Patents Represented by Attorney Cortlan R. Schupbach, Jr.
  • Patent number: 4269735
    Abstract: Amorphorus titanium, uranium, chromium ions and zirconium together with sulfate ions are effective promoters for magnesium oxide catalysts. These catalysts are active for the ortho methylation of phenols in the vapor phase to yield 2,6-xylenol.
    Type: Grant
    Filed: January 21, 1980
    Date of Patent: May 26, 1981
    Assignee: Conoco, Inc.
    Inventor: Bruce E. Leach
  • Patent number: 4267161
    Abstract: Aluminum chlorohydrate is prepared by a method comprising(a) forming aluminum methoxide from aluminum alkoxides using methanol;(b) recovering aluminum methoxide as a solid precipitate phase, washing to remove higher alcohols and drying to recover a powder;(c) reacting the recovered powdered aluminum methoxide with dilute hydrochloric acid to form aluminum chlorohydrate.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: May 12, 1981
    Assignee: Conoco, Inc.
    Inventor: William C. Ziegenhain
  • Patent number: 4258220
    Abstract: 2,6-xylenol admixed with meta,para-cresol is reacted with methanol in a contact with a titanium/SO.sub.4 /magnesium oxide catalyst to yield a product stream which can be readily distilled to give 2,6-xylenol in high purity. The particular catalyst used allows low loss of 2,6-xylenol during the reactions and low amounts of side products obtained.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: March 24, 1981
    Assignee: Conoco, Inc.
    Inventors: Bruce E. Leach, Charles M. Starks
  • Patent number: 4253703
    Abstract: Subterranean coal seams are treated with ammonia to enhance methane removal and improve the mineability of coal. Residual ammonia remaining from the coal treatment is removed by contacting the coal seam with nitrifying bacteria after ammonia treatment and before mining is carried out.
    Type: Grant
    Filed: December 5, 1979
    Date of Patent: March 3, 1981
    Assignee: Conoco, Inc.
    Inventors: Anthony G. Fonseca, Bruce G. Bray, Randolph Kosky
  • Patent number: 4254287
    Abstract: Barium catalyst is removed from ethoxylated alcohols prepared using these catalysts by admixing the ethoxylated alcohols with water and mineral acid to precipitate the barium catalyst as a solid then centrifuging to remove the precipitate.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: March 3, 1981
    Assignee: Conoco, Inc.
    Inventors: William C. Ziegenhain, R. Tom Jackson, LeRoy Rose
  • Patent number: 4251453
    Abstract: An improved method is disclosed for continuously purifying crude aluminum alkyls containing solid contaminants such as aluminum particles comprising passing crude aluminum alkyls into a first holding vessel, the contents of said vessel being continuously passed under pressure through a tubular filter having an upstream inner surface and a downstream outer surface, solids-containing aluminum alkyls passing through said tubular filter returning to the holding vessel, and purified aluminum alkyls passing through the filter wall exiting through the downstream outer surface, and recovered; monitoring the solids content of the holding vessel and ceasing crude aluminum alkyl flow into said holding vessel when solid contents reach undesirably high levels, thereafter passing said crude aluminum alkyls into an alternate holding vessel and filter, then further passing the contents of said first holding vessel through said tubular filter until substantially all remaining aluminum alkyls have passed through the filter to
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: February 17, 1981
    Assignee: Conoco, Inc.
    Inventor: Harry D. Garrison
  • Patent number: 4251369
    Abstract: A coalescer is provided which separates dispersed liquid hydrocarbon phases from continuous liquid aqueous phases by increasing the size of the dispersed phase droplets using a variety of coalescing media, preferably in granular form. The coalescer must contain at least three sides; however any number of sides up to a circle can be used, and a circular cross-section is preferred. Untreated aqueous phase is drawn through the coalescer media, where the dispersed droplets increase in size. The dispersed droplets are coalesced to a sufficiently large degree to rise to the top of the coalescer against the downward flow of the continuous phase, said continuous phase being withdrawn from the bottom portion of the coalescer and the separated, previously dispersed phase withdrawn from the top of the coalescer.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: February 17, 1981
    Assignee: Conoco, Inc.
