Patents Represented by Attorney A. M. Doernberg

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  • Ballistic-resistant article
    Patent number: 4457985
    Abstract: Articles such as vests, helmets and structural elements containing a network of ultrahigh molecular weight, high strength, high modulus polyethylene or polypropylene fibers. The fibers, and especially polyethylene fibers of 15, 20, 25, 30 or more g/denier tenacity, and 300, 500, 1,000, 1,500 or more g/denier tensile modulus impart exceptional ballistic resistance to the articles in spite of the melting points, e.g. 145.degree.-151.degree. C. for the polyethylene fibers and 168.degree.-171.degree. C. for the polypropylene fibers, which are high for these polymers, but substantially lower than the 200.degree. C. or more melting point previously thought necessary for good ballistic resistance.
    Type: Grant
    Filed: February 18, 1983
    Date of Patent: July 3, 1984
    Assignee: Allied Corporation
    Inventors: Gary A. Harpell, Sheldon Kavesh, Igor Palley, Dusan C. Prevorsek
  • Extraction and/or extractive distillation of ethanol from aqueous solutions
    Patent number: 4455198
    Abstract: Ethanol is concentrated from ethanol-water mixtures by extraction or extractive distillation with a solvent which is a cyclic ketone of at least seven carbons or cyclic alcohol of at least eight carbons such a cyclohexylcyclohexanone or cyclohexylcyclohexanol. In the extractive distillation process, a first overheads is produced which can be made to be steam with minimal ethanol content and a second overhead is produced which can be made to be essentially pure ethanol. The preferred solvents are also non-toxic, such that the alcohol can be used for human consumption.
    Type: Grant
    Filed: November 26, 1982
    Date of Patent: June 19, 1984
    Assignee: Allied Corporation
    Inventors: David Zudkevitch, David K. Preston, Stephen E. Belsky
  • Producing modified high performance polyolefin fiber
    Patent number: 4455273
    Abstract: Fibers prepared by spinning, drawing and drying dilute solutions of ultrahigh molecular weight polyethylene or polypropylene are modified by including in the dilute solution a polymeric additive. The polyethylene fibers so prepared have melting points above 140.degree. C. and exhibit improved adherence to matrices, resistance to fibrillation and other advantageous properties. Additives include lower molecular weight polyolefins, oxidized polyolefins, olefin copolymers, polyolefin graft copolymers and polyoxymethylenes.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: June 19, 1984
    Assignee: Allied Corporation
    Inventors: Gary A. Harpell, Sheldon Kavesh, Igor Palley, Dusan C. Prevorsek
  • Mixtures comprising hydrocarbon esters of benzene carboxylic acids and fluorocarbon esters of benzene carboxylic acids and fibers containing the same
    Patent number: 4455349
    Abstract: Tetraesters of pyromellitic dianhydride are disclosed wherein two ester moieties are saturated hydrocarbon groups and two ester moieties are halohydroxyalkyl groups. The compounds may be used as diluents for fluorinated pyromellitates that are useful as soil and water repelling agents. Mixtures formed by dissolving the compounds of this invention and known fluorinated pyromellitates in a common solvent are capable of imparting soil and water repelling properties to various fibers that are essentially equivalent to soil and water repelling properties imparted to such fibers by fluorinated pyromellitates alone. Additionally, the hydrocarbon pyromellitates of this invention may be used alone as water repellents.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: June 19, 1984
    Assignee: Allied Corporation
    Inventors: Oxenrider, Bryce C., Alson K. Price
  • Producing methyl ethers of branched monoolefins
    Patent number: 4454356
    Abstract: Methanol is reacted with branched monoolefins such as isobutylene, or mixtures of hydrocarbons such as mixed C-4's from or in a refinery, in the presence of methanesulfonic acid. A column (10) operation is described wherein methanesulfonic acid (11) and methanol (12) are fed in countercurrent fashion to hydrocarbons (13). Crude product ether is removed as a liquid sidestream (25) above the feed of methanesulfonic acid (11), while hydrocarbons depleted of the reactive branched monoolefins (24) are removed overhead. The methanesulfonic acid suppresses the vapor pressure of methanol relative to product ether.
    Type: Grant
    Filed: October 14, 1982
    Date of Patent: June 12, 1984
    Assignee: Allied Corporation
    Inventors: Divakaran Masilamani, Andiappan K. S. Murthy
  • Process for the activation of nickel electrodes via the electrochemical deposition of selenium and/or tellurium
    Patent number: 4452675
    Abstract: Nickel electrodes having selenium and/or tellurium electrochemically deposited thereon are disclosed. The nickel electrodes of this invention may be employed in primary or secondary alkaline batteries, and said electrodes exhibit improved currents and charges (i.e. with respect to pure nickel electrodes) when said electrodes are employed in primary or secondary batteries.
