Patents Assigned to Suntech, Inc.
  • Patent number: 4504672
    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 5, 1980
    Date of Patent: March 12, 1985
    Assignee: Suntech, Inc.
    Inventors: James E. Lyons, George Suld, Robert W. Shinn
  • Patent number: 4388408
    Abstract: A clarified slurry oil coker feedstock is subjected to absorption chromatography and ultraviolet light adsorptivity and the results are correlated to determine the suitability of the feedstock for electrode grade coke.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: June 14, 1983
    Assignee: Suntech, Inc.
    Inventors: Herbert P. Sien, Thomas J. McGinley
  • Patent number: 4375361
    Abstract: A process for converting Udex raffinate to a high octane fuel component by mild, liquid phase oxidation to a product of moderate to low acidity, distilling off a neutral oxidate, esterifying the acidic residue to a neutral product and combining the neutral oxidate and the esterified portion.
    Type: Grant
    Filed: March 24, 1980
    Date of Patent: March 1, 1983
    Assignee: Suntech, Inc.
    Inventors: James E. Lyons, George Suld, Robert W. Shinn, Kenneth A. Scott
  • Patent number: 4353792
    Abstract: Oxygen compounds are removed, e.g., by extraction, from a coal liquid prior to its hydrogenation. As a result, compared to hydrogenation of such a non-treated coal liquid, the rate of nitrogen removal is increased.
    Type: Grant
    Filed: February 1, 1980
    Date of Patent: October 12, 1982
    Assignee: Suntech, Inc.
    Inventors: Abraham Schneider, Elmer J. Hollstein, Edward J. Janoski, Edward G. Scheibel
  • Patent number: 4338186
    Abstract: A process for converting the raffinate from an HCl-treated shale oil to a suitable feedstock for a hydrocracking reactor for making fuels from the raffinate by hydrotreating the raffinate and thereafter water quenching the hydrotreated product.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: July 6, 1982
    Assignee: Suntech, Inc.
    Inventors: Henry E. Reif, Jeffrey P. Schwedock
  • Patent number: 4338469
    Abstract: In the acid-catalyzed etherification of olefins with alcohols, substantially complete recovery of alcohol and catalyst is obtained when small amounts of water (1-10%) are added to the reaction. The addition of water provides a two-phase reaction medium in which olefin and ether are in the upper phase and alcohol and catalyst are in the lower phase. These phase are maintained during the course of the reaction, which continues as a two-phase system.Certain novel ethers produced by this process are likewise disclosed herein.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: July 6, 1982
    Assignee: Suntech, Inc.
    Inventors: James E. Lyons, Peter Hosler
  • Patent number: 4327021
    Abstract: In the process of plasticizing polyvinylchloride, the improvement of using dicyclohexylbiphenyl as a secondary plasticizer.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: April 27, 1982
    Assignee: Suntech, Inc.
    Inventors: Brian C. Davis, Robert P. Bryer
  • Patent number: 4321153
    Abstract: Process of sulfurizing a blend of 90 to 50 and preferably 88 to 70 parts by volume of triglyceride such as lard oil and 10 to 50 and preferably 12 to 30 parts by volume of an ethylenically unsaturated hydrocarbon containing 2 to 24 carbon atoms. The sulfurization is carried out using elemental sulfur. Simultaneous sulfurization and chlorination may be effected by reacting with sulfur monochloride. Phosphosulfurization may also be carried out by addition of small amounts of a phosphorus sulfide to the sulfurized blend followed by heating at 180.degree. F. to 250.degree. F. for from 30 minutes to 10 hours to effect phosphosulfurization. The sulfurization or phosphosulfurization involves reacting at from 330.degree. F. to 445.degree. F. for 20 minutes to 10 hours followed by blowing with a gas at from 125.degree. F. to 250.degree. F. for 30 minutes to 20 hours to remove hydrogen sulfide. The simultaneous sulfurization and chlorination reaction is carried out at from 90.degree. F. to 280.degree. F.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: March 23, 1982
    Assignee: Suntech, Inc.
    Inventor: Alexander D. Recchuite
  • Patent number: 4320032
    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: September 5, 1980
    Date of Patent: March 16, 1982
    Assignee: Suntech, Inc.
    Inventor: Howard P. Angstadt
  • Patent number: 4306881
    Abstract: A liquid composition suitable as a high performance fuel and having improved rheological and stability properties comprising a liquid hydrocarbon having carbon particles dispersed therein of at least two disparate particle sizes, said two carbon particles being (1) a semi-reinforcing black having an average particle diameter of about 60 to about 100 mu and (2) a high abrasion furnace black having an average particle diameter of about 20 to about 50 mu.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: December 22, 1981
    Assignee: Suntech, Inc.
    Inventor: Richard S. Stearns
  • Patent number: 4306882
    Abstract: A liquid composition suitable as a high performance fuel and having improved rheological and stability properties comprising a liquid hydrocarbon having carbon particles dispersed therein of at least two disparate particle sizes, one of said carbon particles having an average particle diameter of from about 300 to about 350 mu and the other particle having an average particle diameter of about 60 to about 80 mu.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: December 22, 1981
    Assignee: Suntech, Inc.
    Inventor: Richard S. Stearns
  • Patent number: 4305729
    Abstract: A liquid composition suitable as a high performance fuel and having improved rheological and stability properties comprising a liquid hydrocarbon having carbon particles dispersed therein of at least two disparate particle sizes, one of said carbon particles having an average particle diameter of from about 300 to about 350 mu and the other particle having an average particle diameter of about 20 to about 50 mu, the carbon particles of the smaller size black being present in an amount between about 20 and about 25 weight percent of the total black percent.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: December 15, 1981
    Assignee: Suntech, Inc.
