Patents by Inventor George C. Blytas

George C. Blytas 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: 5558939
    Abstract: A method for producing an epoxy polyetherpolyol having 15 to 75 wt % epoxy comprising heating a polyol and catalyst to initiate condensation, removing water, introducing sufficient epoxy into the reaction mixture to give 15 to 75 wt % epoxy in the product. Generally, between 0.5 and 1.19 moles of water per mole of polyol are removed. In one embodiment at least 95 wt % of all of the polyol is introduced initially into the reaction zone. In another embodiment the condensation is terminated prior to 93 percent completion. Also provided are novel compositions suitable for drilling fluids, adhesives and coatings.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: September 24, 1996
    Assignee: Shell Oil Company
    Inventors: George C. Blytas, Arthur H. Hale
  • Patent number: 5428178
    Abstract: Method for preparing polyethercyclicpolyol by heating alkali and/or alkaline earth hydroxide optionally with polyol, its precursors or derivatives, admixing epoxy alcohol or epihalohydrin therewith to initiate an addition reaction, and thermally condensing the product of the addition reaction.
    Type: Grant
    Filed: April 7, 1994
    Date of Patent: June 27, 1995
    Assignee: Shell Oil Company
    Inventors: Anne H. Zuzich, George C. Blytas, Harry Frank
  • Patent number: 5412115
    Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the polyol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration. Lower molecular weight polyethercyclicpolyols are polycondensed with phenolic hydroxyl-containing compounds to form higher molecular weight polyethercyclicpolyols.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: May 2, 1995
    Assignee: Shell Oil Company
    Inventors: Anne H. Zuzich, George C. Blytas
  • Patent number: 5403963
    Abstract: A process for producing lower alcohols is presented in which an olefinic feed and H.sub.2 SO.sub.4 react to form a mixture comprising alkyl sulfates, alkyl disulfates, fat acid, and nonpolar hydrocarbons. The mixture is separated into two phases, a nonpolar phase comprising nonpolar hydrocarbons and a polar phase comprising alkyl sulfates, alkyl disulfates, and fat acids. A rag-layer that forms between the nonpolar and polar phases comprising carbonaceous particulate material is removed by contact with an extraction reagent. This can be a slip stream comprising an etheric derivative of the olefinic feed and an oligomeric derivative of the feed which is withdrawn from a subsequent step the process. This forms a separate hydrocarbon phase which is then extracted. The sulfates are then hydrolyzed to form alcohol.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: April 4, 1995
    Assignee: Shell Oil Company
    Inventors: Robert P. Adamski, George C. Blytas
  • Patent number: 5401860
    Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the polyol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration. Lower molecular weight polyethercyclicpolyols are copolymerized with epoxy resins to form higher molecular weight polyethercyclicpolyols.
    Type: Grant
    Filed: May 26, 1993
    Date of Patent: March 28, 1995
    Assignee: Shell Oil Company
    Inventors: George C. Blytas, Harry Frank
  • Patent number: 5371243
    Abstract: Method for preparing polyethercyclicpolyol by heating a reaction mixture of an alkali or alkaline earth metal hydroxide with a polyol, adding epihalohydrin to initiate an addition reaction, and heating the mixture until the reaction is complete.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: December 6, 1994
    Assignee: Shell Oil Company
    Inventors: Anne H. Zuzich, George C. Blytas, Harry Frank
  • Patent number: 5371244
    Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the polyol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration. Lower molecular weight polyethercyclicpolyols are polycondensed ith dihydric alcohols to form higher molecular weight polyethercyclicpolyols.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: December 6, 1994
    Assignee: Shell Oil Company
    Inventor: George C. Blytas
  • Patent number: 5367089
    Abstract: Method for preparing polyethercyclicpolyol by heating an alkali or alkaline earth metal hydroxide with a polyol and epihalohydrin or epoxy alcohol to initiate an addition reaction, and adding epoxy resin to the addition reaction mixture prior to the addition reaction going to completion.
    Type: Grant
    Filed: November 8, 1993
    Date of Patent: November 22, 1994
    Assignee: Shell Oil Company
    Inventors: Anne H. Zuzich, George C. Blytas
  • Patent number: 5338870
    Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the polyol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration.
    Type: Grant
    Filed: August 21, 1992
    Date of Patent: August 16, 1994
    Assignee: Shell Oil Company
    Inventors: George C. Blytas, Eugene L. Holloway, Anne H. Zuzich
  • Patent number: 5302695
    Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the glycol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration. Lower molecular weight polyethercyclicpolyols are polycondensed with epoxy alcohols to form higher molecular weight polyethercyclicpolyols.
