|
Match
|
Document |
Document Title |
|
|
7601666 |
Olefin polymerization catalyst system and process for use thereof
A compound represented by the formula:
where:
M is a transition metal selected from group 4 of the periodic table; each R 1 is independently selected from the group consisting of...
|
|
|
7595413 |
Phosphine-substituted vinyl containing metallocene catalyst, preparation process and the application of the same
The invention relates to a phosphine-substituted vinyl containing metallocene catalyst, and also to the preparation process of the same as well as to the application of the catalyst. The catalyst...
|
|
|
7566679 |
Cocatalyst for the production of linear alpha-olefins
The invention relates to a homogeneous catalyst for the production of linear alpha-olefins by oligomerisation of ethylene, consisting of a zirconium salt of organic acids and a cocatalyst which...
|
|
|
7560577 |
Catalyst for production of ethylene oxide and method for production of ethylene oxide
A catalyst that enables to produce ethylene oxide in a high selectivity and a method for the production of ethylene oxide using the catalyst are provided. In the catalyst for the production of...
|
|
|
RE40751 |
Polymerization catalyst systems comprising substituted hafnocenes
The present invention relates to a process for the polymerization of monomers utilizing a bulky ligand hafnium transition metal metallocene-type catalyst compound, to the catalyst compound itself...
|
|
|
7538060 |
Palladium-copper chromite hydrogenation catalysts
Disclosed are catalysts comprising copper chromite, palladium and lanthanum having hydrogenation activity. The combination of copper chromite with palladium and lanthanum enhances catalyst activity...
|
|
|
7518023 |
Highly active spherical metal support catalysts
The invention relates to highly active spherical metal support catalysts with a metal content of 10 to 70% by mass, and a process for their production with the use of a mixture of polysaccharides...
|
|
|
7498289 |
Ni catalysts and methods for alkane dehydrogenation
Catalysts and methods for alkane oxydehydrogenation are disclosed. The catalysts of the invention generally comprise (i) nickel or a nickel-containing compound and (ii) at least one or more of...
|
|
|
7485765 |
Process for obtaining a butadiene homopolymer in the presence of monoolefin(s) with 4 carbon atoms
A process is described for obtaining a 1,3-butadiene homopolymer by the reaction of a catalytic system in the presence of 1,3-butadiene and one or more monoolefin(s) with 4 carbon atoms. This...
|
|
|
7470758 |
Polymerization catalysts for producing polymers with low levels of long chain branching
This invention relates to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene with bridging η 5 -cyclopentadienyl-type ligands, in combination with a cocatalyst and an...
|
|
|
7468416 |
Catalyst composition for olefin polymerization
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...
|
|
|
7446073 |
Catalyst compounds, catalyst systems thereof and their use in a polymerization process
The present invention relates to a cyclic germanium bridged bulky ligand metallocene-type catalyst compound, a catalyst system thereof, and to its use in a process for polymerizing olefin(s) to...
|
|
|
7439378 |
Fulvene, metallocene catalysts and preparation method thereof, and preparation of polyolefines copolymer using the same
The present invention relates to a novel fulvene compound and a preparation method thereof, and more particularly to a fulvene compound having substituted groups in the 2- and 5-positions, prepared...
|
|
|
7432336 |
Catalysts for propylene copolymers
The present invention relates to propylene based copolymers and to processes for producing propylene based copolymers, particularly propylene-ethylene copolymers. These unique copolymers are...
|
|
|
7432220 |
Method for the preparation of olefin polymerization catalyst support and an olefin polymerization catalyst
The invention is directed to a process for producing a particulate support for an olefin polymerisation catalyst wherein a solution of a magnesium compound is contacted with a solution of an...
|
|
|
7429635 |
Preparation of ultra high molecular weight linear low density polyethylene
Disclosed is a method of preparing an ultra-high molecular weight, linear low density polyethylene with a catalyst system that comprises a bridged indenoindolyl transition metal complex, a...
|
|
|
7417097 |
Organometal compound catalyst
This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for...
|
|
|
7417006 |
Catalyst system for the polymerization of olefins
A salt of formula (I)
[HE o R 1 3 ] + [T 1 T 2 ] − (I)
wherein E o is a...
|
|
|
7414099 |
Hindered polyalicyclic alkyl catalysts and their use in a gas-phase polymerization reactor
Embodiments of the present invention include a method of polymerizing olefins comprising contacting olefins with a catalyst composition made by the process of combining a hindered polyalicyclic...
|
|
|
7410927 |
Catalysts for olefin polymerization
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...
|
|
|
7410925 |
Metal compound, and catalyst component and catalyst for addition polymerization, and process for producing addition polymer
A metal compound obtained by a process comprising the step of contacting, in a specific ratio, a compound represented by the formula BiL 1 r , a compound represented by the formula R 1 s-1 TH, and...
|
|
|
7402546 |
Magnesium chloride support
The invention relates to supports comprising inorganic oxide particles coated with magnesium chloride and a method for making them. The inorganic oxide has a mean particle diameter of less than 5...
|
|
|
7393965 |
Crosslinked metallocene compound for olefin polymerization and method of polymerizing olefin with the same
The bridged metallocene compound or the olefin polymerization catalyst which comprises the compound, enables high polymerization activity in polymerizing one or more monomers selected from ethylene...
|
|
|
7390861 |
Cationic group-3 catalyst system
A cationic Group 3 or Lanthanide metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by an anionic multidentate ancillary ligand and two...
|
|
|
7390764 |
Organometal catalyst compositions
This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer This invention also provides catalyst compositions that are useful for...
