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| Number | Title | Issue Date |
| 7649063 | Supported metal alkyl compound and its preparation Pulverulent solid which consists essentially of at least one metal alkyl compound bound chemically and/or physically to a finely divided, porous, mechanically stable and chemically inert support, has a proportion by weight of metal alkyl compound of at least 5% by w... | 01/19/2010 |
| 7309756 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 12/18/2007 |
| 7256150 | Preparation of olefin polymerization catalyst component A process for producing a Gp 2/transition metal olefin polymerisation catalyst component, in which a Gp 2 complex is reacted with a transition metal compound so as to produce an oil-in-oil emulsion, the disperse phase containing the preponderance of the Gp 2 metal b... | 08/14/2007 |
| 7234498 | Self-luminescent pneumatic tire The present invention relates to a pneumatic tire having a component comprising at least one elastomer containing olefinic unsaturation; a radioactive source of radiation; and a phosphorescent agent capable of emitting visible light upon exposure to said radiation. | 06/26/2007 |
| 7205035 | Thermoset composition, method, and article A curable composition includes a functionalized poly(arylene ether), an alkenyl aromatic monomer, an acryloyl monomer, and a polymeric additive selected from polystyrene, poly(styrene-maleic anhydride), poly(styrene-methyl methacrylate), polybutene, poly(ethylene-bu... | 04/17/2007 |
| 7202373 | Monocyclopentadienyl complexes Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one uncharged donor bound via a boron-containing bridge and comprising one or more atoms of group 15 and/or 16 of the Periodic Table of the Elements and is bound to a metal selected f... | 04/10/2007 |
| 7202190 | Supported catalyst system for the polymerization of olefins A supported catalyst system for polymerizing olefins comprising a) a support, b) a Lewis base of the formula M3R6R7R8 (I) wherein M3 is an element... | 04/10/2007 |
| 7153915 | Precision fragmentation assemblages and olefin polymerization catalysts made therefrom A precision fragmentation assemblage is disclosed, along with precision fragmentation assemblage catalysts derivable therefrom. A method for the preparation of a precision fragmentation assemblage is also disclosed, along with a method for preparing precision fragme... | 12/26/2006 |
| 7141636 | Method for producing a polymer The present invention relates to a process for preparing a catalyst, a novel polymer and a process for preparing the polymer. In particular, the invention provides a process for preparing a homopolymer and/or copolymer having an irregular particle structure and ... | 11/28/2006 |
| 7091289 | Solid catalyst component for polymerization of ethylene, preparation thereof and a catalyst containing the same The present invention provides a catalyst component used for homopolymerization or co-polymerization of ethylene, comprising at least one suitable electron donor compound supported on a composition containing magnesium and titanium, wherein the electron donor compou... | 08/15/2006 |
| 7087686 | Chain growth reaction process A process is disclosed for the preparation of zinc alkyl chain growth products via a catalysed chain growth reaction of an alpha-olefin on a zinc alkyl, wherein the chain growth catalyst system employs a group 3-10 transition metal, or a group 3 main group metal, or... | 08/08/2006 |
| 7071291 | Isolation, formulation and shaping of macrocyclic oligoesters Processes for isolating, formulating, and shaping macrocyclic oligesters were developed which allow efficient production of macrocyclic oligoesters substantially free from solvent, which may include additives, fillers, and catalysts. ... | 07/04/2006 |
| 7067604 | 1-butene polymer and molded product consisting of the polymer 1-butene based polymer satisfying following requirements (1″) to (4″) provides formed product having low stickiness, superior flexibility and transparency. (1″) Crystalline resin having melting point (Tm−P), not observed or in the range of 0 to ... | 06/27/2006 |
| 7025919 | Syndiotactic polypropylene fibers A process for the production of partially oriented polypropylene fibers from syndiotactic polypropylene. Syndiotactic polypropylene is heated to a molten state and extruded to form a fiber preform. The fiber preform is spun at a forward spinning speed within the ran... | 04/11/2006 |
