Patents Examined by J. Saba
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Patent number: 4967034Abstract: The invention relates to a process for the vapor phase alkylation of alkanes or aromatic hydrocarbons comprising (a) adsorbing an alkene on a dry cation exchange resin in its hydrogen form and (b) reacting said adsorbed alkene with at least one alkane or at least one aromatic hydrocarbon.Type: GrantFiled: August 16, 1989Date of Patent: October 30, 1990Assignee: Energia Andina Ltd.Inventors: Jorge P. Miller, Miguel F. Kling
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Patent number: 4967033Abstract: The polyunsaturated compounds of formula ##STR1## having two conjugated double bonds in the endo- and exo- positions of the pentagonal cycle indicated by the dotted lines, and wherein symbols R.sup.1 and R.sup.2, when taken separately, represent respectively a. a linear or brached C.sub.1 to C.sub.4 alkyl radical and b. an hydrogen atom or a methyl radical, or, when taken together with the carbon atoms to which they are bonded form a polymethylenic cycle such as indicated by the dotted line, containing from 5 to 12 carbon atoms, and symbol R.sup.3 stands for an hydrogen atom or a methyl radical, n being an integer equal to 0 or 1, which are useful intermediate products for the preparation of odoriferous macrocyclic ketones, are prepared according to a process comprising a vapor phase cyclization of an enone of formula ##STR2## wherein the dotted line and the symbols n, R.sup.1, R.sup.2 and R.sup.Type: GrantFiled: January 31, 1990Date of Patent: October 30, 1990Assignee: Firmenich S.A.Inventor: Cyril Mahaim
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Patent number: 4963340Abstract: There is provided a process for converting methane to carbon disulfide. More particularly, methane is decomposed to form elemental carbon and elemental hydrogen, and the elemental carbon is reacted with sulfur to form carbon disulfide. Carbon disulfide may then be contacted with hydrogen, optionally in the presence of more methane, under conditions sufficient to produce CH.sub.3 SH. This CH.sub.3 SH may then be contacted with a sufficient catalyst, such as a zeolite, especially ZSM-5, under conditions sufficient to produce hydrocarbon having two or more carbon atoms.Type: GrantFiled: January 30, 1990Date of Patent: October 16, 1990Assignee: Mobil Oil CorporationInventors: Costandi A. Audeh, Weldon K. Bell
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Patent number: 4962262Abstract: 1-Olefin polymer waxes having a very narrow molecular weight distribution, high isotacticity, a narrow grain size distribution and a high bulk density are obtained by means of a catalyst comprising a chiral, stereorigid metallocene compound and an aluminoxane, in the presence of small amounts of hydrogen during the polymerization.Type: GrantFiled: December 19, 1988Date of Patent: October 9, 1990Assignee: Hoechst AktiengesellschaftInventors: Andreas Winter, Martin Antberg, Jurgen Rohrmann
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Patent number: 4962253Abstract: A process for the preparation of vinyl aromatic compounds comprises contacting an aromatic compound and an olefin in the presence of a catalytic amount of a cyclopentadienyl, indenyl, or fluorenyl rhodium complex under reaction conditions sufficient to form the corresponding vinyl aromatic compound. Novel alkyl- or trimethylsilyl-substituted indenyl or fluorenyl compounds are among the compounds suitable for use in the process of the invention.Type: GrantFiled: August 21, 1989Date of Patent: October 9, 1990Assignee: The Dow Chemical CompanyInventor: Robert A. Dubois
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Patent number: 4957870Abstract: Reticulocytes, RNA or DNA are stained with a dye for detection in a flow cytometer. The dye has the formula: ##STR1## Wherein X=O, S, se or C(CH.sub.3).sub.2 ;R.sub.1 =alkyl having from 1-6 carbons;R.sub.2 =alkyl having from 1-6 carbons;R.sub.3 =fused benzene, alkyl (having 1-6 carbons), methoxy or is absent;R.sub.4 =alkyl having 1-6 carbons, methoxy or is absent; andn=zero or an integer from 1-6.Type: GrantFiled: April 3, 1989Date of Patent: September 18, 1990Assignee: Becton, Dickinson and CompanyInventors: Linda G. Lee, Chia-Huei Chen
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Patent number: 4956517Abstract: There is provided a process for the dehydrogenation of saturated hydrocarbons having from 2 to 5 carbon atoms. The feed is contacted with a catalyst which includes a base metal or noble metal which is incorporated into or onto a pillared layered silicate. A preferred pillared layered silicate is kenyaite containing interspathic silica, and a preferred base metal or noble metal is chromium.Type: GrantFiled: December 29, 1989Date of Patent: September 11, 1990Assignee: Mobil Oil CorporationInventors: Ivy D. Johnson, Pochen Chu, Charles T. Kresge
