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| Number | Title | Issue Date |
| 7897707 | Catalyst activators, processes for making same, and use thereof in catalysts and polymerization of olefins A composition useful for activating catalysts for olefin polymerization is provided. The composition is derived from at least: carrier; organoaluminoxy compound; N,N-dimethylaniline and pentaflurophenol in amounts such that them are at least two equivalents of penta... | 03/01/2011 |
| 7741417 | Preparation of polymerization catalyst activators utilizing indole-modified silica supports A process for polymerizing propylene is provided. The process comprises contacting propylene and optionally one or more monomers with a catalyst system comprising a bis-indenyl Group 4 metallocene compound supported on silica, the silica treated with one or more org... | 06/22/2010 |
| 7642324 | Methods of using heterocycle-amine ligands, compositions, complexes, and catalysts Ligands, compositions, and metal-ligand complexes that incorporate heterocycle-amine compounds are disclosed that are useful in the catalysis of transformations such as the polymerization of monomers into polymers. The catalyst have high performance characteristics,... | 01/05/2010 |
| 7547751 | Process for the preparation of a polyolefin The invention related to a process for the polymerization of at least one aliphatic C2-20 or aromatic C4-20 hydrocarbyl mono- or multiolefin in the presence of a catalyst and an aluminum comprising co-catalyst, wherein the catalyst comprises a ... | 06/16/2009 |
| 7473746 | LTMC polymerization of unsaturated monomers A process for polymerizing unsaturated monomers is disclosed. The process comprises polymerizing, in the presence of a late transition metal catalyst (LTMC), a variety of unsaturated monomers which are traditionally, some of which are exclusively, made by free radic... | 01/06/2009 |
| 7408012 | Adhesive bonding systems having adherence to low energy surfaces This invention relates to (meth)acrylate-based polymerizable compositions and adhesive systems prepared therefrom, which include a alkylated borohydride or tetraalkyl borane metal or ammonium salt and a polymerizable siloxane. The inventive compositions and adhesive... | 08/05/2008 |
| 7332554 | Polymers with new sequence distributions The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers with new sequence distributions. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene,... | 02/19/2008 |
| 7332555 | Polymers with new sequence distributions The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel polymers with new sequence distributions. In particular, the invention relates to copolymers of an isoolefin, preferably isobutylene,... | 02/19/2008 |
| 7332609 | PEG-substituted pyridine ligands and related water-soluble catalysts Amphiphilic Group VIII metathesis catalysts, as can be used in a range of polymerization reactions and other chemical methodologies. ... | 02/19/2008 |
| 7314903 | Catalyst system for the polymerization of olefins An organometallic compound obtainable by contacting: a compound having the following formula (I), wherein: Ra is a hydrocarbon radical; Rb, Rc and Rd, are hydrogen atoms, halogen atoms, or hydrocarbon radicals; with a Lewi... | 01/01/2008 |
| 7312284 | Process for producing polar olefin copolymer and polar olefin copolymer obtained thereby A process for producing a polar olefin copolymer comprises copolymerizing a non-polar olefin and a polar olefin in the presence of a transition metal compound selected from Groups 4, 5, 6 and 11 of the periodic table, which is represented by the following formula (I... | 12/25/2007 |
| 7307130 | Polymerization reactor operability using static charge modifier agents The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a static charge modifier. The invention is also directed to the use of the catalyst composition in the polymerization of olefin(... | 12/11/2007 |
| 7285607 | Polymerisation of olefinic compounds This invention relates to a process for producing a polymeric product by the polymerisation of at least one olefinic compound in the form of an olefin or a compound including an olefinic moiety by contacting the at least one olefinic compound with a polymerisation c... | 10/23/2007 |
| 7285513 | Preparation of catalyst systems The present invention relates to a process for preparing a catalyst for olefin polymerization which is obtainable by bringing A) at least one organic transition metal compound, B) a mixture of at least two different organo metallic compound... | 10/23/2007 |
| 7271231 | Polymerization of olefins Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The polymerizations are catalyzed by selected transition metal compounds, and ... | 09/18/2007 |
| 7250470 | Crystallization of polypropylene using a semi-crystalline, branched or coupled nucleating agent A method of nucleating a propylene homo- or copolymer, the method comprising contacting the propylene polymer with a semi-crystalline branched or coupled polymeric nucleating agent under nucleation conditions. In one embodiment, the propylene homopolymer is characte... | 07/31/2007 |
| 7250471 | Impact resistance polymer blends of crystalline polypropylene and partially crystalline, low molecular weight impact modifiers Polymer blends that exhibit good impact resistance comprise a crystalline polypropylene matrix and a partly crystalline copolymer impact modifier with a molecular weight lower than that of the matrix polymer. The matrix polymer can comprise any crystalline propylene... | 07/31/2007 |
| 7238758 | Catalysts for polymerization or copolymerization of α-olefins, catalyst components thereof, and processes for polymerization of α-olefins with the catalysts The invention has an object to provide a catalyst for polymerizing or copolymerizing an α-olefin, catalyst constituent thereof, and method of polymerizing α-olefins with the catalyst, for production of α-olefin polymers or copolymers with high hydrogen response, ... | 07/03/2007 |
| 7238759 | Isotactic propylene copolymers, their preparation and use Unique copolymers comprising propylene, ethylene and/or one or more unsaturated comonomers are characterized as having: at least one, preferably more than one, of the following properties: (i) 13C NMR peaks corresponding to a regio-error at about 14.6 and... | 07/03/2007 |
| 7238756 | Polymerization process and control of polymer composition properties Methods of controlling the flow index and/or molecular weight split of a polymer composition are disclosed. The method of producing a polymer composition in one embodiment comprises incorporating a high molecular weight polymer into a low molecular weight polymer to... | 07/03/2007 |
