Patents Examined by Anthony McFarlane
  • Patent number: 5559066
    Abstract: A process for the preparation of iron-, potassium- and cerium-containing catalysts for the dehydrogenation of hydrocarbons from the same spent catalysts (regeneration) by grinding and, if necessary, purifying the spent material, restoring the original activity by adjusting the composition and restoring the external shape comprises adding to the ground material an effective amount of potassium and such an amount of cerium that the total amount of cerium is greater than the amount originally present.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: September 24, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfgang J. Poepel, Gregor Tremmel, Wolfgang Buechele, Axel Deimling, Hermann Petersen
  • Patent number: 5559073
    Abstract: An exhaust gas catalyst for reducing the pollutant release containing in the exhaust gas. The catalyst includes a primary-core support. The catalyst also includes a distributed-catalytically-active multi-combination catalyst structure formed on the primary core support. The multi-combination catalyst structure includes an outermost gas-contact combination which includes atoms of metals selected from platinum group atomically immersed in the micro-space between a plurality of crystalline structures of composite oxides of a plurality of catalytically active metals and intimately attached to and protected by the crystalline structures in a protective inner combination.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: September 24, 1996
    Assignee: Beijing Huaxia Environmental Protection Company
    Inventors: Yimin Hu, Bifen Xu
  • Patent number: 5557029
    Abstract: In a process for isomerizing saturated C.sub.4- C.sub.10 hydrocarbons (preferably n-pentane) in the presence of a platinum/zeolite catalyst, wherein sulfur compounds are present in the feed as impurities and cause catalyst deactivating, at least one volatile chlorine compound (preferably tetrachloroethylene or carbon tetrachloride) is added to the feed in an amount sufficient to counteract the catalyst deactivation. A correlation between effective amounts of chloride additive(s) required to counteract the catalyst deactivating effect caused by specific sulfur compound(s) and a specific parameter of various sulfur compounds has been established. The water content in the isomerization feed is not to exceed about 60 ppm H.sub.2 O (based on the weight of the at least one feed hydrocarbons.
    Type: Grant
    Filed: September 6, 1995
    Date of Patent: September 17, 1996
    Assignee: Phillips Petroleum Company
    Inventors: Fan-Nan Lin, Nak J. Sung, Stephen L. Ege, Thomas A. Lessard
  • Patent number: 5554795
    Abstract: In accordance with the present invention there is provided a cyclopentadienyl-type ligand represented by the formula ZA, wherein Z is a cyclopentadienyl-type group, wherein A is --YPR.sub.2, --YNR.sub.2, or --NR.sub.2, wherein Y is an alkylene group containing 1 to 24 carbon atoms, wherein each R is individually selected from alkyl groups containing 1 to 20 carbon atoms. Another aspect of the invention is to provide a metallocene represented by the formula ZAMX.sub.3, wherein Z and A are as described above, M is a Group IVB or VB transition metal, and X is a halide. Other aspects of the present invention include catalyst systems comprising the metallocenes and an organoaluminoxane, processes for preparing the above defined ligands, metallocenes and catalyst systems, and polymerization processes employing the catalyst systems.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: September 10, 1996
    Assignee: Phillips Petroleum Company
    Inventors: Krisztina Frey, Gabriele von Massow, Helmut G. Alt, M. Bruce Welch
  • Patent number: 5552361
    Abstract: Homogeneous amorphous aluminum phosphate composition with a surface of 100 to 300 m.sup.2 /g and a pore volume in pores with diameters of less than 1000 nm of at least 1.0 cm.sup.3 /g, in which phosphorus and aluminum are present in a molar ratio in the range from 0.9:1 to 1:1 and which is characterized in that it is present in the form of microspherical particles with a particle size of 10 to 20 .mu.m and displays a bimodal pore-size distribution in the pore-diameter range of less than 1000 nm. Also described is a process for the production of the novel aluminum phosphate composition, which is suitable in particular as a cracking catalyst, as a catalyst support, especially for polymerization catalysts, as a flatting agent, as an adsorption agent and as a thickening agent.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: September 3, 1996
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Klaus Rieser, Christoph Weber, William A. Welsh
  • Patent number: 5547910
    Abstract: A method and system for cracking hydrocarbons and regeneration of the catalyst is described with particular emphasis directed to partially restoring the activity of the catalyst after an initial hydrocarbon conversion use by heat soaking the catalyst at an elevated temperature before use in a second hydrocarbon conversion zone.This case is a division of application Ser. No. 595,833, filed Jul. 14, 1975.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: August 20, 1996
    Assignee: Mobil Oil Corporation
    Inventors: Edward J. Demmel, Hartley Owen
  • Patent number: 5545793
    Abstract: The invention concerns a process for the skeletal isomerisation of n-olefins containing 4 to 20 carbon atoms, consisting in bringing a feedstock containing the olefins into contact with a catalyst prepared from an alumina-based compound which is treated with a polyoroanosiloxane then heat treated. The quantity of silica introduced is generally between 0.05% and 15% by weight.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: August 13, 1996
    Assignee: Institut Francais Du Petrole
    Inventors: Christine Travers, Jean-Pierre Burzynski
  • Patent number: 5545602
    Abstract: Heavy hydrocarbons are hydrotreated to increase content of components boiling below F. by contact with Group VIII non-noble metal oxide and Group VI-B metal oxide on alumina having a Total Surface Area of 150-240 m.sup.2 /g, a Total Pore Volume, (TPV) of 0.7-0.98, and a Pore Diameter Distribution whereby .ltoreq.20% of the TPV is present as primary micropores of diameter .ltoreq.100 .ANG., at least about 34% of TPV is present as secondary micropores of diameter of about 100 .ANG.-200 .ANG., and about 26%-46% of the TPV is present as mesopores of diameter .gtoreq.200 .ANG..
