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WO/2022/144650A1 |
Provided are a metal-ligand complex having both a strong electron donor group and an electron withdrawing group by introducing a specific functional group, difluoromethylene group, into an oxygen-oxygen bridge, a catalyst composition for...
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WO/2022/136779A1 |
The invention relates to a process for preparing a polyethylene, wherein gas phase ethylene is polymerized in the presence of a catalytic system supported on a porous inorganic support, the catalytic system being based at least on a rare...
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WO/2022/139317A1 |
The present invention relates to a hybrid catalyst composition comprising a heterogeneous transition metal compound, a catalyst for olefin polymerization comprising same, and a method for preparing an olefin-based polymer in which genera...
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WO/2022/136778A1 |
The invention relates to a catalyst system supported on a porous inorganic support, wherein the catalyst system is based at least on a rare-earth metallocene and on an organomagnesium compound, and also to the method for preparing same b...
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WO/2022/133849A1 |
A method for preparing a supported olefin polymerization catalyst, comprising: step 1, activating a COF at 0°C-800°C for 0.1-48 hours under inert atmosphere or vacuum protection; optionally, step 2, reacting the activated COF with an a...
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WO/2022/138634A1 |
[Problem] To provide a solid titanium catalyst component, an olefin polymerization catalyst and an olefin polymerization method, each enabling the production of an olefin polymer at a high activity, said olefin polymer being superior in ...
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WO/2022/136780A1 |
The invention relates to a method for preparing a copolymer of ethylene and of a linear α-olefin having 3 to 8 carbon atoms containing less than 1 mol% of the linear α-olefin, which method comprises the gas-phase polymerisation of a mo...
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WO/2022/131058A1 |
Provided are: a radical polymerization method with which a radical-polymerizable fluorine-based monomer can be radical-polymerized in a low temperature environment such as the room temperature range, using a radical polymerization initia...
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WO/2022/129495A1 |
The present invention is directed to a method for the preparation of homo- and copolymers of alkyl (meth)acrylates having a low residual monomer content, to the homo- and copolymers of alkyl (meth)acrylates obtained by this method and to...
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WO/2022/128790A1 |
Graphene oxide (GO)/silica (SiO2) supported Ziegler-Natta (Z-N) catalysts are described. The catalyst includes a Z-N catalyst attached to a GO/SiO2 support. The GO/SiO2 support has a weight ratio of GO:SiO2 of greater than 1:5 and includ...
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WO/2022/133142A1 |
A process to form a composition comprising an ethylene/vinylarene multiblock interpolymer, said process comprising polymerizing, in a single reactor, a mixture comprising ethylene, a vinylarene, and optionally an alpha-olefin, in the pre...
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WO/2022/130220A1 |
The present invention relates to a process to control the molecular weight distribution of polyethylene and to reduce the smoke quantity during the formation of polyethylene, wherein the process for preparing polyethylene having narrow m...
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WO/2022/126258A1 |
A process for producing an unsaturated isoolefin copolymer involves: sonicating a solution of an initiator system in an organic solvent, the initiator system comprising a Lewis acid catalyst and a proton source, to produce a sonicated in...
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WO/2022/131690A1 |
The present invention relates to an olefinic polymer, and a method for preparing same. The olefinic polymer according to an embodiment of the present invention has a wide molecular weight distribution and thus has excellent processabilit...
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WO/2022/131693A1 |
The present invention relates to an olefin-based polymer and a preparation method therefor. Specifically, according to an implementation of the present invention, provided are an olefin-based polymer and a preparation method therefor, th...
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WO/2022/131230A1 |
The purpose of the present invention is to provide a borate compound which is useful as a co-catalyst that is used for polymerization of olefins or dienes. The present invention relates to: a borate compound which is represented by formu...
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WO/2022/126941A1 |
An invert phase emulsion having double particle size distribution, the invert emulsion having a particle size distribution of latex particles between 20 nm and 70 nm and between 100 nm and 500 nm in the same invert emulsion system. The p...
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WO/2022/126256A1 |
A process for producing an isoolefin homopolymer comprises: sonicating a solution of an initiator system in an organic solvent, the initiator system comprising a Lewis acid catalyst and a proton source selected from the group consisting ...
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WO/2022/124694A1 |
The present invention relates to an olefin-based polymer, a film prepared therefrom, and preparation methods therefor. An olefin-based polymer according to an implementation of the present invention has excellent processability, and a fi...
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WO/2022/124695A1 |
The present invention relates to an olefin polymer and a preparation method therefor. The olefin polymer according to an embodiment of the present invention has a high melting point and a high crystallization temperature, thus having exc...
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WO/2022/124692A1 |
The present invention relates to an olefinic polymer, and a method for preparing same. The olefinic polymer according to an embodiment of the present invention has excellent melt strength, and thus has excellent bubble stability during b...
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WO/2022/123414A1 |
The copolymerization of ethylene with vinylcyclohexane (VCH) is carried out with a catalyst system comprising a bridged hafnocene. High levels of vinylcyclohexane incorporation can be achieved affording ethylene-vinylcyclohexane copolyme...
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WO/2022/120321A1 |
Provided herein are metallocene-catalyzed polyethylene compositions that exhibit a high degree of broad orthogonal composition distribution ("BOCD"), meaning that they have a relatively high degree of short-chain branching in higher-mole...
