Abstract: An olefin polymerization catalyst obtained by contacting a specific transition metal compound(A), an organoaluminumoxy compound (B) soluble in an aromatic solvent and water (C), and a process for producing an olefin polymer with said catalyst.

Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra-high molecular weight ethylene homopolymer.

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: The present invention relates to a composition of a carboxylate metal salt in combination with a heated polymerization catalyst to improve the flowability and operability of the catalyst. The invention also relates to methods for preparing the catalyst composition and to its use in a polymerization process.

Abstract: The present invention is directed to producing a resin which, when formed into a film, has excellent gas barrier and/or moisture barrier (low MVTR) properties. Further, the resin has a relatively high molecular weight distribution, preferably above 6, and has excellent processability/extrudability. The resin is produced using a cyclopentadienyl chromium compound, preferably a mono CpCr compound, on a support, preferably a silica support. A particularly preferred catalyst for use in the present invention comprises pentamethylcyclopentadienyidimethylchromiumpyridine. Preferably, the catalyst is used in a slurry polymerization process.

Abstract: A method for the treatment of catalyst or catalyst support material in an apparatus in which the treatment is carried out continuously in such a way that the physical and/or chemical conditions change during entry of the catalyst or catalyst support material into the apparatus and/or during exit thereof from the apparatus and/or the catalyst or catalyst support material is transported in the apparatus through zones (5, 6, 7) having different physical and/or chemical conditions.

Abstract: The present invention relates to a method of homo- or co-polymerization of &agr;-olefin by means of using a catalyst system which comprises the following components: (1) a solid complex titanium catalyst produced by means of a production method comprising the following steps: (a) preparing a magnesium compound solution by dissolving a magnesium halide compound and a compound of Group IIIA of the Periodical Table in a solvent of mixture of cyclic ester, one or more types of alcohol, a phosphorus compound, and an organic silane; (b) precipitating the solid particles by reacting said magnesium compound solution with a transitional metal compound, a silicon compound, a tin compound, or the mixture thereof; and (c) reacting said precipitated solid particles with a titanium compound and electron donors; (2) an organometallic compound of metal of Group IIIA of the Periodical Table; and (3) external electron donors comprising three or more types of organo-silicon compounds, wherein the melt flow rates of the homopoly

Abstract: A polymerization process for the preparation of vinylic polymers from the corresponding vinylic monomers which process comprises the step of reacting a vinylic monomer in the presence of a catalyst system comprising a) a compound of general formula (I) where M is any metal capable of coordinating to an enolate or delocalized enolate-like species; B1, B2, B3 and B4 are chosen from nitrogen, oxygen, sulphur or phosphorus containing moieties wherein each of said nitrogen, oxygen, sulphur or phosporus is linked to at least one carbon atom of an organic group and to M; X1 is selected from the group consisting of alkyl, H, halogen, alkoxy, thiol aryloxy, ester, b) a metal, complex of general formula (II) where A is selected from the group consisting of nickel, iron, cobalt, chromium, manganese, titanium, zirconium, vanadium and the rare earth metals; L1, L2, L3 and L4 are ligands and c) a Lewis acid of general formula (III) wherein at least one of W, Y or Z is capable of forming a co-ordination bond with A and the

Abstract: An olefin polymerization catalyst comprising the following components (A) and (B): Component (A): an ion-exchange layered silicate having an acid site of at most −8.2 pKa, the amount of the acid site is equivalent to at least 0.05 mmol/g of 2,6-dimethylpyridine consumed for neutralization; and Component (B): a compound of a transition metal belonging to Group 3 to Group 12 of the Periodic Table.

Abstract: Processes for the polymerization of olefins in which late transition metal complexes, such as nickel, iron, cobalt and palladium complexes, are used as a polymerization catalyst have improved polymer productivity when oxidizing agents are present during at least a portion of the polymerization. The polymers produced are useful as elastomers, for packaging films, and molding resins.

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: Polyethylenes are prepared having a density in the range 900-980 kg/m3 and a weight average molecular weight ≧375,000 characterized by a fracture toughness at −40° C. >20 kJ/m2 and a dynamic viscosity of <3000 Pa.s at 100 rad/sec. The polymers also having a die swell of 10-80% and show a desirable combination of physical and processing properties. The polymers are prepared by the use of catalysts comprising a metallocene component and a Ziegler component.

