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7618912 |
Preparation of supported catalyst systems
The present invention relates to a process for preparing a catalyst solid for olefin polymerization which is obtainable by bringing
A) at least one organic transition metal compound, B) at least...
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7612245 |
Method for selective hydrogenation of polyunsaturated compounds into monounsaturated compounds using a homogeneous catalyst
A process for the selective hydrogenation of diolefinic compounds to mono-olefinic compounds uses a catalyst composition comprising at least one salt of a transition metal from groups IB, IIB, VB,...
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7612241 |
Hydroformylation process
A process for the production of 4-hydroxybutyraldehyde is described. The process comprises reacting allyl alcohol with a mixture of carbon monoxide and hydrogen in the presence of a solvent and a...
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7612009 |
Process for homo-or copolymerization of conjugated olefines
Metal complexes, catalyst compositions containing the metal complexes, and processes for making the metal complexes and the catalyst compositions are described for the manufacture of polymers from...
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7612008 |
Metathesis catalysts
The invention relates to polymeric transition metal catalysts, to processes for preparing them, to intermediates and also to the use of the transition metal catalysts as catalysts in organic...
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7601867 |
Sulphonylated diphenylethylenediamines, method for their preparation and use in transfer hydrogenation catalysis
A diamine of formula (I) is described, in which A is hydrogen or a saturated or unsaturated C1-C20 alkyl group or an aryl group; B is a substituted or unsubstituted C1-C20 alkyl, cycloalkyl,...
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7598330 |
Cross-metathesis of olefins directly substituted with an electron-withdrawing group using transition metal carbene catalysts
The invention pertains to the use of Group 8 transition metal alkylidene complexes as catalysts for olefin cross-metathesis reactions. In particular, ruthenium and osmium alkylidene complexes...
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7598328 |
Supported catalysts for manufacture of polymers
A supported catalyst composition and process for preparing high molecular weight polymers of one or more addition polymerizable monomers, especially propylene, said composition comprising:
...
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7598200 |
Ionic liquids for heterogenising metallocene catalysts
The present invention discloses a method for preparing an heterogeniseded catalyst component comprising the steps of: a) providing a halogenated precursor component of formula (I) —X—[—CH 2...
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7597872 |
Process for treating a gas containing hydrogen sulphide and sulphur dioxide
A process for treating a gas containing hydrogen sulphide (H 2 S) and sulphur dioxide, contacting the gas
at a suitable temperature with an organic solvent containing at least a soluble...
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7591942 |
Bulk bi-metallic catalysts made from precursors containing an organic agent
Bulk bi-metallic catalysts for use in the hydroprocessing of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor containing an...
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7579294 |
Synthesis of supported transition metal catalysts
A highly active and recyclable supported transition metal catalyst can be prepared by a simple process comprising mixing with heating a transition metal complex, a metal-chelating agent and an...
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7563741 |
Silicone composition which can be crosslinked into an elastomer by hydrosilylation in the presence of carbene-based metal catalysts, and catalysts of this type
This invention relates to silicone compositions which can be crosslinked, preferably into elastomers, by hydrosilylation of at least one PolyOrganoSiloxane -A- carrying unsaturated bonds, using at...
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7557058 |
Catalyst composition and method for chlorinating aromatic compounds
The present invention provides a catalyst composition prepared by combining (A) at least one salt and (B) at least one organic sulfur compound. The salt includes a metal cation of a metal selected...
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7550543 |
Polymer-based composites comprising carbon nanotubes as a filler, method for producing said composites, and associated uses
The invention relates to a method for producing carbon nanotubes in a dispersed state. The method comprises a stage whereby polymerization is carried out from at least one so-called monomer of...
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7550406 |
Phosphorus-containing catalyst composition and hydroformylation process using the same
Provided are a catalyst composition comprising a bidentate ligand, a monodentate ligand, and a transition metal catalyst and a process of hydroformylation of olefins, comprising reacting the olefin...
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7547783 |
Transition metal complexes
A transition metal complex which is a bis-arylimine pyridine MX n complex or a [bis-arylimine pyridine MXp+][NC−]q complex comprising a bis-arylimine pyridine ligand and M is a transition metal...
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7547751 |
Process for the preparation of a polyolefin
The invention related to a process for the polymerization of at least one aliphatic C 2-20 or aromatic C 4-20 hydrocarbyl mono- or multiolefin in the presence of a catalyst and an aluminum...
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7541413 |
Olefin polymerization catalysts, their synthesis and use
A catalyst system for the polymerization or copolymerization of α-olefins comprises a bis(imino)pyridyl complex of a transition metal on a support having an aluminum halide and/or an alkylaluminum...
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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 CH 2 ═CHZ derived units, wherein Z is a C 3 -C 20 hydrocarbon group, having the...
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7531602 |
Polymer blends
A blend of polymers comprising from 5 to 95 weight % of a polymer having a high molecular weight made using a single site type catalyst and from 95 to 5 weight % of a polymer having a lower...
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7524906 |
Process for the preparation of a metal-organic compound comprising at least one imine ligand
The invention relates to a process for the preparation of a metal-organic compound, comprising at least one imine ligand, characterized in that an imine ligand according to formula 1, or the HA...
