Organic Sulfur Compound Patents (Class 502/168)
-
Patent number: 6852664Abstract: The present invention relates to novel double metal cyanide (DMC) catalysts for the preparation of polyether polyols by a polyaddition reaction between alkylene oxides and starter compounds having active hydrogen atoms, wherein the catalyst contains a) at least one double metal cyanide compound, b) at least one organic complexing ligand and c) at least one fluorine-containing complexing ligand.Type: GrantFiled: July 23, 2003Date of Patent: February 8, 2005Assignee: Bayer AktiengesellschaftInventors: Pieter Ooms, Jörg Hofmann, Martin Döbler
-
Patent number: 6841502Abstract: New ligands and compositions with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.Type: GrantFiled: April 23, 2003Date of Patent: January 11, 2005Assignee: Symyx Technologies, Inc.Inventors: Thomas R. Boussie, Oliver Brümmer, Gary M. Diamond, Christopher Goh, Anne M. LaPointe, Margarete K. Leclerc, James A. W. Shoemaker
-
Patent number: 6809053Abstract: A sulfonated resin catalyst whose activity has lowered as a result of use in the polymerization of silicone oil is reactivated by washing the catalyst with a low molecular weight siloxane medium, volatilizing off the siloxane medium under atmospheric or reduced pressure, and removing water from the catalyst.Type: GrantFiled: May 30, 2003Date of Patent: October 26, 2004Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroshi Nakayama, Masao Maruyama, Hiromi Nakabayashi, Susumu Ueno
-
Patent number: 6806223Abstract: The present invention relates to novel singlet oxygen catalysts useful for the production of specialty chemicals. The catalysts include a core material selected from amine coated polymeric beads, amine coated glass beads and multi-generational dendrimers to which condensed carbon molecules are bonded. These catalysts may in turn give rise to other solid phase heterogeneous catalysts useful for stereoselective or regioselective reactions, by way of non-limiting example.Type: GrantFiled: April 19, 2002Date of Patent: October 19, 2004Assignee: Central Michigan University Board of TrusteesInventor: Anton W. Jensen
-
Patent number: 6800583Abstract: Catalyst suspensions for the ring-opening polymerization of alkylene oxides comprise a) at least one multimetal cyanide compound having a crystalline structure and a content of platelet-shaped particles of at least 30% by weight, based on the multimetal cyanide compound, and b) at least one organic complexing agent c) water and/or d) at least one polyether and/or e) at least one surface-active substance, with the proviso that at least component a) and at least two of the components b) to e) have to be present.Type: GrantFiled: June 2, 1999Date of Patent: October 5, 2004Assignee: BASF AktiengesellschaftInventors: Georg Heinrich Grosch, Kathrin Harre, Jörg Erbes, Reinhard Lorenz, Stephan Bauer, Thomas Ostrowski, Eva Baum, Dieter Junge, Edward Michael Dexheimer
-
Patent number: 6797664Abstract: A catalyst system and a method for preparing polymers using the catalyst system is provided. The catalyst system includes a complex represented by the formula: [MLy(HSR)ñ]n, wherein M is a transition metal cation preferably in a lower oxidation state, L is a ligand, Y is a whole number between 0 and 5, ñ is a whole number between 1 and 6, n is the charge of the complex (preferably between −4 to 3), H is Hydrogen, S is sulphur and R is an organic group or hydrogen. The catalyst system advantageously has high hydrolytic stability which allows it to be used in a variety of polymerization systems including mass, solution, suspension and emulsion. In many cases only a small amount of the catalyst is required to promote polymerization.Type: GrantFiled: October 16, 2001Date of Patent: September 28, 2004Assignee: Rio Oeste, S.A.Inventor: Nicholas Moffat Irving-Antillón
-
