Patents Represented by Attorney J. G. Carter
  • Patent number: 4611022
    Abstract: A composition comprising (A) a polyphenol such as bisphenol A, (B) a polymer resulting from polymerizing (1) an alkenyl phenol such as p-isopropenylphenol and (2) a polymerizable ethylenically unsaturated monomer such as 2-ethylhexyl acrylate can be converted to a copolymer modified polycyanate by reaction with a cyanogen halide such as cyanogen chloride in the presence of a base such as triethylamine. These polycyanates can be cured by trimerization in the presence of a suitable catalyst or by copolymerization with an epoxy resin. Epoxy resins can also be prepared from the composition comprising components (A) and (B) by reaction with an epihalohydrin such as epichlorohydrin and subsequent dehydrohalogenation with a basic acting compound such as sodium hydroxide.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: September 9, 1986
    Assignee: The Dow Chemical Company
    Inventor: Robert E. Hefner, Jr.
  • Patent number: 4608313
    Abstract: Coatings are prepared from epoxy resin compositions prepared by reacting an epoxy resin composition containing an aliphatic diepoxide with a dihydric phenol. These coatings are useful as anti-chip coatings for automobiles and as coil coatings.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: August 26, 1986
    Assignee: The Dow Chemical Company
    Inventors: Richard A. Hickner, Kevin A. Owens, Gwendolyn M. Grays
  • Patent number: 4605715
    Abstract: Olefins are polymerized in the presence of, as a catalyst therefor, the catalytic reaction product resulting from heating a mixture of(A) at least one hydrocarbon soluble organomagnesium material;(B) at least one epihalohydrin;(C) at least one reducing halide source; and(D) at least one transition metal (Tm) compound.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: August 12, 1986
    Assignee: The Dow Chemical Company
    Inventor: Gary K. Lund
  • Patent number: 4604317
    Abstract: Curable compositions are disclosed which comprise a polyglycidyl ether such as the triglycidylether of tris(hydroxyphenyl)methane and a halogenated dihydric phenol such as tetrabromobisphenol A. These compositions can be cured by heating in the presence or absence of catalyst for reacting epoxy groups with phenolic hydroxyl groups such as 2-methyl imidazole. These compositions are particularly useful in the preparation of electrical laminates.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: August 5, 1986
    Assignee: The Dow Chemical Company
    Inventors: Jody R. Berman, Christine C. Berkefelt, Dale J. Aldrich
  • Patent number: 4604374
    Abstract: A catalyst for polymerizing olefins is the product resulting from heating in an inert hydrocarbon diluent a mixture of (A) an organomagnesium material, (B) an epihalohydrin, (C) a reducing halide source and (D) a transition metal compound.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: August 5, 1986
    Assignee: The Dow Chemical Company
    Inventor: Gary K. Lund
  • Patent number: 4601994
    Abstract: Supported Ti.sup.III catalysts are prepared by contacting a slurry of a solid inorganic support such as magnesium chloride in a hydrocarbon medium such as Isopar.RTM. E containing a tetravalent titanium compound containing at least two halogen atoms such as titanium tetrachloride with hydroquinone or a substituted hydroquinone.
    Type: Grant
    Filed: June 21, 1985
    Date of Patent: July 22, 1986
    Assignee: The Dow Chemical Company
    Inventor: William M. Coleman, III
  • Patent number: 4602070
    Abstract: An advanced epoxy resin is prepared by reacting in the presence of a suitable catalyst such as ethyltriphenyl phosphonium acetate.acetic acid complex (A) a mixture containing (1) a polyglycidyl ether of a material containing at least two aliphatic hydroxyl groups per molecule such as a diglycidyl ether of a polyoxypropylene glycol and (2) a dicarboxylic acid such as malonic acid with (B) a dihydric phenol such as bisphenol A. These advanced epoxy resins are useful in the preparation of automobile paints, exterior coatings for beverage cans, coil coatings and adhesives.
    Type: Grant
    Filed: July 2, 1985
    Date of Patent: July 22, 1986
    Assignee: The Dow Chemical Company
    Inventors: Michael B. Cavitt, David J. Duncan
  • Patent number: 4600760
    Abstract: Thermosettable compositions comprising an alkenyl phenyl cyanate and at least one of an aromatic polycyanate, a polymaleimide or a polymerizable ethylenically unsaturated aromatic monomer are disclosed.
    Type: Grant
    Filed: April 11, 1985
    Date of Patent: July 15, 1986
    Assignee: The Dow Chemical Company
    Inventor: Robert E. Hefner, Jr.
  • Patent number: 4596861
    Abstract: Advanced epoxy resins are prepared from a liquid diglycidyl ether of bisphenol A and bisphenol A which advanced epoxy resins have an equivalent weight in the range of 3,000 to 3,900 and a weight average molecualr weight of 13,000 to 17,000. When these advanced epoxy resins are formulated into can coating compositions they result in coatings having good wet and dry adhesion.
    Type: Grant
    Filed: May 22, 1985
    Date of Patent: June 24, 1986
    Assignee: The Dow Chemical Company
    Inventors: Pong S. Sheih, Manuel C. Tyler, Jr.