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Patent number: 4956508Abstract: The invention relates to a process for preparing a polyalkyl perylene which consists in subjecting the corresponding polyalkyl 1,1'-dinaphthalene derivative to a cyclodehydrogenation reaction, by means of an alkali metal. It also relates to the polyalkyl perylene obtained, and to the organic material derived therefrom exhibiting an electron spin resonance spectrum.Type: GrantFiled: February 8, 1989Date of Patent: September 11, 1990Assignee: Thomson-CSFInventors: Philippe Michel, Alexandre Moradpour, Paul Penven
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Patent number: 4956483Abstract: A class of new oxide structures containing octahedral molybdenum and tetrahedral phosphorous has been generated using hydothermal techniques. These materials are produced by the reaction of a molybdenum oxide source with phosphate and any one, or combination of organic cation/alkali-metal cation/organic amine as a templating/mineralizing agent. A reducing agent is necessary to convert the Mo(VI) to a lower valent form and can be either added to the reaction mixture or is provided in the form of one the reactants.Type: GrantFiled: May 12, 1989Date of Patent: September 11, 1990Assignee: Exxon Research and Engineering CompanyInventors: Edward W. Corcoran, Jr., Robert C. Haushalter, Wen-Yih F. Lai
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Patent number: 4956482Abstract: Known pregnane derivatives are prepared by esterification of know androstane derivatives to give new esters of Formula III ##STR1## wherein in each case symbolizes a single bond or a double bond,n is 1 or 2,R.sub.1 is hydrogen or methyl,R.sub.2 is hydrogen or formyl, andR.sub.3 is chlorine, hydroxy or an alkanoyloxy group of up to 6 carbon atoms,and reaction of the latter with Ag(I) and formic acid.Type: GrantFiled: March 20, 1989Date of Patent: September 11, 1990Assignee: Schering AktiengesellschaftInventors: Helmut Hofmeister, Klaus Annen, Henry Laurent, Rudolf Wiechert
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Patent number: 4952741Abstract: Catalyst supports, catalyst systems, methods for the preparation thereof, and dimerization process therewith are provided. Catalyst systems comprise at least one elemental alkali metal and at least one paraffinic material deposited on an alkali metal carbonate catalyst support. Optionally, the catalyst system further comprises at least one promoter and at least one carbonaceous compound.Type: GrantFiled: January 16, 1990Date of Patent: August 28, 1990Assignee: Phillips Petroleum CompanyInventor: Charles A. Drake
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Patent number: 4952549Abstract: Substituted or unsubstituted cyclohexylamine and substituted or substituted dicyclohexylamine can be produced by catalytic hydrogenation of substituted or unsubstituted aniline, for which a catalyst is used containing ruthenium and palladium which are attached to a support and which catalyst furthermore contains a basic alkali metal compound. The catalyst contains the noble metals in a total amount of 0.05 to 5% by weight and in a weight ratio of ruthenium to palladium such as 1:9-9:1. The basic alkali metal compound is present in an amount of 0.1-10% by weight. All percentages are based on the total weight of the catalyst.Type: GrantFiled: January 10, 1989Date of Patent: August 28, 1990Assignee: Bayer AktiengesellschaftInventors: Otto Immel, Hans-Helmut Schwarz
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Patent number: 4952742Abstract: Polyunsaturated hydrocarbons of the formula ##STR1## are prepared from unsaturated alcohols of the formula ##STR2## in the presence of zeolite catalysts, in particular zeolites of the pentasil type.Type: GrantFiled: May 10, 1989Date of Patent: August 28, 1990Assignee: BASF AktiengsellschaftInventors: Michael Hesse, Rainer Becker
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Patent number: 4950833Abstract: The present invention relates to a process for the reductive dehalogenation of polyhaloaromatic compounds. It comprises reacting polyhaloaromatics in a hydrocarbon or silicone-based oil or an organic diluent, with an alkali metal in the presence of an ammonium salt to reduce the polyhaloaromatics to hydrogenated aromatics and to convert the halogen content to metal halides. Preferably, the polyhaloaromatics and the ammonium salt are to be reacted with the alkali metal in the form of a suspension. Other preferred features include the use of an amount of alkali metal ranging from 5 to 10 moles and the use of an amount of ammonium salt also ranging from 5 to 10 moles for each mole of the polyhaloaromatic compound to be reduced, carrying out the reaction under an inert atmosphere and carrying out the reaction at a temperature ranging from 40.degree. to 60.degree. C.Type: GrantFiled: September 28, 1989Date of Patent: August 21, 1990Assignee: Her Majesty the Queen in right of Canada, as represented by the National Research Council of CanadaInventors: Jalal A. Hawari, Rejean Samson
