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7582585 |
Coating compositions
Coating compositions are provided that include a component that is a product of materials comprising an amine and an anhydride and/or an anhydride derivative. Compositions of the invention are...
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7579295 |
Catalytic hydrogenation processes
Catalysts of formula
[Ru(L) m (L′) w XY] (II)
wherein X and Y represent...
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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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7557057 |
Method for preparation of highly dispersed supported platinum catalyst
The present invention relates to a method for synthesizing highly dispersed supported platinum catalyst. More particularly, the present invention relates to a method of synthesizing highly...
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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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7501373 |
Polymerization catalyst for polyester production, polyester, and process for producing polyester
Embodiments of the present invention are directed to a polymerization catalyst used to produce polyester. The catalyst comprises at least one metal-containing component, excluding antimony or...
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7456127 |
Organoaluminum catalyst
An organoaluminum reaction product of A.) a ligand of the formula I, wherein R 1 represents an alkyl, aryl, arylalkyl, or alkylaryl group, a C 3-24 silyl group, or hydrogen, R 2 , R 3 , R 4 , R 5...
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7429684 |
Process for oligomerization of ethylene to linear α-olefins
A process for preparing α-olefins from ethylene wherein the α-olefins are substantially free of olefins having greater than 12 carbon atoms comprises contacting ethylene under oligomerization...
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7429549 |
Process for improved coupling of rubbery polymers
Rubbery polymers made by anionic polymerization can be coupled with tin halides or silicon halides to improve the characteristics of the rubber for use in some applications, such as fire treads. In...
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7425520 |
Catalyst for selective hydrogenation of nitro groups of halonitro aromatic compounds
A supported catalyst for hydrogenating nitro groups of halonitro compounds manufactured from a support, a solvent, and one or more types of organometallic complexes. The organometallic complexes...
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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...
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7399822 |
Isotactic specific catalyst for direct production of highly isotactic poly (propylene oxide) or highly isotactic poly (butylene oxide)
(Salph or methoxy salph) Co (initiating ligand) catalyze homopolymerizing rac-PO to produce pure highly isotactic PPO and rac-1-butylene oxide to produce pure isotactic poly(butylene oxide). A...
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7358209 |
Polymerisation catalysts
A transition metal complex having the following Formula (A): wherein the monovalent groups R 1 and R 2 are —R a , —OR b , —NR c R d , and —NHR e : the monovalent groups R a , R b , R c ,...
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7321037 |
Photosensitizer dye
A photosensitizer dye is provided. The photosensitizer dye contains a Ru complex represented by the following formula (1):
wherein Y 1 and Y 2 independently represent hydrogen atom (H),...
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7314844 |
Process for the cyanation aldehydes
A process for cyanating an aldehyde is provided. The process comprises reacting the aldehyde with:
i) a cyanide source which does not comprise a Si—CN bond or a C—(C═O)—CN moiety; and ii)...
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7288500 |
Selective hydrogenation of nitro groups of halonitro aromatic compounds
A supported catalyst for hydrogenating nitro groups of halonitro compounds manufactured from a support, a solvent, and a plurality of organometallic complexes. The organometallic complexes have the...
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7279537 |
Transition metal complexes and polymerization catalysts
There are provided a transition metal complex of formula (1):
wherein M represents an element of Group 6 of Periodic Table of Elements, A and A′ are the same or different, and represent a...
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7276463 |
Polymerization catalyst for α-olefins and process for production of α-olefin polymers therewith
A catalyst having a high catalyst activity, which enables the production of an α-olefin polymer improved in stereoregularity by decreasing an amorphous component, and a production method for the...
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7268250 |
Process for producing optically active compound
A highly efficient process is provided for producing an optically active compound having high optical purity by an asymmetric reaction using as a catalyst a transition metal complex having an...
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7247687 |
Late transition metal catalysts for olefin polymerization and oligomerization
This invention relates to a transition metal compound represented by the formula LMX wherein M is a Group 3 to 11 metal L is a bulky bidentate or tridentate neutral ligand that is bonded to M by...
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7241715 |
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...
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7211534 |
Preparation of a magnesium halide support for olefin polymerization and a catalyst composition using the same
A magnesium halide support material for a polyolefin catalysts is disclosed. The magnesium halide of present invention is prepared by reacting magnesium with an alkylhalide in a non-polar...
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7208642 |
Process for preparation of formate esters or methanol and catalyst therefor
A production process and a catalyst are provided, which can be less decreased in activity of the catalyst even when CO 2 , water and the like are present in the starting material and/or the...
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7208437 |
Catalyst and method for its manufacture
A catalyst is synthesized by a method in which a catalytic metal such as platinum or another noble metal is dispersed onto a support member. A transition metal macrocycle is also adsorbed onto the...
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7196032 |
Fluoroalcohol leaving group for non-metallocene olefin polymerization catalysts
A catalyst composition and method for olefin polymerization are provided. In one aspect, the catalyst composition is represented by the formula α a β b γ g MX n wherein M is a metal; X is a...
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7169875 |
Organometallic compositions
A composition suitable for use as a catalyst for the reaction of an isocyanate compound or prepolymer thereof with an alcohol to form a polyurethane comprises a mixture of (a)an organometallic...
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7135428 |
Catalyst solution for implementing anionic lactam polymerization, method for production thereof and polyamide moulding compound
A catalyst solution for the anionic polymerization of lactones and/or lactams comprises a salt of at least one compound of the general formula I
In this formula (I), R 1 is H or an aliphatic,...
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7115770 |
Use of tin derivatives as catalysts
The invention concerns the use as catalyst for transforming carbamates of compounds corresponding to the general formula (I): —Sn (X) (X′) wherein: X′ is selected among chloride, bromide,...
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7115539 |
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 M 1 L 1 r , a compound represented by the formula R 1 s−1 TH,...
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7091151 |
Catalytic system for aldol reactions
The invention relates to a catalytic system for use in a process for the preparation, in a single step, of enones by an aldol condensation of a ketone, such as a gem-dimethyl cyclohexylethanone or...
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7087549 |
Calcium-based catalyst system
This invention reveals a catalyst system for use in isothermal polymerizations which consists essentially of (a) an organolithium compound, (b) a calcium alkoxide and (c) a lithium alkoxide. The...
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7081428 |
Carboxylate-containing photocatalytic body, manufacture and use thereof
Supported photooxidation catalysts containing a metal oxide or metal ion as catalyst which is fixed to the support by means of carboxylate moieties are an alternative to existing such catalysts,...
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7049265 |
Organic anion catalyst system for foams
Disclosed herein are compositions useful for introducing metal carboxylate salts as catalysts into systems useful for producing polyurethane and polyisocyanurate foams. The methods permit the...
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6995110 |
Complex catalyst, process for producing the complex catalyst, and process for producing alcohol derivative with the complex catalyst
There are provided (asymmetric) complex catalysts comprising metal complexes and Lewis acids as components, the metal complex being of formula (1):
wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R...
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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...
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6982238 |
Supported catalyst
The invention provides a supported chromium catalyst system comprising a chromium catalyst precursor bound via at least one heteroatom to a functionalised support, said heteroatom being connected...
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6962891 |
Solid support dirhodium catalyst compositions and methods for making and using same
Disclosed are dirhodium catalyst compositions. One such dirhodium catalyst composition includes a dirhodium catalyst and a solid support. The dirhodium catalyst includes a Rh—Rh moiety and four...
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6903042 |
Catalytic composition and process for oligomerizing ethylene, in particular to 1-hexene
A catalytic composition for oligomerizing ethylene, in particular to 1-hexene, is obtained by mixing at least one chromium carboxylate characterized in that it also contains a free carboxylic acid...
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6861386 |
Accelerator for metathesis catalyst
A polymerizable composition including a resin system comprising oligomers or polymers functionalized with groups curable by ring opening metathesis polymerization, a metathesis catalyst, and a...
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6852664 |
Double metal cyanide catalysts for the preparation of polyether polyols
The present invention relates to novel double metal cyanide (DMC) catalysts for the preparation of polyether polyols by a polyaddition reaction between alkylene oxides and starter compounds having...
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6852662 |
Catalyst systems based on transition metal complexes for carbon monoxide copolymerization in an aqueous medium
Catalyst systems for the copolymerization of carbon monoxide and α-olefinically unsaturated compounds contain, as essential components,
a) a metal complex of the formula (I)
where R 1 ...
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6828269 |
Catalytic composition and a process for oligomerizing ethylene, in particular to 1-hexene
A catalytic composition is obtained by mixing at least one chromium compound with at least one aryloxy compound of an element M selected from the group formed by magnesium, calcium, strontium and...
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6825294 |
Catalysts for polymerizing styrene and other monomer and process for producing styrene polymer
Provided are catalysts for styrene polymerization capable of efficiently and inexpensively producing styrenic polymers having a syndiotactic structure; and a method for producing styrenic polymers....
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6825148 |
Nickel-containing ethylene oligomerization catalyst and use thereof
A process for the oligomerization of ethylene to a mixture of olefinic products having high linearity is provided, by using a catalyst comprising a reaction product of a simple divalent nickel...
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6825149 |
Highly selective shell impregnated catalyst of improved space time yield for production of vinyl acetate
A shell impregnated catalyst of Pd-Au produced on a silica support to have a Pd loading of 1.8 g/L of catalyst to about 7.2 g/L and a Au to Pd weight ratio of 0.3 to 2.0 by impregnating the support...
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6809059 |
Catalyst
A catalyst and method for performing a Michael addition reaction between a β-dicarbonyl compound with a cyclic or acyclic enone, where the catalyst comprises a substituted or unsubstituted...
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6809211 |
Catalysts for polymerization of alkylene oxides
The present invention provides new coordinative catalysts for the polymerization of alkylene oxides.
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6794525 |
Optically active chiral diphosphine ligands
An (R) or (S) chiral diphosphine of formula (I): wherein R and R1, which can be identical or different, represent an optionally saturated C 1-10 alkyl group, an optionally saturated C 3-9 ...
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6784302 |
Method of producing optically active lactone compound and complex used in the method
An optically active lactone compound is produced by using a Zr(salen) complex of the following formula (I) or its enantiomer as a catalyst and subjecting a cyclic ketone compound to a...
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6780949 |
Olefin polymerization process
Olefin polymerizations employing a complex of a Group 8, 9, or 10 transition metal with a bidentate ligand as part of the polymerization catalyst system are improved by adding to the polymerization...
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