    Inventors: Burton M. Casad, R. Leroy Grimsley
  • Patent number: 4251361
    Abstract: Oil and water mixtures are separated in a gas flotation separator by passing the mixture downward in a vertically elongated portion, and then upward in a vertically elongated portion. A gas such as air is injected near the lower end of the upward flow leg of the separator. The gas is injected at a sufficient hydrostatic pressure to effect dissolving of a substantial portion of the gas in the liquid. The upflow leg has a chamber for oil flotation. Oil removal as well as water removal from respective layers is provided. The separation of oil and water is enhanced by both upwardly bubbling gas and exsolving gas.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: February 17, 1981
    Assignee: Conoco, Inc.
    Inventor: R. Leroy Grimsley
  • Patent number: 4248747
    Abstract: A friable composition single additive package for thermoplastic extrusions is provided in the instant invention. The friable composition can contain paraffin waxes, calcium stearate, various pigments, fillers, lubricants, and stabilizers.
    Type: Grant
    Filed: August 3, 1979
    Date of Patent: February 3, 1981
    Assignee: Conoco, Inc.
    Inventors: Paul H. Washecheck, Ron G. Hale
  • Patent number: 4249026
    Abstract: A mixture of 2,4-/2,5-xylenol can be alkylated with a suitable alkylating agent over a strongly acidic divinylbenzene-styrene copolymer to afford a greater amount of 4-t-alkyl-2,5-xylenol than 6-t-alkyl-2,4-xylenol provided the alkylation is carried out at a suitably low temperature of up to 60.degree. C.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: February 3, 1981
    Assignee: Conoco, Inc.
    Inventor: John R. Dodd
  • Patent number: 4247719
    Abstract: The relative amount of 2,5-xylenol in a 2,4-/2,5-xylenol mixture is significantly increased by passage of the xylenol mixture together with a suitable tertiary-alkylating agent through a reactor packed with a polymer-bound sulfonic acid catalyst at temperatures of 65.degree.-95.degree. C. and, preferably, 80.degree.-90.degree. C. The product stream from such a reactor under these conditions based on a 50:50 mixture of the two isomers contains a much greater amount of 6-t-alkyl-2,4-xylenol (t-alkylated 2,4-xylenol) than 4-t-alkyl-2,5-xylenol (t-alkylated 2,5-xylenol); consequently the resulting unalkylated 2,4-/2,5-xylenol mixture is greatly enriched in 2,5-xylenol. Recovery of the unalkylated mixture by fractionation thus affords a crude 2,5-xylenol which can be further purified to give pure 2,5-xylenol.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: January 27, 1981
    Assignee: Conoco, Inc.
    Inventors: William R. Buck, John R. Dodd
  • Patent number: 4244746
    Abstract: A friable composition single additive package for thermoplastic extrusions is provided in the instant invention. The friable composition can contain paraffin waxes, calcium stearate, various pigments, fillers, lubricants, and stabilizers.
    Type: Grant
    Filed: July 16, 1979
    Date of Patent: January 13, 1981
    Assignee: Conoco, Inc.
