Patents by Inventor Charles M. Starks

Charles M. Starks has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5405916
    Abstract: Terpolymers of polyolefin/acrylic acid or substituted acrylic acid/acrylonitrile are prepared by combining a polyolefin/acrylic acid or substituted acrylic acid copolymer with at least one dinitrile to form a mixture and reacting the mixture at a temperature of at least 200.degree. C. for a time sufficient to form the terpolymer. Copolymers of polyolefin/acrylonitrile are obtained when the reaction is carried to completion. The total reaction masses obtained comprising terpolymer or copolymer, cyclic imide, solvent, when used, and any unreacted dinitrile find use as pour point depressants in heavy hydrocarbon oils.
    Type: Grant
    Filed: October 22, 1993
    Date of Patent: April 11, 1995
    Assignee: Conoco Inc.
    Inventors: Kenneth W. Pober, Charles M. Starks
  • Patent number: 5284924
    Abstract: Terpolymers of polyolefin/acrylic acid or substituted acrylic acid/acrylonitrile are prepared by combining a polyolefin/acrylic acid or substituted acrylic acid copolymer with at least one dinitrile to form a mixture and reacting the mixture at a temperature of at least 200.degree. C. for a time sufficient to form the terpolymer. Copolymers of polyolefin/acrylonitrile are obtained when the reaction is carried to completion. The total reaction masses obtained comprising terpolymer or copolymer, cyclic imide, solvent, when used and any unreacted dinitrile find use as pour point depressants in heavy hydrocarbon oils.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: February 8, 1994
    Assignee: Conoco Inc.
    Inventors: Kenneth W. Pober, Charles M. Starks
  • Patent number: 4490561
    Abstract: Fluorinated alcohols are alkyoxylated using catalysts which provide reaction products having low surface tensions and which are stable in severe acidic conditions.
    Type: Grant
    Filed: October 13, 1983
    Date of Patent: December 25, 1984
    Assignee: Conoco Inc.
    Inventors: Kang Yang, Charles M. Starks, O. Carl Kerfoot
  • Patent number: 4374755
    Abstract: Novel magnesium disiloxide compounds and methods for their preparation are disclosed. The magnesium disiloxides so obtained are useful starting materials for the preparation of active catalysts for olefin polymerizations.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: February 22, 1983
    Assignee: Conoco Inc.
    Inventors: Charles T. Berge, Mark P. Mack, Charles M. Starks
  • Patent number: 4315995
    Abstract: A process for preparing a cation-exchange resin is disclosed. The process comprises:(a) treating a chlorine-containing material, which is the distillation residue obtained by chlorinating or oxychlorinating a C.sub.2 -C.sub.40 hydrocarbon, with a sulfonating agent,(b) treating the admixture of step (a) with water and an organic solvent until the product shows a substantially neutral pH, and(c) removing the volatile materials to obtain a solid material which is suitable for use as a cation-exchange resin.
    Type: Grant
    Filed: August 22, 1980
    Date of Patent: February 16, 1982
    Assignee: Conoco Inc.
    Inventor: Charles M. Starks
  • Patent number: 4283514
    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 shortstopper and retain effectiveness as a stabilizer in the finished polymer.
    Type: Grant
    Filed: August 22, 1979
    Date of Patent: August 11, 1981
    Assignee: Conoco, Inc.
    Inventors: Dean R. Weimer, Charles M. Starks
  • 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: 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: 4200706
    Abstract: Phenol-formaldehyde resoles and novalacs are cured at temperatures of from about 0.degree. C. to about 150.degree. C. and at pressures ranging from about atmospheric pressure to about 5 atmospheres to produce highly cross-linked resins when divinylbenzene is used as a cross-linking agent together with a minor amount of an acidic catalyst.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: April 29, 1980
    Assignee: Conoco, Inc.
    Inventor: Charles M. Starks
  • Patent number: 4120881
    Abstract: Predominantly aliphatic lower hydrocarbon materials may be obtained from carbonaceous solids by a sequence of steps comprising gasifying the carbonaceous solids, combining the gasification product stream with first and second internal recycle streams, separating certain impurities from the combined stream followed by cooling to liquefy and separate the hydrocarbon materials, directly reacting the remaining carbon monoxide and hydrogen in the presence of a catalyst to produce a first internal recycle stream, fractionating the separated hydrocarbon materials to separate and recover the predominantly aliphatic lower hydrocarbon materials from the higher hydrocarbon materials, subjecting the higher hydrocarbon materials to steam cracking to produce a second internal recycle stream, and recycling the internal recycle streams for combination with the gasification product stream as noted above.
