Abstract: Compositions useful for activating catalysts for olefin polymerization, and methods for making same, are provided. Such compositions can be derived from at least: an organoaluminum compound, a carrier, an oxygen source, and, optionally, a Lewis base.

Abstract: Apparatus suited for removing carbon dioxide from gases are disclosed. The apparatus may employ bodies having a photocatalytic film. Associated methods and compositions are also disclosed.

Abstract: The present invention relates to a linear or branched diene elastomer having cyclic vinyl units. A linear diene elastomer according to the invention results from at least one conjugated diene and it comprises cyclic vinyl units in a mass content of greater than or equal to 15% while having a number-average molecular weight falling within a range of from 10,000 to 300,000 g/mol.

Abstract: Adducts are provided comprising MgCl2, ethanol and a Lewis base (LB), said compounds being present in molar ratios defined by the following formula MgCl2.(EtOH)n(LB)p in which n is from 2 to 6 and p has values satisfying the following equation p/(n+p)?0.1. The said adducts can be used as precursor in the preparation of high activity ZN catalysts.

Abstract: Supported catalyst systems are provided comprising (a) a transition metal compound, (b) an activator comprising (iii) an aluminoxane or (iv) a Group lilA metal or metalloid compound, and (c) a support material comprising an inorganic metal oxide, inorganic metal halide or polymeric material or mixtures thereof characterised in that the support material has been pretreated with a source of a transition metal atom. The preferred transition metal compounds are metallocenes and the source of the transition metal atom is typically a ferrous or cupric metal salt. The supported catalyst systems show improved activity and also may reduce fouling in gas phase fluidised bed processes.

Abstract: Solid supported organoiridium catalysts, a process for preparing such solid supported organoiridium catalysts, and the use of such solid supported organoiridium catalysts in dehydrogenation reactions of alkanes is provided. The catalysts can be easily recovered and recycled.

Abstract: A process for producing an olefin copolymerization catalyst, comprising the step of contacting, with one another, (A) a solid catalyst component containing a titanium atom, a magnesium atom and a halogen atom, (B) an organoaluminum compound and/or organoaluminumoxy compound, and (C) a nitrogen-containing aromatic heterocyclic compound, whose one or more carbon atoms adjacent to its nitrogen atom are linked to an electron-donating group, or a group containing an electron-donating group; and a process for producing an olefin copolymer using the an olefin copolymerization catalyst.

Abstract: The present invention discloses the use of two different new single site catalyst components based on different metals for preparing polymers having a broad or multimodal molecular weight distribution in a single reactor.

Abstract: The present invention relates to a supported, treated catalyst system and its use in a process for polymerizing olefin(s). More particularly, it provides a supported, treated catalyst system produced by a process comprising the steps of: (a) forming a supported bimetallic catalyst system comprising a first catalyst component and a metallocene catalyst compound; and (b) contacting the supported bimetallic catalyst system of (a) with at least one methylalumoxane-activatable compound.

Abstract: The present invention provides a method of producing oligomers of olefins, comprising reacting olefins with a chromium based catalyst under oligomerization conditions. The catalyst can be the product of the combination of a chromium compound and a pyridyl bis(oxazoline) or pyridyl bis(thiazoline) ligand. In particular embodiments, the catalyst composition can be used to dimerize ethylene to butenes.

Abstract: The present invention provides a catalyst composition for hydrogenation comprising: (1) a titanium compound (A) represented by the following formula (a): (2) a silyl hydride (B); and (3) a compound (C) represented by the following formula (e): The catalyst composition for hydrogenation can maintain activity longer and improve hydrogenation conversion of the conjugated diene polymers, particularly of the trans structure. The conjugated diene polymers produced according to the present invention can further perform good thermal stability and odorless.

Abstract: Metal oxide-polymer composites and methods of preparation.

Abstract: The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber, styrene-butadiene rubber, isoprene-butadiene rubber, or styrene-isoprene-butadiene rubber, that are amine functionalized and have a high trans or high vinyl microstructure. The catalyst system, in one embodiment, includes an organolithium amine compound, and one or more of (a) a group IIa metal salt of an amino glycol or a glycol ether, (b) an organoaluminum compound, or (c) an amine compound. The amine functionalized rubbery polymers can be utilized in tire tread rubbers where the rubbery polymers may provide desirable wear properties without substantially sacrificing other performance characteristic(s), e.g., traction properties.

