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| Number | Title | Issue Date |
| 7943716 | Process for polymerizing 1-hexene or higher alpha-olefins A process for preparing a polymer containing derived units of one or more alpha olefins of formula CH2═CHW wherein W is a C3-C10 hydrocarbon radical and optionally from 0 to 81% by mol of derived units of propylene or 1-butene, com... | 05/17/2011 |
| 7569647 | Process for the copolymerization of ethylene A process for producing a copolymer of ethylene containing from 0.1 to 99% by mol of one or more derived units of alpha-olefins of formula CH2═CHA, wherein A is a C2-C20 alkyl radical, comprising contacting, under polymerization co... | 08/04/2009 |
| 7544826 | Monocyclopentadienyl complexes Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one bridged donor and at least one aryl group and a catalyst system comprising at least one of the monocyclopentadienyl complexes, and also processes for preparing them, the use of th... | 06/09/2009 |
| 7544749 | Polymerization catalysts, organic transition metal compounds, process for preparing polyolefins and polyolefins A catalyst system obtained by reacting at least one chiral transition metal compound and at least one cocatalyst, where the chiral transition metal compound is a transition metal compound of formula (Ia) or one of its enantiomers of the formula (Ia*), | 06/09/2009 |
| 7538174 | Isotactic 1-butene copolymers An isotactic 1-butene copolymer having a content up to 30% by mol of at least one alpha-olefin of formula CH2═CHZ derived units, wherein Z is a C3-C20 hydrocarbon group, having the following features: ... | 05/26/2009 |
| 7534847 | Copolymers of ethylene with α-olefins Copolymers of ethylene with α-olefins which have a molar mass distribution Mw/Mn of from 1 to 8, a density of from 0.85 to 0.94 g/cm3, a molar mass Mn of from 10.000 g/mol to 4 000 000 g/mol and a CDBI of less than 50% an... | 05/19/2009 |
| 7534841 | 1-butene polymer and process for the preparation thereof A 1-butene polymer optionally containing from 0 to 30% by mol of derived units of ethylene, propylene or alpha-olefin of formula CH2═CHZ, wherein Z is a C3-C20 linear or branched alkyl radical, having the following features: ... | 05/19/2009 |
| 7534341 | Discontinuous metering of catalysts and process auxilliaries into a gas-phase fluidized-bed reactor Method of metering at least one solid, particulate catalyst into a reactor containing a fluidized bed (11) of particles in an at least partly gaseous medium, in which the catalyst is metered discontinuously at prescribed time intervals into the fluidized bed ... | 05/19/2009 |
| 7531672 | Preparation of heterocyclic ketones The present invention relates to a process for preparing heterocyclic ketones of the formulae (I) and (la), by reacting a heterocyclic compound of the formula (II), with an α, β-unsaturated carboxylic acid of the formula (III), or with its anhydride of the formula... | 05/12/2009 |
| 7527175 | Metering of catalysts To meter catalysts into a reactor, the catalyst is firstly suspended in a hydrocarbon in a reservoir and the suspension obtained is kept in motion by stirring and then fed via a three-way metering valve and an ejector into the actual reactor, wherein the suspension ... | 05/05/2009 |
| 7517938 | Loop reactor with varying diameter for olefin polymerization Process for polymerizing at least one olefinic monomer selected from ethylene, propylene and 1-butene in a loop reactor in the presence of a polymerization catalyst at from 20 to 150° C., but below the melting point of a polymer to be formed, and a pressure of from... | 04/14/2009 |
| 7507782 | Transition-metal complexes with tridentate, nitrogen-containing ligands Transition metal complexes with tridentate, nitrogen-containing, uncharged ligand systems, a catalyst system comprising at least one of the transition metal complexes, the use of the catalyst system for the polymerization or copolymerization of olefins and a process... | 03/24/2009 |
| 7507688 | Monocyclopentadienyl complexes Monocyclopentadienyl complexes in which the cyclopentadienyl system bears at least one unsubstituted, substituted or fused, 5-membered heteroaromatic ring system bound via a specific bridge, a catalyst system comprising at least one of the monocyclopentadienyl compl... | 03/24/2009 |
| 7504354 | Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and process for preparing polyolefins The present invention relates to organometallic transition metal compounds of the formula (I), a catalyst composition comprising at least one of the organometallic transition metal compound and an olefin polymerization process in the presence of one of the catalyst ... | 03/17/2009 |
| 7485685 | Plastics pipes of polyolefins Plastics pipes comprise polyolefins which can be prepared by means of a fluorine-modified chromium catalyst and are used for transporting gases and liquids. ... | 02/03/2009 |
| 7476717 | Butene-1 homopolymer A 1-butene homopolymer having the following characteristics: intrinsic viscosity (I.V.)>0.7 dL/g isotactic triads (mm)>70%; 4,1 insertions400 M... | 01/13/2009 |
| 7470460 | Layered composite materials Layered composite materials which comprises a substrate made from a thermoplastic polymer, and comprise an intermediate layer arranged thereupon and a decorative layer applied to the intermediate layer, where the decorative layer is composed of a chromed metal. A he... | 12/30/2008 |
| 7468451 | Process for the production of halide metallocene compounds Process for preparing halide metallocene compounds comprising the step of reacting the dialkyl derivative with a halogenating agent of formula R3xTLw wherein: L is chlorine, iodine or bromine; R3 is hydrogen or a hydrocarb... | 12/23/2008 |
| 7468279 | Selection of polymerization catalysts and apparatus for carrying this out In a method of selecting polymerization catalysts, in particular Phillips catalysts for the polymerization of olefins, from a multiplicity of catalysts on the basis of their catalytic properties, a multiplicity of catalyst precursors or catalyst supports are convert... | 12/23/2008 |