  • Patent number: 4594398
    Abstract: Vinyl ester resins are prepared by reacting a polymerizable unsaturated carboxylic acid-containing compound with an epoxy resin prepared by dehydrohalogenating the reaction product of an epihalohydrin with the reaction product of an aromatic hydroxyl-containing compound and an unsaturated hydrocarbon.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: June 10, 1986
    Assignee: The Dow Chemical Company
    Inventors: Donald L. Nelson, Mary J. Lamont
  • Patent number: 4594291
    Abstract: Relatively high molecular weight epoxy resins cured with conventional curing agents are disclosed wherein the relatively high molecular weight epoxy resin is prepared in the presence of the curing agents. The resultant cured epoxy resin has an improvement in Tg or toughness and the mixture prior to reaction and curing is much easier to apply as a coating or in the preparation of castings, laminates and the like as compared to applications of mixtures of relatively high molecular weight epoxy resins and the curing agents.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: June 10, 1986
    Assignee: The Dow Chemical Company
    Inventors: James L. Bertram, Louis L. Walker, Jody R. Berman, James A. Clarke
  • Patent number: 4587293
    Abstract: A composition is described which thermosets when admixed with a free radical generating catalyst which composition comprises (A) an unsaturated polyester resin or vinyl ester resin, (B) a reactive monomer prepared by reacting (1) an aromatic material containing, per molecule, one polymerizable ethylenically unsaturated group and one group containing an ether linked epoxide group; and (2) a material containing at least one oxyalkylene group and is terminated in a group having at least one hydrogen atom which is reactive with an ether linked epoxide group, and (C) a polymerizable ethylenically unsaturated non-resinous monomer different from Component (B).
    Type: Grant
    Filed: January 23, 1985
    Date of Patent: May 6, 1986
    Assignee: The Dow Chemical Company
    Inventor: Robert E. Hefner, Jr.
  • Patent number: 4585838
    Abstract: The total halide content of epoxy resins is reduced by heating a resin containing halide dissolved in a solvent mixture containing at least one ketone, at least one aromatic hydrocarbon and optionally at least one compound containing at least one aliphatic hydroxyl group in the presence of an alkali metal hydroxide for a time sufficient to reduce the total halide content.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: April 29, 1986
    Assignee: The Dow Chemical Company
    Inventors: Chun S. Wang, Robert L. Bowden, Wuu N. Chen
  • Patent number: 4582892
    Abstract: Epoxy resins are prepared by dehydrohalogenating the reaction product of a polyhydric phenol with an excess of an epihalohydrin in the presence of a quaternary ammonium compound wherein prior to dehydrohalogenation, the excess epihalohydrin is removed and an organic solvent is added and at least a portion of the dehydrohalogenation is conducted in the presence of added quantities of a quaternary ammonium compound.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: April 15, 1986
    Assignee: The Dow Chemical Company
    Inventors: Feng-chih Chang, Michael L. Heather, Robert P. Shirtum, Robert L. Hearn, Jr.
  • Patent number: 4581454
    Abstract: Adducts of aminohydrocarbyl piperazines and urea are prepared in the presence of basic catalysts. These adducts are useful as curing agents for epoxy resins.
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: April 8, 1986
    Assignee: The Dow Chemical Company
    Inventors: Jimmy Myers, William P. Coker
  • Patent number: 4581425
    Abstract: Thermosettable compositions comprising an alkenyl phenyl cyanate and at least one of an aromatic polycyanate, a polymaleimide or a polymerizable ethylenically unsaturated aromatic monomer are disclosed.
    Type: Grant
    Filed: April 11, 1985
    Date of Patent: April 8, 1986
    Assignee: The Dow Chemical Company
    Inventor: Robert E. Hefner, Jr.
  • Patent number: 4575542
    Abstract: Thermosettable compositions are disclosed which are prepared by reacting (A) a pyridine compound containing at least two substituent groups which have at least one hydrogen atom attached to a carbon atom which is attached to the ring or mixture of such pyridines; (B) at least one material having at least two aldehyde groups; and (C) at least one aldehyde containing at least one polymerizable unsaturated group; wherein components (A), (B) and (C) are employed in quantities which provide a mole ratio of (C):(B):(A) of from about 0.25:0.25:1 to about 4:4:1. These thermosettable compositions can be cured by heat and pressure or by homopolymerization in the presence of or by copolymerization with an N,N'-bis-imide. The compositions are useful as light weight fire resistant interior and exterior parts or panels for the aerospace and/or aircraft industry and the like.
    Type: Grant
    Filed: April 23, 1985
    Date of Patent: March 11, 1986
    Assignee: The Dow Chemical Company
    Inventor: Duane S. Treybig
  • Patent number: 4569975
    Abstract: Olefins or mixtures thereof are polymerized in the presence of the product resulting from heating in an inert hydrocarbon diluent a mixture of (A) an organomagnesium material, (B) essentially anhydrous carbon dioxide, (C) a reducing halide source and (D) a transition metal compound.
    Type: Grant
    Filed: March 12, 1985
    Date of Patent: February 11, 1986
    Assignee: The Dow Chemical Company
    Inventors: Calvin P. Esneault, Larry A. Meiske, Ricardo Fuentes, Jr.
  • Patent number: 4558116
    Abstract: Epoxy resins low in aliphatic halogen are prepared by reacting a polyhydric phenol with an excess of an epihalohydrin in the presence of a secondary alcohol and an aqueous solution of an alkali metal hydroxide until from 45 to <70 percent of the phenolic hydroxyl groups have reacted; removing unreacted polyhydric phenol therefrom until less than 4% total phenolic hydroxyl remains in the reaction product; dehydrohalogenating the resultant intermediate product and recovering the epoxy resin therefrom.
    Type: Grant
    Filed: March 4, 1985
    Date of Patent: December 10, 1985
    Assignee: The Dow Chemical Company
    Inventors: Walter L. Wernli, Robert P. Shirtum
  • Patent number: 4555563
    Abstract: Imide functional polyphenols are prepared by reacting an excess of a phenol with an unsaturated diimide which is prepared by reacting an unsaturated polycycloaliphatic dicarboxylic acid anhydride with a diamine.These materials are useful in the preparation of castings, coatings, laminates and the like.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: November 26, 1985
    Assignee: The Dow Chemical Company
    Inventors: Robert E. Hefner, Jr., Mary N. White