Abstract: The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber, styrene-butadiene rubber, isoprene-butadiene rubber, or styrene-isoprene-butadiene rubber, that are amine functionalized and have a high trans microstructure. The catalyst system, in one embodiment, includes (a) an organolithium amine compound, (b) a group IIa metal salt of an amino glycol or a glycol ether, (c) an organoaluminum compound, and optionally (d) an amine compound. The amine functionalized rubbery polymers can be utilized in tire tread rubbers where the rubbery polymers may provide desirable wear properties without substantially sacrificing other performance characteristic(s), e.g., traction properties.

Abstract: A process for preparing 1-butene polymers comprising polymerizing 1-butene and optionally ethylene, propylene or higher alpha-olefin, in the presence of a catalyst system obtainable by contacting: a) metallocene compound of formula (I): wherein: M is a transition metal; p is an integer from 0 to 3; X, same or different, is a hydrogen atom, a halogen atom, or a hydrocarbon group; L is a divalent C1-C40 hydrocarbon radical; R1 is a C1-C40 hydrocarbon radical; T1, is a moiety of formula (IIa) or (IIb): wherein R2 and R3, are C1-C40 hydrocarbon radicals or they can form together a C3-C7-membered ring; R4 is C1-C40 hydrocarbon radicals; T2 and T3, are a moiety of formula (IIIa) or (IIIb): wherein R6 and R7, equal to or different from each other, are hydrogen atoms or C1-C40 hydrocarbon radicals; R5 is a hydrogen atom or a C1-C40 hydrocarbon radicals; with the proviso that if T1 is a moiety of formula (IIa) at least one between T2 and T3 is a moiety of formula (IIIb), and if T1 is a moiety

Abstract: The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a carboxylate metal salt. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(s). In particular, the polymerization catalyst system is supported on a carrier. More particularly, the polymerization catalyst comprises a bulky ligand metallocene-type catalyst system.

Abstract: There is disclosed a process for producing a catalyst. The process includes the steps of: a) combining a dendrimer polymer and metal salt in solution forming a metal ion complex; b) exposing the metal ion complex to a reducing environment forming a dendrimer metal nanocomposite; c) depositing the dendrimer metal nanocomposite onto a catalyst support material; d) removing a solvent from the dendrimer metal nanocomposite forming metal clusters; and e) removing the dendrimer polymer forming a catalyst. Additionally, there is disclosed a catalyst having a catalytic metal deposited on a substrate. The catalytic metal is formed in clusters having a size of from 2 to 150 atoms. In another aspect, the clusters may have a spacing of from 2 to 100 nanometers between adjacent metal clusters. Further, in another aspect, the metal clusters which comprise the catalyst have a size distribution in which 70% of the clusters are within 0.6 nm of the average diameter and 99% of the particles are within 1.

Abstract: The present invention relates to a catalyst composition for producing polyethylene terephthalate from terephthalic acid and ethylene glycol, comprising: (i) an antimony compound, being present such that the elemental antimony is in a range of about 15 ppm to less than 150 ppm; (ii) a zinc compound, being present such that the elemental zinc is in a range of about 40 to about 160 ppm; as well as a process for the preparation thereof.

Abstract: The present invention is directed to an amine containing catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber and styrene-butadiene rubber, having a high trans microstructure. The catalyst system, in one embodiment, includes (a) an organolithium compound, (b) a group IIa metal salt, (c) an organoaluminum compound, and (d) an amine compound which can be selected from (1) a heterocyclic aromatic compound which includes a ring structure with one or more nitrogen atoms as part of the ring; (2) a heterocyclic non-aromatic compound which includes a ring structure with two or more nitrogen atoms as part of the ring; (3) an aromatic compound including a ring structure substituted with at least one amine and at least one polar functionality containing group selected from a carboxyl group or a hydroxyl group; (4) a bicyclic chelating diamine compound; or (5) an aliphatic amine which includes a C5-C20 alkyl group.

Abstract: The invention comprises a process for the preparation and isolation of a non-amorphous cationic rhodium complex having the formula: [Rh(ligand)m(diolefin)]+X?, wherein the ligand is an enantiomerically enriched organic compound possessing one or two ligating phosphorus atoms.

Abstract: Alpha-olefin 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 ?-olefin are useful as monomers and chemical intermediates.

Abstract: The present invention is directed to a catalyst system for synthesizing rubbery polymers, such as polybutadiene rubber and styrene-butadiene rubber, having a high trans microstructure. The catalyst system, in one embodiment, includes (a) a barium salt of an alcohol that is soluble in a hydrocarbon solvent, and (b) an organomagnesium compound. In one example, the alcohol is a primary or secondary alcohol. The catalyst system can further optionally include an alkali metal alkoxide, an organolithium compound, an amine compound, or mixtures thereof.