Publication number: 20040186007Abstract: The present invention relates to compounds of transition metals with azo ligands, a process for their production, the use of these compounds as catalysts, a process for olefin (co)polymerization using these compounds, reaction products of these compounds with co-catalysts, the olefin (co)polymer, the use of these olefin (co)polymers for the production of molded parts, as well as molded parts that are produced from the olefin (co)polymers.Type: ApplicationFiled: January 30, 2004Publication date: September 23, 2004Inventor: Thomas Weiss
-
Patent number: 6794329Abstract: A two component catalyst activator comprises: 1) a Lewis acidic organoboron (or an orgonoaluminum) component; and 2) a component defined by the formula AOSO2R wherein A is a pseudo cationic group and R is a hydrocarbyl or substituted hydrocarbyl. The catalyst activator is used in combination with a transition metal catalyst for the polymerization of olefins. The catalyst activator provides improved catalyst activities. It is especially useful in solution polymerizations because of desirable solubility characteristics in comparison to the borate salts used in prior activators.Type: GrantFiled: November 21, 2002Date of Patent: September 21, 2004Assignee: Nova Chemicals (International) S. A.Inventor: Wei Xu
-
Publication number: 20040181018Abstract: The present invention relates to a process for the production of a catalyst by reacting metal compounds with azo ligands, the catalyst, the use of this catalyst as a polymerization catalyst, a process for olefin (co)polymerization with the aid of these catalysts, reaction products of these catalysts with co-catalysts, the olefin (co)polymer, the use of this olefin (co)polymer for the production of molded parts and also molded parts produced from the olefin (co)catalyst.Type: ApplicationFiled: March 4, 2004Publication date: September 16, 2004Inventor: Thomas Weiss
-
Publication number: 20040176241Abstract: Catalyst systems that have a benzoindenoindolyl ligand are disclosed. The catalysts are useful for olefin polymerizations. They have high activity and are less susceptible to decreased activity with changes in activator level or changes in polymerization temperature. The resultant polymers have low polydispersity. A new method of preparing N-alkyldihydroindenoindoles is also disclosed. N-alkyldihydroindenoindoles are useful precursors for the benzoindenoindolyl ligand.Type: ApplicationFiled: March 4, 2003Publication date: September 9, 2004Inventors: Sandor Nagy, Barbara M. Tsuie, Alexandr M. Genaev, Vyacheslav G. Shubin
-
Publication number: 20040171479Abstract: A catalyst is disclosed for the polymerization and co-polymerization of olefins with functionalized monomers. The catalyst is formed from a combination of two neutral metal complexes, L(iPr2)M(CH2Ph)(PMe3)[L=N-(2,6-diisopropylphenyl)-2-(2,6-diisopropylphenylimino)propanamide] and M(COD)2(COD=cyclooctadiene). The catalyst displays a unique mode of action and performs at ambient conditions producing high molecular weight polyolefins and co-polymers with functional groups. The polymerized olefins include ethylene, &agr;-olefins and functionalized olefins.Type: ApplicationFiled: February 28, 2003Publication date: September 2, 2004Inventors: Guillermo C. Bazan, Prasenjit Ghosh
-
Publication number: 20040157107Abstract: A catalyst paste composition for making electrodes has a uniform dispersion condition of a carbon black supporting a hydrogen reduction catalyst and is excellent in storage stability. The catalyst paste composition comprises a carbon black supporting a hydrogen reduction catalyst, an electrolyte, a water-soluble sulfonated polymer and a solvent.Type: ApplicationFiled: January 21, 2004Publication date: August 12, 2004Inventors: Makoto Higami, Keiichi Bessho
-
Patent number: 6770771Abstract: 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: GrantFiled: April 24, 2002Date of Patent: August 3, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Lynda Kaye Johnson, Lissa Taka Jennings Nelson
-
