Patents Represented by Attorney Raymond H. Nelson

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  • Process for the separation of ethanol from water
    Patent number: 4319058
    Abstract: Ethanol may be separated from a feed mixture comprising ethanol and water by contacting said feed mixture with an adsorbent comprising a shaped replication of particle aggregates comprising carbonaceous pyropolymers containing recurring units of at least carbon and hydrogen atoms at a temperature in the range of from about 20.degree. to about 230.degree. C. and a pressure in the range of from about atmospheric to about 500 psig, selectively adsorbing substantially all of the ethanol to the substantial exclusion of water and thereafter recovering high purity ethanol by passing a desorbing material over the adsorbent.
    Type: Grant
    Filed: October 10, 1980
    Date of Patent: March 9, 1982
    Assignee: UOP Inc.
    Inventors: Santi Kulprathipanja, Richard W. Neuzil
  • Chiral supports for resolution of racemates
    Patent number: 4318819
    Abstract: Material which can be utilized as the stationary phase in liquid-solid chromatography for the resolution of racemic mixtures comprises an inorganic oxide silylated with a reagent whose remaining terminus is covalently bonded to a chiral hydroxy acid. For example, a 3-aminopropylsilylated silica gel may be reacted with a chiral tartaric anhydride to form a carboxamide linkage by which the chiral acid is covalently bound to the support.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: March 9, 1982
    Assignee: UOP Inc.
    Inventors: Thomas P. Malloy, Michael D. Tufano
  • Chiral supports for resolution of racemates
    Patent number: 4318820
    Abstract: An inorganic oxide impregnated with poly(aminostyrene) whose amino groups are covalently bonded to carboxyl groups of chiral organic hydroxy acids may be used as the solid stationary phase in the chromatographic separation of racemic mixtures.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: March 9, 1982
    Assignee: UOP Inc.
    Inventors: Thomas P. Malloy, Michael D. Tufano
  • Purification of dicarboxylic aromatic acids
    Patent number: 4317923
    Abstract: Dicarboxylic aromatic acids containing impurities such as aldehydes may be purified by treating the acids at an elevated temperature in the presence of a catalyst containing metallic rhenium whereby the impurities may be removed and the purified acids recovered.
    Type: Grant
    Filed: September 19, 1980
    Date of Patent: March 2, 1982
    Assignee: UOP Inc.
    Inventor: Tamotsu Imai
  • Use of metal ions in preparation of anhydropolyols
    Patent number: 4313884
    Abstract: Anhydrohexitols may be prepared from hexitols by heating the hexitols in the presence of metal ions whose charge to ionic radius ratio is from about 2.0 to about 3.2 at a temperature from about 100 to about 300.degree. C. A hexose, such as glucose, may be converted directly to anhydrohexitols, such as sorbitans, by hydrogenating the hexose in the presence of a suitable hydrogenation catalyst to which has been added an appropriate metal salt, such as nickel chloride.
    Type: Grant
    Filed: January 21, 1980
    Date of Patent: February 2, 1982
    Assignee: UOP Inc.
    Inventor: Blaise J. Arena
  • Enhanced hydrometallurgical recovery of cobalt and nickel from laterites
    Patent number: 4312841
    Abstract: The present process involves an improvement in the hydrometallurgical recovery of metal values from metal bearing sources such as ores and the like. The metal values are obtained by subjecting a metal bearing source to a reductive roast at an elevated temperature followed by cooling the reduced metal bearing source, extracting the cooled source and recovering the resultant metal values. An improvement in this process is effected by adding a compound containing a metal of Group IA or IIA of the Periodic Table to the source before subjecting the source to the reductive roast. Following the roast the ore is quenched in an aqueous solution and thereafter subjected to an extraction step.
    Type: Grant
    Filed: June 25, 1980
    Date of Patent: January 26, 1982
    Assignee: UOP Inc.
    Inventors: William K. Tolley, Pieter D. Rademaker
  • Recovery of catalysts
    Patent number: 4312779
    Abstract: Metal catalyst complexes such as those containing a metal of Group VIII of the Periodic Table which have been used in organic reactions such as the hydroformylation of olefins to form alcohols may be recovered from the product alcohols by treating said alcohol with anhydrous gaseous ammonia at temperatures in the range of from about 0.degree. to about 100.degree. C. and pressures in the range of from about 5 to about 1000 psi to precipitate the solution catalyst complex and thereby enable the separation of the catalyst complex from the product to be accomplished in a relatively simple manner.
