Patents by Inventor Nicholas Benfaremo
Nicholas Benfaremo 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).
-
Patent number: 6166155Abstract: Processes for preparing polymers of vinylic monomers where polymerization is conducted in the presence of free-radical initiators and electron donors.Type: GrantFiled: October 28, 1997Date of Patent: December 26, 2000Assignees: BASF Aktiengesellschaft, Max Planck Gesellschaft zur Forderung der UissenschaftenInventors: Jurgen Koch, Michael Fischer, Klaus Muellen, Markus Klapper, Nicholas Benfaremo, Wiebke Wunderlich, Wolfgang Paulus
-
Patent number: 5534171Abstract: A polymeric lubricant additive that behaves as a viscosity index improver and imparts enhanced anti-oxidancy, dispersancy, and anti-wear properties to said lubricant oil has been prepared. The polymeric substrate is a random co- or terpolymer of ethylene propylene and a third monomer; or a block terpolymer of styrene--ethylenebutylene--styrene where hydrogenation has removed aliphatic unsaturation.Ethylenically unsaturated carboxylic acid or acid anhydride is grafted to these aforementioned substrates and imidized with amino-thiadiazole of the formula: ##STR1## wherein R.sub.1 is H.sub.2 or a (C.sub.1 -C.sub.10) alkyl radical selected from the group consisting of a alkyl, alkenyl, alkoxyl, aralkyl, alkaryl, hydroxyalkyl and aminoalkyl, to produce said polymeric lubricant additive.Type: GrantFiled: June 6, 1995Date of Patent: July 9, 1996Assignee: DSM Copolymer Inc.Inventors: Thomas F. Derosa, Nicholas Benfaremo, Maria M. Kapuscinski, Benjamin J. Kaufman, Rosemary J. Jennejahn
-
Patent number: 5472627Abstract: A polymeric lubricant additive that behaves as a viscosity index improver and imparts enhanced anti-oxidancy, dispersancy, and anti-wear properties to said lubricant oil has been prepared. The polymeric substrate is a random co- or terpolymer of ethylene propylene and a third monomer; or a block terpolymer of styrene-(ethylenebutylene)-styrene where hydrogenation has removed aliphatic unsaturation. Ethylenically unsaturated carboxylic acid or acid anhydride is grafted to these aforementioned substrates and imidized with amino-thiadiazole of the formula: ##STR1## wherein R.sub.1 is H.sub.2 or a (C.sub.1 -C.sub.10) alkyl radical selected from the group consisting of a alkyl, alkenyl, alkoxyl, aralkyl, alkaryl, hydroxyalkyl and aminoalkyl, to produce said polymeric lubricant additive.Type: GrantFiled: November 29, 1994Date of Patent: December 5, 1995Assignee: Texaco Inc.Inventors: Thomas F. DeRosa, Nicholas Benfaremo, Maria M. Kapuscinski, Benjamin J. Kaufman, Rosemary J. Jennejahn
-
Patent number: 5440000Abstract: A dispersant/antioxidant bound, Viscosity Index-improving methacrylate polymer composition having a molecular weight ranging from about 20,000 to about 2,500,000. The composition comprises a base oil and methacrylate monomers and antioxidant monomer with inherent dispersancy. The composition being prepared by:(a) mixing a antioxidant/dispersant monomer with alkyl methacrylates and an oil solvent to provide an intermediate reaction mixture;(b) stirring and purging said reaction mixture by nitrogen ebullation for about 25-35 minutes at about 200 ml/min;(c) heating said purged mixture to about 75.degree.-85.degree. C.;(d) adding both a chain transfer agent and a radical polymerization catalyst to said heated mixture and then after about 2.0 hours adding an additional amount of said catalyst to said heated mixture, and then heating said heated mixture for an additional 2.0 hours;(e) increasing the temperature of said heated mixture to about 95.degree.-105.degree. C.Type: GrantFiled: July 18, 1994Date of Patent: August 8, 1995Assignee: Texaco Inc.Inventors: Shailaja M. Shirodkar, Nicholas Benfaremo, Rosemary J. Jennejahn
-
