Patents Assigned to Petrolite Corporation
  • Anti-static compositions
    Patent number: 4515603
    Abstract: This invention relates to use of surfactants, such as demulsifiers as illustrated by oxyalkylated phenol-aldehyde resins, as antistatic agents in organic fluids such as hydrocarbon fuels. These surfactants are also capable of synergistically enhancing the effect of other antistatic agents.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: May 7, 1985
    Assignee: Petrolite Corporation
    Inventors: J. Irvine Knepper, Dennis C. Sallee
  • Halide free corrosion inhibitors
    Patent number: 4514320
    Abstract: This invention relates to non-halogen salts of nitrogen and/or nitrogen-sulfur heterocyclics as corrosion inhibitors for stainless steel-containing systems. These are more effective as corrosion inhibitors when employed in combination with surfactants, preferably of the non-ionic type such as oxyalkylates.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: April 30, 1985
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Corrosion inhibition in deep gas wells by phosphate esters of poly-oxyalkylated thiols
    Patent number: 4511480
    Abstract: Phosphate esters of oxyalkylated thiols are used as corrosion inhibitors for ferrous metals in deep gas wells.
    Type: Grant
    Filed: July 20, 1983
    Date of Patent: April 16, 1985
    Assignee: Petrolite Corporation
    Inventors: Benjamin T. Outlaw, Bernardus A. Oude Alink, Joe A. Kelley, Carol S. Claywell
  • Plural stage desalting/dehydrating apparatus
    Patent number: 4511452
    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: February 16, 1983
    Date of Patent: April 16, 1985
    Assignee: Petrolite Corporation
    Inventor: James R. Robinson
  • Mixtures of alkyl and alkenyl succinic acids and polymer acids
    Patent number: 4508637
    Abstract: This invention relates to a composition comprising:(1) polymer acids such as dimer or trimer acids and mixtures thereof, and(2) an alkyl succinic acid or the anhydride thereof, and the weight ratios of (1) to (2) being less than about 3 to 1; and to the use thereof as a corrosion inhibitor.Preferably the weight ratio of (1) to (2) is about 2 to 1 or less and the polymer acid is predominantly trimer acid.
    Type: Grant
    Filed: February 28, 1980
    Date of Patent: April 2, 1985
    Assignee: Petrolite Corporation
    Inventors: William J. Heintzelman, Richard L. Godar
  • Polyalkanolamines
    Patent number: 4505839
    Abstract: Polyalkanolamines of controlled molecular weights and their uses as demulsifiers and/or flotation agents.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: March 19, 1985
    Assignee: Petrolite Corporation
    Inventors: Thomas J. Bellos, Eva G. Lovett
  • Demulsifier composition and method of use thereof
    Patent number: 4502977
    Abstract: Novel demulsifier compositions, their method of preparation and use as demulsifiers are described. The novel demulsifiers comprise the partially condensed reaction product of a blend of at least two oxyalkylated materials with a vinyl monomer. The demulsifiers are useful in the resolution of water-in-oil emulsions.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: March 5, 1985
    Assignee: Petrolite Corporation
    Inventors: Rudolf S. Buriks, James G. Dolan
  • Wax composition useful as a beeswax substitute
    Patent number: 4500359
    Abstract: This invention relates to a beeswax substitute which comprises a blend of:(1) an ester of a linear alcohol having at least about 14 carbons and a carboxylic acid or anhydride having at least 2 carbons(2) an oxidized wax having at least 22 carbons, an(3) preferably, a fatty acid having at least about 9 carbons;and to products formed therefrom such as cosmetic emulsions, etc.
    Type: Grant
    Filed: October 8, 1982
    Date of Patent: February 19, 1985
    Assignee: Petrolite Corporation
    Inventors: John H. Woods, Toby R. Graves, William E. Nasser, Ashvinkumar N. Jagtap
  • Corrosion inhibited aqueous slurries
    Patent number: 4500445
    Abstract: This invention relates to the use of phospho-compositions, for example phosphates, pyrophosphates, polyphosphates, organophosphates, etc., as corrosion inhibitors in oxygen-containing aqueous systems of particulate matter such as slurries of solids, such as coal, etc.
    Type: Grant
    Filed: March 10, 1982
    Date of Patent: February 19, 1985
    Assignee: Petrolite Corporation
    Inventors: Eddie French, Thomas G. Braga
  • Quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids
    Patent number: 4494977
    Abstract: This invention relates to quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids; and to the preparation and uses thereof.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: January 22, 1985
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Mercapto-polycarboxylic acids
    Patent number: 4495336
    Abstract: This invention relates to a sulfidic process of inhibiting corrosion which comprises heating a system with a sulfur-containing polycarboxylic acid or derivatives thereof having carboxylic groups attached to adjacent carbons.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: January 22, 1985
    Assignee: Petrolite Corporation
    Inventors: Rudolf H. Hausler, Neil E. S. Thompson
  • Thioureylenes
    Patent number: 4492658
    Abstract: This invention relates to Thioureylene prepared by reacting an oxyalkylated polyamine with thiourea and to uses of such Thioureylene for example in removing oils, solids, and combinations thereof from aqueous systems, etc.
