Patents Assigned to Petrolite Corporation
  • Quaternaries of tertiary amino-substituted thiazines
    Patent number: 4332799
    Abstract: This invention relates to quaternaries of tertiary amino-substituted thiazines; the process of preparing such quaternary thiazines; and uses thereof, for example, as corrosion inhibitors, microbiocides, etc.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: June 1, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Compounds containing sulfur and amino groups
    Patent number: 4332967
    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: June 19, 1980
    Date of Patent: June 1, 1982
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Demulsification process with thiazine quaternary ammonium salts of polyepihalohydrin
    Patent number: 4331554
    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: May 25, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • N,N-Dimethylene phosponic acids of alkylene diamines
    Patent number: 4330487
    Abstract: This invention relates to a process of preparing N,N'-disubstituted methylene phosphonic acids by reacting .alpha., .omega.-alkylene diamines with essentially 2 equivalents of formaldehyde and phosphorus acid based on replaced nitrogen-bonded hydrogens.This invention also relates to compositions formed by the process and to the uses for these compositions such as for inhibiting scale, etc.
    Type: Grant
    Filed: October 29, 1980
    Date of Patent: May 18, 1982
    Assignee: Petrolite Corporation
    Inventors: Derek Redmore, William S. Paley
  • Reaction products of alkyl and alkenyl succinic acids and ether diamines
    Patent number: 4326987
    Abstract: This invention relates to the reaction products of(1) an alkenyl or alkyl succinic acid or the anhydride thereof; and(2) an alkylether diamine; and to the use thereof as a corrosion inhibitor.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: April 27, 1982
    Assignee: Petrolite Corporation
    Inventors: Carl C. Hendricks, Richard L. Godar, Kenneth R. Roux
  • Electrical resistance corrosion probe
    Patent number: 4326164
    Abstract: An electrical resistance corrosion monitoring probe having a single lateral face of each of two rectangular prismatic elements of similar temperature-resistance characteristics but different thicknesses exposed to the corroding environment. Both the faces are corroded away, but the resistance change is different due to the inverse relationship between resistance and cross-sectional area. A measurement bridge network is used to monitor the change in cross-sectional area of both elements. A preferred probe embodiment, employing resistance elements having equivalent thermal masses and electrical resistances, as by using elements of the same material and of substantially equal lengths and cross-sectional areas, allows the use of a complementary measurement bridge network in its most sensitive region.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: April 20, 1982
    Assignee: Petrolite Corporation
    Inventor: Joe M. Victor
  • Process of inhibiting scale formation in aqueous systems using di-quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids
    Patent number: 4323461
    Abstract: This invention relates to novel di-quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids; the preparation thereof; and uses thereof in inhibiting scale formation in aqueous systems.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: April 6, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Process of inhibiting scale formation in aqueous systems using .alpha.-1,4-thiazine alkanephosphonic acids
    Patent number: 4323460
    Abstract: This invention relates to .alpha.-1,4-thiazine alkanephosphonic acids; and to the preparation and uses thereof in inhibiting scale formation in aqueous systems.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: April 6, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Process of inhibiting scale formation in aqueous systems using quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids
    Patent number: 4323459
    Abstract: This invention relates to quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids; and to the preparation and uses thereof in inhibiting scale formation in aqueous systems.
    Type: Grant
    Filed: September 15, 1980
    Date of Patent: April 6, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Thiazine quaternary ammonium salts of polyepihalohydrin
    Patent number: 4316007
    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: April 23, 1979
    Date of Patent: February 16, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Quaternary polyaminoamides
    Patent number: 4315087
    Abstract: This invention relates to quaternary polyaminoamides. The polyaminoamides are prepared by reacting acrylate-type compounds with polyamines as disclosed in U.S. Pat. No. 3,445,441. This invention also relates to uses for the quaternized polymer, particularly in the prevention of corrosion.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: February 9, 1982
    Assignee: Petrolite Corporation
    Inventors: Derek Redmore, Benjamin T. Outlaw
  • Exotherm control in polymerization
    Patent number: 4312969
    Abstract: This invention relates to an exothermic emulsion polymerization method characterized by the presence of a low boiling fluid as a component of one of the phases of the emulsion system, said low boiling fluid having the following characteristics:(1) It is sufficiently inert so that it does not interfere with the polymerization reaction(2) It is capable of maintaining by reflux the polymerization system at relatively even and homogeneous temperature.This is exemplified by the use of a halogenated hydrocarbon boiling below about 50.degree. C. as the low boiling fluid.
