Patents Represented by Attorney Stanley M. Tarter
  • Patent number: 5035720
    Abstract: A composition adapted for use as a corrosion inhibitor in petroleum-based fuel. The composition comprises an oil-soluble adduct of a triazole and a basic nitrogen compound selected from the group consisting of polyamines, alkoxyamines, aryloxyamines and monoalkyleneamines. Methods for preparation and use of such compositions are also disclosed. In addition, a petroleum-based fuel composition of reduced tendency to corrode copper and aluminum surfaces contacted by the fuel composition is disclosed. The composition comprises a petroleum-based fuel and an oil-soluble adduct of a triazole and a basic nitrogen compound.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: July 30, 1991
    Assignee: Petrolite Corporation
    Inventor: Jerry J. Weers
  • Patent number: 5034161
    Abstract: A method for preparation of aryl-substituted aliphatic hydrocarbons is disclosed. The method comprises reacting in the presence of a solid superacid resin catalyst an unsaturated aliphatic hydrocarbon in liquid form with an aromatic hydrocarbon that is susceptible to Friedel-Crafts reaction. The reaction between the liquid unsaturated aliphatic hydrocarbon and the aromatic hydrocarbon produces a reaction product comprising an aryl-substituted aliphatic hydrocarbon.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: July 23, 1991
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. O. Alink
  • Patent number: 5026918
    Abstract: 2,3,5-trisubstituted-2-cyclopentenones or 2,3-disubstituted-2-cyclopentenones (such as cis-jasmone) are prepared by contacting a 3-chloro-3,4-disubstituted-4-pentene-2-one with a strong base. Methods of preparing the reactants are also disclosed.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: June 25, 1991
    Assignee: Petrolite Corporation
    Inventor: Jacob Mathew
  • Patent number: 5026483
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: June 25, 1991
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Patent number: 5019274
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: May 28, 1991
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Patent number: 5019153
    Abstract: Disclosed are pyridine herbicides characterized by substitution with a fluorine-containing methyl group at the 2- or 6-position, a carboxylic acid-derived group at the 3-position, and a halogen or a substituted nitrogen-containing group at the 5-position.
    Type: Grant
    Filed: December 1, 1989
    Date of Patent: May 28, 1991
    Assignee: Monsanto Company
    Inventors: Len F. Lee, Mark G. Dolson
  • Patent number: 5013451
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: May 7, 1991
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Patent number: 5013452
    Abstract: A method for resolving emulsions produced in preparation of pharmaceuticals by fermentation and in other such bioprocesses is disclosed. The method comprises adding an effective amount of a demulsifier to an emulsion containing fermentation product that includes a pharmaceutical which is desired to be extracted from the emulsion.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: May 7, 1991
    Assignee: Petrolite Corporation
    Inventors: Thomas J. Bellos, Richard D. Keating
  • Patent number: 5008144
    Abstract: An overprint aqueous varnish has improved properties by having incorporated therein a small amount of an aqueous mixture of a finely divided hydrocarbon and certain high molecular weight oxyalkylated primary alcohols.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: April 16, 1991
    Assignee: Petrolite Corporation
    Inventors: Timothy J. Baker, John H. Woods
  • Patent number: 4987266
    Abstract: A process is provided for producing nitrophenetole where nitrochlorobenzene is reacted in a cosolvent of a monohydric alcohol and N-alkylpyrrolidone with aqueous alkali metal hydroxide.
    Type: Grant
    Filed: December 29, 1989
    Date of Patent: January 22, 1991
    Assignee: Monsanto Company
    Inventors: Richard J. Day, Harry B. Harlow, Dennis C. Owsley
  • Patent number: 4983510
    Abstract: Enzymes such as L-methionine gamma lyase, L-lysine decarboxylase, L-aspartase and L-tryptophanase are immobilized by contacting with a latex of polymer particles having a negative surface charge such that the electrophoretic mobility of the latex has a negative value of -2.0 10.sup.-8 m.sup.2 V.sup.-1 sec.sup.-1 or below when measured at pH 7 in 0.01M KNO.sub.3 and a polymer solids concentration of 30 mg/l. The polymer particles also have a hydrophobic surface such that the contact angle of a 1 microliter droplet of distilled water with a plane horizontal surface formed by drying and compacting the latex particles is 70.degree. or more. The resultant-enzyme/polymer particles can be used for assaying amino acids corresponding to the specific enzyme immobilized in aqueous solutions using an electrosensor comprising a pH-sensitive electrode located in a sensing zone or chamber containing the enzyme/polymer particles as an aqueous dispersion or in water-dispersible form.