    Type: Grant
    Filed: January 9, 1975
    Date of Patent: October 17, 1978
    Assignee: Continental Oil Company
    Inventors: Charles M. Starks, Robert G. Jackson, David V. Porchey, Dennis J. Royer
  • Patent number: 4117243
    Abstract: A process for preparing o-benzylphenol is disclosed. The process comprises heating benzyl phenyl ether, either in liquid or vapor phase, in the presence of an effective amount of activated alumina catalyst.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: September 26, 1978
    Assignee: Continental Oil Company
    Inventors: Charles M. Starks, Allan J. Lundeen
  • Patent number: 4110543
    Abstract: A method of preparing hydrocarbyl-substituted cresols is disclosed. The method comprises heating a mixture of mono- or di-hydrocarbyl-substituted cresols and an alcohol, which is benzyl alcohol or a C.sub.1 -C.sub.10 aliphatic alcohol, at an elevated temperature in the presence of a catalytic amount of alumina. The product contains at least one hydrocarbyl substituent corresponding to the hydrocarbon moiety of the alcohol used in the process. A typical process employs 4,6-di-t-butyl-m-cresol and isopropanol to prepare a product mixture containing a substantial amount of thymol.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: August 29, 1978
    Assignee: Continental Oil Company
    Inventors: Thomas E. Goodwin, Charles M. Starks
  • Patent number: 4110544
    Abstract: A process for preparing cresols from di-hydrocarbyl-substituted cresols, wherein the hydrocarbyl groups contain from 3 to 7 carbon atoms, is disclosed. In the process the di-hydrocarbyl-substituted cresol is contacted with a catalyst (e.g. alumina) in the liquid phase at elevated temperatures and pressure. 4,6-di-t-butyl-m-cresol is a typical feedstock.
    Type: Grant
    Filed: January 13, 1977
    Date of Patent: August 29, 1978
    Assignee: Continental Oil Company
    Inventors: Thomas E. Goodwin, Charles M. Starks
  • Patent number: 4108909
    Abstract: A method for the production of n-alkylated cresylic acids such as n-hexyl resorcinol by direct alkylation of a cresylic acid such as resorcinol under liquid phase conditions.
    Type: Grant
    Filed: November 18, 1976
    Date of Patent: August 22, 1978
    Assignee: Continental Oil Company
    Inventors: Bruce Eugene Leach, Charles M. Starks
  • Patent number: 4105698
    Abstract: A process for preparing ortho-substituted cinnamyl phenols is disclosed. The process comprises heating a mixture of cinnamyl alcohol and phenol in the presence of an effective amount of activated alumina.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: August 8, 1978
    Assignee: Continental Oil Company
    Inventors: Charles M. Starks, Allan J. Lundeen
  • Patent number: 4105699
    Abstract: A process for preparing o-benzylphenol in high selectivity is disclosed. The process comprises heating a mixture of benzyl alcohol and phenol in the presence of an effective amount of activated alumina as a catalyst.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: August 8, 1978
    Assignee: Continental Oil Company
    Inventor: Charles M. Starks
  • Patent number: 4100207
    Abstract: A method of preparing methyl-substituted phenols is disclosed. The method comprises heating a mixture of mono- or di-hydrocarbyl-substituted cresols and methanol at an elevated temperature in the presence of a catalytic amount of magnesium oxide.
    Type: Grant
    Filed: February 24, 1977
    Date of Patent: July 11, 1978
    Assignee: Continental Oil Company
    Inventors: Thomas E. Goodwin, Charles M. Starks
  • Patent number: 4087474
    Abstract: A method for the disposal of 2-chloroethanol by conversion to readily biodegradable ethylene glycol comprising;(1) extracting 2-chloroethanol into a neutral or acidic aqueous solution;(2) adjusting the pH of the solution to at least 10 and heating to a temperature of from about 25.degree. C to about 100.degree. C to form ethylene oxide and ethylene glycol,(3) stripping the basic solution of (2) to obtain a basic aqueous phase and a distillate, the basic aqueous phase being disposed, and(4) condensing and hydrolyzing the distillate and(5) stripping said hydrolysate, recovering the volatile organic portion, and(6) disposing of ethylene glycol in aqueous solution.
    Type: Grant
    Filed: June 6, 1977
    Date of Patent: May 2, 1978
    Assignee: Continental Oil Company
    Inventors: Ronald J. Convers, Paul L. Fetzer, Homer L. Hackett, Charles M. Starks
  • Patent number: 4071566
    Abstract: Cresols and xylenols are prepared by reacting a mixture of tetramethylphenols and pentamethylphenol with phenol in the liquid phase in the presence of a catalyst selected from the group consisting of activated carbon, magnesium oxide, magnesium carbonate and magnesium hydroxide.
    Type: Grant
    Filed: January 22, 1976
    Date of Patent: January 31, 1978
    Assignee: Continental Oil Company
    Inventors: Bruce E. Leach, Charles M. Starks
  • Patent number: 4060561
    Abstract: Trimethylhydroquinone is prepared by reacting 4-methoxyphenol with methanol over MgO or MgO promoted with oxides of aluminum, uranium, titanium, cerium, manganese, zinc, and iron at temperatures of from about 350.degree. C to about 550.degree. C and pressures up to about 1,000 pounds per square inch gauge.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: November 29, 1977
    Assignee: Continental Oil Company
    Inventor: Charles M. Starks