Patents Assigned to Suntech, Inc.
  • Patent number: 4273898
    Abstract: A novel composition comprises a block copolymer of a polyetheramide, e.g., poly-(4,7-dioxadecamethylene adipamide) and a random copolymer resulting from the polymerization of an ether free polyamide precursor, e.g., hexamethylenediamine salt of adipic acid and a precursor of a polyetheramide. The block copolymer can be more easily processed into useful articles such as fiber and film because it differs structurally from a corresponding block copolymer of homopolymers of polyetheramide and polyamide.
    Type: Grant
    Filed: September 6, 1979
    Date of Patent: June 16, 1981
    Assignee: Suntech, Inc.
    Inventors: Edward M. Kohn, Stephen L. Nickol, Robert M. Thompson
  • Patent number: 4272362
    Abstract: Oxygen compounds are removed, e.g., by solvent extraction, from a shale oil prior to its hydrogenation. As a result, the amount of hydrogen consumed during subsequent hydrogenation to achieve a given level of nitrogen for the shale oil is less than that which would occur if the oxygen compounds were not removed from the shale oil. Removal of the nitrogen is necessary to avoid adverse effects on subsequent shale oil processing steps such as catalytic cracking.
    Type: Grant
    Filed: February 1, 1980
    Date of Patent: June 9, 1981
    Assignee: Suntech, Inc.
    Inventors: Abraham Schneider, Elmer J. Hollstein, Edward J. Janoski, Edward G. Scheibel
  • Patent number: 4271088
    Abstract: In a cyanoalkylation process involving the reaction of a cyanoalkene compound such as acrylonitrile with a compound containing a labile hydrogen such as ethylene glycol, to form a cyanoalkylated product such as 3,3'-ethylenedioxybis(propionitrile), the conversion of the cyanoalkene is limited to about 60 to 96%, preferably 70 to 85%, whereby the formation of byproducts is reduced from that which is obtained when the conversion of the cyanoalkene is greater than about 96%.
    Type: Grant
    Filed: May 18, 1979
    Date of Patent: June 2, 1981
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., Wesley R. Cherry
  • Patent number: 4271089
    Abstract: In a cyanoalkylation process involving the reaction of a cyanoalkene compound such as acrylonitrile with a compound containing a labile hydrogen such as ethylene glycol, to form a cyanoalkylated product such as 3,3'-ethylenedioxy-bis(propionitrile), the reaction is carried out in the presence of cyanoalkylated product in addition to the cyanoalkylated product which is formed in situ by reaction of the reactants. High yields of cyanoalkylated product and low formation of by-products are obtained.
    Type: Grant
    Filed: July 5, 1979
    Date of Patent: June 2, 1981
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., Wesley R. Cherry
  • Patent number: 4260808
    Abstract: Equimolar amounts of phenol and formaldehyde may be prepared from oxygen and toluene. The catalytic oxidation of toluene, when carried out in the presence of acetic anhydride, forms phenyl acetate and methylene diacetate. Pyrolysis of these two intermediates yields phenol and formaldehyde.Significant improvements in this process are achieved when the first stage of the reaction is carried out in the presence of MoO.sub.3.In a further embodiment of this invention it has been found that Group VIII dithiosemibenzil compounds, particularly nickel dithiosemibenzil, serves as a superior promoter for the toluene oxidation reaction.In still a further embodiment of this invention it has been found that persulfate promoters such as potassium persulfate, persulfuric acid, or Caro's dry acid are particularly effective promoters for the toluene oxidation reaction.In a like manner, hydroquinone or resorcinol may be obtained from cresyl acetates.
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: April 7, 1981
    Assignee: Suntech, Inc.
    Inventors: James E. Lyons, George Suld, Robert W. Shinn
  • Patent number: 4252549
    Abstract: In crystallization units such as wax crystallization units where a scraped surface double pipe heat exchanger type chiller is used, the improvement of replacing the scraped surface chiller tube with a porous tube to provide positive flow of coolant through the tube wall to prevent crystal deposition on the process side of the tube, whereby crystal degradation is eliminated and increased filter rate is obtained.
    Type: Grant
    Filed: May 31, 1979
    Date of Patent: February 24, 1981
    Assignee: Suntech, Inc.
