Patents by Inventor Ilan Duvdevani
Ilan Duvdevani 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: 4970117Abstract: A composite comprising: a substrate; and a polymeric coating adhered to at least one surface of said substrate, said polymer coating having a thickness of about 1 to about 100 micrometers, wherein said polymer coating comprises a neutralized carboxylated polymer having a carboxylate content of about 5 to about 300 meq. per 100 grams of said neutralized carboxylated polymer.Type: GrantFiled: October 28, 1988Date of Patent: November 13, 1990Assignee: Exxon Research and Engineering CompanyInventors: Ilan Duvdevani, Pacifico V. Manalastas, Evelyn N. Drake
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Patent number: 4942189Abstract: The present invention relates to a process for the viscosification of an aqueous liquid which includes the steps of forming a solvent system of an organic liquid or oil and a polar cosolvent, the polar cosolvent being less than about 15 weight percent of the solvent system, a viscosity of the solvent system being less than about 1,000 cps; forming an interpolymer complex of neutralized sulfonated polymer (water insoluble) and copolymer of styrene/vinylpyridine in the solvent system to form a solution, a concentration of the water insoluble interpolymer complex polymer in the solution being about 0.01 to about 0.5 weight percent, a viscosity of the solution being less than about 200 cps; the admixing or contacting said solution with about 5 to about 500 volume percent water, the water being immiscible with the organic liquid and the polar cosolvent and interpolymer complex transferring from the organic liquid to the water phase, thereby causing the water phase to gel (i.e., thicken).Type: GrantFiled: July 31, 1989Date of Patent: July 17, 1990Assignee: Exxon Research and Engineering CompanyInventors: Dennis G. Peiffer, Robert D. Lundberg, Ilan Duvdevani
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Patent number: 4935301Abstract: The present invention relates a cement composite containing glass fibers encapsulated with a polymeric coating which is formed from an organic solution of an interpolymer complex of an anionic polymer and a cationic polymer.Type: GrantFiled: July 17, 1989Date of Patent: June 19, 1990Assignee: Exxon Research and Engineering CompnayInventors: Hans J. Rerup, Evelyn N. Drake, Ilan Duvdevani
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Patent number: 4923517Abstract: The present invention relates a cement composite containing glass fibers encapsulated with a polymeric coating which is formed from an organic solution of an interpolymer complex of an anionic polymer and a cationic polymer.Type: GrantFiled: December 16, 1988Date of Patent: May 8, 1990Assignee: Exxon Research and Engineering CompanyInventors: Hans J. Rerup, Evelyn N. Drake, Ilan Duvdevani
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Patent number: 4904722Abstract: A method for controlling the viscosity of organic liquids, said organic liquid having a solubility parameter of less than 9.5, a viscosity, as measured at 25.degree. C., of less than 200 centipoises and said organic liquid is selected from the group consisting of mineral oils, synthetic oils, naphthanes, alkanes, cycloalkanes and aromatics and mixtures thereof, which comprises incorporating in said organic liquid about 0.01 to 20 grams of polymer complex per 100 ml. of said organic liquid, said polymer complex being formed "in situ" in said organic liquid or dissolved in said organic liquid, said complex being comprised of polymer A, containing about 4 meq. to 500 meq. of neutralized sulfonate groups, and polymer B, containing basic nitrogen groups, both functional groups being present at a level of from about 4 to 500 meq. per 100 g. of polymer, wherein polymer B has the formula: ##STR1## wherein x is about 50.0 to 99.8 weight percent and y is about 0.2 to about 50.Type: GrantFiled: October 18, 1985Date of Patent: February 27, 1990Assignee: Exxon Research and Engineering CompanyInventors: Robert D. Lundberg, Robert R. Phillips, Dennis G. Peiffer, Ilan Duvdevani