    Type: Grant
    Filed: September 10, 1993
    Date of Patent: April 12, 1994
    Assignee: Shell Oil Company
    Inventors: Harry Frank, George C. Blytas, Anne H. Zuzich
  • Patent number: 5302728
    Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the polyol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration. Lower molecular weight polyethercyclicpolyols are polycondensed with phenolic hydroxyl-containing compounds to form higher molecular weight polyethercyclicpolyols.
    Type: Grant
    Filed: January 28, 1993
    Date of Patent: April 12, 1994
    Assignee: Shell Oil Company
    Inventors: Anne H. Zuzich, George C. Blytas
  • Patent number: 5286882
    Abstract: Method for preparing polyethercyclicpolyol by heating an alkali or alkaline earth metal hydroxide with a polyol and epihalohydrin or epoxy alcohol to initiate an addition reaction, and adding epoxy resin to the addition reaction mixture prior to the addition reaction going to completion.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: February 15, 1994
    Assignee: Shell Oil Company
    Inventors: Anne H. Zuzich, George C. Blytas
  • Patent number: 5260269
    Abstract: An aqueous base drilling fluid additive composed of salt and lime or gypsum, and including an acyclic polyol and/or cyclicetherpolyol and salt.
    Type: Grant
    Filed: March 19, 1991
    Date of Patent: November 9, 1993
    Assignee: Shell Oil Company
    Inventors: Arthur H. Hale, George C. Blytas
  • Patent number: 5248665
    Abstract: Drilling fluid properties are enhanced by incorporation thereinto of a cyclicetherpolyol such as a cyclic dimer of glycerol and, optionally, a polyol such as glycerol or a monoalicyclicpolyol, and/or salt.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: September 28, 1993
    Assignee: Shell Oil Company
    Inventors: Arthur H. Hale, George C. Blytas, Ashok K. R. Dewan
  • Patent number: 5248664
    Abstract: Oil in water emulsion drilling fluid properties are enhanced by incorporation thereinto of an alcohol such as glycerol or polycyclicpolyetherpolyol and salt.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: September 28, 1993
    Assignee: Shell Oil Company
    Inventors: Arthur H. Hale, George C. Blytas
  • Patent number: 5233055
    Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the polyol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration. Lower molecular weight polyethercyclicpolyols are copolymerized with epoxy resins to form higher molecular weight polyethercyclicpolyols.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: August 3, 1993
    Assignee: Shell Oil Company
    Inventors: George C. Blytas, Harry Frank
  • Patent number: 5204444
    Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the polyol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration. Lower molecular weight polyethercyclicpolyols are polycondensed with epoxy alcohols to form higher molecular weight polyethercyclicpolyols.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: April 20, 1993
    Assignee: Shell Oil Company
    Inventors: Harry Frank, George C. Blytas, Anne H. Zuzich
  • Patent number: 5198416
    Abstract: An invert oil emulsion drilling fluid containing oil, an emulsifier such as a fatty acid soap, clay or polymer, and an alcohol such as glycerol or cyclicetherpolyol as the internal phase of the emulsion. A method using substantially water-free drilling fluid and monitoring the influx of formation water into the drilling fluid.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: March 30, 1993
    Assignee: Shell Oil Company
    Inventors: Arthur H. Hale, George C. Blytas
  • Patent number: 5198532
    Abstract: Polyethercyclicpolyols are prepared by thermally condensing a polyol having at least three hydroxyl groups of which at least two of the hydroxyl groups are vicinal, precursors of the polyol, cyclic derivatives of the polyol, or mixtures thereof, and controlling process conditions to avoid substantial undesirable degeneration. Lower molecular weight polyethercyclicpolyols are polycondensed with epihalohydrins to form higher molecular weight polyethercyclicpolyols.
    Type: Grant
    Filed: April 14, 1992
    Date of Patent: March 30, 1993
    Assignee: Shell Oil Company
    Inventors: George C. Blytas, Harry Frank, Anne H. Zuzich
  • Patent number: 5149460
    Abstract: A process for removal of H.sub.2 S from gas streams is described, the process being characterized by use of a novel iron chelate treating solution containing a specified ferric to ferrous chelate ratio, aqueous ammonia, and thiosulfate ion.
    Type: Grant
    Filed: September 18, 1991
    Date of Patent: September 22, 1992
    Assignee: Shell Oil Company
    Inventors: Donald C. Olson, John J. Miller, deceased, Wayne R. Miller, executor, George C. Blytas, Zaida Diaz