Abstract: The present invention relates to a novel encapsulated organometallic cluster complex catalyst and to a process for the preparation thereof. The oxo-bridged organometallic cluster complex of the invention has at least one atom of cobalt and manganese encapsulated in micro and mesoporous porous solids like aluminosilicate zeolites, aluminophosphates, carbon molecular sieves, silica and is particularly effective for oxidation of aromatic alkyl groups to the carboxyl groups in high yields.

Abstract: A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts.

Abstract: A catalyst having catalytically active material supported on a carrier matrix. The catalytically active material may be a mixed-valence, nanoclustered oxide(s), an organometallic material or a combination thereof. The supported catalytic material is particularly useful for catalyzing oxygen reduction in a fuel cell, such as an alkaline fuel cell.

Abstract: Disclosed are ethylene and butadiene copolymers and a catalytic system usable for the synthesis of these copolymers. The copolymers have a molar content of units resulting from butadiene of ?8%, said units comprising trans-1,2 cyclohexane linkages, and a number-average molecular mass Mn of ?40,000 g/mol. The catalytic system includes: (i) an organometallic complex represented by one of the following formulae A or B: where Ln represents a lanthanide and X a halogen, where, in the formula A, two ligand molecules Cp1 and Cp2 each consisting of a fluorenyl group, are attached to Ln, where, in the formula B, a ligand molecule consisting of two fluorenyl groups Cp1 and Cp2, joined together by a bridge P of formula MR2, where M is an element of column IVa and R is an alkyl with 1 to 20 carbon atoms, is attached to Ln, and (ii) a co-catalyst selected from an alkylmagnesium, an alkyllithium, an alkylaluminium, a Grignard reagent, or a mixture of these constituents.

Abstract: A metal compound obtained by a process comprising the step of contacting, in a specific ratio, a compound represented by the formula BiL1r, a compound represented by the formula R1s-1TH, and a compound represented by the formula R23-nJ(OH)n; a catalyst component for addition polymerization comprising the metal compound; a catalyst for addition polymerization using the catalyst component; and a process for producing an addition polymer using the catalyst.

Abstract: A method of preparing non-platinum composite electrocatalyst for a fuel cell cathode, comprising: (1) preparing a carbon supporting titanium dioxide; (2) compounding the carbon supporting titanium dioxide with a transition metal macrocyclic compound in an organic solvent to produce a carbon supporting titanium dioxide-transition metal macrocyclic compound comprising 0.1–5 g/L of macrocyclic compound; and (3) thermal treating the resulting compound in step (2) at 100–1000° C. to produce a composite catalyst. The composite catalyst prepared with the method according to the present invention also has the advantages of better resistance to methanol and lower cost over the Pt/C catalyst. The said composite catalyst would have better prospects in application.

Abstract: An olefin polymerization catalyst system is prepared from a catalyst of formula I or II: R1–R7 and R1–R12 in formulae I and II, respectively, are each independently —H, -halo, —NO2, —CN, —(C1–C30)hydrocarbyl, —O(C1–C30)hydrocarbyl, —N((C1–C30)hydrocarbyl)2, —Si((C1–C30)hydrocarbyl)3, —(C1–C30)heterohydrocarbyl, -aryl, or -heteroaryl, each being unsubstituted or substituted with one or more —R8 and —R12 groups, respectively. Two R1–R7 can be joined to form a cyclic group. R8 in formula I is -halo, —(C1–C30)hydrocarbyl, —O(C1–C30)hydrocarbyl, —NO2, —CN, —Si((C1–C30)hydrocarbyl)3, —N((C1–C30)hydrocarbyl)2, —(C1–C30)heterohydrocarbyl, -aryl, or -heteroaryl. T in formula I is —CR9R10— wherein R9 and R10 are defined as for R1 above. R12 is independently -halo, —NO2, —CN, —(C1–C30)hydrocarbyl, —O(C1–C30)hydrocarbyl, —N((C1–C30)hydrocarbyl)2, —Si((C1–C30)hydrocarbyl)3, —(C1–C30)heterohydrocarbyl, -aryl, or -heteroaryl. E, M, m, X, Y, and n in formulae I and II are defined herein.

Abstract: The invention relates to a method for producing racemic metallocene complexes by reacting bridged or non-bridged transition metal complexes with cyclopentadienyl derivatives of alkaline or alkaline earth metals and optionally, subsequently substituting the phenolate ligands.

