Patents Assigned to Petrolite Corporation
  • 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: 4983186
    Abstract: A method for reducing friction loss in flowing hydrocarbon fluids is disclosed. The method comprises adding to the fluid an effective amount of an oil-soluble polyamine and a terpolymer of styrene, alkyl acrylate and a carboxylic acid selected from the group consisting of acrylic acid and methacrylic acid. Related compositions are also disclosed.
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: January 8, 1991
    Assignee: Petrolite Corporation
    Inventors: Michael I. Naiman, James C. Chang
  • 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: 4973710
    Abstract: Water-soluble 1,2-dithiole-3-thione derivatives are prepared by reacting a polyoxyalkylated starting material with sulfur. These derivatives are useful as corrosion inhibitors, particularly in aqueous environments.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: November 27, 1990
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • 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: 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: 4931189
    Abstract: A method for preparation of an aminomethylene phosphonate useful as a scale inhibitor in high brine environments. The method comprises phosphonomethylating an amine of the formula ##STR1## wherein x is an integer from 1 to 6 and the Z's are selected from the group consisting of hydrogen and --CH.sub.3, to produce an aminomethylene phosphonate of the formula ##STR2## wherein x and the Z's are defined as above and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are indepenedently selected from the group consisting of hydrogen and --CH.sub.2 PO.sub.3 H.sub.2, such that at least about 80% of the R.sup.1, R.sup.2, R.sup.3 and R.sup.4 in a mixture of the aminomethylene phosphonate is --CH.sub.2 PO.sub.3 H.sub.2. Related methods and compositions are also disclosed.
    Type: Grant
    Filed: June 15, 1989
    Date of Patent: June 5, 1990
    Assignee: Petrolite Corporation
    Inventors: Balram Dhawan, Derek Redmore, John L. Przybylinski
  • 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.
  • Patent number: 4920141
    Abstract: A mixture of bactericides of nitroimidazoles, particularly 1,2-dimethyl-5-nitro-1H-imidazole, or salts thereof and aldehydes, particularly glutaraldehyde and formaldehyde, has been found to exhibit synergistic results in inhibiting the growth of sulfate-reducing bacteria.
    Type: Grant
    Filed: February 24, 1988
    Date of Patent: April 24, 1990
    Assignee: Petrolite Corporation
    Inventors: Dennis G. Horstmann, Douglas S. Jones
  • Patent number: 4918959
    Abstract: The formation of mill scale contaminated with an appreciable amount of oily substances is prevented by spraying rolled steel with an aqueous stream under high pressure containing an effective amount of a surfactant.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: April 24, 1990
    Assignee: Petrolite Corporation
    Inventors: Dennis P. Parazak, Charles W. Burkhardt, Rainer Langwald
  • Patent number: 4908063
    Abstract: An aqueous dispersion useful in formulating water-based printing inks is provided. The dispersion contains water, an alkoxylated primary linear polymeric alcohol dispersant and a finely divided mostly linear aliphatic hydrocarbon having a molecular weight of about 300-3,000 and/or a finely divided chemically modified mostly linear aliphatic hydrocarbon having a molecular weight of about 300-3,000.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: March 13, 1990
    Assignee: Petrolite Corporation
    Inventors: Timothy J. Baker, John H. Woods, Jeffrey R. Zerr
  • Patent number: 4900427
    Abstract: Fouling of heat exchangers in chemical processing or oil refining systems is inhibited by incorporating into a petroleum derived stock an effective antifouling amount of a mixture of(a) a condensation product of an alkylphenol, an aldehyde, and an amine; and(b) a diaminomethane.
    Type: Grant
    Filed: July 21, 1989
    Date of Patent: February 13, 1990
    Assignee: Petrolite Corporation
    Inventors: Jerry J. Weers, Thomas J. Falkler, George G. Duggan, Robert J. Garrecht
  • Patent number: 4898751
    Abstract: This invention relates to methods and compositions of matter for inhibiting and/or preventing the formulation of adhesion of materials such as coal, coke, mineral ores, taconite, glass and others to the container (railcars, silo, hopper bins, etc.) walls due to freezing temperatures in winter and/or excessive moistures during the rest of the year.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: February 6, 1990
    Assignee: Petrolite Corporation
    Inventor: Shailesh G. Dwivedy
  • Patent number: 4877578
    Abstract: Water soluble corrosion inhibitors which exhibit low hydrocarbon carryunder are prepared by reaction of alkylenepolyamines and formaldehyde.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: October 31, 1989
    Assignee: Petrolite Corporation
    Inventors: Michael J. Zetlmeisl, William F. Fahey
  • Patent number: 4877842
    Abstract: A composition comprising the reaction product resulting from subjecting to grafting and esterification reaction conditions a mixture comprising a polyoxyalkylene amine and a vinyl monomer. The mixture is substantially free of copolymers derived from a polyoxyalkylene glycol and a diglycidyl ether, and the reaction product is partially cross-linked. Methods of use and preparation of such compositions are also disclosed.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: October 31, 1989
    Assignee: Petrolite Corporation
    Inventors: Rudolf S. Buriks, James G. Dolan
  • Patent number: 4871374
    Abstract: A fuel oil stabilized with an imine-enamine condensate which is the reaction product of an aldehyde having at least two carbon atoms and/or a ketone and a polyamine of the formula: ##STR1## wherein n is 0 or an integer from 1 to 6, M is a carbon or nitrogen atom and R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently hydrogen, a saturated or unsaturated hydrocarbon group, e.g., alkyl, aryl, aralky, alkaryl, cycloalkyl, alkenyl, aralkenyl, alkenylaryl, cycloalkenyl and the like or heterocyclyl groups. A method of stabilizing a fuel oil wherein a stabilizing amount of the above mentioned imine-enamine condensate is incorporated into the fuel oil.
    Type: Grant
    Filed: January 14, 1988
    Date of Patent: October 3, 1989
    Assignee: Petrolite Corporation
    Inventor: Jerry J. Weers
  • Patent number: 4864075
    Abstract: Nitrogen-containing dithiocarbamic acids 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 20, 1988
    Date of Patent: September 5, 1989
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Patent number: 4857205
    Abstract: A method for inhibition of scale formation using a composition comprising an N-phosphonomethylated amino-2-hydroxypropylene polymer having a molecular weight of between about 300 and about 5000 and having the structural formula ##STR1## wherein (i) R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, phosphonomethyl radical corresponding to the formula --CH.sub.2 PO(OH).sub.2, and water treating acceptable salts of such phosphonomethyl radical, with the proviso that the percentage of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: August 15, 1989
    Assignee: Petrolite Corporation
    Inventors: Derek Redmore, Balram Dhawan, John L. Przybylinski
  • Patent number: 4844620
    Abstract: System for preparing on a continuous basis high-internal-phase ratio emulsions wherein the external and internal phase materials making up such emulsions have highly disparate viscosities. The phase materials are introduced into a recirculation line and a portion of the prepared emulsion is continuously directly recycled through the system.
    Type: Grant
    Filed: November 24, 1986
    Date of Patent: July 4, 1989
    Assignee: Petrolite Corporation
    Inventors: Kenneth J. Lissant, Charles H. Beltman, Guy M. Bradley