Publication number: 20040147706Abstract: A composition suitable for use as a catalyst for the reaction of an isocyanate compound or prepolymer thereof with an alcohol to form a polyurethane comprises a mixture of (a)an organometallic compound selected from: (i) a compound of formula M(RO)4, where M is titanium, zirconium, hafnium, aluminium, cobalt or iron or a mixture of these metals and OR is the residue of an alcohol ROH in which R comprises an (optionally substituted) C1-30 cyclic, branched or linear, alkyl, alkenyl, aryl or alkyl-aryl group or a mixture thereof, or; (ii) a complex of titanium, zirconium and/or hafnium and an acetoacetate ester and (b) a coordinating compound selected from a ketone, aldhehyde, carboxylic acid, sulphonic acid, nitride or an imine. An isocyanate composition containing a catalyst of the claimed composition is also described.Type: ApplicationFiled: December 1, 2003Publication date: July 29, 2004Inventor: Bruno Frederic Stengel
-
Publication number: 20040147391Abstract: Copolymerization of Ni(II) phenol imine complexes containing olefinic substituents on aryl groups with styrene in the presence of a radical initiator results in polymerized late transition metal catalysts which can be used for olefin polymerization or oligomerization. These catalysts have high catalyst activity for olefin polymerization or oligomerization.Type: ApplicationFiled: October 24, 2003Publication date: July 29, 2004Inventors: Stanley Wai-Yan Chow, Guo-Xin Jin, Zerong Lin, Robert J. Wittenbrink, Dao Zhang
-
Publication number: 20040138055Abstract: Bridged catalyst component in which a bridge spans two cylcopentadienyl or aromatic groups. The Cp or aromatic groups are attached to the same or different heteroatoms of the bridge, which heteroatoms are also bonded to a metal. A catalyst system can be made by contacting the bridged component with a cocatalyst. Polymerization of olefins can be catalyzed by the system.Type: ApplicationFiled: October 23, 2003Publication date: July 15, 2004Applicant: Fina Technology, Inc.Inventors: Abbas Razavi, Margarito Lopez, Didier Baekelmans, Vladimir Marin
-
Publication number: 20040121903Abstract: An object of the present invention is to provide a photocatalytic powder containing titanium dioxide fine particles containing an anionically active substance, where the electrokinetic potential of the fine particle is from about −100 to 0 mV in an aqueous environment at pH 5. Another object of the present invention is to provide a photocatalytic slurry containing the powder, and a polymer composition, a coating agent, a photocatalytic functional molded article and a photocatalytic functional structure using the powder.Type: ApplicationFiled: December 2, 2003Publication date: June 24, 2004Applicant: SHOWA DENKO K.K.Inventors: Katsura Ito, Hiroyuki Hagihara
-
Publication number: 20040118035Abstract: This invention is directed to a catalyst and an associated process for polymerizing olefins or olefin-containing compounds, to corresponding olefin polymers, to derivatives of the olefin polymers, and to lubricant and fuel compositions that include the olefin polymers or their derivatives. The polymerization catalyst is a metal complex and optional cocatalyst where the metal complex is formed from a bidentate ligand having a nitrogen coordinating group and a second coordinating group selected from oxygen, sulfur, selenium and tellurium groups and a metal compound where the metal is a transition metal, boron, aluminum, germanium or tin. Highly branched and reactive ethylene polymers are formed from the catalyst and process of the present invention. The ethylene polymers and their derivatives are useful in various applications including as performance additives in lubricants and fuels.Type: ApplicationFiled: October 17, 2002Publication date: June 24, 2004Inventor: Saleem Al-Ahmad
-
Patent number: 6753288Abstract: Organolead compounds such as tetraethyllead are useful in catalyst compositions for the oxidative carbonylation of hydroxyaromatic compounds to diaryl carbonates. They are employed in combination with a Group 8, 9, or 10 metal such as palladium, or a compound thereof, and a bromide or chloride such as tetraethylammonium bromide.Type: GrantFiled: June 6, 2002Date of Patent: June 22, 2004Assignee: General Electric CompanyInventors: Kirill Vladimirovich Shalyaev, Bruce Fletcher Johnson
-
