Patents Assigned to Petrolite Corporation
  • Patent number: 5785895
    Abstract: A method for inhibiting corrosion in an aqueous medium is disclosed. The method comprises incorporating into the medium an amount of a water-soluble corrosion inhibitor sufficient to inhibit corrosion. The corrosion inhibitor comprises an N-ethoxy, 2-substituted imidazoline, the N-ethoxy substituent having from one to about thirty ethoxy units and the 2-substituent being an unsaturated or polyunsaturated fatty chain of from about six to about thirty carbons. If the medium is sweet, the inhibitor further comprises a phosphate ester derived from a water-soluble oxyethylated, straight chain alcohol of from about two to about thirty carbons. Corrosion inhibitor compositions useful in such method are also disclosed.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: July 28, 1998
    Assignee: Petrolite Corporation
    Inventors: Richard L. Martin, Jo Ann McMahon, Bernardus A. Oude Alink
  • Patent number: 5672183
    Abstract: A composition having increased electrical conductivity, comprising a liquid hydrocarbon and an anti-static amount of a hydrocarbon soluble copolymer of an alkylvinyl monomer and a cationic vinyl monomer. The copolymer has an alkylvinyl monomer unit to cationic vinyl monomer unit ratio of from about 1:1 to about 10:1, and has an average molecular weight of from about 800 to about 1,000,000. Other related compositions and methods for measuring electrical conductivity of liquids are also disclosed.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: September 30, 1997
    Assignee: Petrolite Corporation
    Inventor: John A. Schield
  • Patent number: 5637223
    Abstract: Oil well production fluid composed of oil and water and containing in excess of 100 ppm water soluble petroleum carboxylates in anionic form dissolved in the water is treated by acidifying the fluid to a pH of 6.0 or lower with a combination of a strong organic acid and a strong mineral acid and then is intimately mixed. The oil and water are separated one from the other. The content of the water soluble organics in the water is thereby substantially transferred to the oil phase. In a second aspect of the invention, water used to extract corrosive compounds to render the oil suitable for fueling gas turbine power plants is acidified to a pH of 6.0 or lower and is thereafter intimately mixed with fuel oil.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: June 10, 1997
    Assignee: Petrolite Corporation
    Inventors: Thomas J. Bellos, Gregory P. Noelken
  • Patent number: 5634971
    Abstract: A process of dispersing a pigment consists of agitating a pigment in water with a polyoxyalkylated ether dispersant. The polyoxyalkylated ether comprises Units of the formulae A and B whereinUnit A is an alkyl group of the formula: ##STR1## and; Unit B is an oxyalkylate of the formula:(OCH.sub.2 CHR.sub.2).sub.y OR.sub.3 (IB)wherein R and R.sub.1 individually represent hydrogen or a C.sub.1 -C.sub.10 alkyl group; R.sub.2 is --H or a C.sub.1 -C.sub.5 alkyl group; x represents a number from about 9 to about 75; R.sub.3 is --H or a C.sub.1 -C.sub.5 alkyl group; and y is between about 1 to about 475.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: June 3, 1997
    Assignee: Petrolite Corporation
    Inventor: Timothy J. Baker
  • Patent number: 5582792
    Abstract: A method for inhibiting corrosion of a metal surface bearing a corrosion product including ferrous ions is disclosed. The method comprises applying to the surface a salt of an ethoxylated amine and a reaction product of an alcohol and a fatty acid maleic anhydride adduct produced by a reaction between maleic anhydride and an unsaturated fatty acid. Related compositions are also disclosed.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: December 10, 1996
    Assignee: Petrolite Corporation
    Inventors: James A. Dougherty, Benjie T. Outlaw, Bernardus A. Oude Alink
  • Patent number: 5567212
