|
Match
|
Document |
Document Title |
|
|
7388062 |
Group IIIb metal complexes with “constrained geometry” fluorenyl based ligands
The present invention discloses a metallocene catalyst component based on a Group IIIb metal of the periodic Table and a bridged heteroatom-fluorenyl ligand. It also discloses its method of...
|
|
|
7385015 |
Trialkylaluminum treated supports
This invention relates to a process to prepare a trialkylaluminum treated support comprising: 1) combining a support with first trialkylaluminum compound(s), where the alkyl groups have at least 2...
|
|
|
7381783 |
Polymerization catalyst systems, their use, their products and articles thereof
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...
|
|
|
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.
|
|
|
7378481 |
Hot Melt Adhesives
A hot melt adhesive based on a functionalized metallocene polyethylene copolymer finds use in packaging applications where high heat resistance, as well as good cold tolerance, is required.
|
|
|
7378476 |
Olefin polymerization process in the presence of a radical generating system
An olefin polymerization process comprises gas-phase polymerization of at least one olefin monomer in a reactor using a Ziegler-Natta or metallocene catalyst system in the presence of at least one...
|
|
|
7368411 |
Supported metallocene catalysts and their use in producing stereospecific polymers
Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers which contain three or more carbon atoms or...
|
|
|
7365136 |
High melt strength polypropylene
The present invention concerns a high melt strength propylene polymer or copolymer suitable for manufacturing foams and thermoformed product exhibiting a melt strength of at least 3 g and...
|
|
|
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...
|
|
|
7348385 |
Acrylate/methacrylate adhesives initiated by chlorosulfonated polymer
An adhesive formulation including an acrylate monomer and/or a methacrylate monomer, a chlorosulfonated polymer resin, and a reducing agent. The adhesive also includes a cycloheteroatom zirconate...
|
|
|
7345119 |
Olefin polymerization catalyst and olefin polymerization method using the same
An olefin polymerization solid catalyst including a reaction product of a transition metal compound and an organoaluminum compound carried on a support having silica treated with an...
|
|
|
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...
|
|
|
7335710 |
Polymerization process
A process for the polymerisation of olefins is described involving the use of a catalyst system comprising a supported transition metal compound and an activator based on an organoborane and an...
|
|
|
7335711 |
Preparation and use of tetrasubstituted fluorenyl catalysts for polymerization of olefins
Catalyst compositions and processes for the polymerization of ethylenically unsaturated monomers to produce polymers, including copolymers or homopolymers. Such monomers include ethylene, C 3+ ...
|
|
|
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.
|
|
|
7332551 |
Partially fluorinated naphthyl-based borates
Non-coordinating anions or anion precursors are disclosed. These non-coordinating anions serve as the activator for olefin polymerization catalyst systems. As such, they abstract an alkyl leaving...
|
|
|
7332456 |
Alpha olefin catalyst systems
The present invention provides a method for varying the melting points and molecular weights of polyolefins by changing the structure of the catalyst used in the polymerization. The catalysts that...
|
|
|
7326756 |
High temperature bulk polymerization of branched crystalline polypropylene
Branched crystalline polypropylene compositions and methods for the preparation of branched crystalline polypropylene compositions are provided. For example, described herein is a process of...
|
|
|
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...
|
|
|
7323524 |
Tandem tetramerisation-polymerisation of olefins
The invention provides a process for polymerising olefins to branched polyolefins in the presence of a polymerisation catalyst and a cocatalyst, wherein the cocatalyst produces 1-octene in a...
|
|
|
7320950 |
Propylene polymer, and resin composition and molded product thereof
The propylene polymer of the present invention satisfies (1) a 25° C. hexane soluble content (H25) of 0-80 wt %; and (2) either no melting temperature (Tm) measurable by differential scanning...
|
|
|
7319125 |
Supercritical polymerization process and polymers produced therefrom
This invention relates to a process to produce propylene polymers comprising contacting a metallocene catalyst compound and an activator in a reaction medium comprising propylene, from 0 to 30...
|
|
|
7312283 |
Polymerization catalysts and process for producing bimodal polymers in a single reactor
Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. Methods for preparing and using such...
|
|
|
7309678 |
Polyamide supported metallocene catalysts
Supported stereospecific catalysts and processes for the stereotactic propagation of a polymer chain derived from ethylenically unsaturated monomers such as the polymerization of propylene to...
|
|
|
7309747 |
Highly flowable 1-butene polymer and process for producing the same
A 1-butene polymer satisfying the following (1), (2) and either (3) or (3′): a process for producing the polymer; a resin modifier comprising the polymer; and a hot-melt adhesive containing the...
|
|
|
7307177 |
Metallocene complexes, their synthesis and use in catalyst systems for olefin polymerization
A metallocene complex is represented by the the formula
(C p R 5 ) n MX k
...