Patent number: 6730757Abstract: The inventions disclosed herein are catalyst systems comprising a complex having one of the formulas LMX1X2 and LML′ and an activating cocatalyst, and use of the catalyst system in polymerizing olefinic monomers. In either of the foregoing formulas, L is a chelating ligand containing sulfur donors; M is a transition metal selected from either copper, silver, gold, manganese, iron, cobalt, palladium or nickel; X1 and X2 are independently selected from either halides, hydride, triflate, acetate, borate, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, aryl, thiolate, carbon monoxide, cyanate or olefins; and L′ is a bidentate ligand selected from either dithiolene, dithiolate, diphosphine, bisimine, bispyridine, phenanthroline, oxolate, catecholate, thiolatoamide, thiolatoimine or thiolatophosphine.Type: GrantFiled: March 8, 2002Date of Patent: May 4, 2004Assignee: ExxonMobil Research and Engineering CompanyInventors: Kun Wang, Abhimanyu Onkar Patil, Stephen Zushma, Ernestine Williams Hill, Edward Ira Stiefel
-
Publication number: 20040077809Abstract: Improved Group 3-11 transition metal based catalysts and processes for the polymerization of olefins are described. Some of the ligands are characterized by a preferred substitution pattern which allows for higher productivities of highly branched olefins; substitution patterns which boost productivity or alter the polymer microstructure are also described.Type: ApplicationFiled: August 27, 2003Publication date: April 22, 2004Applicant: Eastman Chemical CompanyInventors: Peter Borden Mackenzie, Leslie Shane Moody, James Allen Ponasik, Amy Kathryn Farthing
-
Publication number: 20040077914Abstract: A catalyst composition and process for the conversion of linear and/or branched paraffin hydrocarbons based on the use of an ionic liquid catalyst in combination with a Brønsted Acid, which provides a catalytic composition with an increased activity compared with said ionic liquid. Under suitable reaction conditions this conversion is leading to paraffin hydrocarbon fraction with higher octane number.Type: ApplicationFiled: September 16, 2003Publication date: April 22, 2004Inventors: John Zavilla, Konrad Herbst, Jindrich Houzvicka, Sven Ivar Hommeltoft
-
Publication number: 20040072678Abstract: Allyl polyalkylcyclopentadienyl complex of a metal of group 4 of the periodic table, and its use in the preparation of a catalytic composition for the (co) polymerization of &agr;-olefins. said complex is advantageously stable in solution and rapidly forms catalytic compositions with a high activity without the necessity of effecting alkylating pretreatment.Type: ApplicationFiled: November 12, 2003Publication date: April 15, 2004Inventors: Anna Sommazzi, Giampietro Borsotti, Francesco Masi, Roberto Santi, Valentina Bricco
-
Patent number: 6710006Abstract: Non-symmetrical ligands of formula (I); bis-aryliminepyridine MXn complexes comprising a non-symmetrical ligand of formula (I), wherein M is a metal selected from Fe or Co, n is 2 or 3, and X is halide, optionally substituted hydrocarbyl, alkoxide, amide, or hydride; [bis-aryliminepyridine MYp.Ln+][NC−]q complexes, comprising a non-symmetrical ligand of formula (I), wherein Y is a ligand which may insert an olefin, M is Fe or Co, NC− is a non-coordinating anion and p+q is 2 or 3, matching the formal oxidation of the metal atom M, L is a neutral Lewis donor molecule and n=0, 1, or 2; and processes for the production of alpha-olefins from ethylene, using said complexes.Type: GrantFiled: February 1, 2001Date of Patent: March 23, 2004Assignee: Shell Oil CompanyInventors: Eric Johannes Maria De Boer, Henderikus Hyacinthus Deuling, Harry Van Der Heijden, Nicolaas Meijboom, Aart Bartus Van Oort, Arie Van Zon
-
Publication number: 20040053777Abstract: The present invention relates to a material containing ionic groups, that form an ionic pair with a free radical catalyst. In particular the invention relates to materials that are magnetic, the methods of forming such materials. The invention also disclose the formation of polymers from the ionic groups within the material. Various applications of the resulting materials are also disclosed.Type: ApplicationFiled: September 10, 2003Publication date: March 18, 2004Inventor: Graham Margetts
