Patents Examined by Joseph E. Evans
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Patent number: 5756778Abstract: 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: GrantFiled: April 3, 1995Date of Patent: May 26, 1998Assignee: Degussa AktiengesellschaftInventors: Georg Thiele, Eckehart Roland
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Patent number: 5648557Abstract: 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: GrantFiled: October 27, 1994Date of Patent: July 15, 1997Assignee: Mobil Oil CorporationInventor: Liwen Wei
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Patent number: 5639923Abstract: 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: GrantFiled: December 21, 1995Date of Patent: June 17, 1997Assignee: Hoechst AktiengesellschaftInventor: Konrad Von Werner
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Patent number: 5631265Abstract: 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: GrantFiled: February 6, 1995Date of Patent: May 20, 1997Assignee: Eli Lilly and CompanyInventors: James E. Audia, James J. Droste, Jeffrey S. Nissen
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Patent number: 5629340Abstract: 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: GrantFiled: July 10, 1995Date of Patent: May 13, 1997Assignee: Tsumura & Co.Inventors: Michihiko Kuwano, Mayumi Ono, Mika Kusano, Junko Watanabe, Masakazu Takeda
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Patent number: 5629461Abstract: 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: GrantFiled: June 27, 1995Date of Patent: May 13, 1997Assignee: Daikin Industries, Ltd.Inventors: Takashi Yasuhara, Akinori Yamamoto, Hirokazu Aoyama, Eiji Seki
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Patent number: 5629459Abstract: 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: GrantFiled: November 13, 1995Date of Patent: May 13, 1997Assignee: BP Chemicals LimitedInventor: Martin P. Atkins
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Patent number: 5629423Abstract: 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: GrantFiled: May 23, 1995Date of Patent: May 13, 1997Assignee: Cell Therapeutics, Inc.Inventors: J. Peter Klein, Alistair J. Leigh, John Michnick, Anil M. Kumar, Gail E. Underiner
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Patent number: 5625084Abstract: 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: GrantFiled: January 31, 1996Date of Patent: April 29, 1997Assignee: ARCO Chemical Technology, L.P.Inventors: Rangasamy Pitchai, Andrew P. Kahn, Anne M. Gaffney
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Patent number: 5621147Abstract: 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: GrantFiled: May 4, 1995Date of Patent: April 15, 1997Assignee: Asahi Glass Company Ltd.Inventors: Osamu Yokokoji, Tamaki Simizu, Seisaku Kumai
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Patent number: 5621152Abstract: 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 -20.degree. to 100.degree. C. over aluminum oxide.Type: GrantFiled: March 19, 1996Date of Patent: April 15, 1997Assignee: Hoechst AktiengesellschaftInventors: Rolf-Michael Jansen, Peter Hopp
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Patent number: 5621122Abstract: 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: GrantFiled: April 11, 1995Date of Patent: April 15, 1997Assignee: ARCO Chemical Technology, L.P.Inventors: Robert J. Saxton, John G. Zajacek, Guy L. Crocco, Kanthi S. Wijesekera
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Patent number: 5618984Abstract: 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 100.degree. C. and changed into an allylated phenol aralkyl resin at 160.degree.-250.degree. 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: GrantFiled: June 14, 1995Date of Patent: April 8, 1997Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Tomoyuki Kawabata, Teruo Yuasa, Shigeru Iimuro
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Patent number: 5618954Abstract: 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: GrantFiled: March 17, 1995Date of Patent: April 8, 1997Assignee: BASF AktiengesellschaftInventors: Stefan Boeck, Klaus Herzog, Rolf Fischer, Herbert Vogel, Martin Fischer
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Patent number: 5616800Abstract: 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: GrantFiled: May 31, 1995Date of Patent: April 1, 1997Assignee: The Dow Chemical CompanyInventors: Dorothy L. Roerden, R. Keith Frank
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Patent number: 5616817Abstract: 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: GrantFiled: November 20, 1995Date of Patent: April 1, 1997Assignee: BASF AktiengesellschaftInventors: Ludwig Schuster, Manfred Eggersdorfer
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Patent number: 5614646Abstract: 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: GrantFiled: November 17, 1995Date of Patent: March 25, 1997Assignee: BASF AktiengesellschaftInventors: Thomas Wettling, Ludwig Schuster, Jochem Henkelmann
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Patent number: 5614644Abstract: 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: GrantFiled: September 1, 1995Date of Patent: March 25, 1997Assignee: Eastman Chemical CompanyInventors: Shaowo Liang, John R. Monnier, Stanley J. Okrasinski, Timothy W. Price
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Patent number: 5608128Abstract: The present invention provides a production method of obtaining the mixture of 1,1,1,4,4,4-hexafluoro-2,3-dichloro-2-butene, 1,1,1,4,4,4-hexafluoro-2-chloro-2-butene and 1,1,1,4,4,4-hexafluoro-2-butene (1,1,1,4,4,4-hexafluoro-2-butene compounds) by reacting at least one of butane, butene and butadiene with chlorine and HF in the presence of a suitable catalyst, and also a production method of obtaining 1,1,1,4,4,4-hexafluorobutane by reducing said products in the presence of a noble metal catalyst.Type: GrantFiled: July 27, 1995Date of Patent: March 4, 1997Assignee: Daikin Industries, Ltd.Inventors: Tatsuo Nakada, Hirokazu Aoyama, Seiji Takubo
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Patent number: 5608089Abstract: A process for producing a highly pure cis-epoxysuccinate in a high yield while suppressing a production of DL-tartrate as a by-product by epoxidizing a maleate with hydrogen peroxide in the presence of an epoxidation catalyst, wherein said epoxidation is carried out in an aqueous solution containing 30 to 90% by volume of a water-soluble alcohol. It is possible to recycle the mother liquor separated of the formed cis-epoxysuccinate to the reaction system. The obtained cis-epoxysuccinate is useful as a polymer resin additive, a detergent builder(surfactant) and an intermediate for producing tartaric acid.Type: GrantFiled: August 24, 1995Date of Patent: March 4, 1997Assignee: Mitsubishi Chemical CorporationInventors: Keiichi Sato, Kenji Murayama, Kazutaka Ida