Patents Examined by Bruce D. Gray
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Patent number: 4831195Abstract: Processes and apparatus for converting methanol or the like to intermediate olefins and etherification products, such as methyl t-butyl ether by extracting crude methanol feedstock with an olefinic liquid hydrocarbon stream containing C.sub.4 + iso-olefins. The extract phase is reacted under etherification conditions. The aqueous methanol raffinate stream is converted catalytically to olefins for recovery of C.sub.4 + olefinic liquid hydrocarbons useful as extraction solvent.Type: GrantFiled: November 24, 1987Date of Patent: May 16, 1989Assignee: Mobil Oil CorporationInventors: Mohsen N. Harandi, Hartley Owen
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Patent number: 4831188Abstract: Peresters of the formula: R.sub.1 Ar COOOR wherein R is an alkyl group; Ar is selected from the group including phenyl (unsubstituted or substituted) groups, naphthyl groups, anthryl groups, pyryl groups, phenanthryl groups, or heterocyclic groups; and R.sub.1 is any group absorbing radiation between 250 and 800 nm such that R.sub.1 produces an excited state of sufficient lifetime to cause the decomposition to free radicals of the appended perester or peroxidic function.Type: GrantFiled: January 20, 1987Date of Patent: May 16, 1989Assignee: Bowling Green State UniversityInventor: Douglas C. Neckers
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Patent number: 4829086Abstract: New soft .beta.-adrenergic blocking agents, useful in the treatment or prevention of cardiovascular disorders and in the treatment of glaucoma, have the formula ##STR1## wherein n is an integer from 0 to 10; R is C.sub.6 -C.sub.12 cycloalkyl-C.sub.p H.sub.2p --, C.sub.6 -C.sub.18 polycycloalkyl-C.sub.p H.sub.2p --, C.sub.6 -C.sub.18 polycycloalkenyl-C.sub.p H.sub.2p -- or C.sub.6 C.sub.12 cycloalkenyl-C.sub.p H.sub.2p -- (wherein p is 0, 1, 2 or 3), or together with the adjacent ##STR2## group represents a variety of other complex ester groupings; R.sub.1 is C.sub.1 -C.sub.7 alkyl; and Ar is a divalent radical containing at least one aromatic nucleus. The corresponding pharmaceutically acceptable acid addition salts are also described.Type: GrantFiled: October 23, 1986Date of Patent: May 9, 1989Inventor: Nicholas S. Bodor
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Patent number: 4828764Abstract: N-fluoro-N-perfluoromethyl sulfonamide compounds are provided as fluorinating agents for the fluorination of organic compounds by either the direct electrophilic fluorination of organic compounds or by the fluorination of organic compound carbanions.Type: GrantFiled: June 18, 1987Date of Patent: May 9, 1989Assignee: Research CorporationInventor: Darryl D. DesMarteau
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Patent number: 4826627Abstract: Synthesis gas is produced by the partial oxidation of a feedstock comprising petroleum coke and/or heavy liquid hydrocarbonaceous fuel containing sulfur and having an ash that contains nickel, vanadium and silicon. An iron-containing additive is introduced into the reaction zone along with the feed. A first portion of the additive combines with at least a portion of the nickel, iron and sulfur constituents found in the feedstock to produce a first liquid phase washing agent. A second portion of the additive combines with at least a portion of the silicon, aluminum, calcium, sodium, and/or potassium and iron constituents found in the feedstock to produce a second liquid phase washing agent. The first and second liquid phase washing agents collect and transport at least a portion of the vanadium-containing oxide laths and spinels and other ash components out of the reaction zone.Type: GrantFiled: May 19, 1987Date of Patent: May 2, 1989Assignee: Texaco Inc.Inventor: Mitri S. Najjar
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Patent number: 4827028Abstract: Described are anionic surfactants which are made by (1) reacting maleic acid, fumaric acid, itaconic acid or mixtures thereof with at least one selected epoxy-capped poly(oxyalkylated) alcohol in the presence of a peroxy-type free radical initiator to form a carboxylic acid group-containing addition product and (2) neutralizing said addition product with a sufficient amount of a neutralizing agent to convert at least a major proportion of said carboxylic acid groups to salt groups. These surfactants exhibit excellent surface activity as well as being highly soluble in caustic solutions.Type: GrantFiled: April 23, 1984Date of Patent: May 2, 1989Assignee: Olin CorporationInventors: Michael Scardera, Richard M. Mullins
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Patent number: 4827021Abstract: Disclosed is an improved process for the preparation of alkyl 3-alkoxypropionates by the reaction of a dialkoxymethane with a diketene in the presence of methanedisulfonic acid, methanetrisulfonic acid or mixture thereof.Type: GrantFiled: March 7, 1988Date of Patent: May 2, 1989Assignee: Eastman Kodak CompanyInventors: Glenn C. Jones, William D. Nottingham, Peter W. Raynolds
