Patents by Inventor Sheldon Herbstman

Sheldon Herbstman 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: 5925151
    Abstract: A detergent additive composition for diesel fuel contains a low molecular weight polyisobutylene monosuccinimide of polyethylene polyamine in an aromatic hydrocarbon diluent. The detergent additive composition may be used to remove or prevent engine deposits and their corrosive effects.
    Type: Grant
    Filed: September 19, 1996
    Date of Patent: July 20, 1999
    Assignee: Texaco Inc
    Inventors: Elaine C. DeCanio, Sheldon Herbstman, Benjamin J. Kaufman, Brian L. Papke
  • Patent number: 5509943
    Abstract: The present invention provides a novel class of compounds, useful as gasoline detergent additives, comprising hydrocarbyloxypolyether allophonate esters of 2-hydroxy ethane. The present invention also provides a motor fuel composition containing the novel allophonate esters and further provides a method of synthesizing the allophonate esters of the present invention.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: April 23, 1996
    Assignee: Texaco Inc.
    Inventors: Sheldon Herbstman, Constance A. Cadorette
  • Patent number: 5490864
    Abstract: A diesel fuel composition which is comprised of:(a) a major portion of a low-sulfur content diesel fuel; and(b) a minor amount, as an anti-wear lubricity additive, of a dithiophosphoric diester-dialcohol.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: February 13, 1996
    Assignee: Texaco Inc.
    Inventors: Sheldon Herbstman, Doris Love, Michael P. Petrus, Cyril A. Migdal
  • Patent number: 5484462
    Abstract: A fuel composition comprising a mixture of hydrocarbons boiling in the range from about 320.degree. F. to 620.degree. F. and a sulfur content of about 0.05 wt. %, or below, containing from about 1 to about 20 PTB of aminoalkylmorpholine having the formula: ##STR1## where R is hydrogen of a C.sub.1 -C.sub.10 alkyl radical, and n is a number between 2 and about 10.
    Type: Grant
    Filed: September 21, 1994
    Date of Patent: January 16, 1996
    Assignee: Texaco Inc.
    Inventor: Sheldon Herbstman
  • Patent number: 5393914
    Abstract: The present invention provides a novel class of compounds, useful as gasoline detergent additives, comprising hydrocarbyloxypolyether allophonate esters of 2-hydroxy ethane. The present invention also provides a motor fuel composition containing the novel allophonate esters and further provides a method of synthesizing the allophonate esters of the present invention.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: February 28, 1995
    Assignee: Texaco Inc.
    Inventors: Sheldon Herbstman, Cadorette, Constance A.
  • Patent number: 5383942
    Abstract: An amido alkanolamine composition obtained by reacting, at a temperature of 10.degree. C.-200.degree. C.:(a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms; and(b) a hydrocarbyl oxypolyoxyalkylene amine represented by the formula ##STR2## in which R' represents an alkyl, an alicyclic or an alkyl-alicyclic radical having from 12 to 30 carbon atoms or ##STR3## wherein R" represents a hydrocarbyl radical having from 4 to 30 carbon atoms, x has a value of from about 5 to 50, and R'" is an ethyl radical or a mixture of methyl and ethyl radicals.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: January 24, 1995
    Assignee: Texaco Inc.
    Inventors: Wei-Yang Su, Sheldon Herbstman, Joseph M. Russo, Robert L. Zimmerman, Michael Cuscurida
  • Patent number: 5332407
    Abstract: A diesel fuel composition comprising a major portion of a middle distillate fuel oil and a minor portion, effective to clean deposits from diesel fuel injectors, of a diesel fuel detergent comprising the reaction product of:(a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and(b) an alkylphenoxypolyoxyalkylene amine represented by the formula: ##STR2## in which R' represents a hydrocarbyl radical having from 4 to 30 carbon atoms, x has a value from 5 to 50, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals.A method of cleaning diesel fuel injectors is also provided.
    Type: Grant
    Filed: October 19, 1992
    Date of Patent: July 26, 1994
    Assignee: Texaco Inc.
    Inventor: Sheldon Herbstman
  • Patent number: 5286264
    Abstract: A gasoline detergent additive composition comprising a) the reaction product of a 4-alkyl-2-morpholinone and an alkylphenoxypolyoxyalkylene amine; b) the reaction product of a polyalkenyl succinic acid anhydride and a polyethylene polyamine; and c) a polyalphaolefin. A motor fuel composition is also provided.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: February 15, 1994
    Assignee: Texaco Inc.
    Inventors: Joseph M. Russo, Sheldon Herbstman, Jefrey B. Furman
  • Patent number: 5286266
    Abstract: The present invention provides a novel class of compounds, useful as gasoline detergent additives, comprising asymmetrical ureas of either a hydrocarbyloxypolyether amine alone, or a hydrocarbyloxypolyether amine and a tertiary aminoalkyl primary amine. The present invention also provides a motor fuel composition containing the novel asymmetrical ureas and further provides a method of synthesizing the asymmetrical ureas of the present invention.
    Type: Grant
    Filed: July 9, 1992
    Date of Patent: February 15, 1994
    Assignee: Texaco Inc.
    Inventor: Sheldon Herbstman
  • Patent number: 5286267
    Abstract: The present invention provides a novel class of compounds, useful as gasoline detergent additives, which is a polyether hydroxyethylaminoethyl oxalamide represented by the formula ##STR1## where R is a (C.sub.5 -C.sub.25) alkyl group and n is an integer between about 5 and about 20.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: February 15, 1994
    Assignee: Texaco Inc.
