Abstract: It is an object of the present invention to provide a novel organometallic compound functioning usefully as a chain transfer agent and the like in polymerization reaction of a double-bond containing compound. The present invention provides an organometallic compound represented by the following general formula (1) and a production method thereof.

Abstract: The invention generally relates to chain shuttling agents (CSAs), a process of preparing the CSAs, a composition comprising a CSA and a catalyst, a process of preparing the composition, a processes of preparing polyolefins, end functional polyolefins, and telechelic polyolefins with the composition, and the polyolefins, end functional polyolefins, and telechelic polyolefins prepared by the processes.

Abstract: The present invention relates to a process for reversible hydrogen storage, to a material for reversible hydrogen storage and to the use of the material for reversible hydrogen storage.

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: This disclosure relates to olefin polymerization catalysts and compositions, their manufacture, and the production of polyolefins using specific catalyst compositions, including the use of chain shuttling agents in the olefin polymerization process. Specifically, this disclosure provides for dual headed and multi-headed chain shuttling agents (CSAs or MSAs) and for their use in preparing blocky copolymers. By controlling the ratio of dual-headed and multi-headed CSA sites to mono-headed CSA sites, a blocky copolymer can be provided having properties such as a narrow molecular weight distribution and/or improved melt properties.

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: The invention generally relates to chain shuttling agents (CSAs), a process of preparing the CSAs, a composition comprising a CSA and a catalyst, a process of preparing the composition, a processes of preparing polyolefins, end functional polyolefins, and telechelic polyolefins with the composition, and the polyolefins, end functional polyolefins, and telechelic polyolefins prepared by the processes.

Abstract: This disclosure relates to olefin polymerization catalysts and compositions, their manufacture, and the production of polyolefins using specific catalyst compositions, including the use of chain-shuttling agents in the olefin polymerization process. Specifically, this disclosure provides for dual-headed and multi-headed chain shuttling agents (CSAs or MSAs) and for their use in preparing blocky copolymers. By controlling the ratio of dual-headed and multi-headed CSA sites to mono-headed CSA sites, a blocky copolymer can be provided having properties such as a narrow molecular weight distribution and/or improved melt properties.

Abstract: It is an object of the present invention to provide a novel organometallic compound functioning usefully as a chain transfer agent and the like in polymerization reaction of a double-bond containing compound. The present invention provides an organometallic compound represented by the following general formula (1) and a production method thereof.

Abstract: The present invention provides an exfoliated clay/surfactant complex for inhibiting microorganisms, viruses or plant pests. The weight ratio of the exfoliated clay to the surfactant can range from 99/1 to 1/99. Preferably, the exfoliated clay is an inorganic layered clay on a nano scale and the surfactant is cationic, nonionic, anionic or amphoteric.

Abstract: A modified polyaluminosiloxane obtained by treating a polyaluminosiloxane with a silane coupling agent represented by the formula (I): wherein each of R1, R2 and R3 is independently an alkyl group or an alkoxy group; X is a methacryloxy group, a glycidoxy group, an amino group, a vinyl group or a mercapto group, with proviso that at least two of R1, R2 and R3 are alkoxy groups. The photosemiconductor element encapsulating material of the present invention is suitably used for, for example, photosemiconductor devices mounted with blue or white LED elements (backlights for liquid crystal displays, traffic lights, outdoor big displays, advertisement sign boards, and the like).

Abstract: A class of organic metal complexes with mixed ligands for organic light emitting diodes are designed and characterized as the formula:(L2L3M)n. In this formula: L2 is a bidentate ligand which has at least one coordinate atom of oxygen; L3 is a tridentate ligand with three chelate points; M is trivalent metal selected from the group consisting of Al, Ga, In, Tl, and Ir; and n is an integer of from 1 to 2. In Formula (3), X, Y independently represent CH or N and II, III are unsubstituted or substituted aryl or heteroalkyl groups. The substituent groups can be alkyl having 1–8 carbon atoms, halogen, cyano, amino, amido, sulfonyl, carbonyl, aryl, or heteroalkyl groups such as furan, thiophene, pyrrole, pyridine, etc.

Abstract: A method for forming carboxylate-alumoxane nanoparticles comprises subjecting a mixture comprising boehmite and carboxylic acid to mechanical shear. The method can be carried out at a temperature above ambient and preferably a temperature greater than 80° C., and can be carried out in the absence of a liquid phase.

Abstract: The present inventions relate to novel ionic liquids comprising a Lewis acid anion such as AlyR3y+1 wherein y is greater than 0 and R is independently selected from the group consisting of an alkyl group and halogen group. The cation of the ionic liquids can be selected from ammonium, sulfonium, and phosphonium cations wherein said cation generally has less than 14 total carbon atoms. The anion may contain an organic bridge to bond neighboring aluminum atoms that would otherwise be susceptible to leaching aluminum trichloride. The ionic liquids are useful in many applications and particularly as catalysts.

