Nitrogen Double Bonded Directly To Carbon Patents (Class 556/32)
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Publication number: 20030166975Abstract: Process for preparing 1-methoxy-2-propanol by reacting propylene oxide with methanol in the presence of a racemic catalyst which comprises an asymmetric polydentate (tetradentate) ligand complexed with a metal atom, where the complex has an approximately planar geometry.Type: ApplicationFiled: December 4, 2002Publication date: September 4, 2003Applicant: BASF AktiengesellschaftInventor: Joaquim Henrique Teles
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Patent number: 6602441Abstract: Compounds of the following formula are suitable as activators for peroxy compounds in laundry detergents and cleaning products: [LnMmXp]zYq (1) in which M is manganese in oxidation stage II, III, IV, V and/or VI or cobalt in oxidation stage II and/or III, X is a coordination group or bridging group, Y is a counterion in the corresponding stoichiometric amount to balance a charge z present, where z as the metal complex charge, can be positive, zero or negative, n and m, independently of one another, are integers of from 1 to 4, p is an integer from 0 to 15, q is z/charge of Y L is a ligand of the formula (2) in which substituents R1 to R8 are as defined in the description.Type: GrantFiled: July 10, 2000Date of Patent: August 5, 2003Assignee: Clariant GmbHInventor: Bernd Nestler
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Publication number: 20030139627Abstract: Disclosed is a process for the enantioselective production of an optically active amino compound by the amination of the C—H bond of an organic compound. The amino compound is produced by converting the C—H bond at the allyl position of an alkene or the C—H bond at the benzyl position of an alkylarene to the corresponding C—N bond, using a salen-manganese complex as the catalyst and N-substituted iminoaryliodinane as the amination agent. Both the catalytic activity and the enantioselectivity are very high when there is used a catalyst in which the 3- and 5-positions of the salicylaldehyde moiety of the salen ligand are substituted with an electron-withdrawing group, particularly with a halogen atom.Type: ApplicationFiled: November 7, 2002Publication date: July 24, 2003Inventors: Tsutomu Katsuki, Yoshinori Kohmura
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Patent number: 6590048Abstract: The present invention describes the use of cationic vinylidene, allenylidene and higher cumulenylidene complexes of ruthenium or osmium as catalysts or catalyst precursors for olefin metathesis reactions of all types, as well as to new cationic allenylidene complexes of ruthenium and osmium which can be used as metathesis catalysts with preferred embodiment. These catalysts or catalyst precursors are easy to prepare from well accessible, stable and essentially non toxic starting materials, can be isolated and stored, they exhibit a high catalytic activity, a good compatibility with functional groups, solvents, water and additives, and they need not to be activated by any additive.Type: GrantFiled: January 2, 2001Date of Patent: July 8, 2003Assignee: Studiengesellschaft Kohle mbHInventors: Alois Fürstner, Pierre Dixneuf, Christian Bruneau, Michel Picquet
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Patent number: 6589948Abstract: This invention provides antioxidant cyclic salen-metal compounds, compositions of such antioxidant cyclic salen-metal compounds having superoxide activity, catalase activity and/or peroxidase activity and methods of using such antioxidant cyclic salen-metal compositions to treat or prevent a disease associated with cell or tissue damage produced by free radicals, such as superoxide.Type: GrantFiled: November 28, 2000Date of Patent: July 8, 2003Assignee: Eukarion, Inc.Inventors: Bernard Malfroy-Camine, Susan Doctrow
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Publication number: 20030105250Abstract: This invention relates to a method to oligomerize ethylene comprising combining ethylene with a catalyst system comprising an activator and one or more phenoxide group metal compounds represented by the formula: 1Type: ApplicationFiled: November 19, 2002Publication date: June 5, 2003Inventor: Gregory T. Whiteker
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Publication number: 20030100763Abstract: A process for the preparation of manganese complexes of salen compounds which comprises carrying out the reaction of a salen compound with a manganese compound in DMF is described. In a preferred embodiment, the salen compound itself is synthesised likewise in DMF and reacted without intermediate isolation to form the manganese complex.Type: ApplicationFiled: January 2, 2003Publication date: May 29, 2003Inventors: Gerhard Beck, Claus Korhummel, Hanspeter Baier, Frank Bachmann, Cornelia Makowka, Reiner Linde, Bernd Kirrmann