    Type: Grant
    Filed: October 18, 1982
    Date of Patent: June 5, 1984
    Assignee: Allied Corporation
    Inventors: Divna Cipris, Arthur T. Walsh
  • Solution of a chalcogen-containing polymer and process of forming conducting polymer articles therefrom
    Patent number: 4452727
    Abstract: A polymer solution is formed from a sulfur- or oxygen-containing aromatic polymer solute such as poly(phenylene sulfide) or poly(phenylene oxide), a Lewis Acid solute derivative (dopant) such as arsenic hexafluoride and a liquid halide solvent such as arsenic trifluoride. The solutions are especially useful for casting conductive polymer articles.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: June 5, 1984
    Assignee: Allied Corporation
    Inventors: Jane E. Frommer, Ronald L. Elsenbaumer, Douglass S. Davidson
  • Dialkoxycarbonylmethyleneurethane diynes
    Patent number: 4452995
    Abstract: Polydiacetylene gel compositions, comprised of a polydiacetylene and a gel-forming liquid therefor, are described which undergo a change in color and in physical state to a solution when heated to a predetermined temperature. The gel compositions exhibit hysteresis temperature characteristics which allow the original color change to be maintained and recorded until the solution is cooled below the predetermined temperature. Thus, the gel compositions are useful in temperature-indicating devices for reversibly monitoring a wide range of temperatures. A novel class of polydiacetylene compounds is also described, useful in forming the gel compositions, formed from monomeric diacetylenediol bis(alkoxycarbonylmethylurethanes).
    Type: Grant
    Filed: April 2, 1982
    Date of Patent: June 5, 1984
    Assignee: Allied Corporation
    Inventors: Gordhanbhai N. Patel, Dawn M. Ivory
  • Fluorinated and non-fluorinated siloxy pyromellitates
    Patent number: 4447629
    Abstract: Pyromellitate tetraesters are disclosed that are useful as water repellents. The pyromellitates of this invention characteristically contain two ester moieties wherein said ester moieties contain a fluorinated or saturated hydrocarbon alkyl group. Additionally, pyromellitates of this invention contain two ester moieties which contain siloxyl groups.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: May 8, 1984
    Assignee: Allied Corporation
    Inventors: Bryce C. Oxenrider, David J. Long
  • Oligomer-containing mixtures useful as fiber surface treating agents and processes for the production and use thereof
    Patent number: 4446306
    Abstract: A reaction between pyromellitic dianhydride (PMDA) and less than two moles of fluoroalcohol produces an intermediate with ester, free acid and anhydride groups. Reaction with an oxirane compound such as epichlorohydrin reacts at the acid sites to produce pendant hydroxyls which react with anhydride on adjacent molecules to produce oligomers. Products with fluoroalcohol:PMDA ratios of, for example, about 1:0.6 to about 1:0.85 produce treated fibers with improved retention of oil repellancy, especially when annealed at 100.degree.-130.degree. C.
    Type: Grant
    Filed: May 20, 1982
    Date of Patent: May 1, 1984
    Assignee: Allied Corporation
    Inventor: Bryce C. Oxenrider
  • Room temperature reaction of vanadium-based alloys with hydrogen
    Patent number: 4440737
    Abstract: A method of producing a vanadium-based metal hydride which comprises reacting hydrogen gas at a temperature between about 0.degree. and 100.degree. C. with a vanadium-based binary solid solution alloy having a body-centered cubic structure and having a formula V.sub.1-x M.sub.x, wherein M is a metal selected from the group consisting of manganese, chromium, cobalt, iron, nickel and mixtures thereof and wherein x varies from at least about 2 atom percent up to the solubility limit of cobalt, iron and nickel and up to about 20 mol % of manganese and up to about 40 mol % of chromium in said solid solution alloy is disclosed.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: April 3, 1984
    Assignee: Allied Corporation
    Inventors: George G. Libowitz, James F. Lynch, Arnulf J. Maeland
  • Method of preparing high strength and modulus polyvinyl alcohol fibers
    Patent number: 4440711
    Abstract: Polyvinyl alcohol of molecular weight over 500,000 (i.e. 1,500,000 to 2,500,000) is spun as a dilute solution (2-15%) in a relatively non-volatile solvent such as glycerin. The resultant gel fiber is extracted with a volatile solvent such as methanol and dried. Upon stretching at one or more stages during the process, fibers of tenacity above 10 g/denier and modulus above 200 g/denier (e.g. 18 and 450, respectively) are produced.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: April 3, 1984
    Assignee: Allied Corporation
    Inventors: Young D. Kwon, Sheldon Kavesh, Dusan C. Prevorsek
  • Electrically conducting compositions of doped polyphenylenes and shaped articles comprising the same
    Patent number: 4440669
    Abstract: Electrically conducting doped poly(paraphenylene) compositions, and process of making such compositions, having direct current conductivities of at least 10.sup.-3 ohm.sup.-1 cm.sup.-1, at room temperature, and up to 100 ohm.sup.1 cm.sup.-1 and above; especially wherein the doping agent is a Group IA metal arene, a Group V halide, chlorine, bromine, or a mixture thereof; in particular potassium naphthalene, sodium naphthalene, AsF.sub.5, chlorine, or a mixture thereof. The polymers are useful as electronic devices, as substrates for electroplating, as materials for absorption of solar and of radio frequency radiation, and in general wherever electrical conductivity of the metallic type or of the semiconductor type, and light weight, are desired.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: April 3, 1984