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Patent number: 4824670Abstract: The present invention relates to new carbazates of the general formula (I), ##STR1## wherein A is C.sub.3-10 alkyl, C.sub.3-10 alkenyl, C.sub.2-10 haloalkyl, trifluoromethyl, phenyl-C.sub.1-3 alkyl, phenyl-C.sub.2-3 -alkenyl, naphthyl-C.sub.1-3 alkyl; phenyl optionally substituted by one or more identical or different substituent(s) selected from C.sub.1-4 alkyl, halogen, C.sub.1-4 alkoxy and hydroxy; C.sub.3-7 cycloalkyl-C.sub.1-3 alkyl; optionally nitro-substituted furyl; diphenyl-hydroxy-methyl or indazolyl optionally substituted by one or more C.sub.1-4 alkoxy group(s) andR represents C.sub.1-4 alkyl,with the proviso that if R stands for ethyl, A is other than tertiary butyl, and acid addition salts thereof, a process for the preparation thereof and feed-additives comprising the same.The compounds of the general formula (I) may be used in animal husbandry due to their weight-gain increasing and fodder utilization improving effect.Type: GrantFiled: December 11, 1985Date of Patent: April 25, 1989Assignee: Egis GyogyszergyarInventors: Ildiko Ratz nee Simonek, Pal Benko, Edit Bernenyi nee Poldermann, Karoly Magyar
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Patent number: 4824995Abstract: A poly-p-phenylamino carboxylate having the following structure: ##STR1## wherein n is greater than 1; R is a C.sub.1 to C.sub.6 alkyl group; and R.sub.1 and R.sub.Type: GrantFiled: May 9, 1988Date of Patent: April 25, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventor: Neville E. Drysdale
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Patent number: 4824997Abstract: A method of carbonylation of formaldehyde is disclosed. In the method, an aqueous formaldehyde concentrate comprising between about 60% by weight and about 85% by weight formaldehyde, carbon monoxide and sulfuric acid are brought together in the absence of an effective amount of added Group IB cocatalyst in a reaction zone under a carbon monoxide partial pressure in the reaction zone of not greater than about 1.72.times.10.sup.7 N/M.sup.2. A carbonylation reaction is thereby effected in which a carbonylation product is produced comprising at least about 2% by weight sulfuric acid and a mixture of compounds of the formula:HO(CH.sub.2 COO).sub.n Hwherein n is a positive integer of at least 1. Also disclosed is a method for preparation of an alkyl glycolate by esterification of the carbonylation reaction mixture.Type: GrantFiled: January 25, 1988Date of Patent: April 25, 1989Assignee: Monsanto CompanyInventors: Alistair MacFarlane, David R. Dyroff, Robert V. Brill
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Patent number: 4822912Abstract: 2,3,5,6-Tetrafluorobenzoic acid is prepared by hydrogenolysis of pentafluorobenzoic acid (esters).Type: GrantFiled: February 10, 1988Date of Patent: April 18, 1989Assignee: Bayer AktiengesellschaftInventors: Klaus Naumann, Rudolf Braden, Heinz Ziemann
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Patent number: 4822907Abstract: A process for recovering .alpha.-L-aspartyl-L-phenylalanine methyl ester from a solution containing various methyl ester or demethylated derivatives of .alpha.-L-aspartyl-L-phenylalanine methyl ester and chloride ions is disclosed. This process uses a reverse osmosis membrane having a specific chloride inhibition rate to desalt and concentrate a solution containing a specified ratio of .delta.-L-aspartyl-L-phenylalanine methyl ester to its derivatives until a specific weight ratio of organic chloride ion to the sum of .alpha.-L-aspartyl-L-phenylalanine methyl ester and its derivatives is obtained. This desalted and concentrated solution is then contacted with an aqueous solvent containing methanol and hydrochloride acid to recover high yields of .alpha.-L-aspartyl-L-phenylalanine methyl ester hydrochloride.Type: GrantFiled: June 3, 1987Date of Patent: April 18, 1989Assignee: Ajinomoto Co., Inc.Inventors: Katsumi Sugiyama, Takashi Yamashita, Toshihide Yukawa
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Patent number: 4820730Abstract: Amidine compounds of formula (I) ##STR1## and the pharmaceutically acceptable acid addition salts thereof are novel and are of use as anti-trypsin, anti-plasmin, anti-kallikrein, anti-thrombin and anti-complement agents which may be administered orally. These amidine compounds can be produced by the reaction between a carboxylic acid compound of formula (II) ##STR2## or a reactive intermediate thereof and 6-amidino-2-naphthol of formula (III) ##STR3## or preferably an acid addition salt thereof.Type: GrantFiled: July 11, 1988Date of Patent: April 11, 1989Assignee: Torii & Co., Ltd.Inventors: Setsurou Fujii, Toshiyuki Okutome, Toyoo Nakayama, Shigeki Nunomura, Kimio Sudo, Shinichi Watanabe, Masateru Kurumi, Takuo Aoyama