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Patent number: 6541594Abstract: The invention provides coating compositions comprising a reactive component (a) which is substantially free of any heteratoms and is a not a crystalline solid at room temperature and which comprises from (i) 12 to 72 carbon atoms, and (ii) at least two functional groups, and (b) a crosslinking agent comprising a plurality of functional groups (iii) reactive with the functional groups (ii) of compound (a), wherein functional groups (ii) and (iii) are selected such that reaction there between produces a thermally irreversible chemical linkage. The coating compositions of the invention provide improved solids, chip resistance, flexibility and/or scratch & mar resistance while maintaining desirable and/or improved performance characteristics with regard to environmental etch, relative humidity, QCT, chip resistance, thermoshock resistance, cold crack resistance, adhesion and the like.Type: GrantFiled: December 19, 2000Date of Patent: April 1, 2003Assignee: BASF CorporationInventors: Walter H. Ohrbom, John A. Gilbert, Patricia A. Herrel, Marvin L. Green, Joanne Casale, Thomas G. Savino
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Publication number: 20030060584Abstract: Bis(salicylaldminato)titanium complex with optionally substituted phenyl or cyclohexyl on nitrogen catalyzes highly syndiospecific polymerization of propylene. Syndiotactic polypropylene with defects of the type rmr having [rrrr] content greater than 0.70 and block copolymer containing block(s) of the syndiotactic polypropylene and block(s) of poly(ethylene-co-propylene) and/or poly(alpha-olefin-co-propylene) are obtained. Certain of the catalysts provide living polymerization. Living olefin polymers and olefin terminated oligomers and polymers are also products.Type: ApplicationFiled: September 18, 2001Publication date: March 27, 2003Inventors: Geoffrey W. Coates, Jun Tian, Phillip D. Hustad
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Publication number: 20030055186Abstract: Substituted cyclopentenes, such as alkyl cyclopentenes, are polymerized by selected &agr;-imine complexes of nickel and palladium. The polymers are useful as molding resins or elastomers. Also disclosed herein are novel catalysts for the polymerization of cyclopentenes to form novel higher melting homopolycyclopentenes.Type: ApplicationFiled: April 2, 2001Publication date: March 20, 2003Inventors: Stephan J. McLain, Elizabeth F. McCord, Alison M. Bennett, Steven D. Ittel, Mark F. Teasley
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Publication number: 20030055187Abstract: Polyethylene is formed by contacting ethylene with a novel iron or cobalt complex of a selected 1,4,7-triaza-3-oxa-1,4,6-heptatriene or 2,5,8-triaza-1,8-nonadiene, optionally in the presence of a cocatalyst such as an alkylaluminum compound. The polymers formed as useful for molding and in films.Type: ApplicationFiled: July 31, 2002Publication date: March 20, 2003Inventor: Lynda Kaye Johnson
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Patent number: 6531424Abstract: Olefins, such as ethylene, are polymerized using as a polymerization catalyst a complex of a selected transition metal with a monoanionic ligand that has at least three atoms that may coordinate to the transition metal. Also disclosed are the above selected transition metal complexes, and intermediates thereto.Type: GrantFiled: December 13, 2000Date of Patent: March 11, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Steven Dale Ittel, Ying Wang
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Publication number: 20030032821Abstract: The present invention relates to chiral salen catalysts and a process for preparing chiral compounds from racemic epoxides by using them. More particularly, the present invention is to provide chiral salen catalysts and its use for producing chiral compounds such as chiral epoxides and chiral 1,2-diols economically in high yield and high optical purity by performing stereoselective hydrolysis of racemic epoxides, wherein the chiral salen catalyst comprises a cationic cobalt as a center metal of chiral salen ligand and counterions having weak nucleophilic property to resolve disadvantages associated with conventional chiral salen catalysts, and can be used continuously without any activating process of used catalysts because it does not loose a catalytic activity during the reaction process.Type: ApplicationFiled: July 11, 2002Publication date: February 13, 2003Inventors: Geon-Joong Kim, Dae-Woon Park, Ho Seong Lee, Jin Won Yun, Seong Jin Kim
