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WO/2011/076675A1 |
Catalyst component comprising Mg, Ti, and halogen atoms, and is characterized in that (a) the Ti atoms are present in an amount higher than 4% based on the total weight of the said catalyst component, (b) the amount of Mg and Ti atoms is...
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WO/2011/076669A2 |
Solid adducts comprising MgCl2 and water and optionally an organic hydroxy compound (A) selected from hydrocarbon structures containing at least one hydroxy group, said compounds being present in molar ratio defined by the following form...
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WO/2011/076617A1 |
The formula (II) is (formula (II)) wherein R1 is a semi-, highly- or perfluorinated hydrocarbon residue, and R2 is a residue selected from the group consisting of -C(R3)=C(R3')-R4, wherein R3, R4, R3', are independently from each other s...
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WO/2011/076780A1 |
A solid particulate catalyst free from an external carrier comprising (i) a complex of Formula (I), wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from -R'2C-, -R'2C-CR'2-, -R'2Si-, -R'2Si-Si...
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WO/2011/078923A1 |
Disclosed herein are processes to prepare polymerization catalyst compositions. The process comprises contacting an alumoxane with a support material in the presence of a solvent to form a supported alumoxane. The supported alumoxane may...
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WO/2011/076618A1 |
Process for the preparation of a catalyst system comprising the steps of (a) preparing a solution (A) comprising (i) a transition metal compound of formula (I) LmRnMq wherein "M" is a transition metal of anyone of the groups 3 to 10 of t...
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WO/2011/076371A1 |
Process for the preparation of a multimodal polyolefin polymer at temperatures of from 40 to 150°C and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst in a first and a second polymerization reactor connected...
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WO/2011/073373A1 |
The present invention relates to a process for cleaning a catalyst slurry preparation system and/or a catalyst preparation system. More particularly, the invention relates to a cleaning process for a catalyst preparation system and/or fo...
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WO/2011/072851A1 |
The present invention refers to a process for the preparation of supported catalysts for the polymerization of olefins comprising at least a late transition metal complex, wherein the process comprises two steps In the first step a catal...
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WO/2011/073380A1 |
The present invention relates to a method for producing a catalyst slurry blend suitable for polymerizing ethylene in an ethylene polymerization loop reactor for obtaining an at least trimodal polyethylene product, comprising the steps o...
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WO/2011/075536A2 |
Disclosed is a method for preparing a hydroxyl functionalized polymer from a Lewis acid promoted carbonyl-ene reaction comprising: selecting a vinylidene terminated polyolefin having a number average molecular weight from about 950 to ab...
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WO/2011/073364A1 |
The invention relates to a process for the preparation of a particulate bimodal polyethylene product having a median particle diameter of less than 300 μm in a serially connected double loop reactor, wherein said polymerization catalyst...
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WO/2011/075258A1 |
Provided is a method for making a polyolefin comprising contacting one or more olefins in a reactor containing a catalyst; polymerizing the one or more olefins to produce an olefin polymer characterized by a first melt flow ratio (MFR) a...
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WO/2011/073369A1 |
The present invention relates to a method for optimizing the sequential use of at least two ethylene polymerization catalysts to an ethylene polymerization loop reactor, comprising: transferring to a mixing vessel a first ethylene polyme...
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WO/2011/073372A1 |
The present invention relates to a method for initiating an ethylene polymerization reaction in an ethylene polymerization loop reactor. More particularly, the invention relates to the timing upon which hydrogen is introduced into the et...
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WO/2011/072850A1 |
Process for the polymerization of olefins at temperatures of from -20 to 200°C and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst and an antistatic agent, wherein the antistatic agent is an antistatically a...
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WO/2011/073366A1 |
The present invention relates to a method for monitoring the level of an ethylene polymerization catalyst slurry in a mud pot (2), whereby said catalyst slurry is prepared by introducing a solid catalyst and a liquid diluent in said mud ...
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WO/2011/073379A1 |
The invention relates to a process for the preparation of a particulate polyethylene product in a loop reactor, wherein the polymerization catalyst applied in the polymerization process comprises a particulate metallocene-alumoxane catal...
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WO/2011/075465A1 |
A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising ethylene and optionally a chain transfer agent system (CTA system) into a first autoclave reactor zone ...
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WO/2011/073368A1 |
The present invention relates to a method for optimizing the sequential feeding of at least two ethylene polymerization catalysts to an ethylene polymerization reactor, comprising: transferring to a mixing vessel a first ethylene polymer...
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WO/2011/074688A1 |
A production process of an olefin polymerization catalyst, comprising steps of (1) contacting a defined zinc compound, Zn(L1)2, with a defined halogenated alcohol, thereby forming a zinc atom-containing compound, and (2) contacting the z...
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WO/2011/071631A1 |
In oligomerizing alpha-olefins to produce poly alpha-olefins, the feedstock consists of nonene, or a blend of alpha-olefins comprising nonene. The nonene comprising alpha-olefin feedstock and at least one catalyst are subjected to oligom...
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WO/2011/069888A1 |
Process for the preparation of an unsupported, heterogeneous olefin polymerization catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) in the form of solid part...
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WO/2011/071237A2 |
The present invention relates to a manufacturing method of a solid catalyst for propylene polymerization, and more specifically to a manufacturing method of the solid catalyst for propylene polymerization, which has a high melt flow inde...
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WO/2011/069240A1 |
This invention relates to the polymerization of ethylene polymers using a continuously stirred tank reactor (CSTR) that is connected in series to a tubular reactor. The tubular reactor receives a polymer solution from the CSTR. Further p...