    Type: Grant
    Filed: July 21, 1980
    Date of Patent: January 8, 1985
    Assignee: Petrolite Corporation
    Inventor: Thomas J. Bellos
  • Antistats containing acrylonitrile copolymers and polyamines
    Patent number: 4491651
    Abstract: This invention relates to compositions comprising (1) acrylic-type ester-acrylonitrile copolymers and (2) polymeric polyamines; and to such compositions in combination with organic liquids such as hydrocarbon fluids in which such compositions are effective as antistatic agents.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: January 1, 1985
    Assignee: Petrolite Corporation
    Inventor: Michael I. Naiman
  • 2,5,6,8,9-Penta-alkyl or penta-aralkyl-substituted 1,3,7-triazabicyclo(3,3,1) non-3-enes and trialkyl or triaralkyl-substituted tetrahydropyrimidines
    Patent number: 4490293
    Abstract: This invention relates to the preparation of penta-alkyl (or aralkyl)-substituted 1,3,7-triazabicyclo (3,3,1) non-3-enes (TBN's) and trialkyl (or aralkyl)-substituted tetrahydropyrimidines (THP's) by reacting trialkyl (or aralkyl)-hexahydrotriazines and/or N,N'-dialkylidene 1,1-diamino alkanes in the presence of a Lewis acid; and to the products thereof.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: December 25, 1984
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • Hexahydropyrimidines and corresponding linear polyamines
    Patent number: 4480095
    Abstract: This invention relates to a process of reducing 2,4,5-trialkyl 2,3,4,5-tetrahydropyrimidine and/or 2,5,6,8,9-pentaalkyl 1,3,7-triazabicyclo (3,3,1) non-3-enes to yield 2,4,5-trialkylhexahydropyrimides and/or 2,4,5,6-tetraalkyl-5-(2-azoalkyl) hexahydropyrimidines; and to the cleavage of the above reduced products so as to convert the above hexahydropyrimides from cyclic amines to corresponding linear diamines and triamines. This invention also relates to the products produced by the processes.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: October 30, 1984
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. Oude Alink
  • Preparation of dihydrothiazoles
    Patent number: 4477674
    Abstract: This invention relates to dihydrothiazoles and to the preparation thereof by reacting aza-alkylene-dienes with sulfur.
    Type: Grant
    Filed: March 4, 1983
    Date of Patent: October 16, 1984
    Assignee: Petrolite Corporation
    Inventor: Bernardus A. O. Alink
  • Ester-containing halopolyalkylenes
    Patent number: 4471098
    Abstract: This invention relates to polyalkylenes which contain both halogen and ester groups, to the preparation thereof, and to the use thereof as pour depressants for fuel oils. This invention also relates to polyalkylene esters.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: September 11, 1984
    Assignee: Petrolite Corporation
    Inventors: Michael I. Naiman, John A. Schield
  • Prevention of copper plating during chemical cleaning operations
    Patent number: 4465620
    Abstract: There is provided a composition which inhibits corrosion and copper plate-out during chemical cleaning of a steam or water carrying system. The composition comprises an .alpha.-aminoalkylsulfide and a surface active agent.
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: August 14, 1984
    Assignee: Petrolite Corporation
    Inventor: Neil E. S. Thompson
  • Block polymers of alkanolamines as demulsifiers for O/W emulsions
    Patent number: 4459220
    Abstract: This invention relates to block polymers of polyalkanolamine, for example a polymer where one block is polyethanolamine and the other block is polypropanolamine, etc.; and to uses thereof, for example as demulsifiers.
    Type: Grant
    Filed: June 2, 1983
    Date of Patent: July 10, 1984
    Assignee: Petrolite Corporation
    Inventor: Thomas J. Bellos
  • Process of treating aqueous systems
    Patent number: 4454047
    Abstract: A process of treating an aqueous system which comprises adding to the system a stable emulsion of an aqueous internal phase in a non-aqueous external phase. The aqueous internal phase contains a homo- or a copolymer of an acrylamido alkylene quaternary ammonium salt.
    Type: Grant
    Filed: May 18, 1982
    Date of Patent: June 12, 1984
    Assignee: Petrolite Corporation
    Inventors: Harold L. Becker, Rudolf S. Buriks