Patents by Inventor John M. McIntyre

John M. McIntyre 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: 5057557
    Abstract: Epoxy resins are modified by reaction with an acidified polytertiary amine-containing compound. These modified epoxy resins when cured result in products having improved properties.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: October 15, 1991
    Assignee: The Dow Chemical Company
    Inventors: Duane S. Treybig, Pong S. Sheih, John M. McIntyre
  • Patent number: 4969986
    Abstract: Electrochemical regeneration in an electrochemical cell of spent scrubbing solutions containing polyvalent metal chelates is accomplished without substantial degradation of the chelate by controlling the anolyte pH and maintaining the anode potential of the cell above the oxidation potential of the polyvalent metal chelate but below the oxidation potential of the chelate portion of the polyvalent metal chelate.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: November 13, 1990
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Bruce R. Smith
  • Patent number: 4946569
    Abstract: A method for preparing an advanced epoxy cationic resin from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups, wherein the improvement is using as the epoxy-based resin a blend of (I) an epoxy-based resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of a polyetherpolyol, such as a condensation product of dipropylene glycol and epichlorohydrin having an epoxy equivalent weight of 185, optionally (2) a diglycidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A, (3) a dihydric phenol such as bisphenol A, and optionally (4) a capping agent such as p-nonylphenol and (II) a different cationic epoxy-based resin. Such resin blends can be utilized in cathodic electrodeposition coating systems. Use of the diglycidylether of a polyetherpolyol provides coating compositions with lower viscosity and produces deposition coatings of higher film build than compositions without this component.
    Type: Grant
    Filed: January 17, 1989
    Date of Patent: August 7, 1990
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Nancy A. Rao, Richard A. Hickner
  • Patent number: 4872961
    Abstract: Cathodic electrodepositable coating compositions comprising an aqueous dispersion of (1) at least one cationic epoxy-based resin, (2) at least one blocked isocyanate crosslinker, and (3) a solvent system containing one or more organic solvents are improved by (a) employing a blocked isocyanate crosslinker which deblocks at a temperature of less than about 160.degree. C., and (b) employing as the solvent system, one which is substantially free of any organic solvent which will react with isocyanate groups at the temperature employed to cure said coating.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: October 10, 1989
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Kenneth W. Anderson, Nancy A. Rao, Richard A. Hickner
  • Patent number: 4867854
    Abstract: An improvement is described for a process for the preparation of an epoxy cationic resin from an epoxy resin composition having terminal oxirane groups which includes the step of converting oxirane groups to cationic groups by reacting a nucleophile with at least some of the oxirane groups of the epoxy resin composition wherein an organic acid and water are added during some part of this conversion; wherein the improvement resides in using as the epoxy resin composition a blend of (I) at least one of (A) at least one epoxy-based resin prepared from a diglycidyl ether of a polyether polyol having an average epoxide equivalent weight of from about 350 to about 5,000; or (B) at least one epoxy-based cationic resin prepared from a diglycidyl ether of a polyether polyol having an average epoxide equivalent weight of from about 350 to about 5,000 which diglycidyl ether has been partially capped with a monofunctional capping agent; or (C) a combination of (A) and (B); and (II) at least one different epoxy-based resi
    Type: Grant
    Filed: August 26, 1987
    Date of Patent: September 19, 1989
    Assignee: The Dow Chemical Company
    Inventor: John M. McIntyre
  • Patent number: 4834847
    Abstract: An electrochemical cell and process for the electrolysis of an aqueous solution of an alkali metal halide and the production of a halogenated hydrocarbon comprising an electrolytic cell having a gas depolarized anode and a cathode which can be a dimensionally stable or a gas depolarized cathode wherein the production of an aqueous solution of an alkali metal hydroxide and a halogenated hydrocarbon are accompanied by significantly reduced voltage requirements in the cell.
