Patents Examined by Joseph E. Evans
  • Patent number: 5756778
    Abstract: A catalyst includes or consists essentially of the oxides of silicon, aluminum and titanium, characterized in that the catalyst particles are built up from a core with the composition (SiO.sub.2).sub.y (AlO.sub.2).sub.y M.sub.y, wherein x/y=10 to .infin. and M.dbd.H. Na, K, NH.sub.4, or NR.sub.4, wherein R is a C.sub.1-8 -alkyl, and a shell with the composition (SiO.sub.2).sub.n (TiO.sub.2).sub.m, wherein n/m=12 to 1000. Both the core and the shell have a crystal structure of MFI or MEL. The catalyst can be prepared by preparing a synthesis gel for the preparation of a titanium silicalite, thereafter introducing an aluminosilicate of the MFI or MEL structural type into this synthesis gel, and working up the synthesis gel in a known manner to obtain the product.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: May 26, 1998
    Assignee: Degussa Aktiengesellschaft
    Inventors: Georg Thiele, Eckehart Roland
  • Patent number: 5648557
    Abstract: Cyclic ethers are polymerized or copolymerized in homogeneous liquid phase using very low concentrations of heteropolyacid catalyst to produce essentially linear polyoxyalkylene polymers. The product of the polymerization contains less than 2 weight percent cyclic oligomer by-product and has a molecular weight distribution (M.sub.w /M.sub.n) between 1 and 2. Alcohols, acyl-containing compounds and alkalies can be used as end-caping groups to terminate polymerization or modify the properties of the polymer produced. The process produces novel polyoxyalkylene copolymers and block copolymers that are useful as lubricants. The copolymers have a high viscosity index and are compatible with mineral oil and synthetic hydrocarbon lubricants. Preferred comonomers are tetrahydrofuran, C.sub.2 -C.sub.20 monoepoxides and oxetan.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: July 15, 1997
    Assignee: Mobil Oil Corporation
    Inventor: Liwen Wei
  • Patent number: 5639923
    Abstract: The selectivity of copper as the catalyst for the reaction of short-chain perfluoroalkyl iodides with tetrafluoroethylene is increased if a further transition metal is employed as a cocatalyst.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: June 17, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Konrad Von Werner
  • Patent number: 5631265
    Abstract: The present invention provides novel tetrahydro-beta-carboline compounds and intermediates having useful central nervous system activity. The invention provides formulations and methods for using the tetrahydro-beta-carboline and related intermediate compounds. Finally, the invention provides an article of manufacture.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: May 20, 1997
    Assignee: Eli Lilly and Company
    Inventors: James E. Audia, James J. Droste, Jeffrey S. Nissen
  • Patent number: 5629459
    Abstract: This invention relates to a process for hydrating olefins to the corresponding alcohols in the vapor phase in the presence of a catalyst system comprising a heteropolyacid catalyst supported on a clay support, the clay support being a hot acid treated clay. The hot acid treated clay is prepared by progressively leaching a commercial bentonite type clay with hot acid to enable the cations in the clay to be exchanged for hydrogen ions leading to a clay support of surface area greater than 50 m.sup.2 /g. By using the specific acid treated clays as support, it is possible not only to increase the space-time-yield of the process but also to prolong the life of the support thereby reducing the frequency with which the support is changed or replaced on a plant.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: May 13, 1997
    Assignee: BP Chemicals Limited
    Inventor: Martin P. Atkins
  • Patent number: 5629340
    Abstract: An angiogenesis inhibitor comprising, as an active agent, Compound (I) represented by the formula below: ##STR1## where R.sub.1 is a lower alkyl group, an alkoxycarbonyl group or a carboxyl group; andR.sub.2, R.sub.3 and R.sub.4 maybe the same or different and represent a hydrogen atom, a hydroxyl group, a methoxy group or an acetoxy group.This compound has a remarkable angiogenesis inhibition activity, and an angiogenesis inhibitor useful for treatment of various diseases are provided.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: May 13, 1997
    Assignee: Tsumura & Co.
    Inventors: Michihiko Kuwano, Mayumi Ono, Mika Kusano, Junko Watanabe, Masakazu Takeda
  • Patent number: 5629423
    Abstract: A process for synthesizing enantiomerically pure chiral secondary alcohol compounds linked to a heterocyclic core moiety, using a natural chiral molecule starting material. The inventive process is particularly useful for bulk manufacturing of chiral secondary alcohol compounds.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: May 13, 1997
    Assignee: Cell Therapeutics, Inc.