Abstract: The invention relates to an initiator composition for anionic polymerization, comprising at least one alkali metal hydride selected from LiH, NaH, and KH, and at least one organylaluminum compound, and to a process for the anionic polymerization of styrene monomers or of diene monomers using the initiator composition.

Abstract: A thermoplastic composition comprises greater than or equal to about 60 wt. % polycarbonate; and about 10 wt. % to about 40 wt. % of a polyimide; wherein weight percents are based on a total weight of the thermoplastic composition.

Abstract: A process for preparing polyether alcohols by addition of alkylene oxides onto H-functional starter substances in the presence of multimetal cyanide catalysts, wherein the multimetal cyanide catalysts are microporous and have a specific surface area of more than 100 m2/g, determined by nitrogen adsorption at 77 K.

Abstract: A tethered ligand comprising the reaction product of an organofunctional silica and a ligand containing a functional group capable of reaction with said organofunctional silica, wherein the organofunctional silica is prepared from an alkyl silicate and an organofunctional silane is described. A supported catalyst is also described comprising additionally a source of catalytically-active metal. Methods for preparing the tethered ligand and supported catalyst are provided and uses of the supported catalyst for performing asymmetric reactions are claimed. The catalysts are readily separable from the reaction mixtures and may be re-used if desired.

Abstract: Generally, and in one form, the present invention is a method of making a benzene-modified compound on solid support that includes the steps of forming an (oxy)(aryl)carbene complex, esterifying the (oxy)(aryl)carbene complex to form an (ester)(aryl)carbene complex, and contacting the (ester)(aryl)carbene complex with a solid support such that the (ester)(aryl)carbene complex is bound to the solid support. In another form, the present invention includes compositions for the resulting (ester)(aryl)carbene complexes on solid support, such as any resulting solid support compounds formed after the initial coupling as well as those from any subsequent reaction, including those with linkers and on a solid support. The method and compositions of the present invention yield stable, durable, highly efficient and cost-effective as well as potentially biologically active lead compounds on solid support.

Abstract: A catalyst is synthesized by a method in which a catalytic metal such as platinum or another noble metal is dispersed onto a support member. A transition metal macrocycle is also adsorbed onto the support, and the support is heat treated so as to at least partially pyrolyze the macrocycle and anchor the transition metal to the support. The catalytic metal is alloyed with the transition metal either during the pyrolysis step, or in a separate step. The catalyst has significant utility in a variety of applications including use as an oxygen reduction catalyst in fuel cells.

Abstract: The process and catalyst of this invention can be utilized to synthesize homo and copolymers of conjugated diene monomers and vinyl aromatic monomers having high trans contents of greater than 60% with low melting points. These homo and copolymers of conjugated diene monomers and vinyl aromatic monomers can be utilized in tire tread and sidewall rubbers that exhibit outstanding wear and tear characteristics in the tread and excellent flexing properties in the sidewall. The rubber polymers of this invention are made utilizing an improved catalyst system. This catalyst system is comprised of (a) organo aluminum compounds, (b) organo lithium compounds, (c) a barium compound selected from barium salts of (i) di(ethylene glycol) ethyl ether, (ii) di(ethylene glycol) propyl ether, (iii) di(ethylene glycol) hexyl ether, (iv) di(N,N-dimethyl amino glycol) ethyl ether, (v) menthol and thymol in the presence of polar modifier consisting of water, alcohols, amines, thiols, phosphates and phosphites.

Abstract: Pnicogen chelate compounds which have two pnicogen-containing groups joined to one another via a xanthene-like or triptycene-like molecular skeleton and in which at least one pyrrole group is covalently bound via its nitrogen atom to each pnicogen atom form complexes with metals of transition group VIII which are useful as catalysts for the hydroformylation of olefins.

Abstract: The invention relates to a method for producing special transition metal compounds, to novel transition metal compounds and to the use thereof for polymerizing olefins.

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: The present invention relates to a catalyst for polymerization of a conjugated diene or the like, which is composed of a metallocene-type cation complex of a gadolinium compound. Examples of such catalyst include a metallocene-type cation complex of a trivalent gadolinium compound represented by the general formula (I): RaGdXb (wherein, Gd represents gadolinium; R represents a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group, or a substituted fluorenyl group; X represents an anion; “a” represents an integer of 1 or 2; and “b” represents an integer of 1 or 2). The present invention provides a catalyst by which polymerization of a conjugated diene or copolymerization of a conjugated diene and an aromatic vinyl compound can be carried out efficiently and inexpensively.