    Abstract: A method for scavenging sulfur species from a petroleum-derived medium is disclosed. The method comprises contacting the medium with sulfur species scavenging amount of an imine of the formula ##STR1## wherein x is an integer from 1 to 10, R' is an organic moiety having a number of valences equal to x, R.sub.1 is hydrogen or a mono-valent organic moieties and R is a mono-valent olefin moiety, provided that R and R.sub.1 contain a total of from about four to about forty carbon atoms. In an alternative embodiment, the imine is produced by a condensation reaction between an amine having at least one primary amino group and a carbonyl of the formula ##STR2## wherein R.sub.1 is hydrogen or a mono-valent organic moieties and R is a mono-valent olefin moiety, provided that R and R.sub.1 contain a total of from about four to about forty carbon atoms.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: October 22, 1996
    Assignee: Petrolite Corporation
    Inventors: David R. Gentry, Gerald T. Pancio, Jerry J. Weers
  • Patent number: 5567213
    Abstract: A method for scavenging sulfur species from a petroleum-derived medium is disclosed. The method comprises contacting the medium with sulfur species scavenging amount of an imine of the formula ##STR1## wherein x is an integer from 1 to 10, R' is an organic moiety having a number of valences equal to x, R.sub.1 is hydrogen or a mono-valent organic moieties and R is a mono-valent olefin moiety, provided that R and R.sub.1 contain a total of from about four to about forty carbon atoms. In an alternative embodiment, the imine is produced by a condensation reactionic between an amine having at least one primary amino group and a carbonyl of the formula ##STR2## wherein R.sub.1 is hydrogen or a mono-valent organic moieties and R is a mono-valent olefin moiety, provided that R and R.sub.1 contain a total of from about four to about forty carbon atoms.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: October 22, 1996
    Assignee: Petrolite Corporation
    Inventors: David R. Gentry, Gerald T. Pancio, Jerry J. Weers
  • Patent number: 5538723
    Abstract: A method for suppressing the viscosity of a calcium exotoxin slurry is disclosed. The method comprises adding to the slurry a viscosity-suppressing amount of a copolymer of a vinyl-based monomer and 2-acrylamide-2-methylpropane sulfonic acid or its sodium salt. The copolymer has a weight average molecular weight of from about 1,000 to about 10,000. A slurry comprising calcium exotoxin and about 0.25 to about 2.5 percent by weight of such copolymer is also disclosed.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: July 23, 1996
    Assignee: Petrolite Corporation
    Inventors: Kevin J. McCarthy, Charles W. Burkhardt, Steven P. Holmes, David J. Poelker
  • Patent number: 5504063
    Abstract: An asphaltene removal composition comprising an alkyleneamine-fatty acid condensation reaction product and one or more polar aprotic high dielectric constant solvents is useful for removing and inhibiting asphaltene deposits from wells, pipelines and associated equipment.
    Type: Grant
    Filed: July 11, 1994
    Date of Patent: April 2, 1996
    Assignee: Petrolite Corporation
    Inventors: Harold L. Becker, Bernhard W. Wolf
  • Patent number: 5480860
    Abstract: Methods are provided for selectively reducing the levels of hydrogen sulfide and organic sulfides in sewage gas to reduce or remove the odor, toxicity and corrosivity associated therewith, comprising contacting said sewage gas with a composition comprising a trisubstituted hexahydro-s-triazine.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: January 2, 1996
    Assignee: Petrolite Corporation
    Inventor: Edward T. Dillon
  • Patent number: 5456767
    Abstract: A method for inhibiting corrosion of a metal surface in a liquid medium is described. The method comprises incorporating into the medium a corrosion inhibiting amount of a combination of a surfactant that forms a bilayer on the metal surface in the fluid and a corrosion inhibitor that solubilizes in the medium in the presence of the surfactant. The amount of surfactant is sufficient to produce a bilayer on the metal surface in the medium. The combination isa. an anionic surfactant that forms a bilayer on the metal surface and a cationic corrosion inhibitor;b. a cationic surfactant that forms a bilayer on the metal surface and an anionic corrosion inhibitor;c. an ionic surfactant that forms a bilayer on the metal surface and an ionic corrosion inhibitor having a pendent, generally straight chain hydrocarbon or substituted hydrocarbon moiety of from about 10 to about 18 carbon atoms; ord. an ionic surfactant that forms a bilayer on the metal surface and a non-ionic corrosion inhibitor.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: October 10, 1995