    Inventors: J. Peter Klein, Alistair J. Leigh, John Michnick, Anil M. Kumar, Gail E. Underiner
  • Patent number: 5629461
    Abstract: There is provided a method of producing 1,1,2,2,3-pentafluoropropane by reacting 1-chloro-2,2,3,3-tetrafluoropropane with hydrogen fluoride in the presence of fluorinated catalyst. By this method, 1,1,2,2,3-pentafluoropropane can be obtained industrially and economically at high yield.
    Type: Grant
    Filed: June 27, 1995
    Date of Patent: May 13, 1997
    Assignee: Daikin Industries, Ltd.
    Inventors: Takashi Yasuhara, Akinori Yamamoto, Hirokazu Aoyama, Eiji Seki
  • Patent number: 5625084
    Abstract: Propylene is converted to propylene oxide in a vapor phase oxidation process employing a silver catalyst supported on an alkaline earth metal carbonate and containing both a potassium salt such as potassium nitrate and a molybdenum promoter. The potassium salt and the molybdenum promoter may be simultaneously supplied by the use of a potassium salt of a molybdenum oxyanion. The efficiency of the process is greatly enhanced through the simultaneous inclusion of carbon dioxide and an organic halide in the feedstream. The feedstream need not contain a nitrogen oxide species such as NO to attain high propylene oxide selectivity.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: April 29, 1997
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Rangasamy Pitchai, Andrew P. Kahn, Anne M. Gaffney
  • Patent number: 5621122
    Abstract: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide or an organic hydroperoxide is utilized as the oxidizing agent.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: April 15, 1997
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Robert J. Saxton, John G. Zajacek, Guy L. Crocco, Kanthi S. Wijesekera
  • Patent number: 5621152
    Abstract: Process for removing olefinic impurities from 2H-heptafluoropropane (R 227).The invention relates to a process for removing olefinic impurities from 2H-heptafluoropropane (R 227) by passing the contaminated R 227 in the gas phase at from to C. over aluminum oxide.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: April 15, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rolf-Michael Jansen, Peter Hopp
  • Patent number: 5621147
    Abstract: A 1,1,2-trifluoro-2-(trans-4-substituted cyclohexyl)ethylene of the formula (1):R--(A).sub.m --Cy--CF=CF.sub.2 (1)wherein R is a C.sub.1-10 alkyl group, a halogen atom or a cyano group, provided that in the case of the alkyl group, an oxygen atom may be interposed in a carbon-carbon bond of the alkyl group or in a carbon-carbon bond between this alkyl group and A, some of carbon-carbon bonds in the alkyl group may be triple bonds or double bonds, one --CH.sub.2 -- group in the alkyl group may be substituted by a carbonyl group, and some or all of hydrogen atoms in the alkyl group may be substituted by fluorine atoms;Cy is an unsubstituted trans-1,4-cyclohexylene group;A is a trans-1,4-cyclohexylene group, a 1,4-phenylene group or a 1,4-cyclohexenylene group, wherein each of such cyclic groups is unsubstituted or substituted by one or more halogen atoms or cyano groups, one or more =CH-- groups constituting rings of such cyclic groups may be substituted by nitrogen atoms, and one or more --CH.sub.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: April 15, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Osamu Yokokoji, Tamaki Simizu, Seisaku Kumai
  • Patent number: 5618954
    Abstract: 3,4-Epoxy-1-butene is prepared by the gas phase epoxidation of 1,3-butadiene by means of oxygen or oxygen-containing gases over silver-containing catalysts and isolation of the 3,4-epoxy-1-butene from the reaction exit mixture by performing the gas phase epoxidation in the presence of from 6 to 80 mol % of water vapor, based on the gas mixture supplied to the reactor.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: April 8, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Stefan Boeck, Klaus Herzog, Rolf Fischer, Herbert Vogel, Martin Fischer
  • Patent number: 5618984
    Abstract: An allyletherificated phenol aralkyl resin is obtained through the reaction of a phenol aralkyl resin with an allyl halide in the presence of a base in an organic solvent at room temperature to C. and changed into an allylated phenol aralkyl resin at C. through Claisen rearrangement. The two resins are low in melt viscosity. Epoxy resin compositions containing the allylated phenol aralkyl resin as the curing agent give cured products being excellent in heat and moisture resistances.