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Patent number: 4882405Abstract: A water or brine soluble terpolymer having the structure: ##STR1## wherein X is selected from the group consisting of ##STR2## wherein x is about 1 to about 95 mole percent; y is about 0.1 to about 5.0 mole percent; R.sub.1 is methyl or hydrogen; z is 1 to 29 mole percent; R.sub.2 is an alkyl group of 1-5 carbon atoms; R.sub.3 is an alkyl group of 3 to 4 carbon atoms; R.sub.4 is an alkyl group of 1-5 carbon atoms; and R.sub.5 is an alkyl group of 4-20.Type: GrantFiled: October 19, 1988Date of Patent: November 21, 1989Assignee: Exxon Research and Engineering CompanyInventors: Donald N. Schulz, Ilan Duvdevani, Jan Bock, Enock Berluche
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Patent number: 4880436Abstract: A method of viscosifying an organic liquid which comprises adding a sufficient quantity of a hydrolyzed Ziegler Natta-ester containing copolymer haivng a molecular weight of about 100,00 to about 10,000,000 to said organic liquid to increase the viscosity of said organic liquid, said copolymer having the formula: ##STR1## wherein R.sub.1 is an alkyl group having about 4 to about 6 carbon atoms, R.sub.2 is an alkylene group having 3 to 16 carbon atoms, x is about 95.0 to about 99.95 mole % and y is about 0.05 to about 5.0 mole %.Type: GrantFiled: November 20, 1987Date of Patent: November 14, 1989Assignee: Exxon Research and Engineering CompanyInventors: Kissho Kitano, Ilan Duvdevani, Donald N. Schulz
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Patent number: 4801498Abstract: A composite comprising: a substrate; and a polymeric coating adhered to at least one surface of said substrate, said polymer coating having a thickness of about 1 to about 100 micrometers, wherein said polymer coating comprises a neutralized carboxylated polymer having a carboxylate content of about 5 to about 300 meq. per 100 grams of said neutralized carboxylated polymer.Type: GrantFiled: October 27, 1986Date of Patent: January 31, 1989Assignee: Exxon Research and Engineering CompanyInventors: Ilan Duvdevani, Pacifico V. Manalastas, Evelyn N. Drake
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Patent number: 4788247Abstract: A water or brine soluble terpolymer having the structure: ##STR1## wherein x is selected from the group consisting of ##STR2## wherein x is about 70 to about 95 mole percent; y is about 0.1 to about 5.0 mole percent; z is about 1 to about 30 mole percent; R.sub.1 is methyl or hydrogen; a is about 1 to about 5; b is about 3 to about 4; R.sub.3 is an alkyl group of 3 to 4 carbon atoms; R.sub.4 is an alkyl group having about 1 to 5 carbon atoms; R.sub.5 is selected from the group consisting of an alkyl group having 1 to 30 carbons, a hydrocarbon aryl group having about 6 to 20 carbons and an alkylaryl group having the structure of ##STR3## wherein A is selected from the group consisting of hydrogen, methyl groups, ethyl groups and propyl groups and mixtures thereof and c is about 6 to 20; and n is about 1 to 60.Type: GrantFiled: November 16, 1987Date of Patent: November 29, 1988Assignee: Exxon Research and Engineering CompanyInventors: Donald N. Schulz, Ilan Duvdevani, Jan Bock, Jeff J. Kaladas
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Patent number: 4742135Abstract: A water soluble terpolymer having the structure: ##STR1## wherein x is selected from the group consisting of ##STR2## wherein x is about 1 to about 95 mole percent; y is about 0.1 to about 5.0 mole percent; R.sub.1 is methyl or hydrogen; z is about 1 to about 30 mole percent; R.sub.2 is an alkyl group of 1-5 carbon atoms; R.sub.3 is an alkyl group of 3 to 4 carbon atoms; R.sub.4 is an alkyl group of 1-5 carbon atoms; and R.sub.5 is an alkyl group of 4-20.Type: GrantFiled: December 4, 1986Date of Patent: May 3, 1988Assignee: Exxon Research and Engineering CompanyInventors: Donald N. Schulz, Ilan Duvdevani, Jan Bock, Enock Berluche
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Patent number: 4738997Abstract: A bitumen-containing composition which comprises;(a) bitumen;(b) about 0.5 to about 30 parts by weight of a polymer complex per 100 parts by weight of the bitumen; and(c) about 0 to about 100 parts by weight of a filler per 100 parts by weight of the bitumen.Type: GrantFiled: December 11, 1985Date of Patent: April 19, 1988Assignee: Exxon Research and Engineering CompanyInventors: Robert D. Lundberg, Ilan Duvdevani, Dennis G. Peiffer