Patent number: 5374364Abstract: Multifunctional viscosity index improvers for lubricating oils containing an EPM or EPDM polymer with pendant thiazoline units.Type: GrantFiled: September 3, 1993Date of Patent: December 20, 1994Assignee: Texaco Inc.Inventors: Maria M. Kapuscinski, Nicholas Benfaremo, Robert T. Biggs
-
Patent number: 5122161Abstract: A diesel fuel composition comprising:(a) a major portion of a diesel fuel, and(b) a minor amount, as a diesel fuel injector detergent, of a glycolated Mannich coupled product of bis-polyisobutylene succinimide of a polyamine, prepared by:(i) reacting an alkenylsuccinic acid anhydride with a polyamine to form a bis-succinimide;(ii) treating the bis-succinimide with a phenol in the presence of an aldehyde to form a Mannich phenol coupled bis-succinimide product;(iii) glycolating the Mannich phenol coupled bis-succinimide product with glycolic acid to form a glycolated Mannich phenol coupled bis-succinimide product; and(iv) recovering the glycolated Mannich phenol coupled bis-succinimide product.Type: GrantFiled: December 31, 1990Date of Patent: June 16, 1992Assignee: Texaco Inc.Inventors: Nicholas Benfaremo, Kashmir S. Virk, Sheldon Herbstman
-
Patent number: 5075383Abstract: An additive composition comprising a graft and amine-derivatized copolymer prepared from ethylene and at least one C.sub.3 to C.sub.10 alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 to C.sub.10 alpha-monoolefin and from about 0 to 15 mole percent of said polyene, said copolymer having a number average molecular weight ranging from about 5,500 to 50,000 and having grafted thereon at least 1.8 molecules of a carboxylic acid acylating function per molecule of said copolymer and reacting said grafted copolymer with an amino-aromatic polyamine compound from the group consisting of an N-arylphenylenediamine, an aminocarbazole, an aminoindole, an amino-indazolinone, an aminomercaptotriazole, and an amino-perimidine to form said graft and amine-derivatized copolymer, and a lubricating oil composition containing same are provided.Type: GrantFiled: December 17, 1990Date of Patent: December 24, 1991Assignee: Texaco Inc.Inventors: Cyril A. Migdal, Theodore E. Nalesnik, Nicholas Benfaremo, Christopher S. Liu
-
Patent number: 5039307Abstract: A diesel fuel composition comprising:(a) a major portion of a diesel fuel, and(b) a minor amount, as a diesel fuel injector detergent additive, of a Mannich coupled product of bis-polyisobutylene succinimide of an amine, prepared by:(i) reacting an alkenyl succinimide acid anhydride with an amine to form a bis-succinimide;(ii) treating the bis-succinimide with nonylphenol in the presence of an aldehyde to form a Mannich phenol coupled bis-succinimide product; and(iii) recovering the product Mannich phenol coupled bis-succinimide.Type: GrantFiled: October 1, 1990Date of Patent: August 13, 1991Assignee: Texaco Inc.Inventors: Sheldon Herbstman, Kashmir S. Virk, Theodore E. Nalesnik, Nicholas Benfaremo
-
Patent number: 5030249Abstract: A gasoline composition comprising:(a) a major portion of a gasoline fuel, and(b) a minor amount, as a gasoline detergent additive, of a Mannich coupled product of bis-polyisobutylene succinimide of an amine, prepared by:(i) reacting an alkenyl succinimide acid anhydride with an amine to form a bis-succinimide;(ii) treating the bis-succinimide with nonylphenol in the presence of an aldehyde to form a Mannich phenol coupled bis-succinimide product; and(iii) recovering the product Mannich phenol coupled bis-succinimide.Type: GrantFiled: October 1, 1990Date of Patent: July 9, 1991Assignee: Texaco Inc.Inventors: Sheldon Herbstman, Thomas E. Hayden, Theodore E. Nalesnik, Nicholas Benfaremo
-