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: April 8, 1997
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tomoyuki Kawabata, Teruo Yuasa, Shigeru Iimuro
  • Patent number: 5616817
    Abstract: A process for the preparation of 1,2-propanediol by catalytic hydrogenation of glycerol at elevated temperature and elevated pressure, which comprises using glycerol having a water content of up to 20% by weight and a catalyst comprising the metals cobalt, copper, manganese and molybdenum in amounts of, based on the total weight of the catalyst,from 40 to 70% by weight of cobalt,from 10 to 20% by weight of copper,from 0 to 10% by weight of manganese andfrom 0 to 10% by weight of molybdenum,where this catalytically active material may additionally contain inorganic polyacids and/or heteropolyacids in an amount of up to 10% by weight, based on the total weight of the catalyst.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: April 1, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Ludwig Schuster, Manfred Eggersdorfer
  • Patent number: 5616800
    Abstract: This invention relates to novel dicationic and polycationic monoprimary alcohol compounds and their derivatives, represented by the formula ##STR1## wherein each alk is independently alkyl of 1-8 carbon atoms; each ALK is independently alkyl of 1-8 carbon atoms; each R.sub.1, R.sub.2, R.sub.3, R.sub.4 or R.sub.5 is independently H or alkyl of 1-8 carbon atoms; n is 2-5; G is H, CR.sub.1 R.sub.2 CR.sub.3 OHCR.sub.4 R.sub.5 X or ##STR2## X is Cl, Br or I; An.sup.- is an anion and p is 1-10; provided that the compound is soluble in water.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: April 1, 1997
    Assignee: The Dow Chemical Company
    Inventors: Dorothy L. Roerden, R. Keith Frank
  • Patent number: 5614646
    Abstract: A process for the selective hydrogenation of aromatic groups of organic molecules carrying at least one aromatic group and one epoxy group with hydrogen in the presence of a ruthenium-containing catalyst, in which the hydrogenation is carried out in the presence of from 0.2 to 10 wt % of water, based on the reaction mixture.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: March 25, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Wettling, Ludwig Schuster, Jochem Henkelmann
  • Patent number: 5614644
    Abstract: Disclosed is a process for the removal of organic chlorides from furan and hydrogenated furans by contacting a crude product stream comprising (i) furan, 2,3-DHF, 2,5-DHF, THF or a mixture thereof and (ii) one or more organic chlorides with a copper-containing scavenger material.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: March 25, 1997
    Assignee: Eastman Chemical Company
    Inventors: Shaowo Liang, John R. Monnier, Stanley J. Okrasinski, Timothy W. Price
  • Patent number: 5608122
    Abstract: A liquid starting mixture contains at least one fatty acid having 6 to 30 carbon atoms per molecule and per mole of fatty acid comprises 1.0 to 1.5 moles of fatty alcohol having 6 to 30 carbon atoms. An intermediate product which contains at least 50% by weight is prepared from the liquid starting product, which is passed at temperatures from about 120 to C. through a stirring zone and is sprayed and water vapor is removed. The intermediate product is hydrogenated to produce a raw product, which contains at least 75% by weight fatty alcohol. A partial stream which contains fatty alcohol is removed from the raw product and is added to the liquid starting mixture. The intermediate product which contains at least 50% by weight wax ester can be prepared without use of a solids containing catalyst.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: March 4, 1997
    Assignee: Metallgesellschaft AG
    Inventors: Henning Buchold, Fritz-J urgen G artner, Gert Mallok, Eberhard Schlichting, Hans-Martin St onner
  • Patent number: 5608129
    Abstract: To remove the traces of chlorofluoromethane present in a difluoromethane, the difluoromethane to be purified is passed over a 13X molecular sieve at a temperature of at least C.The sieve can be regenerated by washing with the aid of a solution of sodium or potassium carbonate and heating to high temperature under inert atmosphere or in vacuum.
    Type: Grant
    Filed: September 26, 1995
    Date of Patent: March 4, 1997
    Assignee: Elf Atochem S.A.
    Inventor: Rene Bertocchio