Abstract: A complex suitable for the polymerization of l-olefins is disclosed, having the Formula A
wherein M is a transition metal, lanthanide or actinide; X represents an atom or group covalently or ionically bonded to the transition metal M; b is the valency of the atom or group X; Z1 is N or P; Z2 is N, P, N−, P−or NR5; Z3 is one of N, P, O, S, NHR3, NR3R4, OH, OR3, SH, SR3, PHR3, PR3R4, (NR3)−, O−, S−, (PR3)−, P(R3R4)O, NR3 or PR3 to the proviso that one of Z2 and Z3 is anionic; T is the oxidation state of the transition metal M when both Z2 or Z3 are neutral, and is one less than the oxidation state of M when one of Z2 or Z3 is anionic; A and B are independently hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl, and may together with Z2 form part of a heterocyclic substituent; B may be joined to Z3 by either a single or a double bond; R1 to R5 are each independently selected from hydrogen, halogen, hydrocarbyl, substitute
Type:
Grant
Filed:
November 1, 2000
Date of Patent:
January 27, 2004
Assignee:
BP Chemicals Limited
Inventors:
Vernon Charles Gibson, Brian Stephen Kimberley, Gregory Adam Solan
Abstract: Methods and compositions for the generation of polypeptides having varied material properties are disclosed herein. Methods include means for making block copolypeptides and related protocols for adding aminoacid-N-carboxyanhydrides (NCAs) to polyaminoacid chains by exposing the NCA to solutions containing polyaminoacid chains having an amido amidate metallacyle end groups and reacting the NCA with the amido containing metallacyle end group so that the NCA is added to the polyaminoacid chain. Addition methods include means of controlling the addition of aminoacid-N-carboxyanhydrides to polyaminoacid chains by reacting NCAs with initiator molecules and allowing initiator complexes to open the ring of the NCAs through oxidative addition across either the O—C5 or O—C2 anhydride bond resulting a controlled polypeptide polymerization. Novel compositions for use in peptide synthesis and design including five and six membered amido-containing metallacycles and block copolypeptides are also disclosed.
Type:
Grant
Filed:
March 19, 1999
Date of Patent:
January 20, 2004
Assignee:
The Regents of the University of California
Abstract: An improved catalyst based on cobalt and/or rhodium dissolved in a non-aqueous ionic solvent which is liquid at a temperature of less than 90° C. More particularly, the catalyst comprises at least one complex of cobalt and/or rhodium co-ordinated with at least one nitrogen-containing ligand and the non-aqueous ionic solvent comprises at least one quaternary ammonium and/or phosphonium cation and at least one inorganic anion.
Type:
Grant
Filed:
July 12, 2002
Date of Patent:
January 13, 2004
Assignee:
Institut Francais du Petrole
Inventors:
Gerhard Hillebrand, Andre Hirschauer, Dominique Commereuc, Helene Olivier-Bourbigou, Lucien Saussine
Abstract: In accordance with the present invention, there are provided novel coupling agents which are compatible with a wide variety of adhesive formulations and which provide substantial adhesion enhancement relative to base formulations to which they are added. Invention compounds comprise at least one free-radically polymerizable group (other than acrylate) and at least one reactive moiety which forms covalent bond(s) with substrates having free hydroxyl groups on the surface thereof. Thus, invention compounds are covalently linked to adhesive formulations upon free radical cure, while at the same time providing “residual” functionality which is capable of undergoing reaction with any substrate having reactive (e.g., hydroxyl) groups in the surface thereof.