Abstract: The present invention relates to a chromium/silca-aluminophosphate catalyst, titanated under specific conditions and used for the homopolymerisation or the copolymerisation of ethylene. The polyethylene obtained with this catalyst has a high melt potential and a high shear resistance. The catalyst has a high level of activity.

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 are described solid procatalysts, catalyst systems incorporating the solid procatalysts, and the use of the catalyst systems in olefin polymerization and interpolymerization.

Abstract: The present invention relates to transition metal compounds and to polymerization catalyst systems employing said transition metal compounds.

Abstract: A process for preparing conjugated diene polymers by polymerizing conjugated diene monomers in the presence of a catalyst composition that is formed by combining an iron-containing compound, a hydrogen phosphite, and an organoaluminum compound.

Abstract: The present inventors has its objects to provide a polymerization catalyst component, a copper compound which can easily be synthesized and is stable. The present invention is related to a method of producing a polymer which comprises using a copper compound represented by the general formula CuXn, LCuXn or L(L′)CnXn (wherein L and L′ each represents a ligand, X represents a halogen atom or an alkoxy, thioxy, allyloxy, amino, secondary amino, tertiary amino, cyano, nitro, alkyl or allyl group, and n represents an integer of 0 to 2) as a catalyst and/or polymerization initiator in polymerizing a vinyl monomer whose polarity value e, when expressed in terms of absolute value, is not more than 1.5.

Abstract: Polymerizable alkanes are prepared by gas-phase polymerization in the presence of catalyst systems by a process in which the catalyst systems used are supported castalyst systems.

Abstract: There is described a process utilizing Ziegler-Natta catalysts for producing ethylene/olefin interpolymers which, for a given melt index and density, have a reduced melting peak temperature (Tm). The process involves contacting ethylene and at least one other olefin under polymerization conditions with a Ziegler-Natta catalyst and at least one modifier comprising at least one element from Group 15 and/or Group 16 in amounts sufficient to reduce the melting peak temperature of the ethylene/olefin interpolymer. Also described herein are novel ethylene/olefin interpolymers resulting from the process.

Abstract: An olefin polymer of an alkenyl hydrocarbon having 5 or more carbon atoms, wherein said olefin polymer is an amorphous polymer having a Mn of 300,000 and a Mw/Mn of 2.40 or less, and substantially not having a melting point, and a process for producing said olefin polymer which comprises polymerizing an alkenyl hydrocarbon having 5 or more carbon atoms with an olefin polymerization catalyst obtained by contacting: a specific transition metal compound(A), an organoaluminumoxy compound (B) soluble in an aromatic solvent and water (C).

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.

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.

Abstract: Processes are provided that produce organo-aluminoxane compositions. Said processes comprise: desiccating a first mixture, where said first mixture comprises organo-aluminoxane molecules intermixed with a solvent, to produce a first composition, where said first composition comprises organo-aluminoxane molecules; mixing said first composition with a solvent to produce a second mixture, where said second mixture comprises organo-aluminoxane molecules and said solvent; contacting said second mixture with a insolublization agent to produce said organo-aluminoxane compositions. A polymerization process using a catalyst that comprises an organo-aluminoxane composition is also provided.

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: The present inventors has its objects to provide a polymerization catalyst component, a copper compound which can easily be synthesized and is stable.

Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra-high molecular weight ethylene homopolymer.

Abstract: An olefin polymer selected from the group consisting of a 1-butene homopolymer, a copolymers of 1-butene with propylene and a copolymer of 1-butene with an alkenyl hydrocarbon having 5 or more carbon atoms, wherein said olefin polymer is an amorphous polymer having a polystyrene-reduced number average molecular weight of 200,000 and substantially not having a melting point,

Abstract: Copolymer of ethylene and of at least one alpha-olefin obtained by means of a catalytic solid base on chromium oxide deposited on an inorganic support, the said copolymer having a melt flow index HLMI, measured in g/10 min, an amount of alpha-olefin Q, pressed in g of alpha-olefin per kg of copolymer, a standard density SD, measured in kg/m3, at least equal to (952.75+5.40×log HLMI−0.79×Q) and a relatively broad molecular mass distribution, characterized by a ratio of the dynamic viscosities &mgr;0/&mgr;2 at least equal to (23.67−6.67×log HLMI).

Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymers and ultra high molecular weight ethylene copolymers. Catalyst systems used are selected from the group consisting of inorganic oxide supported titanium-containing catalyst systems, inorganic oxide supported organo-zirconium catalyst systems and inorganic oxide supported organo-hafnium catalyst systems.

