Patents Represented by Attorney J. B. Guffey
  • Patent number: 4940754
    Abstract: Opaque, thermoplastic molding compositions comprising a grafted rubber phase and a matrix phase comprising styrene, acrylonitrile, and from 1 to 18 percent of a lower alkyl methacrylate and having improved colorability are disclosed.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: July 10, 1990
    Assignee: The Dow Chemical Company
    Inventors: Todd T. Lensmire, Robert J. Donald, Sheldon G. Turley, Bruce J. Tallmadge
  • Patent number: 4452375
    Abstract: The use of organic solvent-based coating compositions in the preparation of plastic coated steel feedstock for use in the manufacture of retortable draw-redraw food and beverage cans is substantially reduced or eliminated by using as such can feedstock a laminated or extrusion coated steel sheet having adhered to at least one, and preferably to both, major planar surface(s) thereof a layer of an adhesive synthetic thermoplastic resin composition having a crystalline melting point of at least about 250.degree. F. and comprising graft copolymer of high density polyethylene with an ethylenically unsaturated carboxylic acid monomer.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: June 5, 1984
    Assignee: The Dow Chemical Company
    Inventor: Stanley A. Marcus
  • Patent number: 4452374
    Abstract: The use of organic solvent-based coating compositions in the preparation of coated steel feedstock for use in the manufacture of draw-redraw food and beverage cans is eliminated by using as such can feedstock a laminated or extrusion coated steel sheet (e.g., such as electrolytic chrome/chrome oxide coated steel) having adhered to both major planar surfaces thereof an irradiated multilayered synthetic thermoplastic resin coating comprising:(1) an adhesive synthetic thermoplastic resin inner layer which is composed of at least a major proportion of a normally solid random copolymer of ethylene with from about 1 to about 30 weight percent, based upon the weight of such copolymer, of an ethylenically unsaturated carboxylic acid monomer and which is bonded directly to the surface of said steel sheet and(2) an outer layer of a synthetic thermoplastic polymer resin which has a crystalline melting point of at least about 250.degree. F. and which is adhered to said adhesive resin inner layer.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: June 5, 1984
    Assignee: The Dow Chemical Company
    Inventors: Martin K. Hitchcock, Craig W. Potter, Floyd E. Romesberg
  • Patent number: 4450977
    Abstract: The use of organic solvent-based coating compositions in the preparation of coated steel feedstock for use in the manufacture of retortable draw-redraw food and beverage cans is eliminated (A) by using as such can feedstock a laminated or extrusion coated steel sheet comprising a steel sheet material (e.g., such as electrolytic chrome/chrome oxide coated steel) having adhered to both major planar surfaces thereof a multilayered synthetic thermoplastic resin coating comprising (1) an adhesive synthetic thermoplastic resin inner layer (e.g., such as a layer of a normally solid random ethylene/acrylic acid copolymer) bonded directly to the surface of said steel sheet material and (2) an outer layer of a synthetic thermoplastic polymer resin which has a crystalline melting point of at least about 250.degree. F.
    Type: Grant
    Filed: April 2, 1981
    Date of Patent: May 29, 1984
    Assignee: The Dow Chemical Company
    Inventors: Lyle W. Colburn, Craig W. Potter, Floyd E. Romesberg
  • Patent number: 4449014
    Abstract: Plastic/metal laminates (such as, for example, plastic coated cable shielding or armoring tapes) having improved high and/or low temperature adhesion to various olefin polymer substrates (such as, for example, cable jacketing resins) are provided which comprise at least one metallic substrate having directly adhered to at least one surface thereof a first thermoplastic polymer layer of a random copolymer of ethylene with an ethylenically unsaturated carboxylic acid monomer and having adhered to said first polymer layer a second thermoplastic polymer layer comprising a polymer blend of (a) either the same or a different random copolymer of ethylene with an ethylenically unsaturated carboxylic acid as used in said first polymer layer and (b) at least one different ethylenic olefin polymer resin which is not a random ethylene/unsaturated carboxylic acid copolymer.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: May 15, 1984
    Assignee: The Dow Chemical Company
    Inventor: Richard H. Brezinsky
  • Patent number: 4416937
    Abstract: Polymer blends are provided which are characterized by good processability on conventional extrusion equipment to provide films having excellent adhesion to various substrates while still exhibiting good non-blocking properties during film manufacture, storage, shipment and use. Such blends comprise, based upon the total blend weight, from 5 to about 90 weight percent of a high melt index adhesive resin; from about 5 to about 90 weight percent of a relatively low melt index adhesive resin; and from about 5 to about 70 weight percent of non-adhesive resin having a melt index of from about 3 to about 10.