Patent number: 5013468Abstract: A dispersant/antioxidant bound VII polymethacrylate lubricant additive composition prepared by:(a) reacting a methacrylamide with an amino-alkyl, methacrylamide, an alkyl methacrylate and an oil solvent to provide a intermediate reaction mixture;(b) stirring and purging the reaction mixture;(c) heating the purged mixture and adding a mercaptan and a radical polymerization catalyst to the purged mixture;(d) heating the mixture to a sufficiently high temperature to remove any excess of the polynmerization catalyst therefrom; and(e) recovering the product polymethacrylate.Type: GrantFiled: October 10, 1989Date of Patent: May 7, 1991Assignee: Texaco Inc.Inventor: Nicholas Benfaremo
-
Patent number: 4941985Abstract: A dispersant/antioxidant bound VII polymethacrylate lubricant additive composition prepared by:(a) combining a polyunsaturated monomer with (C.sub.1 -C.sub.20) alkyl monomers and, optionally, a dispersant monomer in an oil solvent to provide an intermediate reaction mixture;(b) stirring and purging the reaction mixture;(c) heating the purged mixture and adding a radical polymerization catalyst to the purged mixture;(d) heating the mixture to a sufficiently high temperature to remove any excess of the polymerization catalyst therefrom;(e) (optionally) recovering the intermediate product polymethacrylate;(f) combining the intermediate product with an aromatic nitroso compound to provide an intermediate reaction mixture;(g) stirring and purging the intermediate reaction mixture; and(h) recovering from the purged mixture the product polymethacrylate.Type: GrantFiled: December 1, 1989Date of Patent: July 17, 1990Assignee: Texaco Inc.Inventors: Nicholas Benfaremo, Maria M. Kapuscinski, Theodore E. Nalesnik
-
Patent number: 4904404Abstract: A lubricating oil contains, as a multifunctional additive, a polymer such as an ethylene - propylene copolymer, bearing graft moieties derived from allyl glycidyl ether, or glycidyl methacrylate as a graft monomer polymer being functionalized with (i) N-vinyl pyrrolidone and (ii) a Mannich base formed by the reaction p-nonyl phenol, N-(aminoethyl) piperazine, and formaldehyde.Type: GrantFiled: March 7, 1989Date of Patent: February 27, 1990Assignee: Texaco Inc.Inventors: Christopher S. Liu, Nicholas Benfaremo, Maria M. Kapuscinski, Larry D. Grina
-
Patent number: 4812261Abstract: Lubricating oil of improved dispersancy and anti-oxidancy contains an ethylene-propylene copolymer onto which has been graft polymerized allyl glycidyl ether, the graft polymer having been thereafter functionalized with (i) N-vinyl pyrrolidone and (ii) a Mannich base formed from N-(aminoethyl) piperazine, formaldehyde, and nonyl phenol.Type: GrantFiled: August 12, 1987Date of Patent: March 14, 1989Assignee: Texaco Inc.Inventors: Christopher S. Liu, Nicholas Benfaremo, Maria M. Kapuscinski, Larry D. Grina
-
Patent number: 4713189Abstract: A lubricating oil composition having improved dispersancy and viton seal compatibility. The dispersant being prepared by coupling two polyethyleneamines with an aldehyde and a phenol, followed by conversion to a succinimide. The resulting coupled succinimide is then acylated with glycolic acid to form a glycolated Mannich phenol coupled mono-alkenyl succinimide.Type: GrantFiled: August 20, 1986Date of Patent: December 15, 1987Assignee: Texaco, Inc.Inventors: Theodore E. Nalesnik, Nicholas Benfaremo
-
Patent number: 4699724Abstract: A lubricating oil composition having improved dispersancy and viton seal compatibility. The dispersant being prepared by coupling two mono-alkenyl succinimides with an aldehyde and a phenol. The resulting coupled succinimide is then acylated with glycolic acid to form a glycolated Mannich phenol coupled mono-alkenyl succinimide.Type: GrantFiled: August 20, 1986Date of Patent: October 13, 1987Assignee: Texaco Inc.Inventors: Theodore E. Nalesnik, Nicholas Benfaremo