Abstract: A polymerization catalyst which exhibits a high activity and a good hydrogen response and thus is suitable for the production of an ethylene polymer having a wide molecular weight range can be obtained by a method using a chromium compound, an organic aluminum compound and a carrier and comprising the following steps (a) to (d): (a) contacting a chromium compound with a carrier in the presence or absence of a solvent; (b) adding an organic aluminum compound to said contacted substances at a temperature of not higher than 60° C. in an amount such that the mixing ratio of said organic aluminum compound to said chromium compound falls within the range of from 0.5/1 to 100/1 as calculated in terms of the ratio of aluminum atom/chromium atom (Al/Cr molar ratio) and that the following relationship (1) is satisfied: log10t≦0.33log10C+0.

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.

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: A process for producing a chromium-based catalyst for the production of polyethylene, the process comprising providing a silica support having a surface area of at least 380 m2/g and a pore volume of at least 1.5 ml/g; impregnating the silica support with a liquid including a source of aluminum ions and a source of phosphate ions; neutralizing the resultant impregnated support with a neutralizing agent to provide a pH greater than 7 for the resultant neutralized support whereby aluminum phosphate forms in pores of the silica support; and, at any stage in the method, impregnating the silica support with a chromium component.

Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra-high molecular weight ethylene homopolymer.

Abstract: An olefin polymer selected from the group consisting of a 1-butene homopolymer, a copolymers of 1-butene with propylene and a copolymer of 1-butene with an alkenyl hydrocarbon having 5 or more carbon atoms, wherein said olefin polymer is an amorphous polymer having a polystyrene-reduced number average molecular weight of 200,000 and substantially not having a melting point, an olefin polymerization catalyst obtained by contacting a specific transition metal compound(A), an organoaluminumoxy compound (B) soluble in an aromatic solvent and water (C), and a process for producing said olefin polymer with said catalyst.

Abstract: Novel donor ligand substituted &eegr;5-organyl chromium complexes which, in admixture with Lewis acids, such as methylaluminoxane, form highly active polymerization catalysts for &agr;-alkenes and mixtures thereof and for mixtures of &agr;-alkenes and unsaturated alkenes with a strained double bond.

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 catalyst system for the polymerization of olefins which includes a solid catalyst component and a cocatalyst. The solid catalyst component includes the contact product of silica, an alkyl magnesium-containing species, a compound having the structural formula E(YZ)mX4-m, where E is an atom of an element of Group 14 of the Periodic Table of the Elements; Y is an atom of an element of Group 16 of the Periodic Table of the Elements; Z is hydrogen, hydrocarbyl or mixtures thereof; X is hydrogen, halogen, hydrocarbyl or mixtures thereof; and m is an integer of 1 to 4 and a tetravalent titanium compound. The cocatalyst includes a mixture of at least two compounds having the structural formula AlRxX13-x, where R is the same or different and is hydrocarbyl; X1 is halogen; and x is an integer of 1 to 3 with the proviso that at least one of the compounds is defined by x being 3 and at least one of the compounds as defined by x being 1 or 2.

Abstract: The present invention is a solid catalyst component for polymerization of olefins prepared by contacting a magnesium compound, a tetravalent halogen-containing titanium compound, a diester of an aromatic dicarboxylic acid, an aromatic hydrocarbon and an organic aluminum compound containing a hydroxyl group represented by the following general formula (R1CO2)mAl(OH)3-m or aluminum hydroxide. The catalyst for polymerization of olefins comprising said solid catalyst component, an organic aluminum compound represented by the general formula R2pAlQ3-p and an organic silicon compound represented by the general formula R3qSi(OR4)4-q can retard the rate of forming a polymer having a low molecular weight or a low stereoregular polymer which is soluble in a polymerization solvent in slurry polymerization and can obtain a high stereoregular polymer in a high yield, and also can obtain a copolymer having an excellent property in a high yield in the copolymerization of olefins.

Abstract: A process for preparing a supported chromium-based catalyst for the production of high density polyethylene, by polymerising ethylene, or copolymerising ethylene and an alpha-olefinic comonomer comprising 3 to 10 carbon atoms, which comprises the steps of: a) providing an alumina-containing support; b) depositing a chromium compound on the support to form a chromium-based catalyst; c) dehydrating the chromium-based catalyst to remove physically adsorbed water by heating the catalyst at a temperature of at least 300° C. in an atmosphere of dry, inert gas; d) titanating the chromium-based catalyst at a temperature of at least 300° C.