    Assignee: Allied Corporation
    Inventors: Dawn M. Ivory, Granville G. Miller, Ronald R. Chance, Ray H. Baughman
  • Titanium-based body-centered cubic phase alloy compositions and room temperature hydride-forming reactions of same
    Patent number: 4440736
    Abstract: Solid solutions of titanium, a second metal such as niobium, vanadium, and molybdenum and a third metal such as cobalt, germanium, or iron, wherein the second metal is niobium or vanadium and optionally when the second metal is molybdenum, react rapidly at room temperature obviating the need for a high temperature induction period. Solid solutions having formula (Ti.sub.1-x Nb.sub.x).sub.1-y M.sub.y wherein 0.25.ltoreq.x.ltoreq.0.95 and wherein y varies from at least about 0.01 to the solubility limit of M such as cobalt, germanium, or iron in said solution, are also disclosed. Hydrides of solid solution alloys of Ti/Mo/M, Ti/Nb/M and Ti/V/M are also disclosed.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: April 3, 1984
    Assignee: Allied Corporation
    Inventors: Arnulf J. Maeland, George G. Libowitz, George Rak
  • Polydiacetylene gels
    Patent number: 4439346
    Abstract: Polydiacetylene gel compositions, comprised of a polydiacetylene and a gel-forming liquid therefor, are described which undergo a change in color and in physical state to a solution when heated to a predetermined temperature. The gel compositions exhibit hysteresis temperature characteristics which allow the original color change to be maintained and recorded until the solution is cooled below the predetermined temperature. Thus, the gel compositions are useful in temperature-indicating devices for reversibly monitoring a wide range of temperatures. A novel class of polydiacetylene compounds is also described, useful in forming the gel compositions, formed from monomeric diacetylenediol bis(alkoxycarbonylmethylurethanes).
    Type: Grant
    Filed: August 30, 1978
    Date of Patent: March 27, 1984
    Assignee: Allied Corporation
    Inventors: Gordhanbhai N. Patel, Dawn M. Ivory
  • Polycyclic pyromellitates and use thereof on polyesters and polyamides
    Patent number: 4435294
    Abstract: Oligomers containing pyromellitic rings, divalent linking groups, pendant fluoroalkoxy or hydrocarbon alkoxy groups and pendant polar groups of various kinds impart soil repellency to fibers that persists after repeated laundering. An exemplary material is prepared by the reaction of pyromellitic difluoroester/diacid chloride with 1,4-butanediol (the linking group) and 3-chloro-1,2-propanediol (the pendant polar group).
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: March 6, 1984
    Assignee: Allied Corporation
    Inventors: Bryce C. Oxenrider, David J. Long
  • Temperature stable thermotropic poly(ester carbonate) containing high amounts of readily available diols
    Patent number: 4435561
    Abstract: Thermotropic poly(ester carbonates) such as the terephthalate/carbonate of a mixture of hydroquinose, resorcinol, tert-butylhydroquinone and methylhydroquinone. With a major proportion of the more readily available hydroquinone and resorcinol, thermotropic properties (liquid crystallinity in the melt) are observed.
    Type: Grant
    Filed: June 30, 1983
    Date of Patent: March 6, 1984
    Assignee: Allied Corporation
    Inventors: Yu-Chin Lai, Bruce T. DeBona, Dusan C. Prevorsek, Murali K. Akkapeddi
  • Process for increasing the relative viscosity of polycaprolactam with phosphite compound
    Patent number: 4433116
    Abstract: A process for rapidly and substantially decreasing the melt index and increasing the viscosity of polymers of caprolactams during melt processing by forming a molten mixture of the polymer and a phosphite compound and heating the mixture until the desired change in melt index and viscosity are obtained.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: February 21, 1984
    Assignee: Allied Corporation
    Inventors: Theodore Largman, Shaul M. Aharoni
  • Extraction and/or extractive distillation of low molecular weight alcohols from aqueous solutions
    Patent number: 4428798
    Abstract: A process is disclosed for separating low molecular weight alcohols, especially ethanol, from aqueous mixtures. The process involves subjecting alcohol-water mixtures to extraction and/or extractive distillation procedures. Extractive solvents useful for the process of this invention include phenols having at least six carbon atoms and a boiling point between about 180.degree. C. and about 350.degree. C.
    Type: Grant
    Filed: July 26, 1982
    Date of Patent: January 31, 1984
    Assignee: Allied Corporation
    Inventors: David Zudkevitch, Stephen E. Belsky, Preston D. Krautheim
  • Hydriding body-centered cubic phase alloys at room temperature
    Patent number: 4425318
    Abstract: Solid solution of niobium or tantalum and a second metal react rapidly with hydrogen under mild conditions, eliminating the need for a high temperature induction process. Suitable second metals include Al, Co, Cr, Fe, Mn, Mo, Ni, Cu, V, Si, Ge and Ga.
    Type: Grant
    Filed: April 5, 1982
    Date of Patent: January 10, 1984
    Assignee: Allied Corporation
    Inventors: Arnulf J. Maeland, George G. Libowitz, George Rak