Abstract: This invention relates to novel double metal cyanide (DMC) catalysts for the production of polyether polyols by polyaddition of alkylene oxides onto starter compound comprising active hydrogen atoms, wherein the catalyst contains a) double metal cyanide compounds, b) organic complex ligands other than c) and c) two or more complex-forming components from the classes of compounds comprising functionalised polymers, glycidyl ethers, glycosides, carboxylic acid esters of polyhydric alcohols, bile acids or the salts, esters or amides thereof, cyclodextrins, phosphorus compounds, ?,?-unsaturated carboxylic acid esters or ionic surface- or interface-active compounds. The catalysts according to the invention exhibit greatly increased activity in polyether polyol production.

Abstract: Novel polynuclear organometallic complexes useful as catalysts for the reversible deshydrogenation of alkanes and alkane group are disclosed. The novel compounds comprise a first transition, a second transition metal p-bonded to an ?5-aromatic ligand, and a pincer ligand. The pincer ligand comprises a 6p-electron aromatic ring having at least 2 ring atoms in an 1, 3 relationship bonded each to a neutral Lewis base through a bridge, the bridge being a diradical. The pincer ligand binds the first transition metal through each of the Lewis bases and through the ring atom adjacent to both Lewis bases and p-coordinates the second transition metal through all aromatic ring atoms. The first transition metal may also bond to 2 or 4 hydrogen atoms.

Abstract: Disclosed is a new catalyst composition comprising a bimetallic Co—Ru catalyst complexed with a N-heterocylcic ligand that is effective, economical, and provides improvements in oxidative stability in the one step synthesis of 1,3-propanediol (1,3-PDO) from ethylene oxide and synthesis gas. For example, cobalt-ruthenium-2,2?-bipyrimidine, 2,2?-dipyridyl, or 2,4,6-tripridyl-s-triazine catalyst precursors in cyclic ether solvents, such as 1,3-dioxolane, 1,4-dioxolane, 1,4-dioxane, and 2-ethyl-2-methyl-1,3-dioxolane, provide good yields of 1,3-PDO in a one step synthesis.

Abstract: The present invention relates to a novel class of shaped bodies containing metal-organic frameworks. Said metal-organic frameworks comprise at least one metal ion and at least one at least bidentate organic compound and contain at least one type of micro- and mesopores or micro- or mesopores. Said shaped bodies comprise at least one metal-organic framework material and may optionally contain further substances, in particular at least one supporting material.

Abstract: A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formulaCoAx?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chloride compound of the structure R2AlCl, where R is an alkyl group containing 2-8 carbon atoms; a trialkyl aluminum compound of the formula R3Al, where R is an alkyl group containing 2-8 carbon atoms; and a catalytic amount of water.

Abstract: There are provided: (I) a catalyst component for addition polymerization comprising: (i) a transition metal compound having (a) two cyclopentadiene type anion skeleton-carrying groups, which are linked with each other directly or through a bridging group, and (b) a hafnium atom as its central metal, and (ii) a transition metal compound having (a) two substituted cyclopentadiene type anion skeleton-carrying groups, which are not linked with each other, and (b) a zirconium atom or a titanium atom as its central atom; and (II) a process for producing a catalyst for addition polymerization, which comprises the step of contacting the above catalyst component with a co-catalyst component for activation.

Abstract: The present invention is directed to double metal cyanide catalysts (“DMC”) which are prepared by combining i) at least one metal salt; ii) at least one metal cyanide salt; iii) at least one organic complexing ligand; iv) at least one alkali metal salt; and, optionally, v) at least one functionalized polymer under conditions sufficient to form a catalyst; and adding a sufficient amount of the at least one alkali metal salt to the catalyst so formed in an amount such that the catalyst includes the at least one alkali metal salt in an amount of from about 0.4 to about 6 wt. % based on the total weight of the catalyst. The polyols produced in the presence of the catalysts of the present invention have reduced levels of high molecular weight tail.

Abstract: Methyllithium is prepared by reacting chloromethane with a dispersion lithium metal in an aromatic organic solvent with methyltetrahydrofuran.

Abstract: A compound of formula I: 1

Abstract: A catalyst system useful for polymerizing olefins is disclosed. The catalyst system includes an organometallic complex that incorporates a Group 3 to 10 transition metal and a hydroxyl-depleted calixarene ligand that is chelated to the metal. Molecular modeling studies reveal that organometallic complexes incorporating such calixarene ligands, when combined with an activator such as MAO, should actively polymerize olefins.