Abstract: The present invention relates to a process for preparing a filled polymer composite comprising from 1 to 98 percent by weight of an interpolymer and from 2 to 99 percent by weight of a filler, said process comprising copolymerization in the presence of a cyclopentadienyl-containing transition metal catalyst and a filler, said filler having immobilized thereon a suitable cocatalyst.

Abstract: The invention provides a copolymer of propylene and pentene, together with a process for producing such copolymer. The copolymer has a random arrangement of propylene and 1-pentene, is theromplastic, has crystalline and amorphous sequences, and has a melt flow index in the range of about 0.01 to about 200 g/10 minutes. In the process, propylene and pentene are reacted in a reaction zone at a pressure of 60 kg/cm.sup.2 and temperature of 0-100.degree. C. for 20-480 minutes in the presence of a Ziegler-Natta catalyst or catalyst system.

Abstract: An addition-curable composition is comprised essentially of (A) a linear perfluoro compound containing at least two alkenyl groups per molecule and having a perfluoro structure in its backbone chain, (B) a linear perfluoro compound containing one alkenyl group per molecule and having a perfluoro structure in its backbone chain, (C) an organosilicon compound containing at least two hydrosilyl groups per molecule, and (D) a platinum family metal catalyst. A cured gel product obtained from the composition has a penetration of 1 to 200 (ASTM D-1403 using 1/4-scale cone). The composition can form a fluorine-containing cured gel product excellent in chemical resistance and solvent resistance, and low in moisture permeability.

Abstract: Metallocene complexes of a metal M selected from titanium, zirconium and hafnium, comprising at least one anionic group A containing an .eta..sup.5 -cyclopentadienyl ring co-ordinated with the metal M, wherein the anionic group is substituted in at least one position of the cyclopentadienyl ring with a radical having the formula:Ph*--(CR.sup.6 R.sup.7).sub.nwherein: R.sup.6 and R.sup.7 are independently hydrogen, halogen or a C.sub.1 -C.sub.4 alkyl group, preferably hydrogen, "n" is 0 or 1, preferably 1, Ph* is a C.sub.6 -C.sub.14 group comprising an aromatic ring linked to --CR.sup.6 R.sup.7 -- or to A and substituted with at least one and up to a maximum of three electron-attractor groups, on the condition that, when A is an .eta..sup.5 -indenyl group and "n" is 0, at least one Ph group is linked to A in position 1 or 3 of indenyl.These complexes can be used in (co)polymerization processes of .alpha.

Abstract: Novel catalysts are provided for the polymerization of olefins such as ethylene. These catalysts comprise a novel amorphous aluminophosphate comprising, on a microlevel, sheets of aluminophosphate as well as spheres of aluminophosphate plus a chromium compound. These new catalysts are surprisingly active; result in more co-monomer incorporation than prior art catalysts and reduce the amount of low molecular weight material in the product.

Abstract: The invention features linear copolymers prepared from mixtures of allenes and alkynes. The new copolymers have the formula: ##STR1## wherein R.sub.1 through R.sub.6 are, independently, H, an alkyl, an aryl, a phenyl or substituted phenyl, an alkoxy, or an aryloxyl, x+n is 1 to 10,000, and m is 1 to 10,000. The invention also features efficient methods of preparing the new copolymers using nickel or palladium catalysts.

Abstract: Olefin polymerisation uses catalysts based in pi-arene complexes of lanthanide metals in particular such catalysts supported on hydrophobic or hydroxylic surfaces particularly of alumina or silica halide surfaces particularly magnesium chloride. Such catalysts will polymerise ethylene and also propylene to give a largely isotactic polymer without using an electron donor to enhance stereo regularity. They also do not require co-catalysts to activate polymeriscation.

Abstract: Disclosed is a catalyst system for the homopolymerization and copolymerization of alpha-olefins having 2-8 carbon atoms, said catalyst system comprising a cyclopentadienyl Group 6b metal hydrocarbyl compound in which the metal has an oxidation state of +3, said Group 6b metal compound being supported on an inorganic support. The catalyst system may also contain a Group 2 or Group 3 metal alkyl compound.

Abstract: Novel tertiary amine-aluminoxane halide derivatives are disclosed along with olefin polymerization catalyst and polymerization processes using such derivatives in combination with metallocenes.