Patents Assigned to Petrolite Corporation
  • Patent number: 4402818
    Abstract: Non-petroleum organic liquids (fats, animal and vegetable oils, etc.) containing solids (e.g., hydrogenation catalysts) are purified within a unique electrofiltration system wherein the organic liquids are passed through a selected bed material in which is established an intense electric field for removing the solids. Upon solids-fillup of the bed, selective cleaning restores the bed for continued purification of the organic liquid stream. The purified organic liquid stream is monitored for indicating when the selective cleaning of the bed is required. The electrofiltration system, both in a novel electrofilter and process, produces without aging a new organic liquid product having comparable properties to multistep processed prior art organic liquid.
    Type: Grant
    Filed: April 11, 1980
    Date of Patent: September 6, 1983
    Assignee: Petrolite Corporation
    Inventor: Serafin B. Oberton
  • Patent number: 4396417
    Abstract: Thixotropic high internal phase ratio emulsions containing biologically active agents including biocides, insecticides, fungicides, herbicides, defoliants, desiccants, seed disinfectants, growth regulators, etc., which are useful, for example, in agricultural applications. These emulsions include oily in non-oily and non-oily in oily emulsions having an internal phase of at least 60% but preferably 80-95%.
    Type: Grant
    Filed: April 26, 1978
    Date of Patent: August 2, 1983
    Assignee: Petrolite Corporation
    Inventor: Kenneth J. Lissant
  • Patent number: 4395318
    Abstract: Test, auxiliary and reference electrodes are immersed in a corrodant fluid. The test electrode is cathodically polarized by a cathodic polarization circuit. Peak current flow in the auxiliary electrode is measured and a linear cathodic polarization function is generated by a computer circuit. The test electrode is forwardly and reversely anodically polarized by an anodic polarization circuit. A comparator circuit senses the voltage of the test electrode with respect to the auxiliary electrode during reverse anodic polarization and compares this value to the cathodic polarization function. When the test electrode voltage and cathodic polarization function are equal, an anodic memory circuit stores the value of the current passing through the test electrode. This current is the pitting current which is converted into pitting rate.
    Type: Grant
    Filed: January 15, 1982
    Date of Patent: July 26, 1983
    Assignee: Petrolite Corporation
    Inventors: William S. Tait, Richard L. Martin, Richard A. Rodgers
  • Patent number: 4393026
    Abstract: This invention relates to the following:(a) 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 10, 1981
    Date of Patent: July 12, 1983
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Patent number: 4388452
    Abstract: This invention relates to .alpha.-olefin-acrylonitrile copolymers and uses thereof, particularly as antistatic agents in organic liquids such as hydrocarbon fuels.
    Type: Grant
    Filed: October 16, 1981
    Date of Patent: June 14, 1983
    Assignee: Petrolite Corporation
    Inventors: Michael I. Naiman, Rudolf S. Buriks
  • Patent number: 4387074
    Abstract: Methylol derivatives of 2,3,4,5-tetrahydropyrimidines and to uses thereof, particularly as corrosion inhibitors.
    Type: Grant
    Filed: December 31, 1981
    Date of Patent: June 7, 1983
    Assignee: Petrolite Corporation
    Inventors: Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Patent number: 4383933
    Abstract: This invention relates to a composition comprising an O/W demulsifier and a titanium compound, and to the use thereof as an O/W demulsifier. The O/W demulsifier contains amino groups, preferably in quaternary form. The titanium compound is believed to combine with the quaternary amino group to form a quaternary amino-titanium complex.
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: May 17, 1983
    Assignee: Petrolite Corporation
    Inventor: Fred W. Jenkins
  • Patent number: 4383438
    Abstract: A fouling test apparatus comprising a cylindrical pressure vessel, means for controlling the temperature of fluid contained in the vessel, cylindrical probe having a metallic surface concentric with the vessel walls and provided with a heater for such surface; stirrer in the form of a rotor open at at least one end and positioned between and concentric with the vessel walls and the probe, and sensor for measuring the temperature of the fluid contained in the vessel and the temperature of the probe surface. The probe simulates a heat exchanger surface exposed to a fouling liquid medium. Deposits accumulate on the heated surface in a similar fashion to an actual system and the parameters which affect fouling are all represented. The probe operates with a constant heat flux. As deposits accumulate, the surface temperature of the probe increases and is used as a measure of the deposit formation. The probe is maintained in a stationary position and the stirrer is not dependent on an electrical feed-through.
    Type: Grant
    Filed: June 2, 1981
    Date of Patent: May 17, 1983
    Assignee: Petrolite Corporation
    Inventor: Paul E. Eaton
  • Patent number: 4383926
    Abstract: This invention relates to N,N-diallyl-3-hydroxy azetidinium salts, homo- and co-polymers thereof; and the preparation thereof. This invention also relates to the use of the above polymers as demulsifiers.