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WO/2011/071900A2 |
Catalysts and methods for making and using the same are provided. The method for fabricating a catalyst may includes contacting a supported catalyst with a monomer under conditions that reduce an overall charge of the catalyst to less th...
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WO/2011/066892A1 |
The present invention deals with a process of producing a polymer of at least one olefin in two consecutive reactors in gas phase in the presence of an olefin polymerisation catalyst where an olefin is polymerised in a first polymerizati...
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WO/2011/061134A1 |
A process for the preparation of propylene polymer compositions comprising from 50 to 90% by weight of a propylene polymer fraction insoluble in xylene at 25°C, and from 10 to 50% by weight of an ethylene copolymer fraction soluble in x...
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WO/2011/060958A1 |
Solid catalyst with a high thermal stability for the (co) polymerization of α-olefins, comprising titanium, magnesium, at least one metal selected from hafnium and zirconium, aluminum and chlorine, wherein at least 60% of the titanium i...
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WO/2011/057468A1 |
A simple and easy method for preparing supported non-metallocene catalyst is disclosed, which includes the following steps: dissolving magnesium compound and non-metallocene ligand in solvent, mixing optional porous carrier and the obtai...
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WO/2011/057908A1 |
The present invention relates to a process for polymerisation of olefins, in particular gas phase polymerisation of olefins, with the aid of a supported chromium oxide based catalyst.
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WO/2011/057926A1 |
The invention relates to a polymer composition with improved DC electrical properties, to a method for producing the polymer composition and to a cable surrounded by at least one layer comprising the polymer composition.
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WO/2011/057928A1 |
The invention relates to a polymer composition with improved DC electrical properties and to a cable surrounded by at least one layer comprising the polymer composition.
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WO/2011/058091A1 |
The present invention aims to provide a process for polymerizing at least one olefin in the presence of a polymerization catalyst comprising the steps of: (A) continuously introducing a first liquid comprising a transition metal compound...
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WO/2011/057927A1 |
The invention relates to a crosslinkable and crosslinked polymer composition with improved DC electrical properties and to a cable surrounded by at least one layer comprising the polymer composition.
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WO/2011/057469A1 |
A supported non-metallocene catalyst and preparation method thereof are provided The preparation method of the supported non-metallocene catalyst is simple, and the polymerization activity is flexible and adjustable The supported non-met...
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WO/2011/056423A2 |
This invention relates to Group 4 catalyst compounds containing di-anionic tridentate nitrogen/oxygen based ligands. The catalyst compounds are useful, with or without activators, to polymerize olefins, particularly α-olefms, or other u...
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WO/2011/056431A2 |
This invention relates to Group 4 catalyst compounds containing di-anionic tridentate nitrogen/oxygen based ligands. The catalyst compounds are useful, with or without activators, to polymerize olefins, particularly α-olefins, or other ...
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WO/2011/056020A2 |
The present invention relates to a mixed metallocene catalyst composition comprising a first metallocene catalyst and a second metallocene catalyst, and to a method for preparing a polyolefin using the catalyst composition. According to ...
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WO/2011/056428A2 |
This invention relates to Group 4 catalyst compounds containing di-anionic tridentate nitrogen/oxygen based ligands. The catalyst compounds are useful, with or without activators, to polymerize olefins, particularly α-olefms, or other u...
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WO/2011/056424A2 |
Group 4 catalyst compounds containing di-anionic tridentate nitrogen/oxygen based ligands are provided. The catalyst compounds are useful, with or without activators, to polymerize olefins, particularly α-olefms, or other unsaturated mo...
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WO/2011/054927A1 |
The invention relates to a new catalyst component for the polymerization of olefins comprising a compound of formula CyLMZp, wherein M is a Group 4-6 metal, Z is an anionic ligand, p is the number of anionic ligands, Cy is a mono- or pol...
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WO/2011/056432A2 |
This invention relates to Group 4 dialkyl compounds supported by a pyridyl-amido-aryl ("PAA"), an anisole-amido-aryl ("AAA"), a phenoxy-amido-pyridyl ("PAPY"), an anisole- amido-phenoxy ("AAP") or a anisole-amido-phenoxy ("AAP") tridenta...
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WO/2011/054785A1 |
The invention relates to the production of homo- or copolymers, in particular highly reactive isobutene- homo- or copolymers having a numerical average molecular weight Mn of 400 to 1,000,000, by means of polymerization of one or more et...
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WO/2011/055802A1 |
A reactor for propylene polymerization is provided with which it is possible to stably and efficiently produce a propylene polymer at low cost by multistage consecutive vapor-phase polymerization using an olefin polymerization catalyst, ...
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WO/2011/051367A1 |
Process for polymerising, in a loop reactor, at least one olefin monomer in a liquid diluent to produce a slurry comprising solid particulate olefin polymer and said diluent, wherein the ratio between the actual volumetric solids concent...
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WO/2011/051371A1 |
The present invention relates to the field of ethylene polymerisation with a supported late transition metal catalyst system.
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WO/2011/052757A1 |
The disclosed method for manufacturing a propylene polymer uses a horizontal polymerisation reactor which is internally equipped with an agitator which rotates around the horizontal axis thereof. Propylene, or propylene and an α-olefin ...
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WO/2011/050565A1 |
A supported non-metallocene catalyst, manufacturing method and application thereof are provided. The manufacturing method of said supported non-metallocene catalyst comprises:(a) dissolving a magnesium compound and a non-metallocene comp...
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WO/2011/050566A1 |
A supported non-metallocene catalyst and preparation method thereof are provided. The said preparation method comprises the following steps: dissolving a magnesium compound and a non-metallocene complex into a solvent to obtain a magnesi...
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