Patents by Inventor Mark J. Struglinski
Mark J. Struglinski 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: 5543469Abstract: The present invention relates to hydrogenated block copolymers of butadiene and at least one other diene, preferably isoprene. The copolymer is hydrogenated and comprises at least 10% by weight of at least one crystallizable segment and at least one low crystallinity segment.Type: GrantFiled: January 20, 1995Date of Patent: August 6, 1996Assignee: Exxon Chemical Patents Inc.Inventors: Mark J. Struglinski, Gary W. Ver Strate, Lewis J. Fetters
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Patent number: 5446221Abstract: The present invention is directed to a lubricating oil composition exhibiting improved viscosity index comprising lubricating oil and a viscosity improving effective amount of ethylene alpha-olefin polymer comprising monomer units derived from ethylene and at least one alpha-olefin represented by the formula H.sub.2 C.dbd.CHR.sup.1 wherein R.sup.1 is an alkyl group of from 1 to 18 carbon atoms, wherein said polymer has a number average molecular weight of from above 25,000 to about 500,000, wherein an average of at least about 30 percent of the polymer chains contain terminal ethenylidene unsaturation, and wherein said polymer is prepared in the presence of a catalyst system comprising at least one metallocene and an alumoxane compound.Type: GrantFiled: May 20, 1994Date of Patent: August 29, 1995Assignee: Exxon Chemical Patents Inc.Inventor: Mark J. Struglinski
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Patent number: 5427702Abstract: The present invention relates to novel multifunctional viscosity modifiers comprising a mixture of derivatized ethylene-alpha olefin copolymers, A and B. Said A copolymer comprising from about 30 to about 60 weight percent monomer units derived from ethylene and said B copolymer comprising from about 60 to about 80 weight percent units derived from ethylene.Type: GrantFiled: December 11, 1992Date of Patent: June 27, 1995Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Paul Brice, Steven J. Searis, Mark J. Struglinski, John B. Gardiner
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Patent number: 5401427Abstract: Degraded molecular weight copolymers of ethylene alpha-olefin are provided. The ethylene alpha-olefin copolymers, before degradation, are characterized by having a narrow molecular weight distribution and are comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains. The degraded copolymers are useful as viscosity index improvers for oils.Type: GrantFiled: June 18, 1993Date of Patent: March 28, 1995Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Mark J. Struglinski
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Patent number: 5348673Abstract: Composition of matter useful as multifunctional viscosity index improver for lubricating oil comprising reaction product of: (i) (a) molecular weight degraded ethylene-alpha-olefin copolymer obtained by degrading copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and a ratio of M.sub.z /M.sub.w of less than 1.8, and said degraded copolymer grafted with (b) ethylenically monounsaturated carboxylic acid material having 1 to 2 carboxylic acid groups or anhydride group to form grafted ethylene copolymer; (ii) about C.sub.50 to about C.sub.Type: GrantFiled: December 8, 1993Date of Patent: September 20, 1994Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Antonio Gutierrez, Mark J. Struglinski
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Patent number: 5312556Abstract: A multifunctional viscosity index improver for lubricating oils comprising reaction product of:(i) (a) degraded ethylene-alpha-olefin copolymer obtained by degrading undegraded copolymer of ethylene and at least one other alpha-olefin monomer, said undegraded copolymer comprising intramolecularly heterogeneous copolymer chain containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains at least about 57 weight percent of said copolymer chain and contains at least about 57 weight percent ethylene, wherein said low crystallinity segment contains not greater than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and a ratio of M.sub.z /M.sub.w of less than 1.Type: GrantFiled: August 6, 1992Date of Patent: May 17, 1994Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Mark J. Struglinski
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Patent number: 5310490Abstract: The present invention relates to hydrogenated block copolymers of butadiene and at least one other diene, preferably isoprene. The copolymer is hydrogenated and comprises at least 10% by weight of at least one crystallizable segment and at least one low crystallinity segment.Type: GrantFiled: March 13, 1991Date of Patent: May 10, 1994Assignee: Exxon Chemical Products Inc.Inventors: Mark J. Struglinski, Gary W. Ver Strate, Lewis J. Fetters
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Patent number: 5310814Abstract: The present invention relates to hydrogenated polybutadiene comprising monomeric units of 1,4-butadiene and 1,2-butadiene addition products. The copolymer is hydrogenated and comprises at least 10% by weight of at least one crystallizable segment and at least one low crystallinity segment.Type: GrantFiled: March 15, 1991Date of Patent: May 10, 1994Assignee: Exxon Chemical Patents Inc.Inventors: Mark J. Struglinski, Gary W. VerStrate, Lewis J. Fetters
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Patent number: 5290868Abstract: An oil soluble nitrogen containing grafted degraded ethylene copolymers useful as multifunctional viscosity index improvers or modifiers, such as VI improver-dispersant additives. The nitrogen containing grafted degraded ethylene copolymers are grafted with an ethylenically unsaturated carboxylic acid grafting material and the grafted degraded ethylene copolymers are then reacted with at least one polyamine containing one primary amine group and at least one or more secondary amine groups.Type: GrantFiled: September 16, 1992Date of Patent: March 1, 1994Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Antonio Gutierrez, Mark J. Struglinski
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Patent number: 5290461Abstract: Composition of matter useful as multifunctional viscosity index improver for lubricating oil comprising reaction product of:(i) (a) degraded ethylene-alpha-olefin copolymer obtained by degrading copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains at least about 57 weight percent ethylene, wherein said low crystallinity segment contains not greater than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and a ratio of M.sub.z /M.sub.w of less than 1.Type: GrantFiled: March 10, 1992Date of Patent: March 1, 1994Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Antonio Gutierrez, Mark J. Struglinski
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Patent number: 5262075Abstract: Multifunctional viscosity index improver additives for oleaginous composition comprising reaction products of (i)(a) ethylene-alpha-olefin copolymers grafted with (i)(b) carboxylic acid material, further reacted with (ii) at least one of polyamine, polyol, about C.sub.30 -C.sub.400 hydrocarbyl substituted carboxylic acid component together with polyol, or said carboxylic acid component together with polyamine, wherein the copolymer (i)(a) comprises intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and a ratio of M.sub.n /M.sub.w of less than 1.8.Type: GrantFiled: October 26, 1992Date of Patent: November 16, 1993Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, John E. Johnston, Mark J. Struglinski
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Patent number: 5252238Abstract: The present invention is directed to a viscosity index improver for lubricating oil compositions comprising the reaction product of A) a copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer grafted with ethylenically monounsaturated carboxylic acid material and B) amido-amine or thioamido-amine comprising the reaction product of a polyamine and alpha, beta-unsaturated compound of the formula ##STR1## wherein X is oxygen or sulfur, Y is OR.sup.4, --SR.sup.4 or ##STR2## and R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are independently selected from hydrogen, hydrocarbyl and substituted hydrocarbyl.Type: GrantFiled: June 27, 1991Date of Patent: October 12, 1993Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Antonio Gutierrez, John E. Johnston, Mark J. Struglinski, Robert D. Lundberg
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Patent number: 5244590Abstract: Degraded molecular weight copolymers of ethylene alpha-olefin are provided. The ethylene alpha-olefin copolymers, before degradation, are characterized by having a narrow molecular weight distribution and are comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains. The degraded copolymers are useful as viscosity index improvers for oils.Type: GrantFiled: July 11, 1991Date of Patent: September 14, 1993Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Mark J. Struglinski
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Patent number: 5167848Abstract: Oil soluble grafted ethylene-alpha-olefin copolymer useful as a viscosity modifier for oleaginous compositions comprising:(i) backbone copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crysallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains at least about 57 weight percent ethylene, wherein said low crystallinity segment contains not greater than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and a ratio of M.sub.w /M.sub.w of less than 1.Type: GrantFiled: May 30, 1989Date of Patent: December 1, 1992Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Mark J. Struglinski, John E. Johnston
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Patent number: 5151204Abstract: The present invention is directed to a lubricating oil composition exhibiting improved viscosity index comprising lubricating oil and a viscosity improving effective amount of ethylene alpha-olefin polymer comprising monomer units derived from ethylene and at least one alpha-olefin represented by the formula H.sup.2 C=CHR.sup.1 wherein R.sup.1 is an alkyl group of from 1 to 18 carbon atoms, and wherein said polymer has a number average molecular weight of from above 20,000 to about 500,000, and an average of at least about 30% of the polymer chains contain terminal ethylidene unsaturation.Type: GrantFiled: February 1, 1990Date of Patent: September 29, 1992Assignee: Exxon Chemical Patents Inc.Inventor: Mark J. Struglinski
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Patent number: 5118433Abstract: Composition of matter useful as multifunctional viscosity index improver for lubricating oil comprising reaction product of:(i)(a) degraded ethylene-alpha-olein copolymer obtained by degrading copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains at least about 57 weight percent ethylene, wherein said low crystallinity segment contains not greater than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M.sub.w /M.sub.n of less than 2 and a ratio of M.sub.z /M.sub.w of less than 1.Type: GrantFiled: October 12, 1989Date of Patent: June 2, 1992Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Antonio Gutierrez, Mark J. Struglinski
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Patent number: 5068047Abstract: Degraded molecular weight copolymers of ethylene alpha-olefin are provided. The ethylene alpha-olefin copolymers, before degradation, are characterized by having a narrow molecular weight distribution and are comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains. The degraded copolymers are useful as viscosity index improvers for oils.Type: GrantFiled: October 12, 1989Date of Patent: November 26, 1991Assignee: Exxon Chemical Patents, Inc.Inventors: David Y. Chung, Mark J. Struglinski
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Patent number: 5053151Abstract: The present invention is directed to a viscosity index improver for lubricating oil compositions comprising the reaction product of A a copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer grafted with ethylenically monoansaturataed carboxylic acid material and B amido-amine or thioamido-amine comprising the reaction product of a polyamine and alpha, beta-unsaturated compound of the formula ##STR1## wherein X is oxygen or sulfur, Y is OR.sup.4, --SR.sup.4 or ##STR2## and R.sup.1, R.sup.2, R.sup.3 R.sup.4 and R.sup.5 are independently selected from hydrogen, hydrocarbyl and substituted hydrocarbyl.Type: GrantFiled: May 30, 1989Date of Patent: October 1, 1991Assignee: Exxon Chemical Patents Inc.Inventors: David Y. Chung, Antonio Gutierrez, John E. Johnston, Mark J. Struglinski, Robert D. Lundberg
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Patent number: 4900461Abstract: The present invention relates to novel copolymers of alpha-olefins comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains.Type: GrantFiled: May 13, 1988Date of Patent: February 13, 1990Assignee: Exxon Chemical Patents Inc.Inventors: Gary Ver Strate, Ricardo Bloch, Mark J. Struglinski, John E. Johnston, Roger K. West
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Patent number: 4804794Abstract: The present invention relats to novel copolymers of alpha-olefins comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains.Type: GrantFiled: July 13, 1987Date of Patent: February 14, 1989Assignee: Exxon Chemical Patents Inc.Inventors: Gary Ver Strate, Ricardo Bloch, Mark J. Struglinski, John E. Johnston, Roger K. West