    Assignee: Petrolite Corporation
    Inventors: Sayed S. Shah, Thomas G. Braga, Bernardus A. Oude Alink, Jacob Mathew
  • Patent number: 5441998
    Abstract: A composition is provided which, when added to an elastomer or tackifier, renders a repulpable hot melt adhesive. The compositions consists of an alkoxylated alcohol of the formulaA-B (I)wherein A is the unit ##STR1## and B is the unit ##STR2## and further wherein R and R.sub.1 are independently selected from the group consisting of hydrogen and a C.sub.1 -C.sub.10 alkyl group; R.sub.2 is hydrogen or a C.sub.1 -C.sub.5 alkyl group; x is between about 1 to about 142; and y is between about 2 to about 817, provided the weight ratio of B/A+B is between 51 and 90 percent. Such adhesive compositions may further contain wax or a primary linear polymeric alcohol. When combined with an elastomer and tackifier, such adhesives are repulpable and thus have particular applicability when used in combination with recyclable paper.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: August 15, 1995
    Assignee: Petrolite Corporation
    Inventors: Susan M. Teeters, Charles H. Heroux, Michael D. Watson, William P. Cottom, Terrance D. Duryee
  • Patent number: 5439592
    Abstract: A method for removal of water soluble organics from acidified oil process water is disclosed. The method comprises a step in which free oil is removed from such water by water-wet ultrafiltration to produce a water-rich filtrate stream which is then directed through a reverse osmosis membrane to produce a WSO-depleted stream and a WSO-rich reject stream. The method includes a recycle stream.
    Type: Grant
    Filed: September 1, 1994
    Date of Patent: August 8, 1995
    Assignee: Petrolite Corporation
    Inventors: Thomas J. Bellos, Richard D. Keating
  • Patent number: 5440059
    Abstract: A novel method for preparing an aryl-substituted fatty acid or fatty ester is disclosed. According to the method, an olefinic composition selected from among mono-unsaturated fatty acids, mono-unsaturated fatty esters and mixtures thereof is introduced to a reaction zone comprising a liquid aromatic hydrocarbon and a catalytic amount of a clay catalyst to produce a reaction that is allowed to proceed for a time and at a temperature sufficient to produce a reaction product comprising a desired yield of aryl-substituted fatty acid or fatty ester. Preferably, the introduction of the olefinic composition is conducted slowly, such as over a period of one to four, more preferably, two to four, hours. Related methods and compositions, including xylylstearic acid, are also disclosed.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: August 8, 1995
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. O. Alink
  • Patent number: 5436287
    Abstract: The present invention relates to a repulpable laminating adhesive which contains an elastomer, tackifier and a 5:95 to 100:0 by weight blend comprising a high molecular weight oxygen-containing polymer and a wax.The oxygen-containing polymer is preferably of the formulaA-B (I)wherein A is represented by a unit of the formula ##STR1## and B is represented by a unit of the formula ##STR2## and further wherein R and R.sub.1 are independently selected from the group consisting of hydrogen and a C.sub.1 -C.sub.10 alkyl group; R.sub.2 is hydrogen or a C.sub.1 -C.sub.5 alkyl group; x is greater than or equal to 1 but less than 70; and y is between about 0 to about 45; provided the weight percent of B/A+B is between 0 and 50 percent and the molecular weight of the A unit is less than 2,000.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: July 25, 1995
    Assignee: Petrolite Corporation
    Inventors: Michael D. Watson, William P. Cottom, Susan M. Teeters, Charles H. Heroux, Terrance D. Duryee
  • Patent number: 5414039