    Inventors: Paul H. Washecheck, Ron G. Hale
  • Patent number: 4244445
    Abstract: An apparatus is provided for use on substantially vertical poles comprising two sections which cooperate in ascending and descending said vertical poles, comprising(a) an upper section comprising a seat member having a handle member attached thereto; a gripping means removably and adjustably secured to said seat member; a brace member supporting said seat member, attached at one end to the underside of the seat member and at the opposite end contacting said pole, whereby application of force to the seat member increases the contact of the support member with said pole; and(b) a lower section comprising a foot platform having handle members attached thereto; gripping means removably and adjustably secured to said foot platform; and a brace member attached at one end beneath said platform and at the opposite end in contact with the pole, whereby application of force to the foot platform increases the grip of the brace member on said pole; whereby the pole is ascended by drawing the lower section to a convenient
    Type: Grant
    Filed: April 18, 1979
    Date of Patent: January 13, 1981
    Inventor: Clarence A. Strode
  • Patent number: 4239917
    Abstract: Barium oxide is used as an ethoxylation catalyst for the reaction of ethylene oxide and alkanols of all classes. The reaction is carried out at temperatures of from about 200.degree. to about 500.degree. F. to yield the ethoxylated product. The product obtained has a very narrow, high adduct distribution with low levels of by-products and unreacted free alcohols. Calcium and magnesium oxides show no catalytic effect.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: December 16, 1980
    Assignee: Conoco, Inc.
    Inventor: Kang Yang
  • Patent number: 4238335
    Abstract: A submarine sand filter is employed to filter water for uses requiring lack of solid contaminants, such as oil reservoir injection. The filter is provided with backwash means and allows an efficient use of differential pressure heads.
    Type: Grant
    Filed: March 12, 1979
    Date of Patent: December 9, 1980
    Assignee: Conoco, Inc.
    Inventor: R. Leroy Grimsley
  • Patent number: 4231869
    Abstract: In the recovery of hydrocarbons from petroliferous formations wherein water is injected into the formation through a borehole, oxygen is scavenged from water employed in recovery applications requiring low oxygen levels by mixing with a source of sulfite ion, said mixture then being passed over a cation exchange resin on which a cobalt ion or other metallic catalyst is adsorbed. The catalyst increases the reaction rate of the sulfite ion and the oxygen to form sulfate ion, while the resin maintains the cobalt in place.
    Type: Grant
    Filed: March 19, 1979
    Date of Patent: November 4, 1980
    Assignee: Conoco, Inc.
    Inventors: Bob L. Carlberg, Robert A. Hart
  • Patent number: 4230604
    Abstract: Polymers can be made semi-conductors by incorporating ionic metallic salts into said polymers, such that conductance levels rise more rapidly than normal as electrical potential increases. These salts are useful at levels of at least 0.007% by weight based on the total compound weight, said salts imparting a geometrically increased level of conductance as the applied electrical potential proportionally increases.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: October 28, 1980
    Assignee: Conoco, Inc.
    Inventor: James A. Wingrave
  • Patent number: 4229598
    Abstract: Butylation of a mixture of xylenols and trimethylphenols gives a product which is suitable for use as a stabilizer for polyvinyl chloride. The material can be added to the reactor during polymerization as a short-stopper and retain effectiveness as a stabilizer in the finished polymer.
    Type: Grant
    Filed: December 14, 1978
    Date of Patent: October 21, 1980
    Assignee: Conoco, Inc.
    Inventors: Dean R. Weimer, Charles M. Starks
  • Patent number: 4228311
    Abstract: A method is described for the selective dealkylation of 4-tertiary-alkyl-2,5-xylenol while it is admixed with 6-tertiary-alkyl-2,4-xylenol by contacting the mixture of alkylated xylenols with a polymer-bound sulfonic acid catalyst at temperatures of 60.degree. C. or less and pressures of from about 0.5 to 5 atmospheres. The method is useful in separating 2,4-/2,5-xylenol mixtures.
    Type: Grant
    Filed: June 8, 1979
    Date of Patent: October 14, 1980
    Assignee: Conoco, Inc.
    Inventor: John R. Dodd
  • Patent number: 4223164
    Abstract: Basic compounds of strontium catalyzed the ethoxylation of alcohols in the presence of phenol or alkylphenol co-catalyst. Strontium-produced ethoxylates have sharper ethylene oxide distributions, lower free alcohol, lower pour points, and better detergency than the ethoxylates obtained from alkali base catalysis.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: September 16, 1980
    Assignee: Conoco, Inc.
    Inventors: Kang Yang, Gerald L. Nield, Paul H. Washecheck