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7615597 |
Process for the copolymerization of ethylene
A process for producing a polymer of ethylene containing from 0.1 to 99% by mol of one or more derived units of alpha-olefins and optionally from 0 to 5% by mol polyene, comprising contacting...
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7592498 |
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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7563848 |
Crosslinked polycyclooctene
Chemically crosslinked polycyclooctene having excellent shape recovery properties and a method for its synthesis via ring-opening metathesis polymerization of cyclooctene using the...
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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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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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7524911 |
Adhesive and marking compositions made from interpolymers of ethylene/α-olefins
An adhesive composition comprises: (i) at least one ethylene/α-olefin interpolymer, (ii) at least one tackifier; and (iii) optionally at least one additive, such as a plasticizer, wax and...
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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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7465773 |
Polymerizable composition and formed article using the same
A polymerizable composition which comprises a cycloolefin monomer (A), a filler (B), a polymer (C) having a carboxyl group or a carboxylic acid anhydride group and having an acid value of 0.1 to...
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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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7439314 |
Catalysts for olefin polymerization
Transition metal complexes of selected monoanionic phosphine ligands, which also contain a selected Group 15 or 16 (IUPAC) element and which are coordinated to a Group 3 to 11 (IUPAC) transition...
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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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7425599 |
Polyvinyl ethers having silicon-containing functional groups or atomic groups at the end and process for production thereof
Disclosed is a technology for the production of polyvinyl ethers having a reactive silicon-containing functional or atomic group at the terminal thereof. The polyvinyl ether as expressed by the...
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7402646 |
Polymerization of diisopropenylbenzene
Processes for preparing substantially linear polymers from diisopropenylbenzenes are provided. The polymers are useful in making a variety of products, including coatings, pigment dispersing...
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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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7381781 |
Process for the preparation of low molecular weight hydrogenated nitrile rubber
The present invention relates to a process for the production of hydrogenated nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in...
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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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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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7345129 |
Polymerisation catalysts
A catalyst for the polymerisation of 1-olefins is disclosed, which comprises (1) a compound of Formula B wherein M is Fe[II], Fe[III], Co[I], Co[II], Co[III], Mn[I], Mn[II], Mn[III], Mn[IV],...
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7339006 |
Metathesis-active adhesion agents and methods for enhancing polymer adhesion to surfaces
The invention discloses an adhesion agent composition comprising at least one C 3 -C 200 olefin compound having at least one metathesis active double bond, wherein the olefin is substituted or...
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7332609 |
PEG-substituted pyridine ligands and related water-soluble catalysts
Amphiphilic Group VIII metathesis catalysts, as can be used in a range of polymerization reactions and other chemical methodologies.
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7329758 |
Imidazolidine-based metal carbene metathesis catalysts
The present invention relates to novel metathesis catalysts with an imidazolidine-based ligand and to methods for making and using the same. The inventive catalysts are of the formula
wherein:
...
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7312285 |
Method for preparing norbornene based addition polymer containing ester or acetyl functional group
The present invention relates to a method for preparing a cyclic olefin polymer by addition polymerization, and more particularly to a method for preparing a norbornene-based addition polymer,...
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7309805 |
Method and system to contact an ionic liquid catalyst with oxygen to improve a chemical reaction
In an embodiment, a method is disclosed to increase the activity of an ionic liquid catalyst comprising contacting an ionic liquid catalyst with oxygen. In another embodiment, a method is disclosed...
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7297747 |
Polymerization process and polymer composition
Olefin polymerization processes using catalyst systems based on metallocenes and olefin, in particular, propylene polymers obtainable thereby. The metallocenes may be represented by the formula:
...
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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...
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7285598 |
Polymer and process for producing the same
A polymer consisting mainly of structural units represented by the general formula (1), wherein the total molar amount of terminal aldehyde groups and acetal groups is 0.6 mol % or smaller based on...
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7285593 |
Polyolefin compositions optionally having variable toughness and/or hardness
The present invention provides novel polyolefin compositions having variable hardness and/or toughness properties. The polyolefin compositions include: a polyolefin prepared by the metathesis of an...
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7276616 |
Phosphorous containing ligands for metathesis catalysts
The use of a phosphorus containing Ligand as a Ligand for a metathesis catalyst in a catalysed metathesis reaction wherein the phosphorus containing Ligand is a heterocyclic organic compound with a...
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7276574 |
Process for producing vinyl polymer
The present invention provides a method for producing a vinyl polymer including the steps of polymerizing a vinyl monomer by atom transfer radical polymerization with a transition metal complex as...
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7271231 |
Polymerization of olefins
Disclosed herein are processes for polymerizing ethylene, acyclic olefins, and/or selected cyclic olefins, and optionally selected olefinic esters or carboxylic acids, and other monomers. The...