| 7465818 | Process for the racemoselective synthesis of ansa-metallocenes A process for the racemoselective preparation of ansa-metallocene complexes of the formula (I), where R1, R1′, R2, R2′ are identical or different and are each hyd... | 12/16/2008 |
| 7465688 | Process for the isomerization of metallocene compounds An isomerization process comprising the step of contacting a slurry or a solution comprising the meso or meso-like form of one or more bridged metallocene compounds of group 4 of the Periodic Table of the Elements having C2 or C2-like symmetry ... | 12/16/2008 |
| 7459511 | Process for the polymerization of 1-butene A process for polymerizing 1-butene comprising the step of contacting under polymerization conditions 1-butene and optionally from 0 to 20% by mol of an alpha olefin with a catalyst system obtainable by contacting a bridget metallocene compound of formula (I) wherei... | 12/02/2008 |
| 7452949 | Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and preparation of polyolefins The present invention relates to organometallic transition metal compounds of the formula (I) ... | 11/18/2008 |
| 7446072 | Preparation of supported catalyst systems containing reduced amounts of aluminoxanes The present invention relates to a process for preparing a catalyst solid for olefin polymerization, comprising a finely divided support, an aluminoxane and a metallocene compound, which comprises a) firstly combining the finely di... | 11/04/2008 |
| 7427649 | Polyethylene blow molding composition for producing small containers The invention relates to a polyethylene composition with multi-modal molecular mass distribution, which is particularly suitable for blow molding of small containers with a volume in the range of from 200 to 5000 cm3 (=ml). The composition has a density i... | 09/23/2008 |
| 7417006 | Catalyst system for the polymerization of olefins A salt of formula (I) [HEoR13]+[T1T2]− (I) wherein Eo is a nitrogen or phosphorous atom; R1 is hydrocarbon radical; T1 is a Lewi... | 08/26/2008 |
| 7414005 | Preparation of catalyst compositions having improved activity The present invention relates to a process for preparing a catalyst composition for olefin polymerization, which comprises preparing a catalyst solid in a first step by bringing A) at least one support, B) at least one organic compound having at least one functional... | 08/19/2008 |
| 7407591 | Process for the reduction of activated chromium oxide catalyst Process for the reduction of a hexavalent chromium oxide based catalyst comprising contacting, under mixing conditions, a hexavalent chromium oxide based catalyst, with a molar excess, in respect of the chromium species, of a solid reducing agent and subjecting the ... | 08/05/2008 |
| 7405261 | Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and process for preparing polyolefins The present invention relates to compounds of the formula (I): where M1 is an element of group 3, 4, 5 or 6 of the Periodic Table, X are halogen, hydrogen, C | 07/29/2008 |
| 7390862 | Process for polymerizing 1-butene A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH2═CHT wherein T is a C3-C10 alkyl group, in the presence of a catalyst system obtainable by contacting a m... | 06/24/2008 |
| 7365137 | Multistep process for the (co) polymerization of olefins A multistep process for the polymerization of one or more olefins comprising a first step of polymerizing one or more of said olefins in the presence of a catalyst of the Ziegler-Natta type, a step wherein the polymer obtained in the first step is contacted with a c... | 04/29/2008 |
| 7358381 | Racemoselective preparation of bridged metallocene complexes having unsubstituted or 2-substituted indenyl ligands The invention relates to a process for preparing racemic metallocene complexes by reacting transition metal complexes with cyclopentadienyl derivatives of alkali metals or alkaline earth metals and heating the reaction mixture obtained in this way to a temperature i... | 04/15/2008 |
| 7348384 | Supported, titanized chromium catalyst and its use for preparing homopolymers and copolymers of ethylene Novel supported, titanized chromium catalysts for the homopolymerization of ethylene and the copolymerization of ethylene with α-olefins, a process for preparing them and to their use for the polymerization of olefins. ... | 03/25/2008 |
| 7342078 | Transition metal compound, ligand system, catalyst system and the use of the latter for polymerisation and copolymerisation of olefins A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which ... | 03/11/2008 |
| 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 |
| 7273940 | Catalysts for the polymerization of unsaturated compounds Bisimine compounds of the formula (I) where the symbols have the following meanings: A is a nonmetal selected from among N, S, O and P, R1 is ... | 09/25/2007 |
| 7268095 | Transition metal catalysts for (co) polymerizing of olefinic monomers A compound of the formula Ia or Ib; where, in the formula Ia, E1 is O, S, Se, Te, NR, CR2, or PR; E2, E... | 09/11/2007 |
| 7259216 | Method for producing highly branched ethylene polymers A process for preparing highly branched ethylene polymers comprises polymerizing ethylene over a catalyst system comprising a compound of the formula Ia or Ib and an activator, where the process is carried out at... | 08/21/2007 |
| 7253292 | Synthesis of cyclopentadiene derivatives A process for preparing cyclopentadiene derivatives comprising the steps of: a) coupling a five membered heterocycle ring with a five or six membered heterocycle ring; b) reacting the obtained compound with a carbonilating system: c) reducing the obtained compound. | 08/07/2007 |
| 7247686 | Solid cocatalyst component for olefin polymerization and catalyst system thereof 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 hy... | 07/24/2007 |
