented by Attorney J. E. Schneider
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Patent number: 5693706Abstract: The invention comprises a hydrogenated hydrocarbon resin suitable as tackifier for acrylic adhesive polymers, having greater than 20% aromatic protons after hydrogenation, a z-average molecular weight of less than about 1800, a narrow molecular weight distribution, typically of less than or equal to 2.1, and a softening point of from 40.degree. C. to about 120.degree. C. It additionally comprises a method for preparing a hydrogenated aromatic tackifier resin suitable as tackifier for acrylic adhesive polymers comprising the steps of: a) polymerizing under Friedel-Crafts polymerization conditions steam-cracked petroleum distillates, or fractions thereof, having boiling points between about 135.degree. C. and 220.degree. C. and containing at least 40% of by weight vinyl aromatic monomer contents, in the presence of a chain transfer agent; and b) catalytically hydrogenating the results of a) such that at least 75% of the aromaticity is retained.Type: GrantFiled: February 14, 1997Date of Patent: December 2, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Steven George Hentges, Frank Carl Jagisch, Edward Francis Smith
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Patent number: 5651927Abstract: Multiple sequential chemical reactions on a polymeric feedstock are carried out in an extruder with multiple reaction zones. Each reaction zone has means for introduction of reagents, for mixing of reagents with polymer and for removal of by/co-products or unreacted reagents.Type: GrantFiled: June 5, 1996Date of Patent: July 29, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Richard Stephen Auda, William Myers Davis, David Yen-Lung Chung, Lawrence William Flatley, Jr., Brenton George Jones, Donald Andrew White, Hans Gerlach Woudboer
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Patent number: 5565161Abstract: Multiple sequential chemical reactions on a polymeric feedstock are carried out in an extruder with multiple reaction zones. Each reaction zone has means for introduction of reagents, for mixing of reagents with polymer and for removal of by/co-products or unreacted reagents.Type: GrantFiled: February 1, 1995Date of Patent: October 15, 1996Assignee: Exxon Chemical Patents Inc.Inventors: Richard S. Auda, William M. Davis, David Y. Chung, Lawrence W. Flatley, Jr., Brenton G. Jones, Donald A. White, Hans G. Woudboer
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Patent number: 5552096Abstract: Multiple sequential chemical reactions on a polymeric feedstock are carried out in an extruder with multiple reaction zones. Each reaction zone has means for introduction of reagents, for mixing of reagents with polymer and for removal of by/co-products or unreacted reagents.Type: GrantFiled: May 31, 1995Date of Patent: September 3, 1996Assignee: Exxon Chemical Patents Inc.Inventors: Richard S. Auda, William M. Davis, David Y. Chung, Lawrence W. Flatley, Brenton G. Jones, Donald A. White, Hans G. Woudboer
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Patent number: 5453465Abstract: A non-vulcanized thermoplastic composition comprising a polyamide and an elastomeric halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene is prepared by blending the polyamide and elastomeric copolymer in the presence of specified metal compounds in an amount insufficient for vulcanizing the composition. Optionally, the resulting composition may be subjected to vulcanization.Type: GrantFiled: May 14, 1993Date of Patent: September 26, 1995Assignee: Exxon Chemical Patents Inc.Inventors: Thomas C. Yu, Hsien C. Wang, Kenneth W. Powers
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Patent number: 5417930Abstract: A novel chemical reactor: one particularly useful for the production of polymers, especially elastomers such as butyl rubber. The reactor contains (1) a two-tube pass system, constituted of an inner or center tube bundle through which a mixture or slurry of polymerizable monomers and catalyst is passed in one direction, and recycled via an outer tube bundle in the opposite direction in essentially even flow distribution, (2) while the tubes of the center and outer tubular bundles are maintained within a jacketed section, or sections of the reactor into which a coolant, or refrigerant, is injected and vaporized to remove the heat of reaction. The coolant, or refrigerant, in heat exchange relationship with the tubes removes the exothermic heats of reaction from the polymerization mixture, and maintains the polymerization mixture at uniformly low temperature.Type: GrantFiled: June 21, 1994Date of Patent: May 23, 1995Assignee: Exxon Chemical Patents Inc.Inventors: Michael F. McDonald, Jr., David J. Lawrence, Donald A. Williams
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Patent number: 5386864Abstract: A composition suitable for use in producing a tire innerliner is provided. The composition comprises a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene; carbon black, and a plasticizer oil. A vulcanized tire comprising an innerliner made from the composition is also provided.Type: GrantFiled: April 26, 1994Date of Patent: February 7, 1995Assignee: Exxon Chemical Patents Inc.Inventors: Bernard J. Costemalle, James V. Fusco
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Patent number: 5376438Abstract: The invention is a multilayer tire sidewall having an outer layer prepared from a blend of isomonoolefin/para-alkylstyrene copolymer and general purpose rubbers. The inner layer comprises general purpose rubber. The resulting sidewall exhibit good ozone resistance and fatigue crack resistance as well as a reduction in staining and discloration.Type: GrantFiled: February 8, 1993Date of Patent: December 27, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Bernard Costemalle, Douglas D. Flowers, James V. Fusco, Marcel Steurs
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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: 5356950Abstract: A grafted polymer of an isomonoolefin and an alkylstyrene, such as a maleic anhydride-grafted copolymer of isobutylene and para-methylstyrene, is provided. Processes for preparing the grafted polymer are also provided.Type: GrantFiled: April 26, 1993Date of Patent: October 18, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Donald A. White, Hsien C. Wang
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Patent number: 5333662Abstract: A composition suitable for use in producing a tire innerliner is provided. The composition comprises a halogencontaining copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a paraalkylstyrene; carbon black, and a plasticizer oil. A vulcanized tire comprising an innerliner made from the composition is also provided.Type: GrantFiled: July 21, 1992Date of Patent: August 2, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Bernard J. Costemalle, James V. Fusco
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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: 5286804Abstract: A process for halogenating star-branched butyl rubber is provided wherein water and a wetting agent or wetting agent precursor are added to a solution comprising the star-branched butyl rubber, solid particles of branching agent and an organic solvent prior to the neutralization step to increase the rate of neutralization of the hydrogen halide by-product of the halogenation reaction.Type: GrantFiled: September 17, 1991Date of Patent: February 15, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Kenneth W. Powers, Hsien C. Wang, Robert N. Webb, James V. Fusco, Hans F. Vanbrackle, Michael F. McDonald, Jr.