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7268196 |
Process for producing cycloolefin addition polymer
A process for producing a cycloolefin addition polymer in which one or more cycloolefin monomers can be (co)polymerized by addition polymerization with a small palladium catalyst amount to produce...
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7262244 |
Polymer composites comprising low molecular weight nitrile rubber
The present invention relates to polymer composites comprising at least one, optionally hydrogenated, nitrile rubber polymer having a Mooney viscosity (ML 1+4 @ 100° C.) below 30 at least one...
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7259214 |
Metal catalyst for olefin polymerization and co-polymerization with functional monomers
A catalyst is disclosed for the polymerization and co-polymerization of olefins with functionalized monomers. The catalyst is formed from a combination of two neutral metal complexes, L( i Pr 2...
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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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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 ...
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7235601 |
Hydrogenated nitrile rubber compositions with improved processability
The present invention relates to polymer composites containing at least one, optionally hydrogenated, nitrile rubber polymer having a Mooney viscosity (ML 1+4 @ 100° C.) in the range of from...
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7179871 |
Non-symmetrical ligands and catalyst systems thereof for ethylene oligomerization to linear alpha olefins
Non-symmetrical ligands of formula (I);
bis-aryliminepyridine MX n complexes comprising a non-symmetrical ligand of formula (I), wherein M is a metal selected from Fe or Co, n is 2 or 3, and X...
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7176266 |
Catalyst for vinyl compound polymerization and process for producing vinyl polymer
A catalyst for polymerizing vinyl compounds or α-olefins according to the present invention includes (A) a transition metal complex, (B) a clay, clay mineral or ion-exchangeable layered compound,...
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7173097 |
Metathesis-curable composition with a reaction control agent
A composition curable by a metathesis reaction upon mixing its components and comprising an olefin-containing substrate, a metathesis catalyst, and a reaction control agent for slowing the progress...
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7172986 |
Catalytic composition and its preparation and use for preparing polymers from ethylenically unsaturated monomers
A catalytic composition, including a cationic metal-pair complex, is disclosed, along with a method for its preparation. A method for the polymerization of ethylenically unsaturated monomers using...
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7172755 |
Methods for making functionalized polymers
Polymers containing amino acid and/or polypeptide moieties in their backbones or pendant to their backbones are made by metathesis. A method of making an amino acid or polypeptide containing...
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7169863 |
Salts of lewis acid/acid adducts and catalyst activators therefrom
A compound useful as a cocatalyst or cocatalyst component, especially for use as an addition polymerization catalyst compound, corresponding to the formula: (A* +a ) b (Z*J* j ) −c d , wherein:
...
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7153916 |
Transition metal compound, catalyst for polymerization of olefin, and process for polymerization of ofelin using the catalyst
Catalyst for polymerization of an olefin is provided, which comprises (A) a transition metal compound having a carbon-metal bond structure and (B) an activating co-catalyst, or (A) a transition...
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7132491 |
Chain transfer reagent, free radical polymerization employing the same and resulting polymers
Organometallic reversible addition-fragmentation chain transfer reagents (RAFT reagents), processes of free radical polymerization employing the same and polymers with low polydispersity index...
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7129304 |
Dimine metal complexes, methods of synthesis, and methods of using in oligomerization and polymerization
Processes to polymerize or oligomerize olefins by contacting olefins with α-diimine metal complexes. In particular, alpha olefins can be produced in high selectivity by contacting ethylene with...
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7115688 |
Nanoparticles with polymer shells
The invention provides a method of preparing nanoparticles having at least one polymer shell attached to them, each polymer shell having a selected property or properties. The method comprises...
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7112638 |
Hetero cyclic metallocene compounds and use thereof in catalyst system for producing olefin polymers
A metallocene compound of general formula (I): LGZMXp, wherein L is a divalent group, Z is a moiety of formula (II), wherein R 3 and R 4 are selected from hydrogen and hydrocarbon groups; A and B...
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7105617 |
Metal 8-hydroxyquinoline-functionalized polymers and related materials and methods of making and using the same
This invention relates to the synthesis of Mq n -containing monomeric compounds, comprising a polymerizable moiety, an Mq n -moiety, and an optional chemical spacer therebetween, wherein q, in each...
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7102047 |
High metathesis activity ruthenium and osmium metal carbene complexes
Ruthenium and osmium carbene compounds that are stable in the presence of a variety of functional groups and can be used to catalyze olefin metathesis reactions on unstrained cyclic and acyclic...
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7098355 |
Process for synthesis of organometallic compounds
A method for synthesizing an organometallic compound, which is usefully utilized as a catalyst for manufacturing polyolefins by ring-opening metathesis polymerization of an olefin having strain in...
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