    Inventors: Wei-Yang Su, Sheldon Herbstman, Robert L. Zimmerman, Michael Cuscurida
  • Patent number: 5256165
    Abstract: A multi-functional motor fuel additive comprising (a) a mono-polyalkenylsuccinimide, (b) a bis-polyalkenylsuccinimide and (c) a heavy oil is provided. A motor fuel composition comprising a major portion of a base fuel and a minor portion, sufficient to provide port fuel injector and intake valve detergency, of the multi-functional motor fuel additive of the present invention and a concentrate of the multi-functional motor fuel additive of the present invention are also provided.
    Type: Grant
    Filed: January 6, 1992
    Date of Patent: October 26, 1993
    Assignee: Texaco Inc
    Inventors: Sheldon Herbstman, Benjamin J. Kaufman, William H. Bitting, Peter J. Choate
  • Patent number: 5234478
    Abstract: An amido alkanolamine composition obtained by reacting, at a temperature of 10.degree. C.-200.degree. C.:(a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and(b) an alkylphenoxypolyoxyalkylene amine represented by the formula: ##STR2## in which R' represents a hydrocarbyl radical having from 4 to 30 carbon atoms, x has a value from 5 to 50, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals is provided.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: August 10, 1993
    Assignees: Texaco Inc., Texaco Chemical Co.
    Inventors: Wei-Yang Su, Sheldon Herbstman, Robert L. Zimmerman, Michael Cuscurida, Wheeler C. Crawford, Daniel T. Daly
  • Patent number: 5203879
    Abstract: An amido alkanolamine composition obtained by reacting, at a temperature of 10.degree. C.-200.degree. C.:(a) a 4-alkyl-2-morpholinone represented by the formula: ##STR1## in which R represents a monovalent aliphatic radical having from 1 to 10 carbon atoms, and(b) a hydrocarbyl oxypolyoxyalkylene amine represented by the formula: ##STR2## in which R' represents an alkyl, an alicyclic, or a alkylalicyclic radical having from 8 to 30 carbon atoms, x has a value from 5 to 50, and R" represents a methyl radical or a mixture of hydrogen and methyl radicals is provided.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: April 20, 1993
    Assignee: Texaco Inc.
    Inventors: Wei-Yang Su, Sheldon Herbstman, Joseph M. Russo, Robert L. Zimmerman, Michael Cuscurida
  • Patent number: 5169546
    Abstract: An additive, a lubricating oil composition which incorporates the additive, and a concentrate for a lubricating oil are disclosed. The additive includes (a) a halogenated copolymer prepared from ethylene, a C.sub.3 to C.sub.18 alpha-olefin, preferably a C.sub.3 to C.sub.8, or mixtures thereof, and at least one halogen, and (b) an amino-aromatic polyamine compound. Most preferably, the copolymer is prepared from ethylene, propylene and at least one polyene.The lubricating oil composition comprises a major amount of an oil of lubricating viscosity and a minor amount, effective to impart viscosity index improvement, dispersancy and antioxidant properties to the oil, of the prescribed additive.The concentrate comprises a diluent oil of lubricating oil viscosity and from about 1 to about 50 weight percent of the prescribed additive based on the total weight of the concentrate.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: December 8, 1992
    Assignee: Texaco Inc.
    Inventors: Theodore E. Nalesnik, Sheldon Herbstman
  • Patent number: 5122161
    Abstract: 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: Grant
    Filed: December 31, 1990
    Date of Patent: June 16, 1992
    Assignee: Texaco Inc.
    Inventors: Nicholas Benfaremo, Kashmir S. Virk, Sheldon Herbstman
  • Patent number: 5057123
    Abstract: A method of stabilizing a diesel fuel formulation by substantially minimizing the oxidation thereof is disclosed. In particular, at least one amine containing copolymer is incorporated into the diesel fuel formulation in an amount sufficient to improve the storage stability and, also, substantially minimize the oxidation thereof. The method of this invention is particularly well suited for substantially minimizing the high temperature oxidation of diesel fuels.
    Type: Grant
    Filed: May 25, 1990
    Date of Patent: October 15, 1991
    Assignee: Texaco Inc.
    Inventors: Sheldon Herbstman, Theodore E. Nalesnik
  • Patent number: 5039307
    Abstract: 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: Grant
    Filed: October 1, 1990
    Date of Patent: August 13, 1991
    Assignee: Texaco Inc.
    Inventors: Sheldon Herbstman, Kashmir S. Virk, Theodore E. Nalesnik, Nicholas Benfaremo
  • Patent number: 5030249
    Abstract: 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: Grant
    Filed: October 1, 1990
    Date of Patent: July 9, 1991
    Assignee: Texaco Inc.
    Inventors: Sheldon Herbstman, Thomas E. Hayden, Theodore E. Nalesnik, Nicholas Benfaremo
  • Patent number: 5000759
    Abstract: A stable middle distillate fuel-oil composition which comprises(a) a major portion of a middle distillate fuel-oil; and(b) a minor amount, as storage stabilizing additive, of a N-2-pyridyl succinimide of a copolymer and maleic anhydride graft.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: March 19, 1991
    Assignee: Texaco Inc.
    Inventors: Theodore E. Nalesnik, Sheldon Herbstman
  • Patent number: 4997455
    Abstract: A diesel fuel and injector cleaning additive which comprises a solvent such as a (C.sub.3 -C.sub.5) alcohol and an amino alkylene-substituted asparagine.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: March 5, 1991
    Assignee: Texaco Inc.
    Inventors: Sheldon Herbstman, Kashmir S. Virk