-
Patent number: 6706657Abstract: A catalytic composition comprising at least one nickel compound mixed or complexed with at least one tertiary phosphine or a phosphite carrying a functional group, at least partly dissolved in a non-aqueous medium with an ionic nature resulting from bringing at least one aluminum halide into contact with at least one quaternary ammonium halide and/or at least one quaternary phosphonium halide, is useful for dimerizing, co-dimerizing and oligomerizing olefins. Functional groups include, but are not limited to, an amine, a cyclic amine, a nitrogen-containing heterocycle, an ester, an acid, an alcohol, a quaternary ammonium, a quaternary phosphonium, a sulfonium, a sulfonate or a phosphonate group.Type: GrantFiled: February 5, 2001Date of Patent: March 16, 2004Assignee: Institut Francais du PetroleInventors: Dominique Commereuc, Dominique Le Pennec, Hélène Olivier-Bourbigou
-
Patent number: 6696382Abstract: Inks are formulated for forming anode and cathode catalyst layers and applied to anode and cathode sides of a membrane for a direct methanol fuel cell. The inks comprise a Pt catalyst for the cathode and a Pt—Ru catalyst for the anode, purified water in an amount 4 to 20 times that of the catalyst by weight, and a perfluorosulfonic acid ionomer in an amount effective to provide an ionomer content in the anode and cathode surfaces of 20% to 80% by volume. The inks are prepared in a two-step process while cooling and agitating the solutions. The final solution is placed in a cooler and continuously agitated while spraying the solution over the anode or cathode surface of the membrane as determined by the catalyst content.Type: GrantFiled: November 14, 2000Date of Patent: February 24, 2004Assignee: The Regents of the University of CaliforniaInventors: Piotr Zelenay, John Davey, Xiaoming Ren, Shimshon Gottesfeld, Sharon C. Thomas
-
Publication number: 20040033892Abstract: The ionic liquids according to the invention result from the reaction of a halogenated or oxyhalogenated Lewis acid based on titanium, niobium, tantalum, tin or antimony with an organic salt of formula X+A− in which A− is a halide anion and X+ a quaternary ammonium, quaternary phosphonium or ternary sulphonium cation.Type: ApplicationFiled: May 13, 2003Publication date: February 19, 2004Inventors: Philippe Bonnet, Eric Lacroix, Jean-Pierre Schirmann
-
Publication number: 20040029721Abstract: The present invention provides a catalytic activity accelerant. The accelerant is added to stock oil for increasing the catalyst activity, the depth of catalytic hydrogenation and the yield of catalytic hydrogenation product, degrading the reaction conditions of catalytic hydrogenation, and improving the quality of product. The catalytic activity accelerant is consisted of an alkyl succinimide derivative, an alkyl phenol and a surfactant. The amount of the alkyl succinimide derivative in the accelerant is 5-70 wt. %. The amount of the alkyl phenol in the accelerant is 2-70 wt. %. The amount of the surfactant in the accelerant is 2-70 wt.Type: ApplicationFiled: May 22, 2003Publication date: February 12, 2004Inventors: Jintang Wang, Jianning Guan, Houliang Dai, Lijin Zhou, Minghui Tang, Yuming Zhang, Pingkai Ouyang, Chengfeng Li, Chaorong Dai, Jingyi Wang
-
Publication number: 20040014598Abstract: A porous coordinatively unsaturated metal complex comprises metal complex units. Each metal complex unit includes a first metal and an organic ligand. The metal complex units are connected one another through a second metal (a connecting metal). The porous coordinatively unsaturated metal complex has voids formed by the connection. Voids have a size of 10 Å or more. The first metal is rendered to a coordinatively unsaturated state in the metal complex unit. With this arrangement, not only low-molecular weight compounds but also general compounds can be introduced as substrates. Further, the porous coordinatively unsaturated metal complex has high catalytic activity or high molecule retainability.Type: ApplicationFiled: May 14, 2003Publication date: January 22, 2004Inventors: Susumu Kitagawa, Hiroshi Yamamoto, Jun Tatsumi
