Patents Represented by Attorney Raymond H. Nelson

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  • Dealkylation of halogenated alkyl substituted phenols
    Patent number: 4152529
    Abstract: Halogenated alkyl substituted phenols may be dealkylated by treating a compound such as 5-t-butyl-2-fluorophenol with a diealkylation catalyst such as an acid acting compound at dealkylation conditions whereby the t-butyl substituent is removed and the resulting compound comprising 2-fluorophenol is recovered.
    Type: Grant
    Filed: November 16, 1977
    Date of Patent: May 1, 1979
    Assignee: UOP Inc.
    Inventors: Nils J. Christensen, Joseph Levy
  • Production of metallic lead
    Patent number: 4149947
    Abstract: Metallic lead may be obtained from lead bearing sources such as lead sulfide ores or concentrates by halogenating the lead source, brine leaching the lead halide to separate the soluble lead halide from solid material such as gangue and recrystallizing the lead halide at a reduced temperature. Following this the lead halide is then converted to lead carbonate by treatment with carbon dioxide followed by solubilizing the lead carbonate in hydrofluosilicic acid and electrowinning the product to produce a purer lead sheet on the cathodes.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: April 17, 1979
    Assignee: UOP Inc.
    Inventors: John C. Stauter, William K. Tolley
  • Electrochemical oxidation of activated alkyl aromatic compounds
    Patent number: 4148696
    Abstract: The electrochemical oxidation of activated alkyl substituted aromatic compounds in which the alkyl substituent is acyloxylated in a direct oxidation process may be effected by treating an activated alkyl substituted aromatic compound with a fatty acid, an alkali metal or alkaline earth metal salt thereof and a phase transfer agent in an electrochemical cell to form oxidative products of the starting compound.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: April 10, 1979
    Assignee: UOP Inc.
    Inventor: Mark A. Halter
  • Support matrices for immobilized enzymes
    Patent number: 4141857
    Abstract: Support matrices for immobilized enzymes comprise a combined organic-inorganic support consisting of a porous inorganic support containing an organic polymeric material which possesses functionalized pendent groups, said polymeric material being entrapped and also adsorbed in part in the pores of the inorganic porous support. The organic polymeric component of the matrix constitutes a copolymer prepared in situ from a first polyfunctional monomer, a low molecular weight polymer, a low molecular weight polymer hydrolysate, or a preformed polymer of natural or synthetic origin which is reacted with an excess of a second bifunctional reactive monomer.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: February 27, 1979
    Assignee: UOP Inc.
    Inventors: Joseph Levy, Murray C. Fusee
  • Preparation of N,N'-dialkylphenylenediamines
    Patent number: 4140718
    Abstract: N,N'-dialkylphenylenediamines are prepared by the reductive alkylation of a nitroaniline 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 comprising an ether compound such as a monoether of a dihydric alcohol, a diether of a dihydric alcohol, or a cyclic diether.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: February 20, 1979
    Assignee: UOP Inc.
    Inventor: Ted Symon
  • Purification of titanium trichloride
    Patent number: 4137292
    Abstract: Titanium trichloride which is obtained during one step of a process for recovering titanium metal values from a titanium bearing source which still contains some impurities such as iron and vanadium compounds may be purified by drying the titanium compound in an air atmosphere, further drying under a carbon monoxide atmosphere and thereafter roasting the dried compound in the presence of chlorine at an elevated temperature to separate the impurities from the desired titanium compounds.
    Type: Grant
    Filed: March 2, 1978
    Date of Patent: January 30, 1979
    Assignee: UOP Inc.
    Inventor: William K. Tolley
  • Recovery of lead values
    Patent number: 4135993
    Abstract: Lead values may be recovered from lead bearing sources such as lead sulfide in improved purity. The improved purity is obtained by subjecting soluble lead halides formed by the halogenation of lead sulfide and brine leaching the chlorinated product prior to treatment with a reducing agent followed by filtration and further treatment with an oxidizing agent whereby impurities as represented by other metal values are removed.
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: January 23, 1979
    Assignee: UOP Inc.