|
|
|
7307130 |
Polymerization reactor operability using static charge modifier agents
The present invention relates to a catalyst composition and a method for making the catalyst composition of a polymerization catalyst and a static charge modifier. The invention is also directed to...
|
|
|
7304118 |
Polyethylene pipe having better melt processibility and high resistance to stress and method of preparing the same using metallocene catalyst
An ethylene-based copolymer for non-crosslinked water supply pipe is provided. The ethylene-based copolymer is prepared using a supported hybrid metallocene catalyst and has a dimodal or broad...
|
|
|
7300988 |
Single catalyst low, medium and high density polyethylenes
A method of polymerizing olefins comprising combining in one embodiment ethylene and optionally one or more α-olefins with a catalyst composition in a continuous polymerization reactor at a...
|
|
|
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:
...
|
|
|
7294599 |
Acidic activator-supports and catalysts for olefin polymerization
This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst...
|
|
|
7294681 |
Mutliple catalyst system for olefin polymerization and polymers produced therefrom
This invention relates to a polymer of one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ethylene, and polymerization processes for producing the same.
|
|
|
7294600 |
Supported hybrid metallocene catalyst, method for preparing the same, and method for preparing polyolefin using the same
The present invention relates to a supported metallocene catalyst used for preparing polyolefin whose physical properties and molecular weight distribution can be easily controlled, a method for...
|
|
|
7285513 |
Preparation of catalyst systems
The present invention relates to a process for preparing a catalyst for olefin polymerization which is obtainable by bringing
A) at least one organic transition metal compound, B) a mixture of at...
|
|
|
7285608 |
Metallocene ligands, metallocene compounds and metallocene catalysts, their synthesis and their use for the polymerization of olefins
A catalyst system includes a metallocene compound having the formula R 9 L 1 L 2 M 1 R 1 R 2 wherein R 9 is a bridge between ligands L 1 and L 2 and M 1 is a metal of Group IVB of the...
|
|
|
7282546 |
Cocatalysts for reduction of production problems in metallocene-catalyzed polymerizations
Polyolefins may be prepared using a cocatalyst conforming to the formula:
AIR z (X z ) n L z m
|
|
|
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...
|
|
|
7276567 |
Heterocyclic substituted metallocene compounds for olefin polymerization
This invention relates to compounds represented by formula:
wherein
M is a group 3, 4, 5 or 6 transition, lanthanide, or actinide metal atom; E is an indenyl ligand substituted in any position...
|
|
|
7273913 |
Process for the preparation of ethylene copolymers
A process is described for the preparation of ethylene copolymers having a wide molecular weight distribution, characterized in that it is carried out in the presence of meso- and...
|
|
|
7273914 |
Olefin polymerization methods
Methods for making polyolefins are disclosed. One method comprises polymerizing an olefin in the presence of a catalyst system comprising a single-site complex, an agglomerated metal oxide/clay...
|
|
|
7271226 |
Olefin polymerisation process
A process for the homopolymerisation of ethylene or the copolymerisation of ethylene and (a-olefins in a polymeristation reactor, said process carried out in the presence of a catalyst system...
|
|
|
7265193 |
Polymerization process
This invention relates to a process to polymerize olefins comprising:
contacting: (i) propylene and (ii) a mixture comprising, optionally ethylene, and three or more different alpha olefins...
|
|
|
7259216 |
Method for producing highly branched ethylene polymers
A process for preparing highly branched ethylene polymers comprises polymerizing ethylene over a catalyst system comprising a compound of the formula Ia or Ib
and an activator, where the...
|
|
|
7259215 |
Process for producing propylene/ethylene block copolymer and propylene/ethylene block copolymer
A process for producing a propylene-ethylene block copolymer in a good morphology using a catalyst system comprising a metallocene catalyst (1) preparing high crystalline polypropylene, a...
|
|
|
7256247 |
Polymerization of polyethylene having high molecular weight
The present invention includes a bimodal polyethylene polymerization process wherein metallocene catalyst to is used to adjust the hydrogen response of a Ziegler-Natta catalyst. The polymerization...
|
|
|
7256239 |
Polymer film
A film of a polyethylene produced by polymerization catalysed by a single site catalyst and comprising as comonomers to ethylene at least two C 4-12 alpha olefins, preferably but-1-ene and hex-1-ene.
|
|
|
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...
|
|
|
7247686 |
Solid cocatalyst component for olefin polymerization and catalyst system thereof
A solid cocatalyst for olefin polymerization in which an ion-containing compound comprising a cation expressed by [R 4 M]+, wherein the group R are each individually selected from the group...
|
|
|
7244795 |
Polymerization process using metallocene catalyst systems
The present invention relates to a polymerization process using improved metallocene catalyst systems. Specifically, the catalyst systems of the present invention relate to a metallocene compound...
|