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Patent number: 6511936Abstract: The present invention relates to catalyst systems, processes for making such catalysts, intermediates for such catalysts, and olefin polymerization processes using such catalysts wherein such catalyst includes a component represented by the following formula 1A: wherein R and R′ independently represent a hydrogen atom, or a substituted or unsubstituted, branched or unbranched hydrocarbyl or organosilyl radical; R1, R2, and R3 independently represent a hydrogen atom, or a substituted or unsubstituted, branched or unbranched hydrocarbyl radical; M is a group IIIB, IVB, VB, VIB, VIIB or VIII transition metal; T independently represents a univalent anionic ligand such as a hydrogen atom, or a substituted or unsubstituted hydrocarbyl halogeno, aryloxido, arylorganosilyl, alkyloriganosilyl, amido, arylamido, phosphido, or arylphosphido group, or two T groups taken together represent an alkylidene or a cyclometallated hydrocarbyl bidentate ligand; L independently represents a sigma donorType: GrantFiled: August 13, 1999Date of Patent: January 28, 2003Assignees: University of Delaware, Chevron Chemical Co.Inventors: Klaus H. Theopold, Woo-Kyu Kim, Leonard A. MacAdams, John M. Power, Javier M. Mora, Albert P. Masino
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Publication number: 20030018145Abstract: Catalyst for polymerization of an olefin is provided, which comprises (A) a transition metal compound having a carbon-metal bond structure and (B) an activating co-catalyst, or (A) a transition metal compound having a carbon-metal bond structure, (B) an activating cocatalyst and (C) an organometallic compound.Type: ApplicationFiled: March 12, 2002Publication date: January 23, 2003Applicant: TOSOH CORPORATIONInventors: Masao Tanabiki, Hideo Nagashima
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Patent number: 6458980Abstract: Chelating agents (chelants) of the general structure: wherein: n=2-4 X=—CR1R2—, or whereby at least two of X are of formula III Y=COOH, —PO3H2 or o-hydroxyphenyl R1, R2 and R3 are independently H or C1-C8 alkyls m=1, 2 or 3 and most preferably m=1 Z and Z1 are unsubstituted or substituted C C*=C or CH or N Z1, Z2, Z′1, and Z′2 are independently selected from H (or nothing for Z2 and Z′2 if C* is N) and C1-C10 groups that optionally contain one or more N atoms (optionally attached directly to C*), whereby one of the pairs Z/Z1, Z/Z2 and Z1/Z2 and one of the pairs Z′/Z′1, Z′1/Z′2 and Z′/Z′2 may be connected to form substituted or unsubstituted (hetero)(poly)cyclic structures of less than 20 atoms. C* is either part of an aromatic (hetero)(poly)cyclic structure or linked by a double bond to Z or Z2 and/or Z′ or Z′2.Type: GrantFiled: April 7, 2000Date of Patent: October 1, 2002Assignee: Akzo Nobel NVInventors: Christer L. Hakanson, Martin Heus
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Publication number: 20020120160Abstract: A transition metal compound having a ligand with an azaferrocene structure or a ferrocene structure. The transition metal compound is used in combination with an activating cocatalyst, as a catalyst for polymerization of olefins.Type: ApplicationFiled: December 20, 2001Publication date: August 29, 2002Applicant: TOSOH CORPORATIONInventors: Makoto Watanabe, Takashi Okada, Morihiko Sato, Satoshi Hamura, Masao Tanabiki
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Patent number: 6433270Abstract: ORGANOMETALLIC COORDINATION complexes exhibiting two separate, stable forms are described. Conversion from one form to the other is intramolecular, reversible, light-activated (a molecular switch) and occurs both in the solid and in solution. The two forms differ in photochemical and electrochemical characteristics (different colors and reduction potentials). The complexes can be used in information storage and for light-gathering, light-emitting, sensing and detecting applications.Type: GrantFiled: September 25, 2000Date of Patent: August 13, 2002Assignee: California Institute of TechnologyInventor: Jeffrey J. Rack
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Publication number: 20020035031Abstract: The present invention relates to a process for the polymerization and copolymerization of 1-olefins and to a catalyst to be used in said process wherein the catalyst comprises (1) a complex having formula (I) wherein M is Fe[II], Fe[III], Co[I], Co[II], Co[III], Mn[I], Mn[II], Mn[III], Mn[IV], Ru[II], Ru[III] or Ru[IV]; X represents an atom or group covalently or ionically bonded to the metal M; T is the oxidation state of the metal; b is the valency of the atom or group X; and R 1 to R 7 are each independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl, substituted heterohydrocarbyl or SiR′ 3 where each R′ is independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl, substituted heterohydrocarbyl; and when any two or more of R 1 to R 7 are hydrocarbyl, substituted hydrocarbyl, heterohydrocType: ApplicationFiled: April 24, 2001Publication date: March 21, 2002Inventors: Alain Berardi, John Gabriel Speakman