    Type: Grant
    Filed: January 15, 1982
    Date of Patent: May 17, 1983
    Assignee: Petrolite Corporation
    Inventors: Rudolf S. Buriks, Eva G. Lovett
  • Patent number: 4382874
    Abstract: This invention relates to a composition comprising an O/W demulsifier and a zirconium compound, and to the use thereof as an O/W demulsifier. The O/W demulsifier contains amino groups, preferably in quaternary form. The zirconium compound is believed to combine with the quaternary amino group to form a quaternary amino-zirconium complex.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: May 10, 1983
    Assignee: Petrolite Corporation
    Inventor: Fred W. Jenkins
  • Patent number: 4376708
    Abstract: This invention relates to ureylene prepared by reacting an oxyalkylated polyamine with urea and to uses of such ureylene for example in removing oils, solids, and combinations thereof from aqueous systems, etc.
    Type: Grant
    Filed: May 11, 1981
    Date of Patent: March 15, 1983
    Assignee: Petrolite Corporation
    Inventor: Thomas J. Bellos
  • Patent number: 4374724
    Abstract: A desalter/dehydrater having a plurality of electrified coalescing stages in a single vessel wherein the stages are isolated hydraulically to allow parallel or serial stage operation and the emulsion being treated is introduced at one side of the vessel and caused to flow to the opposite side between horizontal planar permeable electrodes. In one embodiment, several electrical stages are operated in parallel to increase vessel throughput capacity. In another embodiment, series operation is employed, wherein each successive stage receives the product from the preceding stage as feed, with fresh water being added. The number of stages is one less than the number of the electrodes.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: February 22, 1983
    Assignee: Petrolite Corporation
    Inventor: James R. Robinson
  • Patent number: 4372837
    Abstract: A radial flow electrofilter having a plurality of parallel planar horizontal electrodes. The filter may be provided with backflush means, in which case the filter medium preferably consists of non-deformable particles, or else a removable filter pack, preferably employing polyurethane foam, may be employed. In operation, finely divided solids, contained in a liquid of low electrical conductivity, may be efficiently removed by passing the liquid radially through the filter, while subjected to a unidirectional current electric field, from the periphery of the filter toward its center.
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: February 8, 1983
    Assignee: Petrolite Corporation
    Inventors: Frederick D. Watson, Weldon D. Mayse, Albert D. Franse
  • Patent number: 4372775
    Abstract: This invention relates to thiazine quaternary ammonium salts of polyepihalohydrin and the preparation and uses thereof. The compositions are ideally expressed by the polymer unit ##STR1## where Z is S, SO, or SO.sub.2,R is hydrogen or a hydrocarbon group,R' is a hydrocarbon group, andX is halogen.
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: February 8, 1983
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Patent number: 4371398
    Abstract: This invention relates to the use of polyolefins as protective coatings and/or restorers, preferably applied as an emulsion.This invention also relates to a system of floor care employing such polyolefin emulsions to maintain and/or restore floor finishes. They are particularly effective in restoring powdered floor coatings to a high gloss which is slip resistant.
    Type: Grant
    Filed: July 16, 1980
    Date of Patent: February 1, 1983
    Assignee: Petrolite Corporation
    Inventor: Americo L. Forchielli
  • Patent number: 4371434
    Abstract: An apparatus for dehydrating and degassing oil-continuous emulsions containing gases and a dispersed aqueous phase comprising a treating vessel provided with a combined distributor-degasser having an inverted trough with orifices along the sides and with an upper peaked portion having a central upwardly directed opening; a demister in the central opening communicating with the trough; a defoamer in the peaked portion on each side of and communicating with the demister; means associated with the trough for communicating with liquid-gas interface level control means; and a gas outlet in the demister. The treating vessel is provided with emulsion inlet means communicating with the inverted trough, a gas outlet communicating with the demister, and water and treated oil outlets. The treating vessel is preferably provided with an electrode system and means for controlling the aqueous material level at a position between the distributor-degasser and the electrode system.
    Type: Grant
    Filed: June 22, 1981
    Date of Patent: February 1, 1983
    Assignee: Petrolite Corporation
    Inventor: Eugene L. Clarke
  • Patent number: 4371497
    Abstract: This invention relates to thiazine quaternary ammonium salts of polyepihalohydrin and the preparation and uses thereof. The compositions are ideally expressed by the polymer unit ##STR1## where Z is S, SO, or SO.sub.2,R is hydrogen or a hydrocarbon group,R' is a hydrocarbon groupand X is halogen.
    Type: Grant
    Filed: June 9, 1981
    Date of Patent: February 1, 1983
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Patent number: 4368137
    Abstract: This invention relates to polymerized oxyalkylated piperazines, to the salts and quaternaries thereof; and to uses thereof for example as demulsifiers, flotation aids, etc.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: January 11, 1983
    Assignee: Petrolite Corporation
    Inventor: Thomas J. Bellos
  • Patent number: 4361555
    Abstract: This invention relates to .alpha.-1,4-thiazine alkanephosphonic acids; and to the preparation and uses thereof.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: November 30, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Patent number: 4358382
    Abstract: This invention relates to alkylated derivatives of polymerized aromatic nitrogen heterocyclic compounds as illustrated by polymerized pyridine, quinoline and derivatives thereof; and uses thereof.These compositions are polymerized by treating said aromatic nitrogen heterocyclic compounds at elevated temperatures and pressures with catalytic amounts of alkyl halides and then alkylating the polymerized products formed.The polymers of this disclosure are useful in many areas including utility as corrosion inhibitors, water clarification, as microbiocides, in resolving emulsions and the like.
    Type: Grant
    Filed: March 12, 1981
    Date of Patent: November 9, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan