Patents Assigned to E
  • Process for making a fluoroelastomer gelling agent preparation of 1,3,5-tris-(3,3-difluoro-2-propenyl)-s-triazine-2,4,6-(1H,3H,5H)-trione
    Patent number: 4211868
    Abstract: Hexafluorotriallylisocyanurate is prepared by reacting 1,1-difluoro-1,3-dibromopropane with cyanuric acid in the presence of one or more alkali or alkali earth metal inorganic bases or with alkali metal salts of cyanuric acid.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: July 8, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John P. Erdman
  • Photographic silver halide element with opaque backing layer
    Patent number: 4211837
    Abstract: Removable opaque backing layers for photographic silver halide elements are described. The opaque backing layer contains carbon black and a scavenging agent for impurities of the carbon black selected from fine-rain photosensitive silver halides, silver nitrate, and halides of iron, zinc and mercury. The scavenger prevents the impurities from fogging the photographic silver halide emulsion layers of the elements.
    Type: Grant
    Filed: October 1, 1976
    Date of Patent: July 8, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ralph K. Blake, James G. Morgan, David W. Woodward
  • Thermoplastic powder coating systems
    Patent number: 4211691
    Abstract: A thermoplastic powder coating composition is provided, comprising particles of polymeric material comprising a mixture of polymer (A) and polymer (B),polymer (A) and polymer (B) being selected from the group consisting of polymer of ethylenically unsaturated monomer, alkyd, polyester, and polyester urethane,one of either polymer (A) or polymer (B) containing an average of about 0.9-1.1 reactive groups per molecule and the other of polymer (A) or polymer (B) containing an average of 1-10 reactive groups per molecule,the reactive groups on polymer (A) being coreactive in a condensation reaction with the reactive groups on polymer (B), andpolymer (A) and polymer (B) are compatible.
    Type: Grant
    Filed: November 6, 1978
    Date of Patent: July 8, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Emerson B. FitzGerald, Walter C. Meyer
  • Formaldehyde stabilization of acrylonitrile against color
    Patent number: 4211722
    Abstract: A process for stabilizing acrylonitrile against color comprising adding thereto a color-inhibiting amount of formaldehyde. A solution composition comprising acrylonitrile and a color-inhibiting amount of formaldehyde.
    Type: Grant
    Filed: March 7, 1979
    Date of Patent: July 8, 1980
    Assignee: E. I. Du Pont de Nemours & Co.
    Inventor: Robert A. Smiley
  • Polyisocyanate compositions
    Patent number: 4211804
    Abstract: Moisture-cure of a polyurethane prepolymer based on an aliphatic diisocyanate is readily accomplished when a prepolymer is first made from a polyhydroxy compound and an isocyanate group-terminated adduct of the aliphatic diisocyanate with a monosecondary or disecondary diamine obtained by reaction of an aliphatic diamine with an activated monoethylenic compound. Tetravalent organotin compounds are particularly good catalysts for the moisture cure. Moisture-curable polyurethane compositions of the present invention are useful in polyurethane coatings, especially for decorative surfaces, such as flooring.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: July 8, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Donald F. Brizzolara
  • Method of producing cross-linked polymeric images
    Patent number: 4211561
    Abstract: The invention is directed to a process for producing cross-linked polymeric images on a substrate employing an oxygen-insensitive silver halide system to obtain camera-speed imaging with good resolution of the resulting image. The process comprises imagewise exposing a photosensitive layer containing dispersed silver halide in operative association with a multifunctional hydrophilic polymeric coupler, developing the exposed layer with a multifunctional developing agent, and removing the undeveloped, noncross-linked areas by washing with a solvent.
    Type: Grant
    Filed: December 8, 1978
    Date of Patent: July 8, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Louis Plambeck, Jr.
  • Hair-waving device
    Patent number: 4211245
    Abstract: A hair-waving device is disclosed, which is composed of an axonic body (e.g. a cylinder or a cone) on the surface of which a helical groove is formed. The helical groove communicates with a straight short groove in an axial direction across which a hair-clamping strap is arranged removably. A helical clip comprised of a single helix coil serves for snappingly engaging the free end of the strand of hair concerned.
    Type: Grant
    Filed: October 5, 1978
    Date of Patent: July 8, 1980
    Assignee: Coiffeurs i Coppola, di Aldo e Antonio Coppola, s.n.c.
    Inventors: Aldo Coppola, Antonio Coppola
  • Adhesive-bearing metal sheet with photopolymerizable layer
    Patent number: 4210712
    Abstract: Adhesive coated metal sheet, e.g., steel, aluminum, bearing an adhesive layer comprising an ethyl acrylate, methyl methacrylate and acrylic acid copolymer; styrene and maleate ester copolymer, aqueous colloidal silica, and aqueous latex of a self-curing interpolymer. Pigments, e.g., ferric oxide, and antifoaming compounds can be present in the adhesive layer which is useful in adhering aqueous soluble photopolymerizable layers to the support. The elements formed are useful for printing.
    Type: Grant
    Filed: June 14, 1978
    Date of Patent: July 1, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Stanley H. Munger, Herbert J. Pine
  • Silver halide emulsion containing tetrathiocino diisothiazoles as antifoggers
    Patent number: 4210716
    Abstract: Compounds of the general formula: ##STR1## wherein X is cyano or ##STR2## Q is OR.sub.1 or --NR.sub.2 R.sub.3 ; R.sub.1 is hydrogen or alkyl of 1-4 carbon atoms, R.sub.2 is hydrogen or methyl, and R.sub.3 is hydrogen or alkyl of 1-4 carbon atoms, are incorporated into light sensitive silver halide emulsions to improve their sensitometric characteristics.
    Type: Grant
    Filed: January 31, 1979
    Date of Patent: July 1, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John H. Bigelow
  • Arrangement and process for activating and arresting the operation of a heat-forming machine
    Patent number: 4209957
    Abstract: An improved process and heating arrangement for actuating and arresting a heat-forming machine for producing deep drawn containers made of thermoplastic foil band material. The foil band material is paid out in stepwise fashion from one or more storage rollers and is then processed along a process path along which there are arranged in downstream fashion: a heating arrangement, a molding arrangement, a filling arrangement, a stamping arrangement and a driving mechanism. Control circuit means are operatively connected to all of the afore-recited arrangements. The heating arrangements includes heating elements for heating the foil band material to the molding temperature. Screening plates are slidably mounted in the heating arrangement between the foil band material and the heating elements.
    Type: Grant
    Filed: October 10, 1978
    Date of Patent: July 1, 1980
    Assignee: Ste d'Application Plastique, Mecanique et Electronique Plastique-Mecaniqu e
    Inventor: Rene Utzmann
  • Insecticidal carbamates
    Patent number: 4210668
    Abstract: Insecticidal and nematicidal carbamates such as 2-[N-methyl-N-[N-methyl-N-[(1-methylthioethylidene)aminooxycarbonyl]aminot hio]aminocarbonyloxy]benzoic acid esters and amides exhibit increased residual insecticidal and nematicidal activity and reduced cotton phytotoxicity.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: July 1, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James V. Hay
  • Polyvinyl butyral compositions
    Patent number: 4210705
    Abstract: Plasticized polyvinyl butyral resins having improved impact resistance in glass laminates through the incorporation of metal salts of neo decanoic acid.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: July 1, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Harold K. Inskip
  • Vitamin B.sub.12 derivative suitable for radiolabeling
    Patent number: 4209614
    Abstract: Radiolabeled vitamin B.sub.12 derivatives having the formula ##STR1## wherein R is hydrogen or alkyl of 1 to 3 carbon atoms; n is 0, 1, 2, 3 or 4; and the asterisk (*) indicates tagging with a radioisotope, are useful as tracers in radioassays.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: June 24, 1980
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Jack Bernstein, Ravi K. Varma, B. Richard Vogt, Frank L. Weisenborn
  • Correlation arrangements
    Patent number: 4209785
    Abstract: A correlator arrangement for a radar fuze (FIG. 1) in which the outgoing signal is modulated with a reference code and the incoming echo correlated with the code to pick out the signal. To reduce the effect of Doppler frequency modulation there are means 15-18 to reduce the frequency of signals outside a predetermined frequency range to bring them within that range.
    Type: Grant
    Filed: March 1, 1979
    Date of Patent: June 24, 1980
    Assignee: E M I Limited
    Inventor: Eric L. C. White
  • Low silver coating weight, high speed films having two similar emulsion layers
    Patent number: 4209329
    Abstract: The silver halide coating weight of a lithographic element can be reduced by ca. 40% by coating two layers of gelatino-silver halide emulsion on a support, and dividing a speed-adjusting polyoxyethylene compound unequally between the two layers.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: June 24, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Donald Lohner
  • Hydrogenation of butadienepolyperoxide to unsaturated diols
    Patent number: 4209651
    Abstract: A process for the hydrogenation of butadienepolyperoxide in a suitable solvent, e.g., tetrahydrofuran, at temperatures of 75.degree.-110.degree. C. and pressure above 2000 psia by contacting the butadienepolyperoxide and hydrogen in the presence of metallic silver. The process produces 1-butene-3,4-diol and 2-butene-1,4-diol.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: June 24, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William W. Prichard
  • Straight edge blade for installation on an earth moving bucket
    Patent number: 4208815
    Abstract: A straight edge for an earth-moving bucket has pockets on a plate which engage the bucket teeth. The plate extends back to overlap the bottom of the bucket. The straight edge is held firm by bolts through the plate and bucket. The straight edge is no wider than the bucket so that it can function as a digging edge. The straight edge is installable by a single person in a short period of time and without assistance.
    Type: Grant
    Filed: June 9, 1978
    Date of Patent: June 24, 1980
    Assignees: Julius Ralph Yunker, Jerrold Ralph Yunker, Charles E. Michael
    Inventors: Julius R. Yunker, Jerrold R. Yunker
  • Resistors and compositions therefor
    Patent number: RE30313
    Abstract: Powder compositions for producing high resistivity resistors capable of withstanding high voltage surges without large changes in resistivity, said compositions comprising finely divided pyrochlore-related oxides, lead glasses and metal titanates. Alternately to comprising titanates, the compositions may comprise metal titanate precursors such as crystallizable glasses capable of forming metal titanates upon being heated or titanium oxide plus a glass which react to form metal titanates.
    Type: Grant
    Filed: December 20, 1977
    Date of Patent: June 24, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Peter F. Carcia
  • Red rose seedling named Hiltaco
    Patent number: PP4559
    Abstract: A red floribunda rose for greenhouse culture for the production of cut flowers, this new plant being characterized by a very free growth habit and good winter productivity, the lustrous red color of its blooms with excellent keeping tendencies, the much reduced occurrence of blind wood, and the strong resistance of its foliage to mildew.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: July 1, 1980
    Assignee: E. G. Hill Co., Inc.
    Inventor: Robert G. Jelly
  • Novel elastomeric graft copolymers
    Patent number: RE30322
    Abstract: 6-Nylons and 12-nylons having primary amino end-groups and an average degree of polymerization of about 5-60 are grafted onto elastomeric trunk polymers having anhydride groups, vicinal carboxylic groups, or carboxylic groups adjacent to alkoxycarbonyl groups by heating a mixture of the nylon and the trunk polymer, preferably under high shear conditions for about 1 minute or less to 30 minutes or more above the melting temperature of the nylon. The resulting elastomeric graft polymers are suitable for fabricating into a variety of articles, such as, for example, wire jacketing, hose, belts, seals, gaskets, and low pressure tires.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: July 1, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Clarence F. Hammer, Harold K. Sinclair