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: August 13, 1996
    Assignee: Texaco Inc.
    Inventors: Gerald V. Nelson, Govanon Nongbri, Roy E. Pratt, David E. Sherwood, Jr., Pei-Shing E. Dai
  • Patent number: 5543379
    Abstract: A metallic catalyst composition on an inert support, suitable in particular for hydrogenolysis reactions of higher polyhydric alcohols, characterized in that it comprises the following relative to 100 parts of the catalyst:a) 0.5 to 5 weight % ruthenium;b) 1 to 10 weight % of a metal selected from the group consisting of palladium, platinum and rhodium; andc) 0.5 to 2.5 weight % copper,in which the copper content is lower than the content of the metal b).The catalyst is used in particular for producing lower polyhydric alcohols such as ethanediol, propylene glycol, butanediol and glycerol, by means of hydrogenolysis reaction of higher polyhydric alcohols.
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: August 6, 1996
    Assignee: Montecatini Technologie S.r.l.
    Inventors: Giuseppe Gubitosa, Bruno Casale
  • Patent number: 5540853
    Abstract: Personal treatment compositions including cleansing and/or cosmetic compositions are disclosed, the cleansing compositions, for example, comprising from about 0.001% to about 10%, preferably from about 0.005% to about 6%, enduring perfume; from about 0.01% to about 95% surfactant system; and the balance carrier. The enduring perfume provides a lasting olfactory sensation thus minimizing the need to use large amounts. Preferred compositions are liquid and comprise water as a carrier.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: July 30, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Toan Trinh, Dennis R. Bacon, Angie Trandai
  • Patent number: 5539124
    Abstract: Disclosed is an azametallocene polymerization catalyst having the general formula ##STR1## where L is a ligand, or mixture of ligands, each having 4 to 30 carbon atoms and containing at least two fused rings, one of which is a pyrrolyl ring, Cp is a ligand containing a cyclopentadienyl group, B is a Lewis acid, Y is a halogen, alkoxy from C.sub.1 to C.sub.20, siloxy from C.sub.1 to C.sub.20, or mixtures thereof, M is titanium, zirconium, or mixtures thereof, m is 1 to 4, and n is 0 to 2, p is 0 to 2, q is 0 to 1, and m+n+q=4. The catalyst is useful in polymerizing unsaturated olefinic monomers such as ethylene.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: July 23, 1996
    Assignee: Occidental Chemical Corporation
    Inventors: Bradley P. Etherton, Sandor Nagy
  • Patent number: 5536691
    Abstract: Cobalt catalysts whose catalytically active material comprises from 55 to 98 wt % of cobalt, from 0.2 to 15 wt % of phosphorus, from 0.2 to 15 wt % of manganese, and from 0.2 to 15 wt % of alkali metal, calculated as oxide, in which the catalyst material is calcined in a first step at final temperatures of from to C. and in a second step at final temperatures of from to C., and a process for the hydrogenation of organic nitriles and/or imines, in which the novel cobalt catalyst is used.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: July 16, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Boris Breitscheidel, Peter Polanek, Matthias Irgang, Hermann Petersen, Gerd Linden, Guido Voit, Tom Witzel
  • Patent number: 5534476
    Abstract: A metal alloy in which the highest individual metal concentration is nickel and which always includes at minimum 4% by weight aluminum is used as the substrate for catalysts for purifying exhaust gases. Chromium, iron, cobalt, molybdenum and titanium are among the other metals possible.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: July 9, 1996
    Assignee: Kemira Oy
    Inventors: Marjo Luoma, Keijo Torkkell, Reijo Lylykangas, Pirkko Virta
  • Patent number: 5534475
    Abstract: Catalytically active ceramic monoliths coated with gamma alumina and impregnated with chromium, copper and nickel are used in catalytic converters for reduction of pollutants resulting from exhaust gases produced by internal combustion engines fueled with leaded gasoline.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: July 9, 1996
    Assignee: Instituto Mexicano Del Petroleo