    Type: Grant
    Filed: September 25, 1980
    Date of Patent: January 26, 1982
    Assignee: UOP Inc.
    Inventor: Michael H. Quick
  • Extraction of sucrose from molasses
    Patent number: 4312678
    Abstract: Sucrose which is found in molasses such as beet molasses or cane molasses may be selectively extracted therefrom by passing an aqueous solution of the molasses over an adsorbent comprising shaped replicates of particle aggregates consisting of a carbonaceous pyropolymer possessing recurring units containing at least carbon and hydrogen atoms. The sucrose will be selectively adsorbed thereon and separated from other sugars such as glucose, fructose, and raffinose which will inhibit the crystallization of sucrose in a subsequent operation. The sucrose is then removed from the adsorbent by treatment with a desorbent material comprising water.
    Type: Grant
    Filed: September 3, 1980
    Date of Patent: January 26, 1982
    Assignee: UOP Inc.
    Inventor: Arthur M. Landis
  • Preparation of N-phenyl-N-alkylphenylenediamines
    Patent number: 4304939
    Abstract: The desired compounds, namely, N-phenyl-N'-alkylphenylenediamines, are prepared by the reductive alkylation of a nitrogen-containing diphenylamine and a ketone in the presence of hydrogen and a hydrogenation catalyst. The desired product may be obtained in a more economical way when effecting the process in a continuous manner by utilizing an organic solvent for the reaction which comprises an ether compound such as a monoether of a dihydric alcohol, a diether of a dihydric alcohol, or a cyclic diether.
    Type: Grant
    Filed: November 2, 1978
    Date of Patent: December 8, 1981
    Assignee: UOP Inc.
    Inventor: Ted Symon
  • Preparation of ketones
    Patent number: 4299989
    Abstract: Ketones may be prepared from carboxylic acid esters by treating said esters at elevated temperatures in the range of from about 50.degree. to about 300.degree. C. and pressures ranging from 1 to about 300 atmospheres in the presence of a catalyst comprising a compound containing a metal of Group VIII of the Periodic Table. In addition, reaction is also effected in the presence of a quaternary alkylammonium salt which will increase the conversion of the ester to the desired ketone. Examples of catalysts which are employed will include the salts, carbonyls, and organometallic complexes of rhodium and cobalt.
    Type: Grant
    Filed: May 2, 1980
    Date of Patent: November 10, 1981
    Assignee: UOP Inc.
    Inventors: Alan R. Dodds, Tamotsu Imai
  • Recovery of catalysts
    Patent number: 4298499
    Abstract: Metallic catalysts such as Group VIII metal complexes which are used in hydroformylation reaction for the production of alcohols from olefins will be found in the product mixture. The separation and recovery of these metal catalysts from the product mixture may be accomplished by treating said product mixture with a biphyllic ligand capable of forming a soluble complex with the metallic catalyst and thus can be removed from the desired product.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: November 3, 1981
    Assignee: UOP Inc.
    Inventor: Tamotsu Imai
  • Multifunctional gasoline additives
    Patent number: 4295860
    Abstract: The reaction products of glycidyl ethers, wherein the alkoxy portion contains from about 6 to about 20 carbon atoms, with alkylenediamines, N-alkyl alkylenediamines, and N-alkoxyalkyl alkylenediamines are effective carburetor detergents and reducedeposits on various components of internal combustion engines. An example is the reaction product of the glycidyl ether whose alkoxy group is a mixture of 12-14 carbon atom chains with N-tallow-1,3-propylenediamine.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: October 20, 1981
    Assignee: UOP Inc.
    Inventor: Michael E. Childs
  • Catalyst recovery
    Patent number: 4292196
    Abstract: Catalysts which comprise metal carbonyls or organometallic complexes in which the metal portion of the complex is selected from a Group VIII metal are useful in hydroformylation reactions. The catalysts which are homogeneous in nature may be recovered from the hydroformylation products by treating the catalyst complex with a nitrogen-containing compound in an aqueous phase whereby said catalyst may be easily separated from the hydroformylation products and recovered.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: September 29, 1981
    Assignee: UOP Inc.