Abstract: Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a triple-decker bimetallic complex. The complex includes two Group 3-10 transition metals and a delocalized dianionic ligand that is pi-bonded to each of the metals. The behavior of the catalysts can be modified by choice of each metal, by the choice of the dianionic ligand, or by choice of the ancillary ligands. The invention provides a new way to make a large variety of catalyst systems.

Abstract: A metal compound obtained by a process comprising the step of contacting, in a specific ratio, a compound represented by the formula BiL1r, a compound represented by the formula R1s-1TH, and a compound represented by the formula R23-nJ(OH)n; a catalyst component for addition polymerization comprising the metal compound; a catalyst for addition polymerization using the catalyst component; and a process for producing an addition polymer using the catalyst.

Abstract: A contact product obtained by a process comprising the step of contacting a compound (a) represented by the formula, M1L1r, a compound (b) represented by the formula, R1s-1T1H a compound (c) represented by the formula, R2t-2T2H2, and a nonionic surfactant (d) having no active hydrogen; a catalyst component for addition polymerization comprising said contact product; a catalyst for addition polymerization obtained by a process comprising the step of contacting said catalyst component with a compound of a metal selected from the group consisting of metals of the Groups 3 to 12 and Lanthanide Series of the Periodic Table, and optionally an organoaluminum compound; and a process for producing an addition polymer comprising the step of polymerizing an addition polymerizable monomer in the presence of said catalyst.

Abstract: The present invention provides a process for preparing amino functionalized diene polymers with 1,4-trans linkage content equal to or greater than 70%. The invention also concerns polymers of such type, a rubber composition and a tire casing containing those polymers. The process of preparation according to the invention comprises polymerizing at least one diene monomer by means of a lithium catalytic system, which comprises at least one hydrocarbon solvent, one compound A of a IIIA group metal, one compound B of an alkaline earth metal and one aminolithium initiator C. Amino functionalized diene polymers with high 1,4-trans linkage content according to the invention are such that the amino function, situated at the end of the polymer chain, is a tertiary amino function, the rate of functionalization of said polymers being equal to or greater than 50% and the 1,4-trans linkage content being equal to or greater than 70%.

Abstract: A catlyst component obtained by a process comprising contacting (a), (b) and (c) described below, a catalyst for addition polymerization using the catalyst component, and a process for producing an addition polymer with the catalyst for addition polymerization:

Abstract: A dehydrogenation catalyst includes an organometallic pincer complex bonded to a mesoporous inorganic oxide support, the organometallic pincer complex possessing catalytic activity for alkyl group dehydrogenation. The pincer complex includes at least one element selected from Group VIII or Group IB of the Periodic Table of the elements, and at least one element selected from Group VA of the Periodic Table of the elements in each of two molecular arms, the Group VIII or Group IB element being bonded to each of the Group VA elements. The catalyst is advantageously employed in conjunction with catalytic distillation to permit the dehydrogenation of organic compounds at lower temperatures and at lower cost than conventional methods.

Abstract: 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.

Abstract: Disclosed is a new catalyst composition comprising a bimetallic Co—Fe catalyst, optionally complexed with a ligand selected from a N-heterocycle, phosphine, or porphorine ligand, that provides a lower cost alternative for the one step synthesis of 1,3-propanediol (1,3-PDO) from ethylene oxide and synthesis gas. For example, a catalyst containing cobalt carbonyl: iron carbonyl with no ligand, or a catalyst containing a cobalt carbonyl: octaethylporphine iron acetate provide moderate yields of 1,3-PDO in a one step synthesis under mild conditions.

Abstract: 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.

Abstract: Broad molecular weight polyethylene and polyethylene having a bimodal molecular weight profile can be produced with chromium oxide based catalyst systems employing alkyl silanols. The systems may also comprise various organoaluminum compounds. Catalyst activity and molecular weight of the resulting polyethylene may also be tuned using the present invention.

Abstract: The present invention provides an improved acyclic anionic six-electron-donor ancillary ligand suitable for being bonded in a transition metal complex. The present invention also provides a transition metal complex that includes at least one acyclic anionic six-electron-donor ancillary ligand which is suitable for use as an olefin polymerization catalyst. The complex includes a Group 3 to 10 transition or lanthanide metal and one or more anionic or neutral ligands in an amount that satisfies the valency of the metal such that the complex has a net zero charge. The present invention also discloses a method for making transition metal complex and a method for using the complex for olefin polymerization.