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Patent number: 4820737Abstract: Ophthalmic compositions useful as tear stimulants when topically applied to the eye for effective treatment of dry eye syndrome.Type: GrantFiled: March 16, 1988Date of Patent: April 11, 1989Assignee: University of Iowa Research FoundationInventors: Ronald D. Schoenwald, Charles F. Barfknecht
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Patent number: 4820861Abstract: N-formyl-.alpha.-L-aspartyl-L-phenylalanine methyl ester is obtained by reacting L-phenylalanine methyl ester with N-formyl-L-aspartic acid anhydride in a reaction solvent containing acetic acid or acetic acid and formic acid in a complete mixing type continuous reaction mode.Type: GrantFiled: November 17, 1986Date of Patent: April 11, 1989Assignee: Ajinomoto Co., Inc.Inventors: Toshihide Yukawa, Haruo Kawasaki, Masao Nakamura, Takashi Yamashita, Toshiaki Tsuji
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Patent number: 4814511Abstract: Cyclohexyl hydroperoxide containing reaction mixtures obtained by oxidation of cyclohexane with molecular oxygen or molecular oxygen containing gases in the liquid phase at from 130.degree. to 200.degree. C. and under from 5 to 125 bar are worked up by reaction with cycloolefins at elevated temperature in the presence of catalysts to react cyclohexyl hydroperoxide with cyclohexene at elevated temperatures in the presence of cyclohexene-soluble compounds of transition metals of groups 4 or 5 or 6 of the periodic table or of one or more cyclohexane-insoluble compounds of a transition metal of group 4 or 5 or 6, or in the presence of selenium, tellurium or a boride, and the resulting cyclohexene oxide at elevated temperatures to cyclohexanol in the presence of hydrogenation catalysts.Type: GrantFiled: October 23, 1987Date of Patent: March 21, 1989Assignee: BASF AktiengesellschaftInventors: Gerald Neubauer, Rolf Schnabel, Juergen Hartig, Josef Ritz
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Patent number: 4814491Abstract: The invention relates to hemiacetals of glyoxylic esters and to a process for obtaining a glyoxylic ester having a C.sub.1 to C.sub.4 ester group from a mixture which essentially contains a glyoxylic ester of this type plus water and/or a C.sub.1 to C.sub.4 alcohol ROH. In this, the glyoxylic ester and the water and/or the alcohol are partly or completely in a chemically bonded form. A higher alcohol R'OH having a boiling point above 180.degree. C. is added, and distillation is carried out under a pressure not exceeding 800 mbar to remove first the water and/or the alcohol ROH and then the glyoxylic ester.Type: GrantFiled: May 11, 1988Date of Patent: March 21, 1989Assignee: Hoeschst AktiengesellschaftInventors: Robert K. Driscoll, Ernst I. Leupold, Joachim Schutz
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Patent number: 4814486Abstract: The present invention relates to an improved method for the preparation of anilinofumarates useful as intermediates in the preparation of 2-(2-imidazolin-2-yl) quinoline-3-carboxylic acid herbicidal agents.Type: GrantFiled: October 1, 1987Date of Patent: March 21, 1989Assignee: American Cyanamid CompanyInventors: Donald R. Maulding, Albert A. Cevasco
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Patent number: 4812593Abstract: Bifunctional compounds of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each alkyl of 1 to 6 carbon atoms, R.sup.2 and R.sup.3 may furthermore be hydrogen, R.sup.2 is furthermore alkoxy and R.sup.4 is hydrogen, alkyl of 1 to 6 carbon atoms or alkoxy, and a double bond may be present between carbon atoms 2 and 3, are prepared by converting a tetraalkoxyalkane or a dialkoxyalkanoate of the formulae ##STR2## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the above meanings, in the presence of a catalyst, such as a zeolite, in particular one of the pentasil type, and/or a phosphate and/or phosphoric acid on a carrier.Type: GrantFiled: August 6, 1987Date of Patent: March 14, 1989Assignee: BASF AktiengesellschaftInventors: Wolfgang Hoelderich, Norbert Goetz, Leopold Hupfer
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Patent number: 4812592Abstract: The invention concerns a process for the preparation of the esters of an alkyltartronic acid by direct oxidation, with O.sub.2 or the like, at 30.degree.-200.degree. C., of the corresponding alkyl-malonic esters, in the presence of a catalytic system, comprising a salt of a transition metal, selected from Mn, Fe, Co and Cu, and an alkali-metal salt of an aliphatic carboxylic acid, optionally in the presence of a polar solvent.Type: GrantFiled: January 8, 1987Date of Patent: March 14, 1989Assignees: Istituto Guido Donegani, S.p.A., Consiglio Nazionale Delle RicercheInventors: Roberto Santi, Giuseppe Cometti, Anselmo Pagani