Abstract: The present invention relates to substituted boron or aluminum spiro compounds and their use in the electronic industry. The compounds of the invention are used as electron transport material, hole blocking material and/or as host material in organic electroluminescence and/or phosphorescence devices, as electron transport material in photocopiers, as electron acceptor or electron transport material in solar cells, as charge transport material in organic ICs (circuits) and in organic solid-state lasers or organic photodetectors.

Abstract: An olefin polymerization catalyst is provided which makes use of a modified methylaluminoxane and thus stably exhibits an activity equivalent to, or higher than, the activity achieved by polymethylaluminoxane. Specifically, the olefin polymerization catalyst is in the form of a modified methylaluminoxane preparation prepared from: an organoaluminum compound represented by the following general formula (I): R1mAlX3-m??(I) wherein R1 represents a straight-chained or branched hydrocarbon group selected from the group consisting of alkyl, alkenyl, and aryl groups having 2 to 20 carbon atoms; X represents a hydrogen atom, halogen atom, alkoxy group, or allyloxy group; and 0<m?3; and trimethyl aluminum, wherein the mole fraction of methyl group of the aluminoxane unit with respect to the total number of moles of the hydrocarbon group having 2 to 20 carbon atoms and methyl group present in the modified methylaluminoxane preparation is 65 mol % or greater.

Abstract: It is known to polymerize olefins using transition metal complexes and/or compounds. There is an ongoing search for catalysts for olefin polymerization which do not rely on transition metals as the active center. The present invention provides novel aluminum phosphinimine complexes, containing additional heteroatoms which are useful in the polymerization of olefins.

Abstract: A compound of formula (I) wherein X is aluminium, gallium or indium; each Y, which may be the same or different, is nitrogen or phosphorus; R1 and R2, which may be the same or different, are hydrogen, halogen or alkyl; and R3 to R7, which may be the same or different, are hydrogen or a saturated group, or R3 and R4, or R5 and R6 together represent a saturated divalent link thus completing a ring.

Abstract: Compositions comprising specific disodium hexahydrophthalate(HHPA) salts in combination with acid scavengers (such as organic calcium salts or dihydrotalcite complexes) that provide highly desirable and effective nucleating properties within polymer articles (such as polyolefins) are provided. Surprisingly, such a combination of HHPA salt and acid scavenger provides high crystallization temperatures, low haze, and/or high flexural modulus to the finished polymer product. Other sodium salt polymer nucleators (such as sodium benzoate) deleteriously react with calcium organic salt acid scavengers such that characteristically high crystallization temperatures are drastically reduced when in combination with calcium salts (such as calcium stearate). Also, sodium benzoate when combined with dihydrotalcite acid scavengers produce extremely high haze levels in the finished target polymer article, whereas the inventive compositions surprisingly reduce haze.

Abstract: It is known to polymerize olefins using transition metal complexes and/or compounds. There is an ongoing search for catalysts for olefin polymerization which do not rely on transition metals as the active center. The present invention provides novel aluminum phosphinimine complexes which are useful in the polymerization of olefins.

Abstract: It is known to polymerize olefins using transition metal complexes and/or compounds. There is an ongoing search for catalysts for olefin polymerization which do not rely on transition metals as the active center. The present invention provides novel aluminum phosphinimine complexes which are useful in the polymerization of olefins.

Abstract: It is known to polymerize olefins using transition metal complexes and/or compounds. There is an ongoing search for catalysts for olefin polymerization which do not rely on transition metals as the active center. The present invention provides novel aluminum phosphinimine complexes which are useful in the polymerization of olefins.

Abstract: A low-bulk density solid aluminoxane has an average particle diameter of 210 to 10,000 &mgr;m and a bulk density of from 0.01 to 1.0 g/cc. Representative solid aluminoxanes may be prepared from polymethylaluminoxane or mixed alkyl group aluminoxanes. The solid aluminoxanes are useful as catalyst carriers. When used to support a metallocene, the combination may be used, for example, as catalyst for olefin polymerization Also disclosed is a prepolymerized catalyst having an average particle diameter of from 500 to 5,000 &mgr;m, useful for olefin polymerization. An olefin is pre-polymerized in the presence of a metallocene catalyst component and a solid low bulk-density aluminoxane and, optionally, an organoaluminum compound.

Abstract: The invention relates to stable trimer isopropoxyalane of composition H5Al3(OiPr)4, wherein iPr is a (CH3)2CH radical. The invention also relates to a method for producing stable trimer isopropoxyalane, wherein AlH3 is reacted with Al(OiPr)3 or isopropanol in a molar ratio of 5:4 or 3:4 in a solvent or solvent mixture. The stable trimer isopropoxyalane is particularly suitable for use as a reducing agent in organic and inorganic synthesis, as a source for aluminium or aluminium oxide in the electronics or ceramics industry or to produce pigments.