    Type: Grant
    Filed: March 8, 1983
    Date of Patent: November 22, 1983
    Assignee: The Dow Chemical Co.
    Inventor: Bruce A. Metzger
  • Patent number: 4415367
    Abstract: Cement slurries comprising (a) iron (II) sulfate, or hydrate thereof, (b) aluminum sulfate, or a hydrate thereof, (c) a hydraulic cement comprising calcium hydroxide or a hydrolyzable calcium oxide (e.g., a Portland cement), and (d) water, are described. These cement slurries are pumpable and thixotropic and have particular utility in cementing pipe into the borehole of a petroleum well.
    Type: Grant
    Filed: September 18, 1978
    Date of Patent: November 15, 1983
    Assignee: The Dow Chemical Company
    Inventor: Erik B. Nelson
  • Patent number: 4415366
    Abstract: A foamed, thixotropic hydraulic cement slurry and method of using same in cementing subterranean voids. This lightweight cement slurry is particularly useful for cementing in oil or gas wellbores penetrating a weak underground formation which will be broken by cement slurries of ordinary density.
    Type: Grant
    Filed: September 21, 1982
    Date of Patent: November 15, 1983
    Assignee: The Dow Chemical Company
    Inventor: Ward L. Copening
  • Patent number: 4386165
    Abstract: Extruded styrenic polymer foams having improved flammability characteristics are obtained when using volatile fluid blowing agents by incorporating therein a small amount (e.g., from about 0.03 to about 2 weight percent based on polymer) of a waxy material in conjunction with at least one conventional non-waxy halogenated flame retarding agent.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: May 31, 1983
    Assignee: The Dow Chemical Company
    Inventor: Kyung W. Suh
  • Patent number: 4265977
    Abstract: Paper coating compositions having an improved combination of properties are prepared by admixing, in the normal proportions and by conventional techniques, one or more conventional paper coating pigments with a particular type of synthetic polymer latex. In such compositions, the particular latex employed is alkali-sensitive and is prepared by emulsion polymerizing (A) from about 10 to about 90 parts by weight of a monomer mixture comprising, based upon the weight of such monomer mixture, (1) from about 10 to about 60 weight percent of an ethylenically unsaturated carboxylic acid monomer and (2) from about 40 to about 90 weight percent of a copolymerizable monoolefin compound in the presence of (B) from about 10 to about 90 parts by weight, on a polymer solids basis, of a copolymer latex comprising a monovinylidene aromatic monomer such as styrene and an open-chain aliphatic conjugated diene such as butadiene.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: May 5, 1981
    Assignee: Asahi-Dow Limited
    Inventors: Takayuki Kawamura, Kichiya Tazaki, Takashi Sakakiyama, Toshio Hasegawa
  • Patent number: 4112207
    Abstract: Polymers, such as butadiene copolymers and isoprene copolymers, having pendant unsaturated tetra-aliphatic quaternary nitrogen moieties, such as those derived from acrylic esters and acrylamides are useful as water-soluble or inherently water-dispersible curable coatings such as protective and/or decorative coatings, paper coatings, textile fiber coatings, printing plates, photo-curable imagable materials useful as photo-resists, lithographic plates, etc., and the like. Such coatings are curable with light, with high energy radiation and with heat in the presence of free radical catalysts to form insoluble, crosslinked coatings.
    Type: Grant
    Filed: October 29, 1976
    Date of Patent: September 5, 1978
    Assignee: The Dow Chemical Company
    Inventor: Giffin D. Jones