    Inventors: Richard W. Chaunce, Thomas J. McGinley
  • Patent number: 4248661
    Abstract: During the labeling of a vial, mislabeling can occur. The unwanted label is cleanly and economically removed by forcing the vial through a novel collet-cutter. The cutter has at least two cutting edges and two slots. The slots permit expansion of the diameter of the cutting edges during the passage of a vial. At least one of the edges of the slots is outwardly sharpened. Further, its cutting edges are at an angle to the incoming vial and have an internal diameter whereby the label is removed completely and cleanly when the vial is forced through the cutter.
    Type: Grant
    Filed: September 6, 1979
    Date of Patent: February 3, 1981
    Assignee: Suntech, Inc.
    Inventors: Arnold M. Bleiman, Gordon A. Russell
  • Patent number: 4247478
    Abstract: In the process of hydrogenating an aromatic dinitrile to the corresponding di-primary amine in the presence of a catalyst, the improvement of using as catalyst a cobalt catalyst promoted with rhodium where the weight ratio of rhodium to cobalt is 1.0 or less.
    Type: Grant
    Filed: November 16, 1979
    Date of Patent: January 27, 1981
    Assignee: Suntech, Inc.
    Inventor: Howard P. Angstadt
  • Patent number: 4237310
    Abstract: The oxidation of methyl benzenes, such as toluene, with air or oxygen in the presence of acetic anhydride and sulfuric acid catalyst to form a phenolic acetate and methylene diacetate may be carried out under mild conditions when small amounts of benzaldehyde are added to the reaction.The resulting acetates may then be pyrolyzed to yield phenolic compounds and formaldehyde, respectively.
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: December 2, 1980
    Assignee: Suntech, Inc.
    Inventors: George Suld, James E. Lyons, Robert W. Shinn
  • Patent number: 4237309
    Abstract: The oxidation of methyl benzenes with air or oxygen in the presence of acetic anhydride, benzaldehyde and an acid catalyst under mild reaction conditions yields a phenolic acetate and formaldehyde or paraformaldehyde when the ratio of acetic anhydride to methyl benzene is adjusted to provide the selective formation of the phenolic acetate and formaldehyde or paraformaldehyde. In this process, it is essential that the flow of air or oxygen through the reaction medium be maintained at a sufficient rate to provide for the continuous removal of formaldehyde as it is formed. The formaldehyde may then be recovered in the form of paraformaldehyde.
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: December 2, 1980
    Assignee: Suntech, Inc.
    Inventors: James E. Lyons, George Suld, Robert W. Shinn
  • Patent number: 4235714
    Abstract: Semipermeable membranes useful in membrane separation processes are formed from a hydrophilic polyamide which is a block copolymer of nylon and a poly(dioxa-amide) such as poly(4,7-dioxadecamethylene adipamide).
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: November 25, 1980
    Assignee: Suntech, Inc.
    Inventors: Robert M. Thompson, David C. White
  • Patent number: 4235821
    Abstract: In the process of hydrogenating aliphatic nitriles to primary amines whereby the nitrile is hydrogenated in a solvent system containing added ammonia using a cobalt or ruthenium catalyst, the improvement of employing an ether as solvent and carrying out the hydrogenation in the presence of water in an amount of from about 5% to about 15% by volume of the ether solvent whereby the rate of reaction is increased, and selectivity to primary amine products is increased.
    Type: Grant
    Filed: February 1, 1979
    Date of Patent: November 25, 1980
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., William J. Murtaugh, Richard E. Mitchell
  • Patent number: 4231858
    Abstract: Whole crude shale oil is contacted with a suitable catalyst, e.g., cobalt molybdate on alumina, and hydrogen within a temperature range of about 600.degree. F.-850.degree. F. and a pressure range of about 200 psig-5000 psig until a substantial amount of nitrogen compounds contained in the oil are converted to at least basic nitrogen compounds. Hydrogen consumption is high, about 700-3000 SCF/Bbl of fresh oil charged. The contacted oil, containing basic nitrogen compounds in the oil, formed by the hydrogen contacting, is reacted with dry HCl and resulting reaction product is removed from the oil. The reaction product can be converted into hydrogen and HCl for use in the process. As a result of the severe hydrogen contacting and the HCl treatment, a major amount of the whole crude shale oil can be converted to jet fuel.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: November 4, 1980
    Assignee: Suntech, Inc.