Abstract: This invention relates to a multifunctional organic alkali metal initiator for the preparation of various kinds of star polymers by anionic polymerization, a process for making the initiator, a process using said initiator for making star polymers and the polymers obtained. The initiator can be represented by the formula: M.sub.a (RMe).sub.b, wherein M is selected from Sn, Ti, Al, Si and/or B; R is a hydrocarbyl group containing 8-100 carbon atoms, a=1-3, b=2.5-6.5, Me is an alkali metal which may be selected from Na and Li. The initiator was synthesized by reacting an organic alkali metal with a conjugated diene and/or a mono-olefin monomer, and then adding hetero-atom containing halide. The star polymer obtained has a radial molecular structure consisting of several macromolecular chain arms radiating from the initiator core, and its molecular weight distribution expressed by GPC presents a uniform singlet.

Abstract: The present invention relates to catalyst supports and improvements thereof for use with supported activators and supported transition metal catalyst systems. The invention specifically involves reacting a carrier containing reactive functionalities, e.g., hydroxyl containing silica, with halogenated organic compounds, e.g., fluorosubstituted phenols. The reaction is preferably carried out in the presence of a base. The reaction consumes undesired functionalities on the support to provide a halogenated support which is suitable for activators and catalytic precursors which are adversely affected by functionalities typically found on supports. The supported activators or catalytic precursors are prepared by contacting the precursors or activators with the halogenated support.

Abstract: Siloxy-aluminoxane compositions which are the reaction products of hydrocarbylsiloxanes substantially-free of Si--OH groups, and aluminoxanes and which have improved solubility and stability in solution even at up to 60 weight percent when compared to the original aluminoxane. The compositions in combination with metallocenes of transition lanithanide and actinide metals form catalysts which can be used in the polymerization of olefins such as ethylene.

Abstract: Neutral single-source molecular organic precursors containing tetradentate tripodal chelating ligands are provided that are useful for the preparation of films using chemical vapor deposition. These complexes can be generally represented by the formula ##STR1## wherein "M" is selected from the group consisting of a lanthanide, an actinide, a Group IIIA metal, a Group IIIA metalloid, a Group IVA metal, a Group IVA metalloid, a Group VA metal, a Group VA metalloid, a Group IIIB metal, a Group IVB metal, a Group VB metal, a Group VIB metal, a Group VIIB metal, and a Group VIIIB metal. The ligand "Z" can be present or absent, i.e., k=0-1, and is selected from the group consisting of hydrogen, halide, and a group bonded to "M" through N, O, P, S, As, Si, or C. In the tetradentate tripodal chelating ligand "E.sub.c " is N, P, or As, and m=0-1. When "E.sub.t " is N, P, or As, m=1, and when "E.sub.t " is O, S, or Se, m=0. Each "R.sup.1 " is independently selected from the group consisting of hydrogen, (C.sub.1 -C.

Abstract: The peroxides which include the O.sup.17 isotope, especially the hydrogen peroxides and peroxides and hydroperoxides prepared therefrom, are well adapted as nonradioactive labeled compounds for use in the medicinal and biological arts.

Abstract: This invention provides a process for forming with high selectivity an Al film having good electrical conductivity at the uncoated portions of a substrate coated with a masking material by means of chemical vapor deposition, using an Al selective deposition material having good electrical conductivity without subjecting it preliminarily to cracking, characterized in that the process employs a molecular compound of trimethyl aluminum and dimethyl aluminum hydride as a starting material gas. This invention also provides an Al selective CVD material characterized in that it is an organic Al compound represented by the following formula:(CH.sub.3).sub.3 Al--(CH.sub.3).sub.2 AlHobtained through intermolecular binding between trimethyl aluminum and dimethyl aluminum hydride.

Abstract: A process is disclosed for producing aluminum oxane by subjecting frozen water in a solution of trialkylaluminum in hydrocarbons to erosive action. In particular, a process is disclosed for producing methylaluminum oxane which is characterized in that frozen water in a solution of trimethylaluminum in hydrocarbons is subjected to erosive action which is exerted by mechanical action or by one or more intensive liquid jets of the reaction solution sweeping over the surface of the frozen water.

Abstract: Methylaluminoxane can be formed by the reaction of a tetraalkyldialuminoxane containing C.sub.2 or higher alkyl groups with trimethylaluminum with the trimethylaluminum being present in an amount which is not present in stoichiometric excess. Another embodiment of the present invention involves the synthesis of the methylaluminoxane by reaction of a trialkylaluminum compound or a tetraalkyldialuminoxane containing C.sub.2 or higher alkyl groups with water to form a polyalkylaluminoxane with is then reacted with trimethylaluminum. A third embodiment of the present invention involves the synthesis of the methylaluminoxane by reaction of the aforementioned polyalkylaluminoxane with trimethylaluminum and then with water.