Abstract: A catalyst system for the polymerization of olefins comprising the product obtained by contacting: (A) a metallocene complex; (B) an organometallic aluminium compound of formula (II): Al[CH2—C(Ar)R4R5]xHy??(II) wherein Ar is a substituted or unsubstituted aryl group having from 6 to 20 carbon atoms; R4 is a linear or branched, saturated or unsaturated, C1–C10 alkyl, C6–C20 aryl, C7–C20 arylalkyl or C7–C20 alkylaryl; R5 is hydrogen or a linear or branched, saturated or unsaturated, C1–C10 alkyl, C6–C20 aryl, C7–C20 arylalkyl or C7–C13 alkylaryl group; x=2 or 3; y=3-x; and water; the molar ratio (B)/(C) being between 1:1 and 100:1. These catalysts show an improved activity with respect to known catalysts, wherein different aluminium compounds are used.

Abstract: A polymerization catalyst for polyester production which contains neither a germanium compound nor an antimony compound as a major component. It contains aluminum as the main metallic ingredient, has excellent catalytic activity, and gives a polyester which is effectively inhibited from suffering thermal degradation, during melt molding, without deactivating or removing the catalyst, and is excellent in thermal stability, stability to thermal oxidation, and hydrolytic resistance. The polymerization catalyst contains as a first metallic ingredient at least one member selected among aluminum and compounds thereof and further contains a phosphorus compound represented by a specific chemical formula. The polyester produced with this catalyst is usable as fibers, films, sheets, various moldings including hollow moldings, etc.

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.

Abstract: A metal compound obtained by a process comprising the step of contacting, in a specific ratio, a compound represented by the formula M1L1r, a compound represented by the formula R1s?1TH, and a compound represented by the formula R24?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 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: A method of producing cis-1,4-polydienes, the method comprising the step of contacting conjugated diene monomer with a lanthanide-based catalyst system in the presence of less than 20% by weight of organic solvent based on the total weight of monomer, organic solvent, and resulting polymer, where the lanthanide-based catalyst system is the combination of or reaction product of (a) a lanthanide compound, (b) an organoaluminum hydride, (c) a trihydrocarbylaluminum, and (d) a halogen-containing compound.

Abstract: This invention reveals a catalyst system for use in isothermal polymerizations which consists essentially of (a) an organolithium compound, (b) a calcium alkoxide and (c) a lithium alkoxide. The subject invention further discloses a process for synthesizing a random styrene-butadiene rubber having a low vinyl content by a process which comprises copolymerizing styrene and 1,3-butadiene under isothermal conditions in an organic solvent in the presence of a catalyst system which consists essentially of (a) an organolithium compound, (b) a calcium alkoxide and (c) a lithium alkoxide. An amine can also be added to the catalyst system to increase the molecular weight (Mooney viscosity) of the rubber.

Abstract: A hydrozirconated matrix for the production of polyolefins is disclosed. The hydrozirconated matrix is prepared from the reaction of an organozirconium composition and an olefin based material. A process is described for using the hydrozirconated matrix to prepare a range of polyolefin products.

Abstract: The invention relates to ferrocenyl ligands of general formula (II), the Sfc,S-enantiomer or the Rfc,R-enantiomer of the ferrocenyl ligands of formula (II) being enriched, and a method for producing such ligands.

Abstract: A catalyst composition that is the combination of or the reaction product of ingredients comprising (a) a lanthanide compound, (b) an organoaluminum hydride, and (c) a tin halide compound.

Abstract: The invention relates to bidentate organophosphorous ferrocenyl ligands containing ligands of formula (I), to their complex compounds and to their utilization in catalytic processes.

Abstract: The present invention provides a supported catalyst comprising (A) a polymer (B) a supporter, (C) a transition metal compound, and optionally (D) (a) a compound which can form an ionic complex by the reaction with the transition metal compound or (b) a specific oxygen-containing compound, and (E) an alkylaluminum compound. The supported catalyst according to present invention, which has a high activity, can be used for preparing a styrenic polymer with a high syndiotacticity. The supported catalyst can be used in combination with a cocatalyst, preferably an alkyl aluminoxane.

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: A catalyst system comprises 1) a group 4 organometallic catalyst and 2) an activator comprising a solid zirconium acid component and a metal alkyl. The catalyst system is inexpensive and is highly active for the polymerization of olefins. Preferred organometallic catalysts contain a cyclopentadienyl ligand, a phosphinimine ligand and or a ketimide ligand.

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 present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.