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Publication number: 20010037036Abstract: There is disclosed chiral copper complex catalyst composition, which is obtained by contacting an optically active N-salicylideneaminoalcohol compound of formula (1): 1Type: ApplicationFiled: January 23, 2001Publication date: November 1, 2001Inventors: Gohfu Suzukamo, Makoto Itagaki, Michio Yamamoto
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Patent number: 6310149Abstract: A catalyst is provided for addition polymerization of olefinically unsaturated monomers comprising a first compound MY, wherein M is a transition metal in a low valency state or a transition metal in a low valency state coordinated to at least one coordinating non-charged ligand, Y is a monovalent, divalent or polyvalent counterion; an initiator compound comprising a homolytically breakable bond with a halogen atom; and an organodiimine, where at least one of the nitrogens of the diimine is not part of an aromatic ring.Type: GrantFiled: February 1, 1999Date of Patent: October 30, 2001Assignee: University of WarwickInventor: David Mark Haddleton
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Patent number: 6300521Abstract: The present invention relates to a process for preparing 3,5, 5-trimethylcyclohex -2-ene-1,4-dione (oxoisophorone; OIP) by oxidation of 3,5,5-trimethylcyclohex-3-en-1-one (&bgr;-isophorone, &bgr;-IP) with molecular oxygen in the presence of a solvent, of a base and of a manganese salen derivative as catalyst.Type: GrantFiled: June 21, 2000Date of Patent: October 9, 2001Assignee: BASF AktiengesellschaftInventors: Martin Jochen Klatt, Thomas Müller, Bernhard Bockstiegel
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Publication number: 20010027162Abstract: A transition metal compound represented by the general formula (2) or (3) described below, a catalyst component for olefin polymerization comprising said transition metal compound, a catalyst component for olefin polymerization using said transition metal compound and (C) and/or (D) described below, and a process for producing an olefinic polymer wherein olefins are homopolymerized or olefins are copolymerized with other olefins and/or other polymerizable unsaturated compound using said catalyst for olefin polymerization.Type: ApplicationFiled: May 18, 2001Publication date: October 4, 2001Inventors: Wataru Hirahata, Makoto Itagaki, Kotohiro Nomura
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Publication number: 20010014646Abstract: Provided are certain transition metal complexes which are useful as catalysts in the polymerization of olefinic monomers. In particular, the invention provides complexes of certain bidentate ligands bonded to Ni, Pd, Co, or Fe, and optionally, one or more neutral Lewis acids, and their use in the polymerization of olefins.Type: ApplicationFiled: March 2, 2001Publication date: August 16, 2001Inventors: Peter Borden Mackenzie, Christopher Moore Killian, Leslie Shane Moody, Jason Patrick McDevitt
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Patent number: 6183709Abstract: The invention is directed to a process for the separation of oxygen from an oxygen containing gas using an oxygen selective material comprising a transition element complex comprising a first transition element ion and one or more chelating ligands, wherein: i) said first transition element ion is capable of accepting intermolecular donation; ii) said chelating ligand or ligands provides up to four intramolecular donor sites to said transition element ion; iii) said chelating ligand or ligands provides an intermolecular donor site to a second transition element ion which is contained in second discrete transition element complex; and iv) said chelating ligand or ligands contains at least one substituent that inhibits &mgr;-peroxo dimer formation on said sorbent; wherein when said material is in deoxy form, the total number of donor sites to said first transition element ion is five.Type: GrantFiled: January 4, 1999Date of Patent: February 6, 2001Assignee: Praxair Technology, Inc.Inventors: Neil Andrew Stephenson, Paula Marie Chinn Stephenson
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Patent number: 6139769Abstract: Compounds of the following formula are suitable as activators for peroxy compounds in laundry detergents and cleaning products:[L.sub.n M.sub.m X.sub.p ].sup.z Y.sub.q (1)in whichM is manganese in oxidation stage II, III, IV, V and/or VI or cobalt in oxidation stage II and/or III,X is a coordination group or bridging group,Y is a counterion in the corresponding stoichiometric amount to balance a charge z present, wherez as the metal complex charge, can be positive, zero or negative,n and m, independently of one another, are integers of from 1 to 4,p is an integer from 0 to 15,q is z/charge of YL is a ligand of the formula (2) ##STR1## in which substituents R.sup.1 to R.sup.8 are as defined in the description.Type: GrantFiled: April 2, 1998Date of Patent: October 31, 2000Assignee: Clariant GmbHInventor: Bernd Nestler