| 7232871 | Propylene ethylene polymers and production process Ethylene propylene copolymers, substantially free of diene, are described. The copolymers will have a uniform distribution of both tacticity and comonomer between copolymer chains. Further, the copolymers will exhibit a statistically insignificant intramolecular dif... | 06/19/2007 |
| 7232872 | Polymerization processes The invention provides for a process to produce polymers utilizing a hydrofluorocarbon diluent. ... | 06/19/2007 |
| 7220695 | Supported activator This invention relates to supported activators comprising the product of the combination of an ion-exchange layered silicate, an organoaluminum compound, and a heterocyclic compound, which may be substituted or unsubstituted. This invention further relates to cataly... | 05/22/2007 |
| 7214750 | Polymerization processes The invention relates to new processes to produce polymers utilizing bayonette cooled slurry reactor systems and diluents including hydrofluorocarbons. ... | 05/08/2007 |
| 7214748 | Process for the production of an azo-catalyst for the polymerization of olefins The present invention relates to a process for the production of a catalyst by reacting metal compounds with azo ligands, the catalyst, the use of this catalyst as a polymerization catalyst, a process for olefin (co)polymerization with the aid of these catalysts, re... | 05/08/2007 |
| 7214638 | Olefin polymerization catalyst composition comprising group 13 amide derivatives Catalyst compositions that are highly tolerant of catalyst poisons for use in addition polymerizations comprising a catalytic derivative of a Group 4 metal complex, a cocatalyst, and a Group 13 metal amide compound. ... | 05/08/2007 |
| 7208559 | Ethylened polymer and molded object obtained therefrom An ethylene-based polymer which is an ethylene/C4 to C10 α-olefin copolymer and satisfies the following requirements [k1] to [k3]: [k1] melt flow rate (MFR) under a loading of 2.16 kg at 190° C. is in the range of 1.0 to 50 g/10 minutes; [k2] LNR defined as a scal... | 04/24/2007 |
| 7205363 | Polymerization processes using antistatic agents The invention relates to a process for the polymerization of olefins using an antistatic agent. In particular, the invention relates to a polymerization process to produce propylene polymers using a supported metallocene catalyst system and an antistatic agent. The ... | 04/17/2007 |
| 7199203 | Isotactic propylene copolymer fibers, their preparation and use Fibers comprising a propylene homopolymer or a copolymer of propylene and at least one of ethylene and one or more unsaturated comonomers exhibit desirable properties. The homopolymers are characterized as having 13C NMR peaks corresponding to a regio-err... | 04/03/2007 |
| 7199071 | Catalyst component for polymerization of olefins, catalyst containing the component and use of the same The present invention relates to a catalyst component suitable for olefin (co)polymerization, which comprises an aluminoxane supported on magnesium halide and contains more than 5% by weight of aluminum. The catalyst component according to the present invention is o... | 04/03/2007 |
| 7195806 | High gloss polyethylene articles The present invention includes an end use article (i.e., an article of manufacture) and a process for making the same, wherein the end use article has a relatively high gloss and exhibits excellent processability over a wide range of processing conditions. The end u... | 03/27/2007 |
| 7166553 | Mixed catalyst compositions for the production of polyolefins A solid, hydrocarbon insoluble catalyst composition comprising: A) a solid, particulated complex comprising moieties of at least magnesium, a Group 4 transition metal, and a halide; B) one or more α-amino-substituted- or α-imino-substituted-2-alkylpyridine compoun... | 01/23/2007 |
| 7166682 | Process to prepare a particulated metallocene catalyst with a modified aluminoxane and use in polymerization of olefins A process for the preparation of an olefin polymerisation catalyst comprising: a) reacting an aluminoxane and a Lewis base in an optionally halogenated hydrocarbon solvent to form a particulate suspension; b) reacting said suspension with a metallocene complex in an... | 01/23/2007 |
| 7157399 | Amine organoborane complex initiated polymerizable compositions containing siloxane polymerizable components In one embodiment the invention is a polymerizable composition comprising a) an organoborane amine complex; b) one or more of monomers, oligomers or polymers having olefinic unsaturation which is capable of polymerization by free radical polymerization; c) one or mo... | 01/02/2007 |
| 7153920 | Synthesis of functionalized high vinyl rubber This invention is based upon the discovery that rubbery polymers having a high vinyl content and a low degree of branching can be synthesized with an initiator system that is comprised of (a) a lithium initiator selected from the group consisting of allylic lithium ... | 12/26/2006 |
| 7148302 | Catalyst for polymerization of norbornene This invention is based upon the discovery that a catalyst system which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol is effective for polymerizing norbornene-functional monomers into polynorbornene-functional polymers. It has b... | 12/12/2006 |
| 7126031 | Bridged bi-aromatic ligands, catalysts, processes for polymerizing and polymers therefrom 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/... | 10/24/2006 |
| 7122497 | Olefin polymerization catalyst system A catalyst system useful for polymerizing olefins is disclosed. The catalyst system comprises a cocatalyst and a supported transition metal prepared from a halogen-containing Group 4–6 transition metal compound and an organoaluminum-siloxane containing mixture. Th... | 10/17/2006 |
| 7122611 | Catalyst for polymerization of norbornene This invention is based upon the discovery that a catalyst system which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol is effective for polymerizing norbornene-functional monomers into polynorbornene-functional polymers. It has b... | 10/17/2006 |
| 7109269 | Impact resistant polymer blends of crystalline polypropylene and partially crystalline, low molecular weight impact modifiers Polymer blends that exhibit good impact resistance comprise a crystalline polypropylene matrix and a partly crystalline copolymer impact modifier with a molecular weight lower than that of the matrix polymer. The matrix polymer can comprise any crystalline propylene... | 09/19/2006 |