    Type: Grant
    Filed: October 26, 1988
    Date of Patent: January 8, 1991
    Assignee: Monsanto Company
    Inventors: Pierre F. Lardinois, Paul G. Rouxhet, William E. E. Stone, Kenneth M. Baker, Alain E. Baudichau
  • Patent number: 4981609
    Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: January 1, 1991
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Patent number: 4978366
    Abstract: A distillate fuel, particularly one which has a high acid number initially or which develops a high acid number as a result of fuel degradation, stabilized with a diaminomethane of the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be independently a saturated or unsaturated hydrocarbon group, e.g., alkyl, aryl, aralkyl, alkaryl, cycloalkyl, alkenyl, aralkenyl, alkenylaryl, cycloalkenyl and the like or heterocyclyl groups and in which R.sub.1 and R.sub.2 and/or R.sub.3 and R.sub.4 may be joined together to form a five or six member heterocyclyl ring and R.sub.5 may be hydrogen or lower alkyl is disclosed. A method of stabilizing a fuel oil wherein a stabilizing amount of the above-mentioned diaminomethane is incorporated into the fuel oil is also disclosed.
    Type: Grant
    Filed: January 14, 1988
    Date of Patent: December 18, 1990
    Assignee: Petrolite Corporation
    Inventor: Jerry J. Weers
  • Patent number: 4964895
    Abstract: The present invention relates to certain novel substituted 3-(4-nitrophenoxy)pyrazoles and their use as herbicides.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: October 23, 1990
    Assignee: Monsanto Company
    Inventors: Kurt Moedritzer, Michael D. Rogers
  • Patent number: 4964896
    Abstract: This invention relates to compounds of the formula: ##STR1## wherein R.sub.1 is an optionally substituted alkyl or alkenyl group; at least one of R.sub.2, R.sub.5 and R.sub.6 is ##STR2## wherein (1) when R.sub.2 is ##STR3## R.sub.5 is a hydrogen atom, an alkyl group or a halogen atom and R.sub.6 is a hydrogen atom or an alkyl group,(2) when R.sub.5 is ##STR4## R.sub.2 is an alkyl group and R.sub.6 is a hydrogen atom or an alkyl group,(3) when R.sub.6 is ##STR5## R.sub.2 is an optionally substituted (C.sub.1 -C.sub.6) alkyl or a (C.sub.3 -C.sub.6) alkenyl group and R.sub.5 is a hydrogen atom, a (C.sub.1 -C.sub.6) alkyl group or a halogen atom, and(4) when R.sub.2 and R.sub.6 are both independently ##STR6## R.sub.5 is hydrogen atom or an alkyl group; Y is a hydrogen atom or an alkyl group; X is a hydrogen atom, a halogen atom, a trihalomethyl group and the like; and n is an integer from 1 to 3; or the agronomically acceptable alkali metal or acid addition salts thereof.
    Type: Grant
    Filed: August 15, 1988
    Date of Patent: October 23, 1990
    Assignee: Monsanto Company
    Inventor: Glenn R. Carlson
  • Patent number: 4962199
    Abstract: The present invention relates to a process for making substituted 4-oxo-1,4-dihydropyridazines by reacting a 2-phenylhyrazono-3-oxoglutarate with an organic acid halide in the presence of magnesium halide.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: October 9, 1990
    Assignee: Monsanto Company
    Inventor: Gopi Yalamanchili
  • Patent number: 4956099
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: September 11, 1990
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Patent number: 4948902
    Abstract: The present invention relates to a novel process for making N-alkyl-3-hydroxypyrazoles.
    Type: Grant
    Filed: April 13, 1988
    Date of Patent: August 14, 1990
    Assignee: Monsanto Company
    Inventors: Bruce J. Gaede, Lisa L. Torrence
  • Patent number: 4941994
    Abstract: Corrosion of metal surfaces in contact with a hot hydrocarbon stock containing an appreciable amount of naphthenic acid is inhibited by the presence in the hydrocarbon stock of an effective corrosion inhibiting amount of a dialkyl or trialkyl phosphite, alone or together with a thiazoline.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: July 17, 1990
    Assignee: Petrolite Corporation
    Inventors: Michael J. Zetlmeisl, Benjamin T. Outlaw
  • Patent number: 4925497
    Abstract: Paraffin deposits on oilfield equipment, pipelines, tanks and the like are removed on contact with a solvent composition comprising a substantially pure aromatic hydrocarbon and an aliphatic and/or alicyclic hydrocarbon. The solvent composition may contain a surfactant.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: May 15, 1990
    Assignee: Petrolite Corporation
    Inventor: Charles L. Thierheimer, Jr.