Patents Assigned to Petrolite Corporation
  • Compounds containing sulfur and amino groups
    Patent number: 4843176
    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: October 25, 1985
    Date of Patent: June 27, 1989
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Polyalkanolamines
    Patent number: 4840748
    Abstract: Polyalkanolamines of controlled molecular weights and their uses as demulsifiers and/or flotation agents.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: June 20, 1989
    Assignee: Petrolite Corporation
    Inventors: Thomas J. Bellos, Eva G. Lovett
  • Methods for treating hydrocarbon recovery operations and industrial waters
    Patent number: 4826625
    Abstract: Use of nitrogen-containing tridithiocarbamic acid compositions as reverse demulsifiers.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: May 2, 1989
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Pressure relief device
    Patent number: 4819683
    Abstract: A pressure release device for sealably mounting on a vessel adapted to contain a fluid under pressure not to exceed a predetermined maximum pressurization limit.
    Type: Grant
    Filed: January 29, 1988
    Date of Patent: April 11, 1989
    Assignee: Petrolite Corporation
    Inventors: Brian W. Buffham, Daniel J. Marquardt
  • Method of removing water soluble organics from oil process water
    Patent number: 4818410
    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 strong 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 corrosion 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: January 14, 1988
    Date of Patent: April 4, 1989
    Assignee: Petrolite Corporation
    Inventors: Thomas J. Bellos, Roy W. Greenlee, Frederick T. Welge
  • Multipurpose aqueous foamer
    Patent number: 4796702
    Abstract: The invention provides a surfactant mixture, comprising a zwitterionic surfactant, a nonionic surfactant and a cationic surfactant, which forms a foamable liquid composition upon addition to aqueous media including fresh water, brines, acids and water/alcohol mixtures. The foams prepared from the foamable liquid composition have utility as fracturing fluids and well cleaning fluids.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: January 10, 1989
    Assignee: Petrolite Corporation
    Inventor: Gary A. Scherubel
  • Method for preparation of hydrocarbon fracturing fluids, fluids prepared thereby, and methods related thereto
    Patent number: 4787994
    Abstract: A method for viscosifying a liquid hydrocarbon-based fracturing fluid is disclosed. The method comprises mixing together a liquid hydrocarbon, an acid, a phosphate composition and an aluminate activator. The phosphate composition comprises an organic phosphate ester selected from the group consisting of orthophosphate esters of the formulae ##STR1## wherein R is an alkyl group containing one to about eight carbon atoms and R' is selected fromt the group consisting of alkyl groups containing about six to about eighteen carbon atoms, alkenyl groups containing about six to about eighteen carbon atoms and mixtures thereof. Hydrocarbon-based fracturing fluids prepared by such method, and methods of use of such fluids are also disclosed.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: November 29, 1988
    Assignee: Petrolite Corporation
    Inventors: Michael A. Thorne, Gary A. Scherubel
  • Encapsulated breaker for cross-linked acid gel, fracture acidizing fluid containing same and method of use thereof
    Patent number: 4770796
    Abstract: Fracture acidizing fluids are provided containing an encapsulated breaker which releases breaker at a regulated rate over time.
    Type: Grant
    Filed: January 12, 1987
    Date of Patent: September 13, 1988
    Assignee: Petrolite Corporation
    Inventor: Irwin C. Jacobs
  • Extrusion processing aid composition and polyolefin containing same
    Patent number: 4764326
    Abstract: There is disclosed an extrusion processing aid composition for the extrusion of polyolefins, particularly linear low density polyethylene and high density polyethylene films of sheets; polyolefin compositions containing said processing aid and a process of extruding polyolefins using said processing aid. The processing aid is a composition comprising (a) an amide of a saturated or unsaturated carboxylic acid or a saturated or unsaturated alkylene bis-amide of a saturated or unsaturated dicarboxylic acid; (b) an aliphatic hydrocarbon polymer mixture having a molecular weight of from about 400 to about 50,000; and (c) an oxygen-containing high density, low molecular weight ethylene polymer.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: August 16, 1988
    Assignee: Petrolite Corporation
    Inventor: John Hakim
  • Shale stabilizer and method of use thereof
    Patent number: 4757862
    Abstract: Water-soluble copolymers which are essentially free of cross-linking are useful as shale stabilizers. These copolymers are random copolymers of a vinyl carboxamide monomer and a hydroxy-containing vinyl carboxylic ester. These shale stabilizers are added to a drilling fluid which is then circulated through a well bore whereby the shale stabilizers come in contact with the shale formation and inhibit hydration of shale to prevent sloughing thereof.