-
Publication number: 20040010165Abstract: The present invention provides new coordinative catalysts for the polymerization of alkylene oxides.Type: ApplicationFiled: April 21, 2003Publication date: January 15, 2004Inventors: Gerhard Erker, Alexander Snell
-
Patent number: 6677269Abstract: Solid polymeric onium poly(hydrogen fluoride) complexes disclosed herein can be used for alkylating aliphatic or aromatic hydrocarbons with olefins. These solid polymeric complexes can be formed by a process of contacting a source of hydrogen fluoride with a homopolymer or copolymer containing in at least one repeat unit, a nitrogen, phosphorus, or sulfur atom, capable of forming an onium fluoride moiety upon reaction or complexation with the hydrogen fluoride source.Type: GrantFiled: May 17, 2001Date of Patent: January 13, 2004Inventor: George A Olah
-
Publication number: 20030232717Abstract: Metal-ligand complexes that are useful as precursors to catalysts for the polymerization of olefins are provided. Certain of the catalysts are particularly effective at polymerizing ethylene and styrene into copolymers having novel properties, including a low molecular weight and close comparison between vinyl and methyl end groups.Type: ApplicationFiled: April 12, 2002Publication date: December 18, 2003Applicant: Symyx Technologies, Inc.Inventors: Oliver Brummer, Gary M. Diamond, Christopher Goh, Anne M. LaPointe, Margarete K. Leclerc, James Longmire, James A. W. Shoemaker
-
Patent number: 6656869Abstract: A composition comprising a boron or aluminum containing neutral Lewis acid and a compound of formula I or Ia: wherein R1 and R2 are each independently hydrocarbyl, substituted hydrocarbyl, or silyl; Q is (i) C—R4, where R4 is hydrocarbyl, substituted hydrocarbyl, heteroatom connected hydrocarbyl, or heteroatom connected substituted hydrocarbyl, (ii) P(NH2)2, or (iii) S(NH)(NH2) or S(O)(OH); L is a monoolefin or a neutral Lewis base that can be displaced by a monoolefin; T is hydrogen, hydrocarbyl or substituted hydrocarbyl, or with L forms a &pgr;-allyl group; and M is Ni(II), Pd(II), Co(II) or Fe(II). The composition is useful as an olefin polymerization catalyst. Also described is a process for preparing a supported catalyst.Type: GrantFiled: March 2, 2001Date of Patent: December 2, 2003Assignee: Eastman Chemical CompanyInventors: Peter Borden Mackenzie, Christopher Moore Killian, Leslie Shane Moody, Jason Patrick McDevitt
-
Publication number: 20030216246Abstract: A metal complex comprising a transition metal complex of a bidentate or tridentate, dithioether ligand having utility as a catalyst component of an olefin polymerization catalyst composition in combination with an activating co-catalyst.Type: ApplicationFiled: March 17, 2003Publication date: November 20, 2003Inventors: Jessica A Cook, John Joseph Bielak
-
Publication number: 20030211934Abstract: The present invention aims at inhibiting a lowering in the modification ratio of a modified cation-exchange resin, in which part of the sulfonic acid groups have been modified with a thiol-containing amine compound and which is employed as a catalyst for producing bisphenol, during preservation.Type: ApplicationFiled: May 13, 2003Publication date: November 13, 2003Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Koichi Hayashi, Hideto Hayashi
-
Publication number: 20030195111Abstract: Complexes of the formulae Ia and Ib 1Type: ApplicationFiled: February 6, 2003Publication date: October 16, 2003Applicant: BASF AktiengesellschaftInventors: Marc Oliver Kristen, Peter Preishuber-Pfluegl, Benno Bildstein, Alexander Krajete
-
Patent number: 6627711Abstract: A process for polymerization of addition polymerizable monomers with a catalyst composition comprising a Group 4 or 5 metal bis(silane)amido complex corresponding to the formula: where the various substituents are as defined in claim 1.Type: GrantFiled: March 22, 2002Date of Patent: September 30, 2003Assignee: Dow Global Technologies Inc.Inventors: Michael J. Mullins, Phillip S. Athey, Peter N. Nickias, Jorge Soto, Harold W. Boone, R. Vernon Snelgrove