    Inventor: Richard T. Um
  • Electrolytic production of metallic lead
    Patent number: 4135997
    Abstract: The production of metallic lead from lead bearing sources may be facilitated by a process in which a lead bearing source such as lead sulfide ores or concentrates are halogenated and the halogenated source is then brine leached in the presence of a sodium chloride solution to separate the soluble lead halide from solid material such as gangue and elemental sulfur. The soluble lead halide is recrystallized at a reduced temperature and thereafter converted to lead carbonate by treatment with sodium carbonate. Metallic lead in the form of sheets is recovered by solubilizing the lead carbonate in hydrofluosilicic acid and electrowinning lead from the solution.
    Type: Grant
    Filed: March 9, 1978
    Date of Patent: January 23, 1979
    Assignee: UOP Inc.
    Inventor: John C. Stauter
  • Production of ammonia
    Patent number: 4128621
    Abstract: Ammonia may be produced by the catalytic reaction of nitrogen and hydrogen, said reaction being effected in the presence of an activated transition metal macrocyclic compound. The catalyst is exemplified by cobalt phthalocyaninetetrasulfonate which has been activated by the application of a reductive potential in the range of from about -1.0 to about -3.0 volts, an example of this being by treatment with sodium borohydride. If so desired, the reaction may be effected in an inert solvent such as a paraffin, alcohol, etc.
    Type: Grant
    Filed: October 31, 1977
    Date of Patent: December 5, 1978
    Assignee: UOP Inc.
    Inventor: Edwin H. Homeier
  • Production of metallic lead
    Patent number: 4124457
    Abstract: Metallic lead is obtained from lead sulfide ores or concentrates by subjecting the concentrate to a drying step followed by halogenating the dried concentrate in a dry atmosphere at a temperature in the range of 90.degree. to about 120.degree. C. Thereafter the halogenated mixture is subjected to a water wash and leached with a brine solution. The brine solution is then filtered to separate elemental sulfur and residue from the solubilized lead halide, the latter being then crystallized and subjected to fused salt electrolysis to recover metallic lead.
    Type: Grant
    Filed: September 16, 1977
    Date of Patent: November 7, 1978
    Assignee: UOP Inc.
    Inventors: John C. Stauter, Richard T. Um
  • Production of metallic lead
    Patent number: 4124461
    Abstract: Metallic lead may be obtained from lead bearing sources such as lead sulfide ores or concentrates by halogenating the lead source, brine leaching the lead halide to separate the soluble lead halide from solid material such as gangue and recrystallizing the lead halide at a reduced temperature. Following this the lead halide is then converted to lead carbonate by treating the lead chloride with sodium bicarbonate. Thereafter the lead compounds are solubilized in hydrofluosilicic acid and subjected to electrowinning to produce lead sheet on the cathode.
    Type: Grant
    Filed: March 3, 1978
    Date of Patent: November 7, 1978
    Assignee: UOP Inc.
    Inventor: John C. Stauter
  • Preparation of 3-fluorosalicylaldehyde
    Patent number: 4124643
    Abstract: 3-Fluorosalicylaldehyde may be prepared in a more economical manner by alkylating o-fluorophenol with an allyl halide such as allyl chloride, thereafter rearranging the resultant o-fluorophenyl allyl ether to form allyl-o-fluorophenol. The latter compound is then isomerized to form propenyl-o-fluorophenol. Thereafter this compound is subjected to ozonolysis at a subambient temperature to form the desired compound, namely, 3-fluorosalicylaldehyde.
    Type: Grant
    Filed: August 3, 1977
    Date of Patent: November 7, 1978
    Assignee: UOP Inc.
    Inventors: Michael Martan, Dusan J. Engel
  • Hydrolysis of alkyl substituted dihalobenzene compounds
    Patent number: 4122288
    Abstract: Alkyl substituted 1,2-halofluorinated aromatic compounds may be subjected to hydrolysis to form an alkyl substituted o-fluorophenol by treating said compound with water in the presence of a relatively mildly basic compound such as the salt of a strong base and a weak acid at hydrolysis conditions to form the desired compound.
    Type: Grant
    Filed: November 16, 1977
    Date of Patent: October 24, 1978
    Assignee: UOP Inc.
