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7166683 |
Process for polymerizing 1-butene and 1-butene polymers
A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH 2 ═CHT wherein T is a C 3 –C 10 alkyl group, in the presence of a...
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7163993 |
Electrical devices from polymer resins prepared with ionic catalysts
This invention relates to olefin polymers particularly suited to satisfying the dielectric properties required in electrical device use. The olefin polymers can be prepared by contacting...
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7157400 |
Titanium substituted pyridyl amine complexes, catalysts and processes for polymerizing ethylene and stryene
New compositions, titanium-ligand complexes and arrays with pyridyl-amine ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with titanium metal...
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7157398 |
Covalently fixed nonmetallocenes, process for preparing them and their use for the polymerization of olefins
The invention relates to a method for producing special transition metal compounds, to novel transition metal compounds and to the use thereof for polymerizing olefins.
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7157530 |
Catalyst system for controlled polymerization
Disclosed is a process for the removal and recycle of a supported transition metal catalyst complex from a polymerization reaction medium comprising the steps separating the supported transition...
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7153909 |
High density ethylene homopolymers and blend compositions
Blend compositions containing a novel homopolymer, the use of which allows the incorporation of more comonomer in the additional components of the blend (for the same overall density) resulting in...
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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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7148302 |
Catalyst for polymerization of norbornene
This invention is based upon the discovery that a catalyst system which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol is effective for polymerizing...
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7141690 |
Transition metal complexes, ligands, polymerization catalysts for olefins, and process for production of olefin polymers
A transition metal complex represented by the formula (1):
wherein M is a Group 4 transition metal, A is a Group 16 element, B is a Group 14 element, n is an integer of 0 or 1, R 1 , R 2 , R 3 ...
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7141633 |
Olefin trimerization using a catalyst comprising a source of chromium, molybdenum or tungsten and a ligand containing at least one phosphorous, arsenic or antimony atom bound to at least one (hetero) hydrocarbyl group
A process for the trimerization of olefins is disclosed, comprising contacting a monomeric olefin or mixture of olefins under trimerization conditions with a catalyst which comprises (a) a source...
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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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7129305 |
Heterocyclic-amide catalyst compositions for the polymerization of olefins
A family of novel hetrocyclic-amide type catalyst precursors useful for the polymerization of olefins, such as ethylene, higher alpha-olefins, dienes, and mixtures thereof.
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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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7125939 |
Olefin polymerization with polymer bound single-site catalysts
Disclosed is a process for polymerizing olefins. The process comprises polymerizing one or more olefins with a single-site catalyst in two or more polymerization stages. The catalyst comprises a...
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7122689 |
Titanium substituted pyridyl amine complexes, catalysts and processes for polymerizing ethylene and stryene
New compositions, titanium-ligand complexes and arrays with pyridyl-amine ligands are disclosed that catalyze the polymerization of monomers into polymers. These catalysts with titanium metal...
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7122611 |
Catalyst for polymerization of norbornene
This invention is based upon the discovery that a catalyst system which is comprised of (a) palladium or a palladium compound and (b) a fluorinated alcohol is effective for polymerizing...
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7119155 |
Polymerized catalyst composition II
Copolymerization of Ni(II) phenol imine complexes containing olefinic substituents on aryl groups with styrene in the presence of a radical initiator results in polymerized late transition metal...
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7119154 |
Bis (salicylaldiminato) titanium complex catalysts, highly syndiotactic polypropylene by a chain-end control mechanism, block copolymer containing this
Bis(salicylaldiminato)titanium complex with optionally substituted phenyl or cyclohexyl on nitrogen catalyzes highly syndiospecific polymerization of propylene. Syndiotactic polypropylene with...
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7115763 |
Polymerization of olefins
Olefins are polymerized by novel transition metal complexes of selected iminocarboxylate and iminoamido ligands, sometimes in the presence of cocatalysts such as alkylaluminum compounds or neutral...
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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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7115689 |
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: 1) a...
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7109279 |
Polymerization method in pores of porous metal complex
There is provided a method for producing a polymer, which is characterized by polymerizing or copolymerizing an organic compound monomer or monomers accommodated in pores of a porous metal complex.
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7109284 |
Olefin polymerization catalyst, process for polymerizing olefins, ethylene polymer obtained by said process and use thereof
The present invention provides a novel olefin polymerization catalyst having excellent olefin polymerization activity and, in polymerization with the catalyst comprising a transition metal...
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7109278 |
Organometallic transition metal compound, biscyclopentadienyl ligand system, catalyst system and preparation of polyolefins
Organometallic transition metal compounds of the formula (I) where M 1 is an element of group 3, 4, 5 or 6 of the Periodic Table of the Elements or the lanthanides; X are identical or different...
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7094723 |
Catalysts containing at least one heterocyclic ligand for improving the catalysts' performance of olefin polymerization
The present invention provides a non-metallocene catalyst comprising a complex having one or more ligands coordinated a transition metal. The catalyst contains substituents bonded to the transition...
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7094848 |
Olefin polymerization catalyst system
This invention relates to a compound represented by the formula:
wherein M is selected from groups 3–11 of the periodic table;
L 1 represents a formal anionic ligand, L 2 represents a...
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7091290 |
Method for preparing homo-and co-polymers of cyclic olefin compounds using an organic boron compound as a catalyst activator
The present invention relates to a method for preparing homo- and co-polymers having high molecular weights in high yields by polymerizing cyclic olefin compounds using a complex prepared by mixing...