|
|
|
7384886 |
Methods of preparation of an olefin oligomerization catalyst
A method of making a catalyst for use in oligomerizing an olefin comprising a chromium-containing compound, a pyrrole-containing compound, a metal alkyl, a halide-containing compound, and...
|
|
|
7384884 |
Catalyst preparation method
This invention relates to a method to prepare a supported catalyst system comprising preparing a combination comprising 1) a first supported catalyst system comprising a support, an activator and a...
|
|
|
7368516 |
Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst
A catalyst used for trimerization of ethylene into 1-hexene is descrobed, which comprises (i) a specific organometallic complex having a neutral multidentate ligand having a tripod structure, (ii)...
|
|
|
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...
|
|
|
RE40234 |
Process for producing crystalline poly-α-olefins with a monocyclopentadienyl transition metal catalyst system
The invention is a catalytic process using a Group IV B transition metal component and an alumoxane component to polymerize α-olefins to produce high crystallinity and high molecular weight...
|
|
|
7351678 |
Catalyst systems for Ziegler-Natta propene polymerisation
The invention relates to the use of nitrogenous aluminium organyl complexes of general formula (I) as co-catalysts in heterogeneous polymerisation reactions of propene. In said formula: R, R′, R...
|
|
|
7341971 |
Production of olefin polymerization catalysts
The invention provides a process for producing an olefin polymerization catalyst, comprising an organometallic compound of a transition metal or of an actinide or lanthanide, in the form of solid...
|
|
|
RE40121 |
Transition metal compound
The present invention relates to zwitterionic neutral transition metal compounds. The compounds are suitable as catalyst components for the polymerization of olefins.
|
|
|
7323526 |
Supported metallocene-alkyl catalyst composition
A supported catalyst composition having improved flow properties is disclosed comprising an alkylalumoxane, a metallocene-alkyl an inorganic oxide support having an average particle size of from...
|
|
|
7307035 |
Magnesium dichloride-alcohol adducts and catalyst components obtained therefrom
The present invention relates to an adduct comprising M g Cl 2 , an alcohol (ROH) in which R is a C1-C10 hydrocarbon group, and a compound containing a transition metal M selected from the Groups 3...
|
|
|
7297806 |
Manufacture of alpha-olefins
Alpha-olefin are manufactured in high yield and with very high selectivity by contacting ethylene with an iron complex of a selected 2,6-pyridinedicarboxaldehyde bisimine or a selected...
|
|
|
7294679 |
Catalyst support method and polymerization with supported catalysts
This invention relates to a method to support one or more catalyst compounds comprising contacting the catalyst compounds with a pretreatment agent comprising an aluminum alkyl and or an alumoxane...
|
|
|
7288611 |
Methods for preparing a rare-earth cis-1,4-polybutadiene rubber with a controlled molecular weight distribution
Disclosed herein are a method for preparing a cis-1,4-polybutadiene with a controlled molecular weight distribution, comprising polymerizing butadiene monomers using a rare-earth catalyst system...
|
|
|
7279536 |
Polymer production at supercritical conditions
Process to polymerize olefins comprising contacting, in a polymerization system, olefins having three or more carbon atoms with a catalyst compound, activator, optionally comonomer, and optionally...
|
|
|
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, R 1 is a radical of the formula NR 5 R 6 , R 2 is...
|
|
|
7271126 |
Catalyst for the dehydrogenation of ethyl benzene to STYRENE prepared with a high purity iron precursor
A method for producing a catalyst for use in the dehydrogenation of ethylbenzene to styrene is disclosed. The catalyst of the present invention comprises a high purity metal and at least one...
|
|
|
7271124 |
Process to produce polymers
A process to produce ethylene polymers is provided.
|
|
|
7268095 |
Transition metal catalysts for (co) polymerizing of olefinic monomers
A compound of the formula Ia or Ib;
where, in the formula Ia, E 1 is O, S, Se, Te, NR, CR 2 , or PR; E 2 , E 3 are each CR, N, or P; E 4 is N, or P; E 5 is OH, SH, NHR, OR′, SR′,...
|
|
|
7259123 |
Catalytic trimerization and tetramerization of olefinic monomers
A catalyst precursor composition comprising a) a source of chromium, molybdenum or tungsten; b) a first ligand having the general formula (I);
|
|
|
7250478 |
Silicon containing cyclopentadienyl ring for metallocene catalyst components
The present invention refers to a metallocene catalyst component for producing polyolefins according to formula (I) R″ s (CpR n ) g (CpR n ) M Q 3-g (I) or according to formula (II) R″(CpR n...
|
|
|
7247595 |
Supported metallocene catalyst and olefin polymerization using the same
A metallocene compound represented by the following Chemical Formula 1:
wherein M is a transition metal of Group 4; Cp denotes a cyclopentadienyl ring unsubstituted or substituted by...
|
|
|
7241903 |
Metallocenes, use in catalyst system for producing olefin polymers
A metallocene compound of formula (I): wherein M is zirconium, titanium and hafnium; X is a hydrogen atom, a halogen atom or a hydrocarbon radical; R 1 is a linear C 1 -C 20 -alkyl radical; R 2 ...
|
|
|
7238818 |
Heterocyclic metallocenes and polymerization catalysts
A new class of heterocyclic metallocenes, a catalytic system containing them and a process for polymerizing addition polymerizable monomers using said catalytic system are disclosed; the...
|
|
|
7235510 |
Catalysts
A tethered ligand comprising the reaction product of an organofunctional silica and a ligand containing a functional group capable of reaction with said organofunctional silica, wherein the...
|
|
|
7230128 |
Organometallic fluorenyl compounds, preparations, and use
Fluorenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition,...
|