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Patent number: 4737534Abstract: The instant invention relates to a process for controlling the viscosity of organic liquids by incorporating in said liquid a minor amount of polymer complex, and optionally a cosolvent for the ionic groups of said polymer. The polymer complex comprises the reaction product of a metal neutralized sulfonated polymer and a basic nitrogen-containing polymer, wherein the polymer complex is substantially soluble in said organic liquid, and pendant sulfonate groups which are substantially insoluble in said organic liquid. The optional cosolvent is selected which will solubilize the pendant sulfonate groups and provide a reasonably homogeneous mixture of solvent, cosolvent and polymer complex. The preferred compositions prepared by the method of the instant invention comprise an organic liquid having a solubility parameter of from 6 to 10.5 in combination with a polymer complex containing from 0.2 up to 10.Type: GrantFiled: April 8, 1985Date of Patent: April 12, 1988Assignee: Exxon Research and Engineering CompanyInventors: Robert D. Lundberg, Robert R. Phillips, Dennis G. Peiffer, Ilan Duvdevani
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Patent number: 4715865Abstract: A method of viscosifying an organic liquid which comprises adding a sufficient quantity of a hydrolyzed Ziegler Natta-ester containing copolymer having a molecular weight of about 100,000 to about 10,000,000 to said organic liquid to increase the viscosity of said organic liquid, said copolymer having the formula: ##STR1## wherein R.sub.1 is an alkyl group having about 4 to about 6 carbon atoms, R.sub.2 is an alkylene group having about 3 to about 17 carbon atoms, x is about 95.0 to about 99.95 mole % and y is about 0.05 to about 5.0 mole %.Type: GrantFiled: December 9, 1985Date of Patent: December 29, 1987Assignee: Exxon Research and Engineering CompanyInventors: Kissho Kitano, Ilan Duvdevani, Donald N. Schulz
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Patent number: 4701263Abstract: A process for flocculating solid fines from a solution comprising said solid fine and an organic liquid which comprises the steps of:(a) adding with mixing about 5 to about 10,000 ppm of an unneutralized or neutralized sulfonated polystyrene to said solution; and(b) heating at about 25.degree. C. to about 350.degree. C. for about 1 to abou 45 minutes the mixture of said solution and said neutralized or unneutralized polystyrene.Type: GrantFiled: December 23, 1985Date of Patent: October 20, 1987Assignee: Exxon Research and Engineering CompanyInventors: Donald J. Mintz, Dennis G. Peiffer, Warren A. Thaler, Ilan Duvdevani
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Patent number: 4701204Abstract: A composite comprising a substrate and an elastomeric coating adhered to at least one surface of said substrate, said elastomeric coating having a thickness of about 1 to about 100 micrometers, wherein said elastomeric coating comprises an interpolymeric complex of a neutralized sulfonated polymer and an amine containing polymer, said neutralized sulfonated polymer having a sulfonate content of about 4 to about 200 meq. per 100 grams of said neutralized sulfonated polymer and said amine containing polymer containing basic nitrogen atoms wherein the basic nitrogen content ranges from about 4 to about 500 meq. per 100 grams of polymer.Type: GrantFiled: December 12, 1985Date of Patent: October 20, 1987Assignee: Exxon Research and Engineering CompanyInventors: Ilan Duvdevani, Pacifico V. Manalastas, Evelyn N. Drake, Warren A. Thaler
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Patent number: 4665115Abstract: A method for controlling the viscosity of organic liquids, said organic liquid having a solubility parameter of from about 6 to about 10.5, which comprises incorporating in said organic liquid a minor amount of a polymer complex, said complex being comprised of polymer A, containing neutralized sulfonate groups and polymer B, containing basic nitrogen groups, both functional groups being presented at a level of from about 4 to 500 meq. per 100 g. of polymer, wherein polymer B has the formula: ##STR1## wherein R.sub.1 is H or an alkyl group having about 1 to about 8 carbon atoms, R.sub.2 is an alkyl group having about 1 to about 18 carbon atoms, x is about 50.0 to 99.8 weight percent and x is about 0.2 to about 50.0 weight percent.Type: GrantFiled: September 27, 1985Date of Patent: May 12, 1987Assignee: Exxon Research and Engineering CompanyInventors: Robert D. Lundberg, Robert R. Phillips, Dennis G. Peiffer, Ilan Duvdevani