    Inventor: Richard S. Stearns
  • Patent number: 4297206
    Abstract: An improvement in the solvent extraction of nonhydrocarbons from a synfuel liquid, e.g., shale oil, involves that the extract from the extractor, rather than being recycled directly back to the extractor, is first hydrotreated. A further improvement involves that a portion of the hydrotreated extract is fractionated and a light fraction is returned to the extractor. Use of the hydrotreated extract as recycle increases the efficiency of the extractor. A still further improvement involves the use as a selective solvent of one of the following: dialkylformamide, aldehydomorpholine, keto-morpholine, morpholine or an aliphatic aromatic ketone. These preferred solvents have the advantage of providing a clear interface between the extract and raffinate in the extractor. Removal of the nonhydrocarbons permits production of more hydrocarbons having enhanced utility as a jet fuel from a synfuel liquid than otherwise would be possible.
    Type: Grant
    Filed: February 1, 1980
    Date of Patent: October 27, 1981
    Assignee: Suntech, Inc.
    Inventor: Edward G. Scheibel
  • Patent number: 4297454
    Abstract: A method for preparing a block copolymer of an ether free polylactam and a polyetheramide, e.g., poly(4,7-dioxadecamethylene adipamide) involves polymerizing a lactam, e.g., caprolactam, in contact with the polyetheramide. Resulting block copolymer has utility, e.g., as a fiber.
    Type: Grant
    Filed: November 14, 1979
    Date of Patent: October 27, 1981
    Assignee: Suntech, Inc.
    Inventor: Robert M. Thompson
  • Patent number: 4292219
    Abstract: In the acid-catalyzed etherification of olefins with alcohols, substantially complete recovery of alcohol and catalyst is obtained when small amounts of water (1-10%) are added to the reaction. The addition of water provides a two-phase reaction medium in which olefin and ether are in the upper phase and alcohol and catalyst are in the lower phase. These phases are maintained during the course of the reaction, which continues as a two-phase system. Certain novel ethers produced by this process are likewise disclosed herein.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: September 29, 1981
    Assignee: Suntech, Inc.
    Inventors: James E. Lyons, Peter Hosler
  • Patent number: 4289499
    Abstract: A process for selecting a perfluorocarbon compound from those having about 9 to 12 carbon atoms for preparing synthetic blood compositions. The process involves determining the critical solution temperature of the perfluorocarbon compound in a solvent such as n-hexane. The perfluorocarbon compound is accepted as suitable for preparing a synthetic blood composition if its critical solution temperature falls below a selected temperature set by the number of carbon atoms in the perfluorocarbon compound.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: September 15, 1981
    Assignees: Childrens Hospital Medical Center, Suntech, Inc.
    Inventors: Leland C. Clark, Jr., Robert E. Moore
  • Patent number: 4288644
    Abstract: Tetrahydrodimethyldicyclopentadiene is catalytically isomerized to a liquid isomeric mixture having a suitable low temperature viscosity making it suitable as a missile fuel. The catalyst comprises an acidic alumina. Hydrogen is also present and in an amount sufficient to maintain the isomerization activity of the alumina. The elevated temperature is sufficient to cause isomerization.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: September 8, 1981
    Assignee: Suntech, Inc.
    Inventors: Edward J. Janoski, Abraham Schneider, Richard E. Ware
  • Patent number: 4287162
    Abstract: A process for the separation and recovery of substantially pure ammonia from its admixture with gases, particularly with gases containing carbon dioxide and gases obtained from the catalytic ammoxidation of hydrocarbons to the corresponding nitriles, by scrubbing the ammonia containing gases with an aqueous solution containing a mixture of salts having different cations and the anions of one or more inorganic acids capable of absorbing and liberating ammonia; e.g., mixtures of different alkali metal salts of phosphoric, telluric, boric, vanadic, chromic, selenic, germanic, silicic and similar acids. Preferably the anion component will be at least one of phosphoric, chromic, or boric acids.
    Type: Grant
    Filed: July 18, 1979
    Date of Patent: September 1, 1981
    Assignee: Suntech, Inc.
    Inventor: Edward G. Scheibel
  • Patent number: 4278823
    Abstract: Hydrogenolysis of a saturated endo-endo dihydronorbornadiene hexacyclic dimer involves the use of a catalytic amount of a Group VIII metal and the presence of hydrogen. The resulting pentacyclic isomers can be used as a diluent for depressing the freezing point of the saturated hexacyclic dimer which is a component of a high density missile fuel.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: July 14, 1981
    Assignee: Suntech, Inc.
    Inventors: Abraham Schneider, Harry K. Myers, Jr.
  • Patent number: 4275254
    Abstract: Norbornadiene [bicyclo (2.2.1) heptadiene-2,5] is dimerized to a mixture of mainly the exo-endo stereoisomer of the hexacylic dimer of norbornadiene at both an excellent selectivity and conversion using an effective amount of a two component catalytic system of rhodium acetylacetonate and diethylaluminum chloride or ethylaluminum dichloride or aluminum ethylsesquichloride. The mixture also contains the endo-endo stereoisomer and some trimer. After hydrogenation a suitable mixture of the exo-endo and endo-endo dimers can be used as a component of high energy fuel.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: June 23, 1981
    Assignee: Suntech, Inc.
    Inventors: Abraham Schneider, Harry K. Myers, Jr., George Suld