| 7022806 | Methods for converting linear polyesters to macrocyclic oligoester compositions and macrocyclic oligoesters Macrocyclic oligoesters and compositions comprising macrocyclic oligoesters are prepared from intermediate molecular weight polyesters. In one embodiment, a diol is contacted with a dicarboxylic acid or a dicarboxylate in the presence of a catalyst to produce a comp... | 04/04/2006 |
| 7022793 | Process for the treatment of polymer compositions A process for the preparation of heterophasic elastomeric polymer comprising the step of polymerizing ethylene, an alpha-olefin CH2═CHL, where L is an alkyl, cycloalkyl or aryl radical with 1–10 carbon atoms and a non-conjugated diene in the presence of a cataly... | 04/04/2006 |
| 7015290 | Method of preparing a polymer under predetermined temperature conditions, and apparatus therefor A method of preparing a polymer under predetermined temperature conditions comprises conducting the polymerization within a closed reaction chamber configured such that most or all of an inner surface has heat exchange capability. The chamber's dimensions are such t... | 03/21/2006 |
| 6994914 | Macrocyclic polyester oligomers and processes for polymerizing the same A water slurry process is used to prepare a prepreg and to manufacture articles from macrocyclic polyester oligomers. In one embodiment, a process for preparing a water suspension of macrocyclic polyester oligomers includes the steps of contacting a macrocyclic poly... | 02/07/2006 |
| 6992157 | Synthetic polyisoprenes and a process for their preparation The present invention provides synthetic polyisoprenes having a high cis-1,4 linkage content and a process for their preparation. The synthetic polyisoprenes according to the invention have a cis-1,4 linkage content, measured by carbon-13 nuclear magnetic resonance ... | 01/31/2006 |
| 6984599 | Olefin polymerization catalysts based on hydroxyl-depleted calixarene ligands A catalyst system useful for polymerizing olefins is disclosed. The catalyst system includes an organometallic complex that incorporates a Group 3 to 10 transition metal and a hydroxyl-depleted calixarene ligand that is chelated to the metal. Molecular modeling stud... | 01/10/2006 |
| 6962968 | Purification of macrocyclic oligoesters Acid impurities, such as carboxylic acid-terminated polymers, are removed from macrocyclic oligoesters with ion exchange resins, resulting in macrocyclic oligoesters that are substantially free of acid impurities. The ion exchange resins can be regenerated anew and ... | 11/08/2005 |
| 6960550 | Catalyst systems for high melting thermoplastic elastomeric α-olefin polymers and plastomers A metallocene catalyst system component for polymerization of olefins includes at least one 2-arylindenyl ligand substituted on the 1-position by a substituted or unsubstituted alkyl, alkylsilyl, or aryl substituent of 1 to 30 carbon atoms. ... | 11/01/2005 |
| 6949613 | Polymerization initiator and use The application discloses supported initiators for transition metal mediated living free radical and/or atom transfer polymerisation comprising an initiator moiety attached to a support via a selectively cleavable link, and their use to produce polymers. ... | 09/27/2005 |
| 6919414 | Copolymers and films thereof Novel copolymers comprise ethylene and alpha olefins having from 3 to 10 carbon atoms and which have (a) a density in the range 0.900 to 0.940 (b) Mw/Mn of 2-3.4 (c) I21/I2 fr... | 07/19/2005 |
| 6908971 | Catalyst slurry feeding assembly for a polymerization reactor A catalyst slurry for a polymerization reactor can be prepared in a mixing tank and the catalyst slurry fed to one or more storage tanks. The storage tanks can include agitators so that the catalyst slurry is maintained at an essentially homogeneous solids-to-liquid... | 06/21/2005 |
| 6906150 | Heat exchanger polymerization reactors for manufacturing drag reducing agents Temperature control and efficient heat transfer are important to producing high quality polymer drag reducing agents from alpha-olefin and/or other monomers. Many polymerization reactions are exothermic, and controlling or minimizing the exotherm combined with low r... | 06/14/2005 |