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7091272 |
Olefin polymerization with pyridine moiety-containing single-site catalysts
An olefin polymerization process is disclosed. The polymerization is performed in the presence of a clay, an activator, and a transition metal complex that has at least one pyridine...
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7091291 |
Olefin polymerization process
A process for polymerizing an alpha-olefin is disclosed. The polymerization is performed in the presence of a catalyst system comprising a three-membered titanacycle. A wide variety of titanacycles...
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7087690 |
Substituted pyridyl amine catalysts and processes for polymerizing crystalline polymers
New ligands, compositions, metal-ligand complexes and arrays with pyridyl-amine ligands are disclosed that catalyze the polymerization of monomers into polymers. Certain of these catalysts with...
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7087686 |
Chain growth reaction process
A process is disclosed for the preparation of zinc alkyl chain growth products via a catalysed chain growth reaction of an alpha-olefin on a zinc alkyl, wherein the chain growth catalyst system...
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7084223 |
Supported late transition metal catalyst systems
The invention encompasses late transition metal catalyst systems immobilized on solid supports and their use in heterogenous polymerization processes, particularly in gas phase polymerization of...
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7081506 |
Ethylene polymerization employing bis-imino pyridinyl transition metal catalyst components
Ethylene polymerization processes employing bis-imino pyridinyl transition metal components which exhibit C2, C2v or Cs symmetry. Catalyst components of the same or different symmetries may be...
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7078363 |
Olefin polymerisation catalyst
The invention concerns a catalyst for olefin polymerisation, of formula (I) wherein: E is an oxygen or sulphur atom; X is a phosphorus, arsenic or antimony atom; M is a nickel, palladium or...
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7074863 |
Metallocene catalysts containing an idenyl moiety substituted at the 4,-5,-6- or 7-position by a siloxy or germyloxy group
A metallocene catalyst in which the metal is coordinated by a η5 cyclopentadienyl ligand which forms part of an indenyl or indenyloid moiety, characterized in that said moiety is directly or...
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7074865 |
Azaborolyl group 4 metal complexes, catalysts and olefin polymerization process
Metal complexes, catalysts derived therefrom, and polymerization processes using the same, characterized by the presence of one or more nitrogen and boron containing, anionic 5-membered cyclic...
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7064096 |
Dual catalyst on a single support
Bimodal polyolefins having a reverse or partial reversed comonomer incorporation may be prepared in the presence of a dual catalyst on the same support wherein each catalyst has a different...
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7064155 |
Luminescing and/or fluorescing radiation-curable, cyanoacrylate-containing compositions
A radiation-curable composition which includes a cyanoacrylate component or a cyanoacrylate-containing formulation; a metallocene component; a photoinitiator; and a luminescent and/or fluorescent dye.
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7060766 |
Methods of forming a supported activated catalyst composition
Processes of forming a supported activated catalyst composition and method of polymerization are disclosed, the process of forming the composition including combining a halogenated aromatic...
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7060765 |
Low comonomer incorporating metallocene catalyst compounds
The present invention provides polymerization catalyst compounds, catalyst systems including these catalyst compounds, and to their use in the polymerization of ethylene and at least one comonomer....
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7060768 |
Polymerization of olefinic compounds
Certain complexes containing ligands having a phosphino group, amino group or an imino group, and a second functional group such as amide, ester or ketone, when complexed to transition metals,...
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7056996 |
Productivity catalysts and microstructure control
Improved Group 3–11 transition metal based catalysts and processes for the polymerization of olefins are described. Some of the ligands are characterized by a preferred substitution pattern which...
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7056997 |
Catalyst composition and olefin polymerization using same
Novel metal complexes, particularly chromium complexes, which contain at least one tridentate ligand are disclosed and prepared. Olefins, particularly ethylene, can be reacted to form butene and/or...
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7056995 |
Catalyst System for the trimerization of olefins
The invention relates to a catalyst system for the selective trimerization of olefins, which system is based on a titanium complex of formula (Cp-B(R) n Ar)TiR 1 3 , wherein:
Cp is a...
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7053020 |
Catalyst systems for ethylene oligomerisation to linear alpha olefins
A catalyst system comprising:
(a) one or more bisarylimino pyridine iron or cobalt catalysts; (b) a first co-catalyst compound which is selected from aluminium alkyls, aluminoxanes, and...
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7053158 |
Carborane trianion based catalyst
Disclosed is a Ziegler-Natta catalyst for olefin polymerization comprising a metal cation of Group 4 or 14 of the Periodic Table (IUPAC 1976) that is coordinated to
a. a carborane dianion...
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7053157 |
Method for production of multimodal polyolefins of tunable composition, molecular weight, and polydispersity
The present invention relates to a method of producing multimodal polyolefins using at least one or more activated metallocene catalysts. The activated metallocene catalysts are used in combination...
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7053159 |
Process for producing polar olefin copolymer and polar olefin copolymer obtained thereby
A process for producing a polar olefin copolymer comprises copolymerizing a non-polar olefin and a polar olefin in the presence of a transition metal compound selected from Groups 4, 5, 6 and 11 of...
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7049378 |
Polymerization of olefin
Olefins, such as ethylene, are polymerized using as a polymerization catalyst a complex of a selected transition metal with a monoanionic ligand that has at least three atoms that may coordinate to...
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7045583 |
Olefin polymerization catalyst system
This invention relates to a catalyst precursor compound comprising a tridentate phenoxy-amide-amine group bound to a group 3 to 12 metal or lanthanide metal. In particular, this invention relates...
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