-
Patent number: 6620939Abstract: This disclosure relates to a method for producing and using catalysts in the production of bisphenols, and in particular to a method for producing catalysts which contain poly-sulfur mercaptan promoters, and using these catalysts in the production of bisphenol-A and its derivatives.Type: GrantFiled: September 18, 2001Date of Patent: September 16, 2003Assignee: General Electric CompanyInventors: Jimmy Lynn Webb, James Lawrence Spivack
-
Patent number: 6620759Abstract: Mixtures of different 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 nickel 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: February 27, 2002Date of Patent: September 16, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Lynda Kaye Johnson, Joel David Citron
-
Publication number: 20030171209Abstract: The inventions disclosed herein are catalyst systems comprising a complex having one of the formulas LMX1X2 and LML′ and an activating cocatalyst, and use of the catalyst system in polymerizing olefinic monomers. In either of the foregoing formulas, L is a chelating ligand containing sulfur donors; M is a transition metal selected from either copper, silver, gold, manganese, iron, cobalt, palladium or nickel; X1 and X2 are independently selected from either halides, hydride, triflate, acetate, borate, alkyl, alkoxyl, cycloalkyl, cycloalkoxyl, aryl, thiolate, carbon monoxide, cyanate or olefins; and L′ is a bidentate ligand selected from either dithiolene, dithiolate, diphosphine, bisimine, bispyridine, phenanthroline, oxolate, catecholate, thiolatoamide, thiolatoimine or thiolatophosphine.Type: ApplicationFiled: March 8, 2002Publication date: September 11, 2003Inventors: Kun Wang, Abhimanyu Onkar Patil, Stephen Zushma, Ernestine Williams Hill, Edward Ira Stiefel
-
Publication number: 20030162652Abstract: The present disclosure is directed to a catalyst composition used in the production of aromatic carbonates, and in particular to a catalyst composition which comprises an activating solvent. In one embodiment the disclosure relates to a catalyst composition which comprises to a combination of two activating solvents, a first activating solvent chosen for its coordinative properties, and a second activating solvent chosen for its dielectric constant properties. In alternative embodiments, the present disclosure also pertains to a method for producing aromatic carbonates using the catalyst compositions disclosed herein.Type: ApplicationFiled: February 25, 2002Publication date: August 28, 2003Applicant: General Electric CRDInventor: Grigorii Lev Soloveichik
-
Publication number: 20030088130Abstract: This disclosure relates to a method for producing and using catalysts in the production of bisphenols, and in particular to a method for producing catalysts which contain poly-sulfur mercaptan promoters, and using these catalysts in the production of bisphenol-A and its derivatives.Type: ApplicationFiled: September 18, 2001Publication date: May 8, 2003Applicant: General Electric Company.Inventors: Jimmy Lynn Webb, James Lawrence Spivack
-
Patent number: 6521561Abstract: The present invention relates to a method and catalysts for the stereoselective addition of a nucleophile to a reactive &pgr;-bond of a substrate. The chiral, non-racemic catalysts of the present invention constitute the first examples of catalysts for nucleophilic additions that comprise a main-group metal and a tri- or tetra-dentate ligand.Type: GrantFiled: May 1, 1998Date of Patent: February 18, 2003Assignee: President and Fellows of Harvard CollegeInventors: Eric N. Jacobsen, Matthew S. Sigman
-