| 6906147 | Catalytic systems This invention relates to single-component and multi-component catalytic systems using aryl titanates. Aryl titanate compounds are useful as catalysts and co-catalysts in single-component and multi-component catalytic systems (e.g., for the polymerization of macrocy... | 06/14/2005 |
| 6903169 | 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... | 06/07/2005 |
| 6852809 | Catalyst component for addition polymerization, catalyst for addition polymerization, and process for producing addition polymer A catalyst component for addition polymerization containing (A) a compound containing an atom of the Group II to the Group XII or Lanthanide series in which the lowest energy level of unoccupied molecular orbital having the valence p-type atomic orbital of the atom ... | 02/08/2005 |
| 6844290 | Oligomerization catalyst An oligomerization catalyst for olefins is obtainable from a) a chromium compound CrX3 and the at least equimolar amount, based on the chromium compound CrX3, of a ligand L or from an existing chromium complex CrX3L, in ... | 01/18/2005 |
| 6825287 | Polymerization process The invention provides for polymerization catalyst compositions, and for methods for introducing the catalyst compositions into a polymerization reactor. More particularly, the method combines a catalyst component containing slurry and a catalyst component containin... | 11/30/2004 |
| 6784261 | Imidochromium compounds contained in catalyst systems for olefin polymerization The present invention relates to catalyst system containing at least one imidochrome compound and at least one activation compound. This invention also relates to imidochrome compounds, to a method for olefin polymerization and to methods for producing said imidochr... | 08/31/2004 |
| 6730744 | Method for copolymerization and resulting copolymers The invention concerns a method for preparing block copolymers comprising steps which consist in: polymerising a first monomer using an organolanthanide catalyst wherein said catalyst in the form of a hydride complex of a trivalent metal from the group of rare earth... | 05/04/2004 |
| 6730750 | Methods for forming amorphous ultra-high molecular weight polyolefins for use as drag reducing agents The present invention is directed to improved drag reducing agents and methods of forming improved drag reducing agents comprising the steps of isomerizing olefin monomers to form isomerized olefin monomers, polymerizing the isomerized olefin monomers in the presenc... | 05/04/2004 |
| 6713572 | Ethylene copolymerization process A process as disclosed for producing a low density polyethylene using a particle form polymerization process and a titanium-containing catalyst wherein the ratio of comonomer to ethylene is at least about 1:1 and the titanium-containing catalyst is a special catalys... | 03/30/2004 |
| 6660679 | Catalyst system and its use in a polymerization process Disclosed are polymerization catalyst activator complexes prepared from the reaction of a carbenium salt and Lewis base containing an aromatic group. Also disclosed are polymerization catalyst activator complexes prepared via the reaction of a Group 13 el... | 12/09/2003 |
| 6642339 | Low density copolymers of ethylene and alpha-olefins Copolymers of ethylene and alpha olefins having from 3 to 10 carbon atoms and which have (a) a density in the range 0.900 to 0.940 (b) an apparent Mw/Mn of 2-3.4 (c) I21 /I2 from 16 to 21.5 (d) activation energy of flow from 28... | 11/04/2003 |
| 6617064 | Stabilized aluminum hydride polymorphs The present invention features methods for preparing stabilized -AlH3 and '-AlH3, compositions containing these alane polymorphs, e.g., energetic compositions such as rocket propellants, and methods for using the novel ... | 09/09/2003 |
| 6608149 | Polymerization process The invention provides for polymerization catalyst compositions, and for methods for introducing the catalyst compositions into a polymerization reactor. More particularly, the method combines a catalyst component containing slurry and a catalyst componen... | 08/19/2003 |
| 6562918 | Olefin polymerization catalyst, method for producing the same and method for producing olefinic polymer A catalyst for olefin polymerization, which is obtained by contacting (A) a compound of a transition metal of Groups 4 to 6 of the Periodic Table, (B) an organoaluminiumoxy compound, and optionally (C) a carrier with each other, and for which they are exp... | 05/13/2003 |