Abstract: A catalyst composition for living free radical polymerization. The catalyst composition includes a transition metal complex MXp and a ligand, wherein M is a transition metal; X is halogen, —NO2, —NCS, —NCO, —SCN, —CN, —N3, —SO4, carboxylate group, or —PF6; p is the valence of the transition metal, the ligand is represented by formula (I): wherein R1 can be the same or different and is C1-20 alkyl, C6-20 aryl, C7-20 alkylaryl, C7-20 arylalkyl, or heterocyclic groups; R2 can be the same or different and is H, C1-20 alkyl, C6-20 aryl, C7-20 alkylaryl, C7-20 arylalkyl, heterocyclic groups, alkyl sulfide groups, nitrile groups, alkylsilyl, or ester groups; n is an integer of 0 to 6; and A is deleted or an S or O atom, wherein the molar ratio of the transition metal complex MXp and the ligand is 1 to 4.

Abstract: A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises an activator and a bimetallic complex that incorporates two Group 3 to 10 transition metal atoms, which may be the same or different, and a neutral or anionic indigoid ligand. By proper selection of the indigoid skeleton and by modifying its substituents and transition metal centers, polyolefin makers can fine-tune the bimetallic complexes to control activity, enhance comonomer incorporation, and optimize polymer properties.

Abstract: An olefin polymerization catalyst system, comprising a catalyst represented by the general formula CrR4, wherein each R is independently a hydrocarbyl or substituted hydrocarbyl, with the proviso that R may not be a cyclopentadienyl group, an activator represented by the general formula, MQ2, where M is a Group II metal, where each Q is independently an alkyl, or substituted alkyl; and a support. The support may be organic or inorganic. Ethylene and one or more olefins may be polymerized by the catalyst system.

Abstract: 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.

Abstract: A series of novel late transition metal catalysts for olefin oligomerization have been invented. The catalysts demonstrate high activity and selectivity for linear &agr;-olefins.

Abstract: 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.

Abstract: Disclosed is a novel class of modified ruthenium catalysts useful in the one step synthesis of 1,3-PDO comprising (a) a cobalt component comprising one or more non-ligated cobalt compounds; and (b) a ruthenium component comprising in major part a ruthenium carbonyl compound ligated with a phospholanoalkane ligand, solubilized in an ether solvent, that provides potential improvements in cost and performance in one step hydroformylation/hydrogenation. For example, cobalt-ruthenium-bidentate, bis(phospholano)alkane catalyst precursors in ether solvents provide good yields of 1,3-PDO in a one step synthesis.

Abstract: Catalyst systems useful for olefin polymerization are disclosed. The catalysts include a bimetallic complex that incorporates two linked indenoindolyl groups, each of which is pi-bonded through its cyclopentadienyl ring to one of the metals Compared with conventional indenoindolyl complexes, the bimetallic complexes of the invention have enhanced ability to give polyolefins with desirably low melt indices. Certain bimetallic indenoindolyl complexes also provide a way to broaden polymer molecular weight distribution and thereby improve processability simply by regulating the amounts of comonomer and activator used in the polymerization.

Abstract: The present invention relates to an improved supported Ziegler-Natta catalyst especially useful for the olefin polymerisation, said catalyst comprising a carrier, an organomagnesium compound, a borate compound, and one transition metal compound.

Abstract: There are provided (asymmetric) complex catalysts comprising metal complexes and Lewis acids as components, the metal complex being of formula (1): 1

Abstract: A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts.

Abstract: A catalyst composition that is the combination of or the reaction product of ingredients comprising (a) an lanthanide compound, (b) an alkylating agent, (c) a nickel-containing compound, and optionally (d) a halogen-containing compound, with the proviso that the halogen-containing compound must be present where none of the lanthanide compound, the alkylating agent, and the nickel-containing compound contain a labile halogen atom.

Abstract: The present invention relates to a catalyst composition for polymerization of olefins and copolymerization of olefins with alpha-olefins comprising (a) catalyst precursor comprising at least one Ziegler-Natta compound, at least one metallocene compound, at least one titanate compound and/or at least one alcohol compound, a magnesium compound and a polymeric material, and (b) a cocatalyst comprising of an alkylaluminum compound, aluminoxane compound or mixtures thereof; and to a process for polymerization of olefins and copolymerization of olefins with alpha olefins using a catalyst composition according to the present invention.