Publication number: 20030023012Abstract: A catalyst for bulk polymerization comprising an organometallic compound represented by specified formula and a thiol is provided. The specified organometallic compound is a metallocene compound such as titanocene or zirconocene. The use of this bulk polymerization catalyst comprising a metallocene compound and a thiol enables stable bulk polymerization of a polymerizable unsaturated compound such as an acrylic monomer, the reaction control of which has been difficult in the bulk polymerization of the prior art.Type: ApplicationFiled: September 26, 2002Publication date: January 30, 2003Applicant: Soken Chemical & Engineering Co., Ltd.Inventors: Syuji Okamoto, Hiroshi Ueno
-
Patent number: 6511934Abstract: A catalyst composition for the polymerization of olefins is provided, comprising a transition metal precursor containing sulfur ligands and an activating co-catalyst.Type: GrantFiled: October 17, 2000Date of Patent: January 28, 2003Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Jessica Ann Cook, John Joseph Bielak
-
Patent number: 6509291Abstract: The present invention pertains to a process for sulfiding a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an S-containing organic additive wherein the catalyst composition is first contacted with an organic liquid, followed by the catalyst being contacted with hydrogen and a sulfur-containing compound in the gaseous phase. The invention also pertains to the sulfided catalyst composition and its use in hydrotreating. Catalysts sulfided by the process according to the invention show a higher activity than the same catalysts which have not been sulfided. It is preferred to carry out the process according to the invention ex situ, where it solves the problem of difficult start-up and the formation of undesirable side products in the hydrotreating unit. The organic liquid may be a hydrocarbon with a boiling range of about 150-500° C., preferably white oil, gasoline, diesel, gas oil, or mineral lube oil.Type: GrantFiled: April 10, 2001Date of Patent: January 21, 2003Assignee: Akzo Nobel N.V.Inventor: Sonja Eijsbouts
-
Patent number: 6506704Abstract: A process for forming neutral late transition metal chelates useful as polymerization catalysts comprising contacting a bidentate ligand forming compound that is free of electron-withdrawing groups with a di(tertiary amine) late transition metal reagent in the presence of an inert liquid, an olefinic monomer or a polar liquid selected from nitrites, ethers, aromatic heterocyclic amines, alcohols, nitroalkanes, nitroaromatics or mixtures thereof. The process provides a solid product or a solution of a storage stable transition metal bidentate ligand containing catalyst product which remains active for an extended storage period. Alternately, the present process can be conducted in situ in a polymerization zone of olefinic polymerization.Type: GrantFiled: March 23, 1999Date of Patent: January 14, 2003Assignee: Cryovac, Inc.Inventors: Donald Albert Bansleben, Eric Francis Connor, Robert Howard Grubbs, Jason Ivan Henderson, Todd Ross Younkin
-
Patent number: 6503864Abstract: A process for the sulfiding of a hydrodesulfurization catalyst for example in a distillation column reactor. The catalyst in the distillation column reactor is first dried using nitrogen and the reactor is filled with a sulfiding solvent and circulation begun. The reactor is heated to a temperature above the decomposition temperature of the sulfiding agent to be used and the sulfiding agent charged to the reactor. When sulfiding agent breakthrough is noted in the overheads the temperature is raised and held until sulfiding is complete.Type: GrantFiled: February 8, 2001Date of Patent: January 7, 2003Assignee: Catalytic Distillation TechnologiesInventors: Mitchell E. Loescher, Gary G. Podrebarac, Purvis K. Ho
-
Publication number: 20030004053Abstract: A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbonylation catalyst system that includes an effective amount of a Group VIII B metal source; an effective amount of a bromide composition; an effective amount of an activating organic solvent; an effective amount of a combination of inorganic co-catalysts comprising a lead source and a copper source; and an effective amount of a base.Type: ApplicationFiled: July 8, 2002Publication date: January 2, 2003Inventors: Grigorii Lev Soloveichik, Kirill Vladimirovich Shalyaev, Marsha Mottel Grade, Bruce Fletcher Johnson