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Patent number: 5269574Abstract: The present invention relates to a light weight, high performance bumper for automobiles and the like. It consists of an I-beam reinforced by one or more ribs which add support to the front wall. The bumper is fabricated from fiber reinforced thermoplastic or thermoset materials.Type: GrantFiled: November 23, 1992Date of Patent: December 14, 1993Assignee: Exxon Chemical Patents Inc.Inventors: Dinesh Bhutani, James A. Crandall
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Patent number: 5246778Abstract: A hose composition is provided which comprises a halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene, fillers, rubber compounding additives and a curing agent. A hose comprising at least a portion made from this hose composition is also provided.Type: GrantFiled: August 17, 1992Date of Patent: September 21, 1993Assignee: Exxon Chemical Patents Inc.Inventors: Bernard J. Costemalle, Robert C. Keller, Donald F. Kruse, James V. Fusco, Marcel A. Steurs
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Patent number: 5244961Abstract: A non-vulcanized thermoplastic composition comprising a polyamide and an elastomeric halogen-containing copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene is prepared by blending the polyamide and elastomeric copolymer in the presence of specified metal compounds in an amount insufficient for vulcanizing the composition. Optionally, the resulting composition may be subjected to vulcanization.Type: GrantFiled: September 19, 1991Date of Patent: September 14, 1993Assignee: Exxon Chemical Patents Inc.Inventors: Thomas C. Yu, Hsien C. Wang, Kenneth W. Powers
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Patent number: 5244971Abstract: Graft polymers for use as compatibilizers and/or modifiers for engineering thermoplastic compositions are provided comprising the reaction product of functionalized thermoplastic polymers with styrene-maleic anhydride copolymer. The functionalized thermoplastic polymers are based typically on polyolefin polymers and contain at least one functional group reactive either with styrene-maleic anhydride copolymer, or with direactive linking groups reactive with both of the functionalized thermoplastic polymer and styrene-maleic anhydride copolymer. The engineering thermoplastic compositions to be modified include polar engineering thermoplastics and the non-polar engineering thermoplastics based on styrene.Type: GrantFiled: July 22, 1991Date of Patent: September 14, 1993Assignee: Exxon Chemical Patents Inc.Inventor: Dekoninck Jean-Marc
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Patent number: 5238990Abstract: A thermoplastic composition is provided which comprises a polyamide, a grafted polymer of an isomonoolefin and an alkylstyrene, such as a maleic anhydride-grafted copolymer of isobutylene and para-methylstyrene, and optionally a polyolefin polymer.Type: GrantFiled: June 5, 1991Date of Patent: August 24, 1993Assignee: Exxon Chemical Patents Inc.Inventors: Thomas C. Yu, Donald A. White, Hsien C. Wang
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Patent number: 5225483Abstract: A thermoplastic composition is provided which comprises a blend of a thermoplastic, such as a copolymer of styrene and maleic anhydride; polypropylene; a modified elastomeric component, such as EPM or EPDM, which has been modified with a specified functional monomer, such as a 2-substituted-5-norbornene, and an amine-modified maleic anhydride grafted polypropylene. The composition has improved properties.Type: GrantFiled: July 22, 1991Date of Patent: July 6, 1993Assignee: Exxon Chemical Patents Inc.Inventors: Sudhin Datta, Narayanaswami R. Dharmarajan, Jean M. Dekoninck, Donald A. White
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Patent number: 5200469Abstract: A 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 produced by curing the corresponding uncrosslinked polymer having a low level of chemically bound halogen with a curing agent which reacts only with the halogen (e.g., zinc oxide) in combination with a bifunctional dienophile (e.g., a bismaleimide). The uncrosslinked elastomeric polymer is particularly suitable for use in the pharmaceutical industry, for example, for container closures. Shaped rubbery products comprising the crosslinked copolymer are also provided.Type: GrantFiled: April 18, 1990Date of Patent: April 6, 1993Assignee: Exxon Chemical Patents Inc.Inventor: Pierre Hous