Abstract: A cationic Group 3 or Lanthanide metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by an anionic multidentate ancillary ligand and two monoanionic ligands. The ancillary ligand and the transition metal form a metallocycle having at least five primary atoms, counting any &pgr;-bound cyclopentadienyl group in the metallocycle as two primary atoms. Olefin polymerization is exemplified.

Abstract: A catalyst system suitable for use in the production of high cis polybutadiene is disclosed. The catalyst system includes a cobalt salt of the formulaCoAx?, where A is a monovalent or divalent anion and x is 1 or 2; an alkyl aluminum chloride compound of the structure R2AlCl, where R is an alkyl group containing 2-8 carbon atoms; a trialkyl aluminum compound of the formula R3Al, where R is an alkyl group containing 2-8 carbon atoms; and a catalytic amount of water.

Abstract: A process for making ethylene copolymers is disclosed. Ethylene copolymerizes with an &agr;-olefin in the presence of a catalyst system comprising an activator and a silica-supported, bridged indenoindolyl metal complex having “open architecture.” The supported complex incorporates comonomers with exceptional efficiency, and the process gives ethylene copolymers having high molecular weights (Mw>100K) and very low densities (<0.910 g/cm3). Open architecture catalysts that include bridging through the indolyl nitrogen of the indenoindolyl framework are also described. Additionally, supported and unsupported indeno[1,2-b]indolyl catalysts provide exceptional activities in the preparation of elastomeric polypropylene and ethylene copolymers.

Abstract: 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.

Abstract: The present invention provides a catalytic system that can be used to prepare by polymerization diene elastomers comprising polyisoprenes and polybutadienes. The invention also provides a process for the preparation of the catalytic system and to a process using the catalytic system to prepare diene elastomers comprising polyisoprenes having a high cis-1,4 linkage content and polybutadienes. The catalytic system according to the invention is based on (a) a conjugated diene monomer, (b) an organic phosphoric acid salt of a rare earth metal, (c) an alkylating agent consisting of an alkylaluminium of the formula AlR3 or HAlR2, and (d) a halogen donor consisting of an alkylaluminium halide, and is such that said salt is suspended in at least one inert and saturated aliphatic or alicyclic hydrocarbon solvent and, the “alkylating agent:rare earth salt” molar ratio ranges from 1 to 5.

Abstract: A coordination catalyst system comprising at least one metallocene or constrained geometry pre-catalyst transition metal compound, (e.g., rac-ethylene bis(indenyl)zirconium dichloride), at least one non-metallocene, non-constrained geometry, bidentate transition metal compound or tridentate transition metal compound (e.g., tridentate 2,6-diacetylpyridine-bis(2,4,6-trimethylanaline)FeCl2) at least one support-activator (e.g., spray dried silica/clay agglomerate), and optionally at least one organometallic compound (e.g., triisobutyl aluminum), in controlled amounts, and methods for preparing the same. The resulting dual transition metal catalyst system is suitable for addition polymerization of ethylenically and acetylenically unsaturated monomers into polymers; for example, polymers having a broad molecular weight distribution, Mw/Mn, and good polymer morphology.

Abstract: A process for forming a coordination catalyst system comprising substantially simultaneously contacting: (I) pre-catalyst reactants comprising (a) at least one first ligand; and (b) at least one first transition metal suitable to form at least one metallocene or constrained geometry pre-catalyst compound (e.g., rac-ethylene bis(indenyl)zirconium dichloride); and optionally (c) at least one second ligand and (d) at least one second transition metal suitable to form at least one non-metallocene, non-constrained geometry, bidentate or tridentate transition metal compound (e.g., tridentate 2,6-diacetylpyridine-bis(2,4,6-trimethylanaline)FeCl2); and (II) further contacting, jointly or individually, the pre-catalyst compound(s) and optional bidentate or tridentate compound(s) with at least one support-activator agglomerate (e.g., spray dried silica/clay agglomerate). When individually contacted, the supported catalyst components can be mixed or blended.

Abstract: This invention relates to a catalyst composition suitable for a polymerization process comprising, in one embodiment, a particulate filler, mineral oil and at least one metal catalyst compound. In another embodiment, the particular filler is fumed.