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7524905 |
Substantially linear copolymers and methods of making the same
Substantially linear copolymers derived from at least one acyclic aliphatic olefin monomer and at least one nitrogen containing vinyl monomer, wherein the at least one nitrogen containing vinyl...
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7511110 |
Crosslinkable polyorganosiloxane compositions
Polyorganosiloxane compositions crosslinkable by addition of Si-bonded hydrogen to aliphatic carbon-carbon multiple bonds which have extended pot life or are preparable as storage stable one...
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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...
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7479531 |
Olefin polymerization catalyst system useful for polar monomers
This invention relates to copolymers produced by a polymerization method comprising contacting at least one olefin monomer, at least one polar monomer, an optional activator, and a catalyst...
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7473792 |
Process for transition metal-catalyzed asymmetric hydrogenation of acrylic acid derivatives, and a novel catalyst system for asymmetric transition metal catalysis
A process for transition metal-catalyzed, asymmetric hydrogenation of acrylic acid derivatives of the formula (I) in which R1 is H or an optionally substituted alkyl, aryl or heteroaryl radical, R2...
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7470760 |
Diene elastomers with cyclic vinyl units and processes for obtaining same
The present invention relates to a linear or branched diene elastomer having cyclic vinyl units. A linear diene elastomer according to the invention results from at least one conjugated diene and...
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7465818 |
Process for the racemoselective synthesis of ansa-metallocenes
A process for the racemoselective preparation of ansa-metallocene complexes of the formula (I),
where
R 1 , R 1′ , R 2 , R 2′ are identical or different and are each hydrogen or an...
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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...
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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
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7442819 |
Catalysts for olefin polymerization or oligomerization
Novel iron and cobalt complexes of certain novel tricyclic ligands containing a “pyridine” ring and substituted with two imino groups are polymerization and/or oligomerization catalysts for...
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7442750 |
Supported olefin polymerization catalyst
Supported catalyst systems are provided comprising (a) a transition metal compound, (b) an activator comprising (iii) an aluminoxane or (iv) a Group lilA metal or metalloid compound, and (c) a...
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7439205 |
Tridentate metal catalyst for olefin polymerization
In accordance with the present invention, there is provided a transition metal olefin polymerization catalyst component characterized by the formula:
where, M is a Group IV or a Group IV...
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7429548 |
Soluble late transition metal catalysts for olefin oligomerizations III
A This invention relates to a composition comprising a catecholate ligand, palladium or nickel, and an ancillary ligand with the following structure:
where Pn is a Group-15 element; H is...
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7423101 |
Catalyst composition and use thereof
The present invention is directed toward Group 4, 5, 6, 7, 8, 9, 10 or 11 transition metal compounds containing neutral, mono- or di-anionic tridentate nitrogen/oxygen based ligands that are...
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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...
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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...
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7410926 |
Polymerization process using a supported, treated catalyst system
The present invention relates to a supported, treated catalyst system and its use in a process for polymerizing olefin(s). More particularly, it provides a supported, treated catalyst system...
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7405262 |
Preparation of functionalized anionic polymerization initiators
A process for preparing a functionalized polymerization initiator, the process comprising combining a functionalized styryl compound and an organolithium compound.
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7399874 |
Catalyst compound containing divalent tridentate ligand
This invention relates to a catalyst compound represented by the formula:
wherein:
M is a Group 3 to 12 transition metal; each R a is, independently, a hydrogen, a hydrocarbyl group, a...
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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...
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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...
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7381679 |
Catalyst combination, isotactic polymers and also a method for producing linear isotactic polymers and the use thereof
The present invention relates to a catalyst combination for producing linear isotactic polymers containing an asymmetrical metal complex and also an activator.
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7378528 |
Alkylidene complexes of ruthenium containing N-heterocyclic carbene ligands; use as highly active, selective catalysts for olefin metathesis
The invention relates to a complex of ruthenium of the structural formula I,
where X 1 and X 2 are identical or different and are each an anionic ligand,
R 1 and R 2 are identical or...
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7371705 |
Phospha-adamantane(s) catalytic system
A catalyst system capable of catalysing the carbonylation of an olefinally unsaturated compound is described. The 5 catalyst system is obtainable by combining: (a) a metal of Group VIB or Group...
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7365140 |
Transition metal carbene complexes containing a cationic substituent as catalysts of olefin metathesis reactions
Organometallic complexes suitable as olefin metathesis catalysts are provided. The complexes are Group 8 transition metal carbenes bearing a cationic substituent and having the general structure...
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7361776 |
Zero-valent transition metal complex and method for producing an organometallic compound using the same as a starting material
The present invention relates to a zero-valent transition metal complex which can be used as a starting material for producing a catalyst usable for producing a polyolefin by ring-opening...
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7355073 |
Synthesis of diazaphosphacycles
A diazaphosphacycle may be synthesized by reacting a phosphine with a diimine and optionally one or more equivalents of an acid halide, a sulfonyl halide, a phosphoryl halide, or an acid anhydride...
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7355072 |
Diazaphosphacycle transition metal complexes
Transition metal complexes include a diazaphosphacycle of formula III and a transition metal. The phosphorus atom of the diazaphosphacycle is bonded to the transition metal and the...
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