    Abstract: A composition is which, when added to an ethylene vinyl acetate copolymer having 40 to 60 weight percent of vinyl acetate units, renders a repulpable hot melt adhesive comprises a tackifier and an oxygen-containing polymer. The oxygen-containing polymer may be either (i) a high molecular weight carboxylic acid; (ii) a ethylenically unsaturated cyclic anhydride graft polyolefin or (iii) a primary linear polymeric alcohol of the formulaA-Bwherein A is represented by a unit of the formula ##STR1## and B is represented by a unit of the formula ##STR2## where R and R.sub.1 are independently selected from the group consisting of hydrogen and a C.sub.1 -C.sub.10 alkyl group; R.sub.2 is hydrogen or a C.sub.1 -C.sub.5 alkyl group; x is greater than or equal to 1 but less than 70; and y is between 0 about 45; provided the weight ratio of B/A+B is between 0 and 50 percent. The molecular weight of the alkyl unit of the oxygen-containing polymer is less than 2,000.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: May 9, 1995
    Assignee: Petrolite Corporation
    Inventors: Michael D. Watson, William P. Cottom, Susan M. Teeters, Charles H. Heroux, Terrance D. Duryee
  • Patent number: 5391601
    Abstract: The present invention relates to a blend of a linear or branched chain saturated aliphatic hydrocarbon wax having a molecular weight of between about 300 to about 5,000 and an alkoxylated alcohol of the formula A--B, wherein A is the unit: CH.sub.3 (CHR--CHR.sub.1).sub.x -- and B is the unit: --CH.sub.2 O(CH.sub.2 CHR.sub.2 O).sub.y H. R and R.sup.1 are independently selected from the group consisting of hydrogen and a C.sub.1 -C.sub.10 alkyl group; R.sub.2 is hydrogen or a C.sub.1 -C.sub.5 alkyl group; x is between about 1 to about 142; and y is between about 2 to about 817, provided the weight ratio of B/A+B is between 51 and 90 percent. Such blends may be used with an elastomer and tackifier to form a repulpable laminating adhesive. The invention further relates to a laminating adhesive containing alkoxylated alcohol, elastomer, wax and tackifier.
    Type: Grant
    Filed: February 16, 1993
    Date of Patent: February 21, 1995
    Assignee: Petrolite Corporation
    Inventors: Susan M. Teeters, Charles H. Heroux, Michael D. Watson, William P. Cottom, Terrance D. Duryee
  • Patent number: 5385616
    Abstract: A method for inhibiting corrosion of a metal surface bearing a corrosion product including ferrous ions is disclosed. The method comprises applying to the surface a reaction product of an alcohol and a fatty acid maleic anhydride adduct produced by a reaction between maleic anhydride and an unsaturated fatty acid. Related compositions and coated metal surfaces are also disclosed.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: January 31, 1995
    Assignee: Petrolite Corporation
    Inventors: James A. Dougherty, George W. Dear, Bernardus A. Oude
  • Patent number: 5380466
    Abstract: A method for inhibiting corrosion of metal surfaces in an aqueous medium, comprising incorporating into the medium a corrosion inhibitor in an amount sufficient to inhibit corrosion, the corrosion inhibitor comprising a water-soluble agent selected from the group consisting of compositions of the formula ##STR1## compositions of the formula and mixtures thereof, wherein R is R.sup.2 --(OCH.sub.2 CH.sub.2).sub.x --wherein R.sup.2 is a substituted or unsubstituted alkyl, aryl, or aralkyl group of from about five to about fifteen carbon atoms, each carbon atom having at least one hydrogen and x is an integer of from about one to about ten, and R'N is a basic nitrogen compound that is at least water-dispersible.
    Type: Grant
    Filed: April 15, 1993
    Date of Patent: January 10, 1995
    Assignee: Petrolite Corporation
    Inventor: Richard L. Martin
  • Patent number: 5376170
    Abstract: An aqueous dispersion is provided which comprises water, a dispersant and a linear or branched chain saturated aliphatic hydrocarbon. The dispersant is of the general formula ##STR1## wherein R and R.sub.1 are independently selected from the group consisting of hydrogen and C.sub.1 -C.sub.10 alkyl; R.sub.2 is selected from the group consisting of hydrogen and a C.sub.1 -C.sub.5 alkyl group; x is about 8 to about 112 and y is about 1 to about 1,370. The aliphatic hydrocarbon is either linear or branched chain and has a molecular weight of from about 300 to about 5,000. Such dispersions have particular applicability in water based inks and overprint varnishes.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: December 27, 1994
    Assignee: Petrolite Corporation
    Inventor: Timothy J. Baker