    Inventors: Nils J. Christensen, Joseph Levy
  • Production of titanium metal values
    Patent number: 4119696
    Abstract: Titanium metal values may be recovered from a metal bearing source by subjecting the source to an oxidation step. The oxidized source is then divided, one portion being set to a reductive roast followed by leaching with hydrochloric acid. Thereafter, the remaining portion of the oxidized source is brought into contact with the leached solution whereby titanium dioxide is precipitated. The precipitated titanium dioxide is separated and recovered while the soluble metal values are treated for recovery thereof with a concurrent formation of hydrogen chloride, the latter being recycled back to the leaching zone.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: October 10, 1978
    Assignee: UOP Inc.
    Inventor: William K. Tolley
  • Production of titanium metal values
    Patent number: 4119697
    Abstract: Titanium metal values may be recovered from a titanium bearing source by subjecting the titanium bearing source to a reductive roast followed by leaching the reduced source with a hydrogen chloride source. Thereafter the leached titanium bearing source is precipitated by contact with a metal oxide such as ferric oxide in which the metal is present in a highly oxidized state. The precipitated titanium dioxide is separated and recovered while the spent liquor is treated to form hydrogen chloride which may be recycled to the leaching zone with a simultaneous formation of the metal oxide for recycle to the precipitation zone.
    Type: Grant
    Filed: July 11, 1977
    Date of Patent: October 10, 1978
    Assignee: UOP Inc.
    Inventor: William K. Tolley
  • Transesterification of carboxylic acids
    Patent number: 4112235
    Abstract: Carboxylic acids may be esterified by reaction with esters in the presence of a catalytic amount of a tin halide catalyst, the reaction being effected at temperatures ranging from about 0.degree. to about 150.degree. C.
    Type: Grant
    Filed: October 28, 1976
    Date of Patent: September 5, 1978
    Assignee: UOP Inc.
    Inventor: Louis Schmerling
  • Oligomerization of olefins
    Patent number: 4110410
    Abstract: Olefinic hydrocarbons containing from 2 to about 6 carbon atoms are oligomerized by treatment with a heterogeneous oligomerization catalyst which has been prepared by heating a metal oxide, thereafter contacting the metal oxide with titanium tetrachloride vapor in a series of steps at progressively higher temperatures ranging from about 50.degree. to about 600.degree. C. and thereafter heating the impregnated metal oxide in contact with hydrogen gas at an elevated temperature in the range of from about 300.degree. to about 700.degree. C. to reduce the titanium to a valence state of less than +4.
    Type: Grant
    Filed: June 22, 1977
    Date of Patent: August 29, 1978
    Assignee: UOP Inc.
    Inventor: Ji-Yong Ryu
  • Metal separation from dragstream material of refining process
    Patent number: 4110398
    Abstract: A process for the separation of a low metals content organic material from an easily calcinable solid material, effected by treating a low-melting solid material, resulting from the refining of a hydrocarbon crude oil, with naphtha at an elevated temperature and pressure whereby the resulting solid material, after separation of the liquid organic material, is in condition to be readily calcinable.
    Type: Grant
    Filed: April 8, 1977
    Date of Patent: August 29, 1978
    Assignee: UOP Inc.
    Inventors: Charles W. Selvidge, Kenneth A. Morgan, Robert R. Frame
  • Oligomerization of olefins
    Patent number: 4108920
    Abstract: Olefinic hydrocarbons containing from 3 to about 6 carbon atoms are oligomerized in the presence of a heterogeneous oligomerization catalyst which has been prepared by heating a metal oxide with hydrogen or nitrogen at an elevated temperature, impregnating the heated metal oxide with a solution of titanium tetrafluoride, cold rolling the impregnated oxide followed by steam drying at a temperature of about 100.degree. C. and further drying at an elevated temperature above 100.degree. C.
    Type: Grant
    Filed: June 1, 1977
    Date of Patent: August 22, 1978
    Assignee: UOP Inc.
    Inventor: Ji-Yong Ryu
  • Novel compositions of matter
    Patent number: 4107092
    Abstract: Novel compositions of matter comprise polymeric materials containing, as a filler therefor, a semiconducting pyropolymeric inorganic refractory oxide material, said compositions being useful in situations which require items such as electrically conductive sheets which possess a given electrical resistance.
    Type: Grant
    Filed: March 24, 1976
    Date of Patent: August 15, 1978
    Assignee: UOP Inc.
    Inventors: Robert D. Carnahan, William C. Holt, Jr., Karl J. Youtsey