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Patent number: 6114483Abstract: Mixtures of different polyolefins or branched polyolefins may be made by direct, preferably simultaneous, polymerization of one or more polymerizable olefins using two or more transition metal containing active polymerization catalyst systems, one of which contains preferably late transition metals complexed to selected ligands. The polyolefin products may have polymers that vary in molecular weight, molecular weight distribution, crystallinity, or other factors, and are useful as molding resins and for films.Type: GrantFiled: August 25, 1998Date of Patent: September 5, 2000Assignee: E. I. du Pont de Nemours and CompanyInventors: Edward Bryan Coughlin, Samuel David Arthur, Steven Dale Ittel
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Patent number: 6114481Abstract: A catalyst system comprises an organometallic complex of a group 4 metal having a ketimide ligand. The organometallic complex preferably also contains a cyclic ligand which forms a delocalized pi-bond with the metal (such as a cyclopentadienyl-type ligand). Preferred organometallic complexes may be activated with a so-called "substantially non coordinating anion" to form a low cost cocatalyst system which is excellent for the preparation of olefin copolymers having both high molecular weight and very low density.Type: GrantFiled: August 26, 1998Date of Patent: September 5, 2000Assignee: Nova Chemicals (International) S.A.Inventors: John McMeeking, Xiaoliang Gao, Rupert Edward von Haken Spence, Stephen John Brown, Dusan Jeremic
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Group II MOCVD source reagents, and method of forming Group II metal-containing films utilizing same
Patent number: 6111122Abstract: Novel Group II metal MOCVD precursor compositions are described having utility for MOCVD of the corresponding Group II metal-containing films. The complexes are Group II metal .beta.-diketonate Lewis base adducts having ligands such as: (i) amines bearing terminal NH.sub.2 groups; (ii) imine ligands formed as amine (i)/carbonyl reaction products; (iii) combination of two or more of the foregoing ligands (i)-(ii), and (iv) combination of one or more of the foregoing ligands (i)-(ii) with one or more other ligands or solvents. The source reagent complexes of barium and strontium are usefully employed in the formation of barium strontium titanate and other Group II doped thin-films on substrates for microelectronic device applications, such as intearated circuits, ferroelectric memories, switches, radiation detectors, thin-film capacitors, microelectromechanical structures (MEMS) and holoaraphic storage media.Type: GrantFiled: April 28, 1998Date of Patent: August 29, 2000Assignee: Advanced Technology Materials, Inc.Inventors: Witold Paw, Thomas H. Baum -
Patent number: 6069237Abstract: New metallocene ligand systems and catalysts/catalyst precursors are described where the ligand system contains at least one open-pentadienyl ligand characterized by an acyclic six .pi. electron delocalized, five atomic center structure. The open pentadienyl ligand is bonded to either another pentadienyl ligand or a Cp ligand by a bridging group. The metal is from group 3-5 or the Lanthanides. These metallocene catalysts/catalyst precursors optionally in combination with co-catalysts can be used to generate a wide variety of different polymer types including HDPE, LLDPE, LHDPE, ethylene/propylene elastomers, tactiospecific C3+ .alpha.-olefins, intimate mixture thereof and the like.Type: GrantFiled: September 11, 1995Date of Patent: May 30, 2000Assignee: Montell Technology Company BVInventors: John A. Ewen, Robert W. Strozier
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Patent number: 6008190Abstract: The invention relates to novel cobalt compounds, having a general structure ##STR1## wherein Co is either Co(II) or Co(III), and each of the R groups is selected from the group consisting of hydrogen, alkyl, hydrophilic organic acid, alkyl amine, amine, alkyl alcohol, alcohol, polypeptide or nucleic acid. The invention further relates to methods of using such compounds to reduce the biological activity of proteins, particularly enzymes and zinc finger-containing proteins.Type: GrantFiled: December 12, 1995Date of Patent: December 28, 1999Assignee: California Institute of TechnologyInventors: Thomas J. Meade, Toshihiko Takeuchi, Harry B. Gray, Melvin Simon, Angelique Y. Louie
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Patent number: 6001284Abstract: An organic EL device which is excellent in stability in the repetitive operation and has a high light emission brightness can be obtained from a gallium complex of the general formula (1), ##STR1## wherein each of Q.sup.1 and Q.sup.2 is independently a ligand of the general formula (2); and L is a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic ring group, --OR.sup.1 in which R.sup.1 is a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic ring group, or --O--Ga--Q.sup.3 (Q.sup.4) in which Q.sup.3 and Q.sup.4 have the same meanings as those of Q.sup.1 and Q.sup.2, ##STR2## wherein A.sup.1 and A.sup.2 are substituted or unsubstituted six-membered aryl rings which are mutually fused to form a fused ring moiety.Type: GrantFiled: July 31, 1996Date of Patent: December 14, 1999Assignee: Toyo Ink Manufacturing Co., Ltd.Inventors: Toshio Enokida, Michiko Tamano, Satoshi Okutsu
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Patent number: 5965678Abstract: The present invention relates to a catalyst system based on monoazadiene metal complexes of the formula ##STR1## and a co-catalyst suitable for activating the metal complex, and to the use of the catalyst system for the polymerization of unsaturated compounds, especially for the polymerization and copolymerization of olefins and/or dienes.The novel catalyst system is characterised in particular by its ease of access, its lack of sensitivity to external influences and its ease of handling.Type: GrantFiled: June 12, 1998Date of Patent: October 12, 1999Assignee: Bayer AGInventors: Sigurd Becke, Heike Windisch, Joachim Scholz, Steffen Kahlert
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Patent number: 5847190Abstract: The present invention relates to dendritic, nitrogen-containing organic compounds containing at least 4 planar-chiral or axial-chiral groups, where these planar-chiral or axial-chiral groups are linked as Schiff's bases to the primary amino groups of compounds of the formula (I)(R.sup.1 R.sup.1)N--X--N(R.sup.1 R.sup.1) (I)whereR.sup.1 is (R.sup.2 R.sup.2)N--(CH.sub.2).sub.2 -- or (R.sup.2 R.sup.2)N--(CH.sub.2).sub.3 --,R.sup.2 is hydrogen or (R.sup.3 R.sup.3)N--CH.sub.2).sub.2 -- or (R.sup.3 R.sup.3)N--(CH.sub.2).sub.3 --,R.sup.3 is hydrogen or (R.sup.4 R.sup.4)N--(CH.sub.2).sub.2 -- or (R.sup.4 R.sup.4)N--(CH.sub.2).sub.3 --,R.sup.4 is hydrogen or (R.sup.5 R.sup.5)--N--(CH.sub.2).sub.2 -- or (R.sup.5 R.sup.5)N--(CH.sub.2).sub.3 --,R.sup.5 is hydrogen or (R.sup.6 R.sup.6)N--(CH.sub.2).sub.2 -- or (R.sup.6 R.sup.6)N--(CH.sub.2).sub.3 -- andR.sup.6 is hydrogen,X is an aliphatic and/or aromatic group, which may contain heteroatoms,which are suitable as catalysts for asymmetrical homogeneous catalysis.Type: GrantFiled: May 20, 1997Date of Patent: December 8, 1998Assignee: BASF AktiengesellschaftInventors: Wolfgang Paulus, Fritz Vogtle, Jorg Issberner
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Patent number: 5834509Abstract: This invention provides salen-manganese complexes and pharmaceutically acceptable compositions thereof useful as antioxidants and free radical scavengers.Type: GrantFiled: June 7, 1995Date of Patent: November 10, 1998Assignee: Eukarion, Inc.Inventors: Bernard Malfroy-Camine, Susan Robin Doctrow
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Patent number: 5756790Abstract: The invention provides a method for preparing an optically active alcohol comprising the step of reacting a ketone compound with a hydride reagent in the presence of an optically active metal compound. The resulting optically active alcohols are useful as intermediates for the synthesis of physiologically active compounds such as drugs and pesticides, functional materials such as liquid crystals, and raw materials for synthesis in fine chemistry. A novel optically active cobalt (II) complex useful as a catalyst is also provided.Type: GrantFiled: September 27, 1996Date of Patent: May 26, 1998Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Teruaki Mukaiyama, Kiyotaka Yorozu, Takushi Nagata, Toru Yamada, Kiyoaki Sugi
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Patent number: 5733341Abstract: A process is described for inhibiting the re-absorption of migrating dyes in the wash liquor, comprising introducing into a wash liquor containing a peroxide-containing detergent, from 0.5 to 150, preferably from 1.5 to 75, especially from 7.5 to 40 mg, per liter of wash liquor, of one or more compounds having the formula (1), (2), (3), (4), (5), (6), (7), (8), (9), (10), (11), (12), (13) or (14) as defined in the specification. The compounds of formula (1), (2), (3), (4), (5), (6), (8), (9) (10), (11), (12), (13) or (14) are new compounds. The compounds used do not exhaust at all on to cotton, polyamide or polyester fibers, so that the compounds cannot lead to fiber discoloration problems.Type: GrantFiled: December 14, 1995Date of Patent: March 31, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Claude Eckhardt, Dieter Reinehr, Georges Metzger