Type:
Application
Filed:
July 3, 2002
Publication date:
January 8, 2004
Applicant:
Henkel Loctite Corporation
Inventors:
Puwei Liu, Stephen M. Dershem, Benjamin Neff, Maria Villegas
Abstract: This invention is a process for synthesizing aliphatic 1,3-diols in one step by hydroformylation and hydrogenation of oxirane, carbon monoxide, and hydrogen employing a catalyst comprising a cobalt carbonyl compound and a cocatalyst metal compound ligated with a ligand in a ligand to cocatalyst metal atom molar ratio in the range of 0.2:1.0 to 0.6:1.0, optionally in the presence of a promoter, where recovery of product is preferably accomplished via water extraction of a diol rich phase from the bulk reaction mixture. The process modifications can, particularly in combination, be beneficial with respect to product recovery, catalyst recycle, and overall economics of a one-step process for producing aliphatic 1,3-diols.
Type:
Grant
Filed:
February 7, 2003
Date of Patent:
December 9, 2003
Assignee:
Shell Oil Company
Inventors:
Joseph Broun Powell, Paul Richard Weider, John Frederick Knifton, Kevin Dale Allen, Lynn Henry Slaugh, Juan Pedro Arhancet
Abstract: Methods and compositions for the generation of polypeptides having varied material properties are disclosed herein. Methods include means for making self assembling amphiphilic block copolypeptides and related protocols adding oligo(ethyleneglycol) functionalized aninoacid-N-carboxyanhydrides (NCAs) to polyaminoacid chains. Additional methods include means of adding an end group to the carboxy terminus of a polyaminoacid chain by reacting an alloc-protected amino acid amide with a transition metal-donor ligand complex, thereby forming an amido-amidate metallacycle for use in further polymerization reactions. Novel compositions for use in peptide synthesis and design including five and six membered amido-containing metallacycles and block copolypeptides are also disclosed.
Type:
Grant
Filed:
May 10, 2000
Date of Patent:
October 14, 2003
Assignee:
The Regents of the University of California
Inventors:
Timothy J. Deming, Miaoer Yu, Scott A. Curtin, Jungyeon Hwang, Michael D. Wyrsta
Abstract: The present invention relates to ferroxanes and a method of making wherein a ferroxane may be defined by the general formula [Fe(O)x(OH)y(O2CR)z]n wherein x, y and z may be any integer or fraction such that 2x+y+z=3 and n may be any integer. The ferroxanes may be doped with at least one other element other than iron. The present invention further relates to a ceramic made from the ferroxanes of the present invention and a method of making. The present invention still further relates to supported and unsupported membranes made from the ceramic of the present invention.
Type:
Application
Filed:
January 24, 2003
Publication date:
September 25, 2003
Inventors:
Jerome Rose, Mark Wiesner, Andrew Barron
Abstract: Selected olefins such as ethylene and &agr;-olefins are polymerized by nickel [II] complexes of certain monoanionic ligands. The polyolefins are useful in many applications such as molding resins, film, fibers and others. Also described are many novel nickel compounds and their precursors, as well a novel ligands.
Type:
Grant
Filed:
October 13, 1999
Date of Patent:
September 2, 2003
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Lynda Kaye Johnson, Alison Margaret Anne Bennett, Lin Wang, Anju Parthasarathy, Elisabeth Hauptman, Robert D. Simpson, Jerald Feldman, Edward Bryan Coughlin, Steven Dale Ittel
Abstract: The invention relates to novel transition metal complexes containing at least one diaminocarbene ligand, to processes for preparing these transition metal complexes and to their use as catalysts in organic reactions.
Abstract: A Bis (cyclopentadienyl) metal complex of a derivative thereof is used as a label in an assay utilizing electrichemiluminescence or fluorescence detection means. The Bis (cyclopentadienyl) metal complex may comprise ferrocene or a derivative thereof which gives rise to a ferricinium ion on electrochemical oxidation.
Abstract: Methods for making Group VIII metal bis(imine) complexes are disclosed. Each method uses a single reactor that is equipped with an internal filter to facilitate preparation and purification of the complex under an inert atmosphere. The complexes, which are useful in catalyst systems for olefin polymerization, are prepared in either one or two reaction steps. Surprisingly, the single-reactor approach to preparation and purification enables the efficient preparation of exceptionally high (>90%) yields of desirable Group VIII metal bis(imine) complexes.
Abstract: An improved catalyst based on cobalt and/or rhodium dissolved in a non-aqueous ionic solvent which is liquid at a temperature of less than 90° C. More particularly, the catalyst comprises at least one complex of cobalt and/or rhodium coordinated with at least one nitrogen-containing ligand and the non-aqueous ionic solvent comprises at least one quaternary ammonium and/or phosphonium cation and at least one inorganic anion.
Type:
Application
Filed:
July 12, 2002
Publication date:
March 20, 2003
Applicant:
Institut Francais du Petrole
Inventors:
Gerhard Hillebrand, Andre Hirschauer, Dominique Commereuc, Helene Olivier-Bourbigou, Lucien Saussine
Abstract: Alpha-olefins are manufactured in high yield and with very high selectivity by contacting ethylene with an iron complex of a selected 2,6-pyridinedicarboxaldehyde bisimine or a selected 2,6-diacylpyridine bisimine, and in some cases a selected activator compound such as an alkyl aluminum compound. Novel bisimines and their iron complexes are also disclosed. The &agr;-olefins are useful as monomers and chemical intermediates.
Abstract: The invention provides a metal complex comprising a ligand and a metal. The ligand is an aminophosphine compound represented by the following formula (1)
[Each Ar represents an aryl group optionally substituted with a halogen atom, a lower alkyl group having 1 to 4 carbon atom or an alkoxy group, both Ar's being same or different with each other. R1 and R2 represent hydrogen atom, a cycloalkyl group having 5 to 7 carbon atoms, or an alkyl group having 1 to 6 carbon atom optionally substituted with a halogen atom, a lower alkoxy group or phenyl group, with R1 and R2 being same or different with each other.
Abstract: 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 donor
Type:
Grant
Filed:
August 13, 1999
Date of Patent:
January 28, 2003
Assignees:
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
Abstract: Compounds able to chelate bi- and trivalent paramagnetic metal ions, their chelated complexes with said metal ions and the physiologically compatible salts thereof, as well as the use thereof as contrast agents in the technique known as “Magnetic Resonance Imaging” (M.R.I.).
Type:
Application
Filed:
September 24, 2001
Publication date:
January 16, 2003
Inventors:
Maurizio Franzini, Andrea Beltrami, Luisella Calabi, Alessandro Maiocchi, Mario Virtuani, Pier Lucio Anelli, Kondareddiar Ramalingam, Ramachandran S. Ranganathan
Abstract: Alpha-olefins are manufactured in high yield and with very high selectivity by contacting ethylene with an iron complex of a selected 2,6-pyridinedicarboxaldehyde bisimine or a selected 2,6-diacylpyridine bisimine, and in some cases a selected activator compound such as an alkyl aluminum compound. Novel bisimines and their iron complexes are also disclosed. The &agr;-olefins are useful as monomers and chemical intermediates.
Type:
Grant
Filed:
July 7, 2000
Date of Patent:
December 3, 2002
Assignees:
E. I. du Pont de Nemours and Company, University of North Carolina
Inventors:
Maurice S. Brookhart, III, Brooke L. Small
Abstract: Wurster's crown ligands comprise a macrocyclic ligand such as a crown ether in which a hetero atom is substituted with a 1,4-phenylenediamine group. The phenylenediamine group is covalently bound to the macrocyclic ligand by one or both of the amine nitrogens, the amine nitrogen thereby substituting for the hetero atom of the macrocyclic ligand. The resulting compounds are redox active. Methods of making and using the compounds are also disclosed.
Abstract: 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.
Abstract: Various olefins may be polymerized using a catalyst systems containing selected &agr;-diimine, urethane or urea ligands, some of them novel, complexed to nickel, palladium or other selected transition metals. The polymers are useful as molding resins and elastomers.
Type:
Grant
Filed:
July 28, 1999
Date of Patent:
June 11, 2002
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Lynda Kaye Johnson, Lissa Taka Jennings Nelson
Abstract: It is disclosed a new catalyst system for the polymerization of olefins comprising the product obtainable by contacting the following components: (A) one or more compounds of a late transition metal belonging to Group 8-11 of the Periodic Table; and (B) the reaction product of water with one or more organometallic aluminum compounds of formula (IV): Al(CH2—CR3R4R5)xR6yHz, wherein R3 is a C1-C20 alkyl, C3-C20 cycloalkyl or C7-C20 alkylaryl radical; R4 is different from a straight alkyl and is a C3-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl or C7-C20 arylalkyl radical; or R3 and R4 form together a C4-C6 ring; R5 is hydrogen or a C1-C20 alkyl, C6-C20 aryl, C7-C20 alkylaryl or arylalkyl radical; R6 is a C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C7-C20 alkylaryl or C7-C20 arylalkyl radical; x is 1-3; z is 0-1; and y is 3−x−z; the molar ratio between said organometallic aluminum compound and water being comprised between 0.5:1 and 100:1.
Type:
Grant
Filed:
June 13, 2001
Date of Patent:
May 28, 2002
Assignee:
Basell Technology Company BV
Inventors:
Jan F. van Baar, Peter A. Schut, Andrew D. Horton, Tiziano Dall'Occo
Abstract: Methods for preparing olefin polymers, and catalysts for preparing olefin polymers are disclosed. The polymers can be prepared by contacting the corresponding monomers with a Group 8-10 transition metal catalyst and a solid support. The polymers are suitable for processing in conventional extrusion processes, and can be formed into high barrier sheets or films, or low molecular weight resins for use in synthetic waxes in wax coatings or as emulsions.
Type:
Application
Filed:
October 30, 2001
Publication date:
May 16, 2002
Inventors:
Peter Borden Mackenzie, Leslie Shane Moody, Christopher Moore Killian, Gino Georges Lavoie
Abstract: Olefin co- or homopolymers having a good molecular weight and short chain branching may be prepared in the presence of a pyridyl bridged bisphosphinimine complex of a Group 8, 9 or 10 metal.
Abstract: A catalytic transfer hydrogenation process is provided. The catalyst employed in the process is a metal cyclopentadienyl complex which is coordinated to defined bidentate ligands. Preferred metals include rhodium, ruthenium and iridium. Preferred bidentate ligands are diamines and aminoalcohols, particularly those comprising chiral centers. The hydrogen donor is advantageously a secondary alcohol or a mixture of triethylamine and formic acid. The process can be employed to transfer hydrogenate ketones and imines, which are preferably prochiral. Catalysts for use in such a process are also provided.
Abstract: Ethylene is polymerized by novel nickel or iron complexes of selected novel 2,2-bipyridine-6-imines, optionally with the addition of other cocatalysts. The polymers are useful for films and molding resins.
Abstract: This invention is directed to novel Group 8-10 transition metal catalysts and to batch or continuous polymerizations using these catalysts. The catalysts of the present invention readily convert ethylene and &agr;-olefins to high molecular weight polymers, and allow for olefin polymerizations under various conditions, including ambient temperature and pressure, and in solution. Preferred catalysts are group 8-10 transition metals having certain dipyridyl ligands bonded thereto.
Type:
Grant
Filed:
May 23, 2000
Date of Patent:
April 2, 2002
Assignee:
Eastman Chemical Company
Inventors:
James Allen Ponasik, Jr., Peter Borden Mackenzie, Christopher Moore Killian
Abstract: Phosphonite ligands, catalyst compositions containing such ligands and a hydroformylation process using such catalyst compositions involving a bidentate phosphonite ligand having the structure represented by the following
wherein the Ar groups are either the same or different unbridged organic aromatic groups such as substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, mixtures thereof or the like are disclosed. The ligands in combination with a Group VIII metal or Group VIII metal compound are particularly useful in a hydroformylation process for reacting an ethylenically unsaturated compound to produce linear alkenals at high selectivity.
Type:
Grant
Filed:
November 17, 2000
Date of Patent:
March 26, 2002
Assignee:
E. I. du Pont de Nemours and Company
Inventors:
Emilio Enrique Bunel, Kathryn E. Schwiebert
Abstract: The present invention relates to a bidenitate diimino-complex of nickel or palladium containing at least one group OSi(R)3 wherein each R, equal to or different from each other, is selected from the group consisting of: C1-C20 alkyl, C3-C20 cycloalkyl, C6-C20 aryl, C2-C20 alkenyl, C7-C20 arylalkyl, C7-C20 alkylaryl, C8-C20 arylalkenyl, and C8-C20 alkenylaryl, linear or branched, preferably each R is independently methyl, ethyl or propyl.
Type:
Application
Filed:
March 12, 2001
Publication date:
January 24, 2002
Applicant:
REPSOL QUIMICA S.A.
Inventors:
Luis Mendez Llatas, Antonio Munoz-Escalona Lafuente, Juan Campora Perez, Ernesto Carmona Guzman, Manuel Lopez Reyes
Abstract: The invention provides a metal complex comprising a ligand and a metal. The ligand is an aminophosphine compound represented by the following formula (1)
The metal is rhodium, ruthenium, iridium or nickel.
Abstract: The invention relates to novel targeting drug agents that are targeted for entry into the mitochondria. More specifically, the agents are cisplatin derivatives called mitoplatins which are useful as anti-tumor agents. Mitoplatins are named for their targeting to the mitochondrial DNA via the carnitine-acylcarnitine translocase system. The invention also relates to methods of synthesizing mitoplatins, compositions of matter containing mitoplatins and methods of using the mitoplatins.
Abstract: 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.
Abstract: Methods for preparing olefin polymers, and catalysts for preparing olefin polymers are disclosed. The polymers can be prepared by contacting the corresponding monomers with a Group 8-10 transition metal catalyst. The polymers are suitable for processing in conventional extrusion processes, and can be formed into high barrier sheets or films, or low molecular weight resins for use in synthetic waxes in wax coatings or as emulsions.
Type:
Grant
Filed:
May 12, 2000
Date of Patent:
October 16, 2001
Assignee:
Eastman Chemical Company
Inventors:
Peter Borden Mackenzie, Leslie Shane Moody, Christopher Moore Killian, James Allen Ponasik, Jr., Jason Patrick McDevitt, Gino Georges Lavoie
Abstract: Olefin Co- or homopolymers having a good molecular weight and short chain branching may be prepared in the presence of Group 8, 9 or 10 phosphinimine complex other than nickel.
Type:
Grant
Filed:
December 17, 1999
Date of Patent:
October 9, 2001
Assignee:
Nova Chemical (International) S.A.
Inventors:
Xiaoliang Gao, Qinyan Wang, Matthew Gerald Kowalchuk
Abstract: 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.
Abstract: A metal complex represented by the formula:
(X)nML1L2, (X)2M(L1)2 or (L1)2ML2
wherein M represents a Group VIII metal, X represents a polar group, L1 represents a phenanthroline containing at least one carboxyl group which may be neutralized, L2 represents a nitrogen-containing polycyclic compound which may contain one or more substituents, and n is an integer of 1 or 2. A dye-sensitized oxide semiconductor electrode includes an electrically conductive body, an oxide semiconductor film provided on a surface of the electrically conductive body, and the above metal complex. A solar cell may be constructed from the above dye-sensitized oxide semiconductor electrode, a counter electrode, and a redox electrolyte contacting with both electrodes.
Type:
Grant
Filed:
March 18, 1999
Date of Patent:
August 21, 2001
Assignee:
Director-General of Agency of Industrial Science and
Technology
Inventors:
Hideki Sugihara, Hironori Arakawa, Kazuhiro Sayama, Lok Pratap Singh, Mohammad Khaja Nazeeruddin, Michael Graetzel
Abstract: The present invention relates to cobalt(II) oxide containing metallic cobalt, to a process for the production thereof and to the use thereof.
Type:
Grant
Filed:
December 17, 1999
Date of Patent:
August 21, 2001
Assignee:
H. C. Starck GmbH & Co. KG
Inventors:
Astrid Görge, Juliane Meese-Marktscheffel, Dirk Naumann, Armin Olbrich, Frank Schrumpf
Abstract: 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:
Application
Filed:
March 2, 2001
Publication date:
August 16, 2001
Inventors:
Peter Borden Mackenzie, Christopher Moore Killian, Leslie Shane Moody, Jason Patrick McDevitt
Abstract: Process for preparing hydrogen peroxide, comprising the following steps:
a) a step of reduction of dioxygen in acidic medium with a hydrophobic organometallic complex, and
b) a step of separation of the oxidized organometallic complex resulting from step a) and of the hydrogen peroxide by liquid/liquid extraction.
Type:
Grant
Filed:
June 16, 1999
Date of Patent:
August 14, 2001
Assignee:
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation
des Procedes Georges Claude
Inventors:
Henry Ledon, Roger Guillard, Alain Tabard, Guy Royal, Gregory Broeker
Abstract: Wurster's crown ligands comprise a macrocyclic ligand such as a crown ether in which a hetero atom is substituted with a 1,4-phenylenediamine group. The phenylenediamine group is covalently bound to the macrocyclic ligand by one or both of the amine nitrogens, the amine nitrogen thereby substituting for the hetero atom of the macrocyclic ligand. The resulting compounds are redox active. Methods of making and using the compounds are also disclosed.
Abstract: The invention relates to diethylenetriaminepentaacetic acid derivatives, their complexes and complex salts, containing an element of atomic numbers 20-32, 39-51 or 57-83, pharmaceutical agents containing these compounds, their use as contrast media and antidotes and process for their production.
Type:
Grant
Filed:
January 10, 2000
Date of Patent:
July 3, 2001
Assignee:
Schering Aktiengesellschaft
Inventors:
Werner Krause, Franz-Karl Maier, Michael Bauer, Gabriele Schuhmann-Giampieri, Wolf-Rudiger Press, Peter Muschik
Abstract: A photosensitizer complex of formulae (Ia) MX3Lt or (Ib) MXYLt in which M is a transition metal selected from ruthenium, osmium, iron, rhenium and technetium, preferably ruthenium or osmium; each X is a co-ligand independently selected from NCS—, Cl—, Br—, I—, CN—, NCO—, H2O, NCN2−; pyridine unsubstituted or substituted by at least one group selected from vinyl, primary, secondary or tertiary amine, OH and C1-30 alkyl, preferably NCS—; and Lt is a tridentate ligand comprising heterocycles such as pyridine, thiophene, imidazole, pyrazole, triazole, carrying at least one carboxylic, phosphoric, hydoxamic acid or a chelating group. A photovoltaic cell comprising an electrically conductive layer deposited on a support to which at least one titanium dioxide layer has been applied and, as a photosensitizer applied to the titanium dioxide layer, a photosensitizer complex of formula (Ia) or Ib) as specified above.
Type:
Grant
Filed:
November 2, 1999
Date of Patent:
June 12, 2001
Assignee:
Ecole Polytechnique Federale de Lausanne
Inventors:
Michael Grätzel, Mohammad Khaja Nazeeruddin, Péter Péchy
Abstract: A method for producing aromatic amines such as N-phenyl-p-phenylenediamine is disclosed wherein an amine substituted aromatic such as aniline is oxidized with oxygen or hydrogen peroxide in the presence of a preferred alkali metal pentacyano ferrate(II) complex made using water soluble ferrous salts with a non-oxidizing anion, preferably, ferrous sulfate, and containing various water soluble ligands, such as ammonia, mono alkyl amine, dialkyl amines, and trialkyl amines. The complex is subsequently catalytically reduced by hydrogenation using certain heterogeneous metal catalysts to yield the desired aromatic amine.