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Patent number: 4950831Abstract: An alkene is coupled with an aromatic hydrocarbon having an active hydrogen on a saturated alpha-carbon in the presence of an unsupported alkali metal as a catalyst under high shear agitation conditions. In preferred embodiments of the invention, the alkene is an alkene of 2-20 carbons, such as ethene or propene; the active hydrogen-containing aromatic hydrocarbon is an alkyl-benzene, such as toluene; the alkali metal is potassium or a potassium alloy; and the high shear agitation conditions are attained by operating a turbine-type impeller at a tip speed of at least about 5 m/sec.Type: GrantFiled: September 28, 1989Date of Patent: August 21, 1990Assignee: Ethyl CorporationInventors: James S. Staton, Ronald A. Turnblad, Jr., Robert B. Agee
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Patent number: 4950428Abstract: A novel process for the preparation of 20-keto-pregnanes.Type: GrantFiled: May 25, 1989Date of Patent: August 21, 1990Assignee: Roussel UclafInventors: Michel Vivat, Jean Buendia
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Patent number: 4943670Abstract: A process for the preparation of a compound of general formula ##STR1## in which R.sup.1 represents a hydrogen atom or a methyl group, one of R.sup.2 and R.sup.3 represents a hydrogen atom and the other of R.sup.2 and R.sup.3 is the same as R.sup.1, which comprises reacting a compound of the general formulaR.sup.1 CH.dbd.C.dbd.CH.sub.2 (II)with a salt of formic acid in the presence of a catalyst system comprising a palladium salt and a phosphorus compound of general formulaP(OX).sub.n (X).sub.3-n (III)in which n is 0,1,2 or 3 and each X independently represents an alkyl, alkenyl, aryl, aralkyl, alkaryl or cycloalkyl group, and recovering the desired compound of formula (I).Type: GrantFiled: November 22, 1989Date of Patent: July 24, 1990Assignee: Shell Oil CompanyInventors: Brian L. Goodall, Willem Terlouw, Jacob C. van der Sar
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Patent number: 4939309Abstract: A method for the preparation of biaryl compounds is disclosed which comprises contacting an aryl halide with a tertiary-alkyl organometallic reagent (or the precursor components thereof) in the presence of a catalyst comprising a nickel compound and a coordinating ligand under conditions suitable for the formation of biaryl compound.In an alternative embodiment of the present invention, nickel(0) compounds are prepared from nickel(II) compounds by contacting a nickel(II) compound with a combination of an organophosphine and a bidentate nitrogen-containing coordinating ligand, and a tertiary-alkyl organometallic reagent (or the precursor components thereof) in an aprotic, non-polar, ether-containing solvent system for a time and under conditions suitable for the formation of nickel(0) compound.Type: GrantFiled: May 3, 1989Date of Patent: July 3, 1990Assignee: Eastman Kodak CompanyInventor: Thomas A. Puckette
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Patent number: 4929784Abstract: Optionally substituted benzyl-benzenes can be prepared by reaction of a benzyl alcohol of the formula ##STR1## with a benzene of the formula ##STR2## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently of one another denote hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, fluorine or chlorine, where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently of one another may also represent hydroxyl and R.sup.5 may additionally be C.sub.5 -C.sub.8 -alkyl,R.sup.6 represents hydrogen or one of the groups ##STR3## R.sup.8 denotes hydrogen or hydroxymethyl, in a ratio of 1 mole of benzene to 0.8-5 moles of benzyl alcohol in the presence of an amount of activated bleaching earth of 0.05-5% by weight, relative to the amount of benzyl alcohol, at a temperature between 90.degree. C. and 140.degree. C. in the presence of a diluent.Type: GrantFiled: October 11, 1989Date of Patent: May 29, 1990Assignee: Bayer AktiengesellschaftInventors: Kurt Klinkmann, Michael Herzhoff, Gerhard Burmeister
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Patent number: 4929786Abstract: Preparation of 1-aryl-1-alkenes by dehydration of 1-aryl-1-alkanols in the presence of a substance promoting elimination of water, the substance being a triester of phosphorous acid in which at least one of the radicals is an aryl group.The products are suitable as, inter al., initiators for anionic polymerization.Type: GrantFiled: October 28, 1988Date of Patent: May 29, 1990Assignee: BASF AktiengesellschaftInventors: Walter Himmele, Kaspar Bott, Klaus Bronstert