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Patent number: H316Abstract: A method for reducing the frictional drag of an organic liquid in flow through pipes or conduits having a continuous bore therethrough which comprises adding about 0.001 to about 0.5 grams of a polymeric complex to 100 ml of said organic liquid, wherein the polymeric complex is the reaction product of a metal neutralized sulfonated octene-1/ethylene/ethylidene norborene terpolymer and a basic nitrogen-containing copolymer, said basic nitrogen containing copolymer being a copolymer of vinylpyridine with another monomer selected from the group consisting of styrene, t-butyl styrene, alkylacrylate, alkylmethacrylate, butadiene, isoprene, vinyl chloride and acrylonitrile.Type: GrantFiled: May 2, 1986Date of Patent: August 4, 1987Assignee: Exxon Research and Engineering Co.Inventors: Ralph M. Kowalik, Joseph Wagensommer, Ilan Duvdevani, Pawan K. Agarwal
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Patent number: H363Abstract: A method for improving the antimisting properties of an organic liquid which comprises the step of dissolving about 0.1 to about 3.0 weight percent of a neutralized sulfonated polymer in such organic liquid, having a solubility parameter of less than 9, wherein said neutralized sulfonated polymer has about 5 to about 200 meq. of pendant sulfonate groups per 100 grams of polymer and about 90.0 to 100% of said sulfonate groups are neutralized, wherein the solution of the organic liquid and the neutralized sulfonated polymer has an approximate polymer concentration, C.sub.A, which can be characterized by the formula: ##EQU1## wherein [.eta.] is the intrinsic viscosity of said solution and the polymer concentration range is 0.1 times to 10 times C.sub.A.Type: GrantFiled: December 12, 1985Date of Patent: November 3, 1987Assignee: Exxon Reseach and Engineering CompanyInventors: Ilan Duvdevani, Robert D. Lundberg
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Patent number: H818Abstract: This invention relates to extrusion and injection moldable type elastomeric compositions having a viscosity at 200.degree. C. at 0.73 sec.sup.-1 of about 8.times.10.sup.4 to about 8.times.10.sup.6 poises. The compositions used for elastomeric articles include neutralized sulfonated co- and terpolymers of octene-1/ethylene/ENB or sulfonated terpolymers of hexene-1/ethylene/ENB, about 15 to about 200 parts by weight of a non-polar process oil per 100 parts of polymer; about 50 to about 300 parts by weight of a filler per 100 parts of polymer; and a preferential plasticizer at about 1 to about 50 parts by weight per 100 parts of the sulfonated elastomeric polymer. The composition may also include a crystalline polyolefinic thermoplastic at less then about 100 parts per hundred by weight.Type: GrantFiled: April 3, 1987Date of Patent: September 4, 1990Assignee: Exxon Research & Engineering Co.Inventors: Joseph Wagensommer, Pawan K. Agarwal, Ilan Duvdevani
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Patent number: H1077Abstract: The present invention relates to a process for the viscosification of an aqueous liquid which includes the steps of forming a solvent system of an organic liquid or oil and a polar cosolvent, the polar cosolvent being less than about 15 weight percent of the solvent system, a viscosity of the solvent system being less than about 1,000 cps; forming an interpolymer complex of neutralized sulfonated polymer (water insoluble) and copolymer of styrene/vinylpyridine in the solvent system to form a solution, a concentration of the water insoluble interpolymer complex polymer in the solution being about 0.01 to about 0.5 weight percent, a viscosity of the solution being less than about 200 cps; and admixing or contacting said solution with about 5 to about 500 volume percent water, the water being immiscible with the organic liquid and the polar cosolvent and interpolymer complex transferring from the organic liquid to the water phase, thereby causing the water phase to gel (i.e., thicken).Type: GrantFiled: May 21, 1990Date of Patent: July 7, 1992Inventors: Dennis G. Peiffer, Robert D. Lundberg, Ilan Duvdevani