    Inventors: Walter H. Seitzer, Abraham Schneider
  • Patent number: 4229612
    Abstract: The removal of color bodies from an olefinic or saturated endo-endo hexacyclic homodimer of norbornadiene or mixtures thereof is accomplished by the use of a serpentine clay. Also acid bentonite clay or a montmorillonite clay can be used to remove the color bodies from the saturated dimer. The saturated dimer has a high density and a high heat of combustion making it useful as a missile fuel. Removal of the color bodies avoids possible catalyst poisoning in the hydrogenation of the olefinic to the saturated dimer. Also removal of the color bodies from the saturated dimer eliminates the possible problem of a material precipitating out on engine turbine blades and causing maintenance or operational problems.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: October 21, 1980
    Assignee: Suntech, Inc.
    Inventors: Lewis W. Hall, Jr., David L. Kerr, Elmer J. Hollstein, Harry K. Myers, Jr., Abraham Schneider
  • Patent number: 4227012
    Abstract: Oxidation of methyl benzenes with air or oxygen to form a phenolic acetate and formaldehyde or methylene diacetate may be carried out in the presence of acetic acid, phosphorus pentoxide, benzaldehyde and an acid catalyst. The resulting acetates may then be pyrolyzed to yield phenolic compounds and formaldehyde, respectively.
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: October 7, 1980
    Assignee: Suntech, Inc.
    Inventors: George Suld, James E. Lyons, Robert W. Shinn
  • Patent number: 4225728
    Abstract: Equimolar amounts of vinyl acetate and phenol may be prepared by oxidation of ethyl benzene. The catalytic oxidation, of ethyl benzene, when carried out in the presence of acetic anhydride, forms phenyl acetate and ethylidene diacetate. Pyrolysis of these two intermediates yields vinyl acetate and phenol.In a further embodiment of this invention it has been found that persulfate promoters such as potassium persulfate, persulfuric acid, or Caro's dry acid are particularly effective promoters for this oxidation reaction.
    Type: Grant
    Filed: November 3, 1978
    Date of Patent: September 30, 1980
    Assignee: Suntech, Inc.
    Inventors: James E. Lyons, George Suld, Robert W. Shinn
  • Patent number: 4225735
    Abstract: Isomerization of a liquid, saturated endo-endo norbornadiene hexacyclic dimer involves the use of a catalytic amount of acidic alumina or a montmorillonite. The resulting isomeric product is solid, at ambient temperature, and can be used as a missile fuel.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: September 30, 1980
    Assignee: Suntech, Inc.
    Inventors: Lewis W. Hall, Jr., John D. Tice, Harry K. Myers, Jr., Abraham Schneider
  • Patent number: 4222961
    Abstract: A process for the hydrogenation of aromatic dinitriles to the corresponding cycloaliphatic aminomethyl compounds by(1) hydrogenating the nitrile in an ether solvent containing water and ammonia using nickel or cobalt as catalyst,(2) removing by-products from the aromatic diamine thus produced,(3) subjecting the aromatic diamine to hydrogenation with a ruthenium catalyst in an aqueous solvent system devoid of ammonia and(4) isolating the cycloaliphatic diamine product.
    Type: Grant
    Filed: February 1, 1979
    Date of Patent: September 16, 1980
    Assignee: Suntech, Inc.
    Inventors: Walter A. Butte, Jr., William J. Murtaugh, Howard P. Angstadt
  • Patent number: 4222800
    Abstract: The endo-endo olefinic hexacyclic dimer of 2,5-norbornadiene is isomerized using an acidic alumina catalyst. The isomerization temperatures ranges from between about an ambient temperature to about 300.degree. C. The isomerized product, after hydrogenation, can be used as a high density missile fuel.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: September 16, 1980
    Assignee: Suntech, Inc.
    Inventors: Harry K. Myers, Jr., Abraham Schneider
  • Patent number: 4220606
    Abstract: Perfluorinated polycyclic hydrocarbons may be produced in high yield by a three-stage process comprising contacting a cyclic hydrocarbon such as an alkyladamantane with a fluoride of silver, manganese, sulfur or the like under varying reaction conditions, generally in the liquid state, to provide a partially fluorinated cyclic hydrocarbon. This fluorination is followed by a second stage vapor phase reaction with a fluoride of cobalt or the like at temperatures generally just above the boiling point of the material to yield highly fluorinated cyclic compounds, followed by a third stage reaction with the same reagent at substantially higher temperatures to provide the desired perfluorinated material. Alternatively, the partially fluorinated material for use in the second stage may be derived from known sources, using any known partially fluorinated cyclic hydrocarbon.In a further embodiment, a fluidized bed reactor may be substituted for the second and third vapor phase stages described above.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: September 2, 1980
    Assignee: Suntech, Inc.
    Inventor: Robert E. Moore