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Patent number: 5665329Abstract: Novel compounds containing a heteroatom-bearing bridge and novel complexes of these compounds with metals. The novel compounds and complexes are useful in diagnostic and therapeutic methods.Type: GrantFiled: June 6, 1995Date of Patent: September 9, 1997Assignee: Bracco International B.V.Inventors: Kondareddiar Ramalingam, Natarajan Raju
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Patent number: 5663393Abstract: Chiral catalysts for enantioselectively epoxidizing a prochiral olefin and for enantioselectively oxidizing a prochiral sulfide are disclosed, together with methods of using such catalysts. In accordance with one aspect of the invention, the catalyst is a salen derivative which has the following general structure: ##STR1## In accordance with another aspect of the present invention is a method of, producing an epoxychroman using a chiral catalyst. In accordance with this method, a chromene derivative, an oxygen atom source, and a chiral catalyst are reacted under such conditions and for such time as is needed to epoxidize said chromene derivative. In accordance with yet another aspect of this invention is a method of enantioselectively epoxidizing a cis-cinnamate derivative to make taxol or an analog thereof. In accordance with another aspect a method of disproportionation of hydrogen peroxide using the catalysts of the present invention is disclosed.Type: GrantFiled: June 6, 1995Date of Patent: September 2, 1997Assignee: Research Corporation Technologies, Inc.Inventors: Eric N. Jacobsen, Wei Zhang, Li Deng
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Patent number: 5637660Abstract: Disclosed is a novel bidentate pyridine transition metal catalyst having the general formula ##STR1## where Y is O, S, NR, ##STR2## each R is independently selected from hydrogen or C.sub.1 to C.sub.6 alkyl, each R' is independently selected from C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, C.sub.6 to C.sub.16 aryl, halogen, or CF.sub.3, M is titanium, zirconium, or hafnium, each X is independently selected from halogen, C.sub.1 to C.sub.6 alkyl, C.sub.1 to C.sub.6 alkoxy, or ##STR3## L is X, cyclopentadienyl, C.sub.1 to C.sub.6 alkyl substituted cyclopentadienyl, indenyl, fluorenyl, or ##STR4## and "n" is 1 to 4. Also disclosed is a method of making a poly-.alpha.-olefin comprising polymerizing an .alpha.-olefin monomer using that catalyst or a catalyst that has the general formula ##STR5## where Y, M, L, X, and R' were previously defined.Type: GrantFiled: April 17, 1995Date of Patent: June 10, 1997Assignee: Lyondell Petrochemical CompanyInventors: Sandor Nagy, Ramesh Krishnamurti, John A. Tyrell, Leonard V. Cribbs, Mary Cocoman
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Patent number: 5618957Abstract: A method of producing salcomine by reacting ethylene diamine with salicylaldehyde and a cobalt salt in a liquid reaction medium containing solvent.Type: GrantFiled: September 28, 1995Date of Patent: April 8, 1997Assignee: Degussa AGInventors: Frank Hubner, Ulrich Gora, Klaus Huthmacher, Karlheinz Drauz
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Patent number: 5616750Abstract: A compound of formula (I): ##STR1## n which M is a transition metal ion; A is a counter-ion if required;r, s and t are independently 0 to 3 such that r+s+t is in the range of 1 to 3;R.sup.a, R.sup.b, R.sup.c are each independently hydrogen or CH.sub.2 OR' where R' is hydrogen or an organic group;B and E are independently oxygen, CH.sub.2, NR.sup.d in which R.sup.d is alkyl, hydrogen, alkylcarbonyl, or arylcarbonyl or SO.sub.n where n is 0 or an integer 1 or 2, with the proviso that B and E are not simultaneously CH.sub.2 and that when B is oxygen, NR.sup.d or SO.sub.n, then r cannot be 0, and when E is oxygen, NR.sup.d or SO.sub.n, then t cannot be 0;R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 are independently hydrogen, alkyl or alkoxy.Type: GrantFiled: October 6, 1993Date of Patent: April 1, 1997Assignee: SmithKline Beecham plcInventors: David Bell, David Miller, Robin P. Attrill
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Patent number: 5561094Abstract: A process for making a dialkyl carbonate which comprises reacting urea with a first alcohol in a carbamate reactor at a temperature and pressure sufficient to convert said urea to an alkyl carbamate; and reacting the alkyl carbamate with a second alcohol in the presence of a dialkyl isocyanato alkoxy tin catalyst or derivatives in a carbonate reactor at a temperature and pressure sufficient to convert the alkyl carbamate to a dialkyl carbonate, wherein the molar ratio of alkyl carbamate to second alcohol is in the range between about 2:1 to about 10:1 and wherein dialkyl carbonate is present within the carbonate reactor in an amount between about 1 to about 3 weight %, based on total alkyl carbamate and second alcohol content, and wherein the second alcohol is either the same as or different from the first alcohol or a mixture of alcohols.Type: GrantFiled: April 26, 1995Date of Patent: October 1, 1996Inventors: Ramzi Y. Saleh, Robert C. Michaelson, Elena N. Suciu, Barbara Kuhlmann
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Patent number: 5514823Abstract: Preparation of N,N'-bis(alkylsalicylidene)ethylene or phenylene diamines, and transition metal complexes thereof, particularly copper, and their use as an additive to diesel fuel to reduce soot formation in diesel exhaust.Type: GrantFiled: February 7, 1994Date of Patent: May 7, 1996Assignee: Henkel CorporationInventors: Gary A. Kordosky, R. Brantley Sudderth
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Patent number: 5453526Abstract: A layered double hydroxide intercalated with a metal complex of a polyaryl compound is described. A preferred complex is porphin or phthylocyanine. The metals are preferably selected from Group VII-B and Group VIII cobalt and iron triads. The resulting LDH metal complexes are useful for the oxidation of oxidate compounds such as thiols and phenols.Type: GrantFiled: January 31, 1994Date of Patent: September 26, 1995Assignee: Board of Trustees operating Michigan State UniversityInventors: Thomas J. Pinnavaia, Elena M. Perez-Bernal, Ricardo Ruarno-Casero, Malama Chibwe
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Patent number: 5451649Abstract: Benzofluorenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition, polymers resulting from such polymerizations are disclosed.Type: GrantFiled: March 17, 1994Date of Patent: September 19, 1995Assignee: Phillips Petroleum CompanyInventors: Roland Zenk, Helmut G. Alt, M. Bruce Welch
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Patent number: 5286887Abstract: Polymers and copolymers are derived from substituted macrocyclic metal chelators. These polymers may be cross-linked, and are typically insoluble in most solvents. The metal complexes of these polymers exhibit the useful catalytic activity of the monomers. The polymers are advantageously prepared by reacting a polybasic nucleophile with the substituted macrocyclic metal chelator. Copolymers of the macrocyclic metal chelators with other polyfunctional monomers are also formed by reaction with suitable polybasic nucleophiles. Suitable macrocyclic metal chelators for use as monomers in accordance with the present invention have at least one leaving group substituent which is labile for aromatic nucleophilic substitution and at least one electronegative (or electron-withdrawing) substituent.Type: GrantFiled: September 24, 1991Date of Patent: February 15, 1994Assignee: Regents of the University of CaliforniaInventors: Teddy G. Traylor, Young S. Byun
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Patent number: 5281578Abstract: Gallium(III) complexes of general formula I, ##STR1## in which X=O.sub.2 CR.sup.2, halogen, NO.sub.3 or -OA, R.sup.1 =H, alkyl, alkoxy, halogen, NO.sub.2 or amino, R.sup.2 =alkyl, alkoxy or aryl, each of R.sup.3, R.sup.4, R.sup.5 and R.sup.6 =H or alkyl and n=0, 1 or 2, or when n=0 and R.sup.3 and R.sup.6 both=H, then R.sup.4 and R.sup.5 together may form tetramethylene, and A=an identical gallium complex moiety to that to which the oxygen atom is linked, are well absorbed orally, and are indicated as medicaments for hypercalcemia and for cancer chemotherapy.Type: GrantFiled: May 19, 1992Date of Patent: January 25, 1994Assignee: Johnson Matthey Public Limited CompanyInventors: Fontaine C. Bradley, Danielle T. Frost, Christen M. Giandomenico
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Sterically hindered, regenerable Schiff base complexes, solutions thereof and process using the same
Patent number: 5266283Abstract: There are disclosed saltmen-type metallo Schiff base complexes and oxygen-sorbing and -desorbing solutions of the same, pressure- and temperature-swing oxygen separation processes using the complexes and solutions, and methods of regenerating such complexes and solutions.Type: GrantFiled: May 11, 1990Date of Patent: November 30, 1993Assignee: Bend Research, Inc.Inventors: Dwayne T. Friesen, Warren K. Miller, Bruce M. Johnson, David J. Edlund -
Patent number: 5189192Abstract: Addition polymerization catalysts comprising a derivative of a Group 4-8 metal compound prepared by metal center oxidation.Type: GrantFiled: January 16, 1991Date of Patent: February 23, 1993Assignee: The Dow Chemical CompanyInventors: Robert E. LaPointe, Robert K. Rosen, Peter N. Nickias