    Inventors: Edwin H. Homeier, Alan R. Dodds, Tamotsu Imai
  • Polymerization of unsaturated hydrocarbyl halide compounds
    Patent number: 4291143
    Abstract: Unsaturated hydrocarbyl halide compounds such as vinyl chloride may be polymerized by treating the compounds at a temperature in the range of from about 50.degree. to about 200.degree. C. and a pressure in the range of from atmospheric to about 100 atmospheres in the presence of a catalyst comprising a Group VIB metal carbonyl as exemplified by molybdenum hexacarbonyl.
    Type: Grant
    Filed: August 16, 1979
    Date of Patent: September 22, 1981
    Assignee: UOP Inc.
    Inventor: Edwin H. Homeier
  • Purification of chlorophenolic derived compounds
    Patent number: 4287038
    Abstract: Chlorophenolic derived compounds which may be used as herbicides and which contain a contaminant comprising 2,3,7,8-tetrachlorodibenzo-p-dioxin may be purified by subjecting a solution of the compound dissolved in a protic solvent to the emission from a light source having a wave length of from about 180 to about 350 nanometers, such as a laser beam, whereby the contaminant will be decomposed.
    Type: Grant
    Filed: May 8, 1980
    Date of Patent: September 1, 1981
    Assignee: UOP Inc.
    Inventors: Edward M. Geiser, Russell W. Johnson
  • Preparation of nitro-substituted diphenyl ethers
    Patent number: 4287372
    Abstract: A method of preparing nitro-substituted diphenyl ethers comprises contacting a salt of a phenol with a nitro-substituted halobenzene in the presence of a phase-transfer reagent under reaction conditions and recovering the reaction product.
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: September 1, 1981
    Assignee: UOP Inc.
    Inventor: Michael D. Tufano
  • Additives for hydrocarbon oils
    Patent number: 4284415
    Abstract: An additive for inhibiting sedimentation and retarding degradation of hydrocarbon oils as evidenced by discoloration comprises the reaction product of an alkoxyalkylamine with an epihalohydrin at a temperature from about 40.degree. C. to about 150.degree. C. in the presence of an inorganic base.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: August 18, 1981
    Assignee: UOP Inc.
    Inventors: Gary W. Y. Kwong, Joseph Levy
  • Recovery of metal values from a metal bearing source of nickel and vanadium
    Patent number: 4280839
    Abstract: Metal values may be recovered from metal bearing sources which contain at least two metals, at least one of which is in the form of a sulfide, by treating the aforesaid source with an oxidant at an elevated temperature in the range of from about 600.degree. to about 1500.degree. C. and in the presence of an added promoter comprising a sulfur-containing compound. The treatment will convert at least one metal value to an oxide and at least one metal value is converted to the elemental state which contains a relatively minor amount of a subsulfide. The addition of the sulfur-containing compound will result in an increase in the particle size of the elemental metal, thus permitting the recovery of said metal more readily.
    Type: Grant
    Filed: November 1, 1979
    Date of Patent: July 28, 1981
    Assignee: UOP Inc.
    Inventors: William K. Tolley, William C. Laughlin
  • Recovery of metal values from a metal bearing source of nickel and vanadium
    Patent number: 4276083
    Abstract: Metal values may be recovered from metal bearing sources which contain at least two metals, at least one of which is in the form of a sulfide, by treating the aforesaid source with a mild oxidant at an elevated temperature in the range of from about 600.degree. to about 1500.degree. C. whereby at least one metal value is converted to an oxide and at least one metal value is converted to the elemental state which contains a relatively minor amount of sulfur. Thereafter the metal compounds may be separated and recovered by conventional means.
    Type: Grant
    Filed: November 1, 1979
    Date of Patent: June 30, 1981
    Assignee: UOP Inc.
    Inventors: William K. Tolley, William C. Laughlin, William Rostoker
  • Preparation of 2,4,6-triisopropylphenol
    Patent number: 4275248
    Abstract: A process for introducing a plurality of alkyl groups into the aromatic ring of a hydroxy-substituted aromatic compound, whereby the available ortho sites are completely alkylated, comprises contacting said aromatic compound with olefin in the presence of a fluorided alumina as catalyst and recovering the product. The products of the process of this invention possess substantial antioxidant properties. A particular composition which shows enhanced resistance to oxidation and lowered gum formation comprises a major amount of a liquid petroleum product and from about 5 to about 500 parts per million by weight of a polyisopropyl hydroxy aromatic compound in which the available ortho positions are alkylated.
    Type: Grant
    Filed: April 9, 1980
    Date of Patent: June 23, 1981
    Assignee: UOP Inc.
    Inventor: Bruce E. Firth