    Type: Grant
    Filed: April 16, 1980
    Date of Patent: January 26, 1982
    Assignee: Petrolite Corporation
    Inventors: Harold L. Becker, Rudolf S. Buriks, James G. Dolan
  • Polymerization of aromatic nitrogen heterocyclic compounds
    Patent number: 4312832
    Abstract: This invention relates to polymerized aromatic nitrogen heterocyclic compounds as illustrated by compounds containing nitrogen heterocyclic rings and uses thereof.Polymerization is effected by treating said aromatic nitrogen heterocyclic compounds at elevated temperatures and pressures with catalytic amounts of alkyl halides.
    Type: Grant
    Filed: August 12, 1980
    Date of Patent: January 26, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Tertiary amino-substituted thiazines
    Patent number: 4312830
    Abstract: This invention relates to tertiary amino-substituted thiazines; the process of preparing such thiazines; and uses thereof, for example, as corrosion inhibitors, microbiocides, etc.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: January 26, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Quaternaries of tertiary amino-substituted thiazines
    Patent number: 4312831
    Abstract: This invention relates to quaternaries of tertiary amino-substituted thiazines; the process of preparing such quaternary thiazines; and uses thereof, for example, as corrosion inhibitors, microbiocides, etc.
    Type: Grant
    Filed: July 7, 1980
    Date of Patent: January 26, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Process of preparing hexahydropyrimidines
    Patent number: 4311841
    Abstract: This invention relates to hexahydropyrimidines (HHP) of the formula ##STR1## where R' is a substituted group and R is hydrogen or a substituted group; the process of preparing and the uses therefor, particularly as deterioration inhibitors in hydrocarbon fuels.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: January 19, 1982
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Bernardus A. Oude Alink
  • Corrosion inhibitor for highly oxygenated systems
    Patent number: 4311662
    Abstract: This invention relates to the use of phosphorylated oxyalkylated polyols as corrosion inhibitors in highly oxygenated systems such as experienced in air drilling. These corrosion inhibitors not only inhibit general or overall corrosion but also inhibit localized corrosion of the pitting type.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: January 19, 1982
    Assignee: Petrolite Corporation
    Inventor: Thomas J. Bellos
  • .alpha.-1,4-Thiazine alkanephosphonic acids as corrosion inhibitors
    Patent number: 4311663
    Abstract: Use, as corrosion inhibitor of .alpha.-1,4-thiazine alkanephosphonic acids.
    Type: Grant
    Filed: October 2, 1980
    Date of Patent: January 19, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan
  • Quaternary ammonium adducts of polymerizable tertiary ammonium salts and acrylonitrile
    Patent number: 4310472
    Abstract: This invention relates to adducts of salts of polymerizable tertiary amines with acrylic compounds illustrated by acrylamide and acrylonitrile; to polymers and copolymers containing said adducts and to processes for preparing them. This invention also relates to the use of said polymers and copolymers, particularly in the clarification of turbid waters by flocculation or flotation of oil and/or suspended solids. In the preferred embodiment, the quaternary adduct monomer is: ##STR1## where X is an anion, preferably halide such as chloride or carboxylate such as acetate; and polymers and copolymers containing units thereof.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: January 12, 1982
    Assignee: Petrolite Corporation
    Inventors: Rudolf S. Buriks, Allen R. Fauke, David W. Griffiths
  • Di-quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids as corrosion inhibitors
    Patent number: 4309383
    Abstract: Use, as a corrosion inhibitor, of di-quaternary ammonium salts of .alpha.-1,4-thiazine alkanephosphonic acids.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: January 5, 1982
    Assignee: Petrolite Corporation
    Inventor: Patrick M. Quinlan