Abstract: A compound of formula (I): ##STR1## wherein, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are selected independently from hydrogen, alkyl, and alkyl substituted with one or more --O-- atoms, or where R.sup.1, R.sup.2 and R.sup.3, R.sup.4 are ring residues. The compound is capable of functioning as a ligand and complexing with paramagnetic Fe(III) ion for use as a second-sphere contrast enhancing agent for magnetic resonance imaging of tissue, and a method of administering the second sphere contrast agent.
Type:
Grant
Filed:
January 11, 1999
Date of Patent:
November 14, 2000
Assignees:
The University of Toledo, Schering Aktiengesellschaft
Inventors:
Julian A. Davies, Wolfgang Ebert, Bernd Raduechel
Abstract: A carbonate- and/or bicarbonate-iron-whey-proteolysate complex includes 1 to 1,000 atoms of iron and one or more molecules of carbonate and/or bicarbonate per one molecule of whey-protein as measured before whey proteolysis, and exhibits no specific iron taste. The carbonate- and/or bicarbonate-iron-whey proteolysate complex is used in drugs, foods, drinks, and animal feed for the purposes of an iron supplement for treatment and prevention of anemia.
Abstract: A gas generant for an air, which is improved in the defects of gas generants using sodium azide in a practical use and has stable combustion capability. And a molecular compound comprising (a) a gas generant component, (b) an oxidant component and (c) a reaction accelerator component, preferably represented by the composition formula (I).M.mX.nY (I)[wherein, M is Al Mg, Ca, Cr, Cu, Zn, Mn, Fe, Co, Sr, Ni and another metal components; X is a nitrogen-containing compound having 0 or 1 carbon atom; Y is an anion such as NO.sub.3 and ClO; m is a number of 1 to 3; and n is a number 2 to 3].
Abstract: Olefin co- or homopolymers having a good molecular weight and short chain branching may be prepared in the presence of a pyridyl bridged bisphosphinimine complex of a Group 8, 9 or 10 metal.
Abstract: A process for the preparation of substituted amido phthalocyanines having the general formula I:MPc--(CONR.sup.1 R.sup.2).sub.n Ivia the reaction of a phthalocyanine carboxamide having the formula MPc(CONH.sub.2).sub.x wherein Pc is a Phthalocyanine ring; M is a hydrogen or a metal capable of forming a metal phthalocyanine such as Mg, Al, Ni, Fe, Zn, Pb, Sn or Cu and x is a number from 0.1 to 4.0, with an amine acid salt denoted by formula II: ##STR1## wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen; an alkyl group having 1-20 carbons; a cyclic alkyl group; an aryl group; an arylalkyl having 1-20 carbons; an alcohol group having 2-20 carbons; an alkyl amino alkyl group; an aliphatic amine having 1-20 carbons; an aliphatic amine acid salt having 1-20 carbons; polyoxyalkylene groups ranging in molecular weight 89-2000; polyoxyalkyleneamines ranging in molecular weight 148-4000; Z is the hydrogen sulphate or the hydrochloride salt of the amine.
Abstract: In a solution for forming electron-emitting regions of electron-emitting devices, the solution contains a metal carboxylate expressed by the following general formula (I), an organic solvent and/or , and water;
(R(COO)k)mM (I)
where k=numeral from 1 to 4 , m=a numeral from 1 to 4, and R=CnX2n+1−k R=CnX2n+2−k where X=a hydrogen or halogen (total number of hydrogen and halogen atoms is 2n+1) , n=an integer from 0 to 30, and M=a metal, wherein the organic solvent is a carboxylic ester having the same carboxylic group as R(COO)k expressed in the general formula (I). In a manufacture method of electron-emitting devices each provided between electrodes with a conductive film including an electron-emitting region, a process of forming the conductive film includes a step of coating and calcining the above solution. An image-forming apparatus is manufactured by using the electron-emitting devices.