    Type: Grant
    Filed: August 21, 1986
    Date of Patent: July 19, 1988
    Assignee: Petrolite Corporation
    Inventors: Michael I. Naiman, John A. Schield
  • Preparation of diamines from aldehydes and ammonia
    Patent number: 4757147
    Abstract: This invention relates to novel highly branched amines and to a process of preparing same which comprises:(1) the preparation of a vinylimine from branched aldehydes and ammonia;(2) the dimerization and intermolecular condensation of such vinylimines to cyclic diamines; and(3) hydrolysis of such cyclic diamines to other diamines.
    Type: Grant
    Filed: September 5, 1985
    Date of Patent: July 12, 1988
    Assignee: Petrolite Corporation
    Inventors: Benjamin T. Outlaw, Bernardus A. Oude Alink
  • .alpha.-aminoalkylsulfur compositions
    Patent number: 4751051
    Abstract: The uses of .alpha.-aminoalkyl sulfur compositions and to the preparation thereof, particularly as corrosion inhibitors. These compositions contain a moiety of the general formula ##STR1## in a linear or cyclic configuration.
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: June 14, 1988
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. O. Alink
  • Polyalkanolamines
    Patent number: 4731481
    Abstract: Polyalkanolamines of controlled molecular weights and their uses as demulsifiers and/or flotation agents.
    Type: Grant
    Filed: November 30, 1984
    Date of Patent: March 15, 1988
    Assignee: Petrolite Corporation
    Inventors: Thomas J. Bellos, Eva G. Lovett
  • Multifunctional corrosion inhibitors
    Patent number: 4722805
    Abstract: Corrosion inhibitors for ferrous metals are provided which afford protection from general corrosion and cracking-type corrosion, which inhibitors are reaction products of acylated polyamines and phosphate esters.
    Type: Grant
    Filed: August 30, 1985
    Date of Patent: February 2, 1988
    Assignee: Petrolite Corporation
    Inventor: Richard L. Martin
  • Quaternary ammonium derivatives of 1,4-thiazine sulfonic acids
    Patent number: 4720492
    Abstract: This invention relates to compositions of the formula ##STR1## where R is a hydrocarbon, A is alkylene, and Z is S, SO, SO.sub.2, and salts thereof. This invention also relates to uses thereof, for example as microbiocidal agents, corrosion inhibitors, etc.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: January 19, 1988
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Cold flow improver and method of use thereof
    Patent number: 4708993
    Abstract: Oligomers of polymerizable ester-containing halopolyalkylenes are effective as cold flow improvers in middle distillate fuels.
    Type: Grant
    Filed: August 6, 1986
    Date of Patent: November 24, 1987
    Assignee: Petrolite Corporation
    Inventors: Michael I. Naiman, John A. Schield, Lawrence J. Cunningham
  • Extrusion processing aid composition and polyolefin containing same
    Patent number: 4701487
    Abstract: There is disclosed an extrusion processing aid composition for the extrusion of polyolefins, particularly linear low density polyethylene and high density polyethylene films or sheets; polyolefin compositions containing said processing aid and a process of extruding polyolefins using said processing aid. The processing aid is a composition comprising (a) an amide of a saturated or unsaturated carboxylic acid or a saturated or unsaturated alkylene bis-amide of a saturated or unsaturated dicarboxylic acid; (b) an aliphatic hydrocarbon polymer mixture having a molecular weight of from about 400 to about 50,000; and (c) an oxygen-containing high density, low molecular weight ethylene polymer.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: October 20, 1987
    Assignee: Petrolite Corporation
    Inventor: John Hakim
  • Azetidinium salts and process of preparation
    Patent number: 4689418
    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: August 25, 1987
    Assignee: Petrolite Corporation
    Inventors: Rudolf S. Buriks, Eva G. Lovett
  • Use of tridithiocarbamic acid compositions as demulsifiers
    Patent number: 4689177
    Abstract: Use of nitrogen-containing tridithiocarbamic acid compositions as reverse demulsifiers.
    Type: Grant
    Filed: October 15, 1986
    Date of Patent: August 25, 1987
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Process of corrosion inhibition using compounds containing sulfur and amino groups
    Patent number: 4684507
    Abstract: A process for inhibiting the corrosion of ferrous metals in aqueous acidic or briny media comprising the step of adding a composition of the formula ##STR1## where R.sub.1 is a hydrocarbon group, O is a pyridine or substituted pyridine, and X is an anion.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: August 4, 1987
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw