Abstract: This disclosure relates to ethylene interpolymer compositions and films prepared therefrom. Specifically: ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, ?int., greater than or equal to 0.01, satisfying 0.01×(Z?50)0.78??int.?0.01×(Z?60)0.78 inequality wherein Z is a normalized molecular weight defined by Z = M w M e where Mw and Me are the weight average and entanglement molecular weights, and; a residual catalytic metal of from ?0.03 to ?5 ppm of hafnium. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg/minute, a density from about 0.855 to about 0.975 g/cc, a polydispersity, M w M n , from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.

Abstract: Provided are a thin-film planarization method, a planarized thin-film formation method, and a thin-film formation varnish to be used in these methods, in which when forming a thin film using a thin-film formation varnish which includes an organic compound and an organic solvent, the varnish flow activation energy is set to no more than 28 kJ/mol.

Abstract: The present invention relates to a preparation method of olefin polymers using a catalyst composition containing a transition metal compound. In detail, the present invention provides a preparation method of olefin polymer using a catalyst composition comprising a transition metal compound, wherein the preparation method comprises introducing a scavenger to a continuous solution polymerization reactor in a specific range of amount to give the olefin polymer with good productivity.

Abstract: A supported catalyst system comprising a phosphinimine ligand containing catalyst on a porous inorganic support treated with a metal salt has improved reactor continuity in a dispersed phase reaction in terms of initial activation and subsequent deactivation. The resulting catalyst has a lower consumption of ethylene during initiation and a lower rate of deactivation. Preferably the catalyst is used with an antistatic agent.

Abstract: The present invention relates to a method for preparing a supported metallocene catalyst, and a method for preparing polyolefin using the same, in which the supported metallocene catalyst prepared from the simple process according to the method for preparing the supported metallocene catalyst of the present invention can apply to the polymerization of the polyolefin that is polymerized at low pressure or high pressure; the molecular weight distribution of polyolefin prepared can be easily controlled; and there are effects such that its catalyst activity is significantly higher than that of the existed supported metallocene catalyst, and the molecular weight distribution can be easily controlled.

Abstract: A process for preparing a polydiene, the process comprising the steps of (i) providing conjugated diene monomer; (ii) charging a nickel-based catalyst system to the conjugated diene monomer; and (iii) charging a modulating Lewis base to the conjugated diene monomer, to thereby polymerize the conjugated diene monomer in the presence of the modulating Lewis base, where said step of charging a modulating Lewis base is separate from said step of charging a nickel-based catalyst, and where said steps of providing conjugated diene monomer, charging a nickel-based catalyst system and charging a Lewis base form a polymerization mixture that includes less than 20% by weight of organic solvent based on the total weight of the polymerization mixture.

Abstract: Embodiments relate to a novel catalyst composition comprising a transition metal-containing compound, a PNP compound, an alkylating agent and a fluorine containing compound. Other embodiments relate to a method of polymerizing a diene monomer in the presence of the novel composition to form a diene-containing polymer having greater than 90% cis content.

Abstract: The invention is directed to a slurry phase polymerisation process for the preparation of ethylene-?-olefin copolymers by polymerising ethylene in the presence of a chromium containing catalyst and a diluent. The polymerisation takes place in the presence of·a chromium-containing catalyst, ·an aliphatic or alicyclic boron compound having at least one boron to carbon linkage and·an aliphatic or alicyclic group MA or group IMA element based compound having at least one metal or metalloid to carbon linkage wherein the chromium containing catalyst is not reduced by carbon monoxide after the activation in a non-reducting atmosphere and wherein the metal or metalloid is present in an amount higher than 1 ppm relative to the amount of diluent.

Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.

Abstract: A borohydride metallocene complex of a lanthanide, its process of preparation, a catalytic system incorporating it, a process for the copolymerization of olefins employing this catalytic system and an ethylene/butadiene copolymer obtained by this process, the butadiene units of which comprise 1,2-cyclohexane or 1,2- and 1,4-cyclohexane links.

Abstract: A borohydride metallocene complex of a lanthanide, its process of preparation, a catalytic system incorporating a borohydride metallocene complex and a process for the copolymerization of olefins employing this catalytic system.

Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst composition. In one aspect, this invention encompasses precontacting a metallocene with a borinic acid or boronic acid prior to contacting this mixture with the acidic activator-support and an organoaluminum compound.

Abstract: Disclosed is a method of producing a cyclic olefin polymer having a polar functional group, an olefin polymer produced by using the method, an optical anisotropic film including the olefin polymer, and a catalyst composition for producing the cyclic olefin polymer. In the olefin polymerization method and the catalyst composition for polymerization, since deactivation of the catalyst due to polar functional groups of monomers is capable of being suppressed, it is possible to produce polyolefins having a high molecular weight at high polymerization yield during polyolefin polymerization. Furthermore, the cyclic olefin having the polar functional groups has excellent polymerization reactivity and the activity of the catalyst composition including the same is maintained under a variable polymerization condition. Accordingly, the present invention is very useful for a mass-production process.

Abstract: The present invention generally relates to a catalyst and process for polymerizing an olefin and to a polyolefin prepared by the process.

Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging ?5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with low levels of long chain branching.

Abstract: A process for making polyethylene having an uncommon but valuable balance of broad molecular weight distribution and a low level of long-chain branching is disclosed. The process comprises polymerizing ethylene in a single reactor in the presence of an ?-olefin and a catalyst comprising an activator and a supported dialkylsilyl-bridged bis(indeno[1,2-b]indolyl)zirconium complex. The polyethylene, which has an Mw/Mn greater than 10 and a viscosity enhancement factor (VEF) of less than 2.5, is valuable for making blown films.

Abstract: A combinatorial method for identifying a catalyst composition for use in the homogeneous addition polymerization of an olefin monomers, said catalyst composition comprising a transition metal compound, a cocatalyst and a polymerization modifier, as well as catalyst compositions and improved olefin polymerization processes resulting therefrom.

Abstract: A process for producing a modified particle, which comprises the step of contacting a compound (a) defined by the formula, M1L13, a compound (b) defined by the formula, R1t-1TH, a compound (c) or (e) defined by the formula, R2m-uM2(OH)u or R24-nJ(OH)n, respectively, and a particle (d) with one another; a carrier comprising a modified particle produced by said process; a catalyst component (A) comprising a modified particle produced by said process; a process for producing a catalyst for addition polymerization, which comprises the step of contacting said catalyst component (A), a transition metal compound (B) and an optional organoaluminum compound (C) with one another; and a process for producing an addition polymer, which comprises the step of addition polymerizing an addition-polymerizable monomer in the presence of a catalyst for addition polymerization produced by said process.

Abstract: A process for the preparation of a catalyst system includes the steps of combining a Lewis base, an organic compound having at least one functional group containing active hydrogen, and an organometallic component with a particulate support material to provide an intermediate composition, and then combining the intermediate composition with one or more metallocene compound. The catalyst system is advantageously used for olefin polymerization.

Abstract: The present invention relates to a process for preparing a supported cocatalyst for olefin polymerization, which comprises reacting A) a support bearing functional groups, B) triethylaluminum and C) a compound of the formula (I), (R1)x—A—OH)y??(I) where A is an atom of group 13 or 15 of the Periodic Table, R1 are identical or different and are each, independently of one another, hydrogen, halogen, C1-C20-alkyl, C1-C20-haloalkyl, C1-C10-alkoxy, C6-C20-aryl, C6-C20-haloaryl, C6-C20-aryloxy, C7-C40-arylalky, C7-C40-haloarylalkyl, C7-C40-alkylaryl, C7-C40-haloalkylaryl or an OSiR32 group, where R2 are identical or different and are each hydrogen, halogen, C1-C20-alkyl, C1-C20-haloalkyl, C1-C10-alkoxy, C6-C20-aryl, C6-C20-haloaryl, C6-C20-aryloxy, C7-C40-arylalkyl, C7-C40-haloarylalkyl, C7-C40-alkylaryl or C7-C40-haloalkylaryl, y is 1 or 2 and x is 3 minus y.

Abstract: A salt of formula (I) [HEoR13]+[T1T2]? ??(I) wherein Eo is a nitrogen or phosphorous atom; R1 is hydrocarbon radical; T1 is a Lewis acid that forms a complex with T2, and T2 is a substituted pyrrolyl radical of formula (III) These salts can be used as cocatalyst in a process for the polymerization of alpha-olefins in conjunction with a transition metal organometallic compound.

Abstract: A process for the polymerisation of olefins is described involving the use of a catalyst system comprising a supported transition metal compound and an activator based on an organoborane and an aluminoxane. Preferably the transition metal compound is a metallocene complex. The support is pretreated with an organoaluminium compound and the process is particularly suitable for the gas phase preparation of copolymers of ethylene and alpha-olefins having a molecular weight distribution in the range 2.5-7.0 and a melt strength in the range 3-12 cN.

Abstract: A solid cocatalyst for olefin polymerization in which an ion-containing compound comprising a cation expressed by [R4M]+, wherein the group R are each individually selected from the group consisting of hydrogen atom and a substituted or non-substituted hydrocarbon group having from 1 to 30 carbon atoms with the exception of an aryl group; two or more groups R may form a ring by bonding with one another; at least one of the groups R is a hydrocarbon group having from 1 to 30 carbon atoms with the exception of an aryl group; and M represents nitrogen or sulfur, and a non-coordinating anion expressed by [A] said ion-containing compound is chemically bonded to a fine particulate carrier is used.

Abstract: New ligands and compositions with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.

Abstract: Ligands, compositions, metal-ligand complexes and arrays with substituted bridged bis-biaromatic ligands, and methods of making and using the same, are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into polymers. The catalysts have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.

Abstract: A process for the preparation of a catalyst system includes the steps of combining a Lewis base, an organic compound having at least one functional group containing active hydrogen, and an organometallic component with a particulate support material to provide an intermediate composition, and then combining the intermediate composition with one or more metallocene compound. The catalyst system is advantageously used for olefin polymerization.

Abstract: An olefin polymerization process is disclosed. The polymerization is performed in the presence of a clay, an activator, and a transition metal complex that has at least one pyridine moiety-containing ligand. The presence of clay increases the catalyst activity. The process is suitable for making ultra-high molecular weight polyethylenes (UHMWPE). The UHMWPE produced has increased bulk density.

Abstract: A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increased melt flow index, broadened molecular weight distribution, and improved thermal processability.

Abstract: Disclosed is a Ziegler-Natta catalyst for olefin polymerization comprising a metal cation of Group 4 or 14 of the Periodic Table (IUPAC 1976) that is coordinated to a. a carborane dianion group; b. a heteroatom anion, said heteroatom being preferably in the terminal position of a hydrocarbyl bridge comprising at least two carbon atoms, wherein at least one bridging carbon atom may be replaced by Si; and c. a valence group.

Abstract: A catalyst for olefin polymerization, comprising: a solid catalyst component comprising [A] a solid component having substantially no hydroxyl group, [B] a compound of a transition metal selected from Groups 3-11 of the Periodic Table, and [C] a mixture of an activator compound (C-1) capable of reacting with the transition metal compound [B] to form a metal complex having catalytic activity and an organoaluminum compound (C-2); and [D] an organomagnesium compound soluble in a hydrocarbon solvent which is obtained by reacting (i) an organomagnesium compound represented by the general formula: (Mt)?(Mg)?(R1)a(R2)b wherein Mt is a metal atom belonging to Groups 1-3 of the Periodic Table, R1 and R2 are hydrocarbon groups of 2-20 carbon atoms, and ?, ?, a and b are numerals satisfying the following relationship: 0??, 0<?, 0?a, 0<b, a+b>0, and r?+2?=a+b (where r is a valence of Mt) with (ii) a compound selected from an amine, an alcohol and a siloxane.

Abstract: A catalyst system comprising at least one metallocene, at least one cocatalyst, at least one support material and, if desired, further organometallic compounds is described. The catalyst system can advantageously be used for the polymerization of olefins and displays a high catalyst activity and gives a good polymer morphology without it being necessary to use aluminoxanes such as methylaluminoxane (MAO), which usually has to be used in high excess, as cocatalyst.

Abstract: The ?-olefin-aromatic vinyl compound copolymer of the present invention is obtained by using a transition metal compound represented by the following Formula (1) and a promoter component to carry out copolymerization, and it is a novel ?-olefin-aromatic vinyl compound copolymer having a low alternating property and a high blocking property, particularly a high blocking property related to the aromatic vinyl compound: wherein A1 and A2 represent a cyclopentadienyl group, a substituted cyclopentadienyl group or the like; Y1 and Y2 represent a substituted or unsubstituted alkylene group or the like, and at least one of them is the substituted or unsubstituted alkylene group; M1 represents titanium or the like; X1 and X2 represent a hydrogen atom, a halogen atom or the like.

Abstract: Catalyst precursor compounds having both (i) a polydentate ligand which comprises a cyclic moiety as well as a heteroatom and (ii) a protected hydride/hydrocarbyl ligand bonded to a metal atom, as well as olefin polymerization catalyst systems based thereupon, polymerization processes using such catalyst systems and polymers produced thereby.

Abstract: The present invention relates to a method for preparing a high 1,4-cis polybutadiene having a controlled cold flow and, more particularly, to a novel method for preparing a high 1,4-cis polybutadiene having a controlled cold flow that involves initiating polymerization of a 1,3-butadiene in the presence of a non-polar solvent using, as a polymerization catalyst, a complex prepared by mixing a neodymium compound with or without a conjugated diene compound, a halogenated organoaluminum compound or a halogenated organic compound, and an organoaluminum compound irrespective of the addition order of the catalyst; and adding an organoborane compound as a cold flow controller of 1,4-cis polybutadiene after a predetermined time of the polymerization. Accordingly, a high 1,4-cis polybutadiene having an efficiently controlled cold flow can be prepared without causing a significant increase in the Mooney viscosity (molecular weight), an odor (bad smell), and a reduction in 1,4-cis content and polymerization yield.

Abstract: New ligands, compositions, metal-ligand complexes and arrays with bridged bis-aromatic ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with metal centers have high performance characteristics, including higher comonomer incorporation into ethylene/olefin copolymers, where such olefins are for example, 1-octene, propylene or styrene. The catalysts also polymerize propylene into isotactic polypropylene.

Abstract: The present invention provides a method of synthesizing fluorided metallocene catalyst components comprising contacting at least one fluoriding agent comprising fluorine with one or more alkylated metallocene catalyst components comprising one or more non-halogen leaving groups to produce a fluorided catalyst component; wherein from less than 3 equivalents of fluorine are contacted for every equivalent of leaving group. The method of the invention is exemplified by the following reaction which takes place in a non-coordinating diluent such as pentane: wherein one or both of the “Cp” rings may be substituted with an R group as described herein, and may be bridged. The reaction can be run at any desirable temperature, desirably between 10° C. and 35° C. The reaction product of the BF3 and dimethyl zirconocene is the fluorided zirconocene. The mole ratio of the BF3 fluoriding agent and the starting metallocene is less than 2:1 (fluoriding agent:metallocene) in one embodiment, and less than or equal to 1.

Abstract: A process for the preparation of ligands for metallocene catalysts used in the production of amorphous polymers of alpha-olefins having high molecular weight and narrow molecular weight distributions, in which the isotactic sequences are more abundant than the syndiotactic ones.

Abstract: Novel ethylene styrene interpolymers having atactic ES repeating units and an alternating structure substantially higher than that predicted using Bernoullian statistics may be prepared in the presence of a transition metal phosphinimine compound and an activator.

Abstract: In metallocene complexes of a metal of transition group IV, V or VI of the Periodic Table, at least one substituted or unsubstituted cyclopentadienyl radical is bound to an element of group III of the Periodic Table which is in turn a constituent of a bridge between this cyclopentadienyl radical and the metal atom and bears an organonitrogen, organophosphorus or organosulfur group as sole further substituent.

Abstract: A supported catalyst for olefin polymerization comprises a combination of a novel metal oxide support and an activator which is an aluminoxane or a boron activator. The novel metal oxide support of this invention is a conventional particulate metal oxide support material (such as silica or alumina) which has been treated with a halosulfonic acid. A catalyst system which contains this novel catalyst support and a transition metal catalyst is highly active for olefin polymerization (in comparison to prior art catalyst systems which use a conventional metal oxide support).

Abstract: Dicationic or partially dicationic Group 4 metal compounds having utility has addition polymerization catalysts among other uses and a method of preparation.

Abstract: The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer.

Abstract: Catalyst precursor compounds having both (i) a polydentate ligand which comprises a cyclic moiety as well as a heteroatom and (ii) a protected hydride/hydrocarbyl ligand bonded to a metal atom, as well as olefin polymerization catalyst systems based thereupon, polymerization processes using such catalyst systems and polymers produced thereby.

Abstract: A catalyst system suitable for preparing substantially terminally unsaturated atactic polymers or copolymers of &agr;-olefins having a number average molecular weight in the range 300-500,000 comprises (A) a metallocene complex and (B) a cocatalyst comprising (i) a Group III Metal alkyl compound and (ii) a triaryl boron compound. Preferred metallocenes are those having alkyl ligands on the metal atom. The preferred Group III metal alkyl compound is triisobutyl aluminum and the preferred triaryl boron compounds is tris(pentafluorophenyl)boron.

Abstract: A process for production of an olefin polymer is provided which comprises polymerization of ethylene and/or &agr;-olefin of three of more carbons at a polymerization temperature of not lower than 120° C. with a catalyst comprising a specific metallocene compound having a substituted fluorenyl group, and a compound which reacts with the metallocene compound to form a cationic metallocene compound. The olefin polymer or copolymer produced by the process has narrow composition distribution, narrow molecular weight distribution, and a high molecular weight.

Abstract: A catalyst having high activity independent of the hydrogen concentration and low gel productivity in the polymerization of ethylene has been prepared.

Abstract: A novel process for the polymerization of olefins is provided. The process involves contacting at least one olefin with a Ziegler-Natta type catalyst in the presence of a specified compound that results in the production of polymeric products having a narrower molecular weight distribution. Also provide is a process for narrowing the molecular weight distribution of a polyolefin comprising contacting an olefin, a Ziegler-Natta catalyst and a compound specified herein. Further provided are novel polyethylenes, and films and articles produced therefrom.

Abstract: The process is characterized by the use of catalyst systems consisting of a single metallocene catalyst activated with mixtures of at least 2 co-catalysts. The co-catalysts are aluminium alkyls, aluminoxanes or boron compounds. Different active centers are produced in the catalyst through the use of these mixed co-catalyst systems, each having different rates of initiation and completion of the polymerization reaction, which give rise to polyolefins with different molecular weights, resulting in products with broad bimodal or multimodal molecular weight distributions and the incorporation of co-monomer can be controlled by appropriate selection of the metallocene and use of combinations of different types of co-catalysts, as well as by varying the reactor pressure, the reaction temperature and the molar ratios between the various components of the catalyst system.

Abstract: This invention provides compositions that are useful for polymerizing at least one monomer into at least one polymer.

Abstract: The invention is a catalytic process using a Group IV B transition metal component and an alumoxane component to polymerize ?-olefins to produce high crystallinity and high molecular weight poly-?-olefins.