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: May 30, 1989
    Assignee: The Dow Chemical Company
    Inventor: John M. McIntyre
  • Patent number: 4832937
    Abstract: Electrochemical regeneration in an electrochemical cell of spent scrubbing solutions containing polvalent metal chelates is accomplished without substantial degradation of the chelate by controlling the anolyte pH and maintaining the anode potential of the cell above the oxidation potential of the polyvalent metal chelate but below the oxidation potential of the chelate portion of the polyvalent metal chelate.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: May 23, 1989
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Bruce R. Smith
  • Patent number: 4829104
    Abstract: A method for preparing an advanced epoxy cationic resin from an epoxy-based resin containing oxirane groups by converting at least some of the oxirane groups to cationic groups, wherein the improvement is using as the epoxy-based resin a blend of (I) an epoxy-based resin obtained by reacting in the presence of a suitable catalyst (1) a diglycidylether of a polyetherpolyol, such as a condensation product of dipropylene glycol and epichlorohydrin having an epoxy equivalent weight of 185, optionally (2) a diglycidylether of a dihydric phenol, for example a diglycidyl ether of bisphenol A, (3) a dihydric phenol such as bisphenol A, and optionally (4) a capping agent such as p-nonylphenol and (II) a different cationic epoxy-based resin. Such resin blends can be utilized in cathodic electrodeposition coating systems. Use of the diglycidylether of a polyetherpolyol provides coating compositions with lower viscosity and produces deposition coatings of higher film build than compositions without this component.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: May 9, 1989
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Richard A. Hickner, Nancy A. Rao
  • Patent number: 4826554
    Abstract: The invention is a method for forming a solid polymer electrolyte structure comprising:(a.) forming a mixture of a binder and a plurality of catalytically active, electrically conductive particles;(b.) forming the mixture into a particle containing film;(c.) contacting the film with a fluorocarbon membrane in its thermoplastic form;(d.) contacting the particle-containing film with an electrically conductive, hydraulically permeable matrix, thereby forming a laminate having a membrane on one side, a matrix on another side and a plurality of catalytically active particles therebetween; and(e.) applying sufficient pressure to the laminate to embed at least a portion of the matrix into the membrane.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: May 2, 1989
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Jeffrey D. Birdwell, Bruce R. Smith
  • Patent number: 4824508
    Abstract: The invention is a method for forming a solid polymer electrolyte structure comprising:a. forming a suspension of catalytically active, electrically conductive particles and a liquid such as dibromotetrafluoroethane;b. applying the suspension to at least one side of a fluorocarbon membrane sheet, while said sheet is in its thermoplastic form;c. removing substantially all of the liquid, leaving the particles on the membrane sheet;d. pressing at least a portion of the particles into the membrane sheet;e. contacting the side of the so-treated membrane having the particles on the surface with an electrically conductive, hydraulically permeable matrix;f. subjecting the membrane/matrix combination to a pressure sufficient to embed at least a portion of the matrix into the membrane.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: April 25, 1989
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Bruce R. Smith, Jeffrey D. Birdwell
  • Patent number: 4824533
    Abstract: Symmetrical or 2,3,5,6-tetrahalopyridine is prepared from pentahalopyridine in an electrolytic cell by forming an organic solvent-free emulsion of pentahalopyridine and tetrahalopyridine and by electrolyzing the emulsion.
    Type: Grant
    Filed: August 22, 1986
    Date of Patent: April 25, 1989
    Assignee: The Dow Chemical Company
    Inventors: George E. Ham, Robert D. Spradling, John M. McIntyre
  • Patent number: 4731168
    Abstract: An electrogenerative cell and a process for the oxidation or halogenation of hydrocarbons is disclosed wherein a cell body containing a permselective membrane which divides said cell body into anolyte and catholyte compartments containing a liquid electrolyte consisting repectively of anolyte and catholyte and a porous anode and a porous cathode. Anolyte and catholyte compartments are fed respectively with a mixture of a liquid electrolyte and an unsaturated hydrocarbon and a mixture of a liquid electrolyte and a halogen or oxygen, wherein said electrolytes are fed to said cell at ambient or elevated temperature and pressure. A halogenated or oxygenated hydrocarbon is recovered and electrolytes, unsaturated hydrocarbon, halogen or oxygen are recycled to the cell.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: March 15, 1988
    Assignee: The Dow Chemical Company
    Inventor: John M. McIntyre
  • Patent number: 4726887
    Abstract: A method of converting olefins, preferably butylene or propylene into oxides is disclosed. A metal halide salt, preferably KBr, is introduced into an electrochemical cell wherein the cathode has a gas side preferably supplied with oxygen and operated at a low voltage to suppress hydrogen production.
    Type: Grant
    Filed: December 26, 1985
    Date of Patent: February 23, 1988
    Assignee: The Dow Chemical Company
    Inventor: John M. McIntyre
  • Patent number: 4678601
    Abstract: An electrically conductive polymer-latex composite is described. Organic polymeric material capable of being doped to provide an organic electroconductive material is dispersed in a latex and doped to provide an organic electroconductive polymer-latex composite.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: July 7, 1987
    Assignee: The Dow Chemical Company
    Inventors: George E. Ham, Wuu-Nan Chen, John M. McIntyre
  • Patent number: 4654104
    Abstract: The invention is a method for forming a solid polymer electrolyte structure comprising:(a) heating a fluorocarbon membrane, while it is in its thermoplastic form, to a temperature at which it softens;(b) contacting a plurality of electrically conductive, catalytically active particles with at least a portion of one face of the membrane, while said membrane is in a softened state;(c) subjecting the membrane/particle combination to a pressure sufficient to embed at least a portion of the particles into the membrane;(d) contacting the particulated membrane with an electrically conductive, hydraulically permeable matrix,(e) subjecting the particulated membrane/matrix combination to a pressure sufficient to embed at least a portion of the matrix into the particulated membrane.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: March 31, 1987
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Jeffrey D. Birdwell, Bruce R. Smith
  • Patent number: 4312723
    Abstract: An electrolytic cell and its method of operation is described. The cell comprises an anode, a cathode and iron-containing metals exposed to the interior portions of the cell which are maintained at about the same electrical potential as the cathode. These materials are covered with a protective coating to minimize corrosion during operation of the cell.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: January 26, 1982
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Donald L. Caldwell
  • Patent number: 4279709
    Abstract: Electrodes with porous coatings are produced using an inorganic compound which is soluble in an aqueous solution, as the pore former in the coating. The inorganic pore former may be removed from the coating while the electrode is being used in an electrolytic cell without contaminating the electrolyte. Such electrodes are particularly useful in electrolytic cells, wherein they operate at a significantly lower voltage and have a longer life span than conventional electrodes.
    Type: Grant
    Filed: May 8, 1979
    Date of Patent: July 21, 1981
    Assignee: The Dow Chemical Company
    Inventors: John M. McIntyre, Donald L. Caldwell