    Inventors: Luis E. Miramontes Cardenas, Salavador Castillo Cervantes, Florencia M. Moran Pineda
  • Patent number: 5525322
    Abstract: Method for simultaneous recovery of hydrogen and hydrogen isotopes from water and from hydrocarbons. A palladium membrane, when utilized in cooperation with a nickel catalyst in a reactor, has been found to drive reactions such as water gas shift, steam reforming and methane cracking to substantial completion by removing the product hydrogen from the reacting mixture. In addition, ultrapure hydrogen is produced, thereby eliminating the need for an additional processing step.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: June 11, 1996
    Assignee: The Regents of the University of California
    Inventor: R. Scott Willms
  • Patent number: 5523512
    Abstract: Complexing reagents are provided which comprise Cu(I) carboxylates or Cu(I) sulfonates and high molecular weight olefins. The invention complexing reagents are useful for separating olefins from mixtures of olefins and paraffins.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: June 4, 1996
    Assignee: Phillips Petroleum Company
    Inventors: Ted H. Cymbaluk, Gerhard P. Nowack, Marvin M. Johnson
  • Patent number: 5520840
    Abstract: The present invention relates to synthetic detergent bars comprising 10-60% by wt. synthetic detergent surfactant; 10-60% of a water soluble structuring of water soluble structurant of MP between to C.; and 5-50% by wt. of a water-insoluble structurant of MP between C. Unexpectedly, applicants have found that addition of "true" water soluble starches yields processing and composition advantages.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: May 28, 1996
    Assignee: Lever Brothers Company
    Inventors: Michael Massaro, Terence Farrell, Gail B. Rattinger, Michael Petko
  • Patent number: 5516736
    Abstract: There is provided a method for selectivating a zeolite, such as ZSM-5 which may result in functionalization of the zeolite with at least one organosiliceous group of the formula, SiR.sub.n (OX).sub.4-n, where R is at least one hydrocarbyl group, n is 1 or 2 and X is Si or H. This selectivation method involves vapor phase treatment of a zeolite with an organosilicon compound having at least 2 silicon atoms. This organosilicon compound may be a silicone compound, such as hexamethyldisiloxane, or a silane compound such as hexamethyldisilane. This contacting may take place in the presence of hydrogen and an organic carrier. The functionalized zeolites may provide a catalyst which is both highly active and highly selective for converting aromatic hydrocarbons, especially alkylbenzene compounds, to products comprising the para-isomer of dialkylbenzenes. The disproportionation of toluene is an example of such a reaction.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: May 14, 1996
    Assignee: Mobil Oil Corp.
    Inventors: Clarence D. Chang, Paul G. Rodewald
  • Patent number: 5516743
    Abstract: Disclosed is a process for providing an improved catalyst support comprising the steps of providing a dispersion of alumina in water, the dispersion maintained under acidic conditions; and adding a stabilizing agent to said dispersion, the stabilizing agent capable of stabilizing said dispersion and inhibiting gellation thereof, the stabilizing agent having the formula: ##STR1##
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: May 14, 1996
    Assignee: Carnegie Mellon University
    Inventors: David A. Dzombak, Cynthia R. Evanko
  • Patent number: 5516741
    Abstract: A catalyst comprising catalytic material on a support, the catalytic material comprising platinum, and the support consisting essentially of at least one of zirconia, tin oxide and titania, which catalyst contains less than 400 ppm of chlorine atoms based on the weight of catalytic material plus support, is useful for reducing the content of nitrogen oxides in a flue gas containing them, oxygen and 5-3000 ppm by volume of sulphur dioxide by admixing ammonia with the flue gas and passing the mixture over the catalyst.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: May 14, 1996
    Assignee: Johnson Matthey Public Limited Company
    Inventors: John M. Gascoyne, John W. Hayes, Graham P. Ansell