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WO/2022/112691A1 |
The invention relates to a catalyst system based on at least one rare-earth metallocene and, as a co-catalyst, a magnesium organic compound of formula RB-(Mg-RA)m-Mg-RB, RB comprising a benzene ring substituted with the magnesium atom, w...
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WO/2022/112389A1 |
A process for the preparation of a solid support for a procatalyst suitable for preparing a catalyst composition for olefin polymerization, said process comprising: A. providing or preparing a compound R4 zMgX4 2-z wherein: R4 is indepen...
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WO/2022/114904A1 |
The present invention provides a polyethylene which has excellent workability and is able to reduce injection molding defect rates, and a method for preparing same.
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WO/2022/114635A1 |
The present invention relates to a transition metal compound, an olefin polymerization catalyst comprising same, and a method for preparing same. Specifically, the present invention relates to a transition metal compound having a carbon-...
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WO/2022/112692A1 |
The invention relates to a catalytic system based on at least one rare-earth metallocene and, as co-catalyst, an organomagnesium compound having the formula X-Mg-RA-Mg-X, where RA is a divalent aliphatic hydrocarbon chain, interrupted or...
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WO/2022/112690A1 |
The invention relates to a diorganomagnesium compound having the formula RB-(Mg-RA)m-Mg-RB, where RB comprises a benzene ring substituted by the magnesium atom, one of the carbon atoms of the benzene ring in the ortho position of the mag...
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WO/2022/114710A1 |
The present invention relates to an organic-inorganic hybrid polyolefin composite and a preparation method thereof.
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WO/2022/112387A1 |
The invention relates to isoprene and butadiene and/or pentadiene stereoblock copolymers in which the different stereoregular blocks, joined to each other by means of a single junction point, have different structures and thermal propert...
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WO/2022/112693A1 |
The invention relates to a telechelic polymer having the formula Z1-POLY-Z2, wherein the term "POLY" denotes a polymer chain which comprises units of a 1,3 diene, units of ethylene and cyclic units, 1,2-cyclohexane units, Z1 and Z2 denot...
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WO/2022/114902A1 |
The present invention provides a polyethylene and a preparation method therefor, wherein the polyethylene has an improved feature of total volatile organic compounds (TVOC) that may be generated by a low-molecular weight polymer and is s...
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WO/2022/114910A1 |
The present invention provides a method for preparing a supported metallocene catalyst, the method being capable of reducing a fine powder generation amount while exhibiting catalyst activity, so as to minimize the generation of fouling ...
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WO/2022/106710A1 |
A process for the preparation of isotactic propylene polymer compositions involving the polymerisation of propylene and optionally one or more comonomers selected from ethylene and α-olefins containing 4 to 12 carbon atoms in one or mor...
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WO/2022/108233A1 |
The present invention relates to an olefin-based polymer, a film prepared therefrom, and preparation methods therefor. An olefin-based polymer according to an embodiment of the present invention has excellent processability, and a film p...
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WO/2022/108804A1 |
The present invention relates to a process for polymerization of a monomer, and in particular whereby polymer particles are transferred from an upstream polymerization reactor, which process comprises: (a) discharging a mixture comprisin...
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WO/2022/106688A1 |
The present invention relates to a process for solution copolymerization process to produce a functionalized polyolefin using a catalyst system comprising a hafnium or zirconium complex of a polyvalent aryloxyether and a co-catalyst sele...
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WO/2022/108974A1 |
The present disclosure relates to supported catalyst systems for olefin polymerization, catalyst system precursors, methods of producing the precursors and catalyst systems and polyolefins formed from the catalyst systems.
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WO/2022/108252A1 |
The present invention relates to an olefin-based polymer, a film prepared therefrom, and preparation methods therefor. An olefin-based polymer according to an embodiment of the present invention has excellent processability, and a film p...
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WO/2022/109518A1 |
A gas phase reactor startup process comprising providing a reactor having a vertical cylindrical portion from a distributor plate at the base to a neck at the top and comprising a fluidized bed zone therebetween, wherein above the neck a...
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WO/2022/108971A1 |
The present disclosure relates to a precursor for making an activator in a catalyst system for olefin polymerization and methods of producing the precursor, the catalyst system, and the polyolefin. In at least one embodiment, an alumoxan...
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WO/2022/108167A1 |
The present invention relates to a polyolefin. More particularly, the present invention relates to a polyolefin capable of exhibiting improved mechanical properties such as excellent drop impact strength.
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WO/2022/108254A1 |
The present invention relates to an olefin-based polymer and a method for preparing same. Specifically, the present invention relates to an olefin-based polymer for which processability can be controlled according to a change in density,...
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WO/2022/108803A1 |
The present invention relates to a process for supply of a polymerization catalyst component to a polymerization reactor which comprises: a. Providing a first stream comprising the catalyst component, b. Providing a diluent stream in a s...
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WO/2022/104877A1 |
Disclosed are an ethylene copolymer and a method for preparing same, and a composition, crosslinked polymer, and tire containing said ethylene copolymer; the ethylene copolymer contains an ethylene structural unit derived from ethylene a...
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WO/2022/106689A1 |
The present invention relates to a process for solution copolymerization process to produce a functionalized polyolefin using a catalyst system comprising a hafnium or zirconium complex of a polyvalent aryloxyether and a co-catalyst sele...
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WO/2022/103045A1 |
The present invention relates to a mixed catalyst composition comprising different transition metal compounds, a catalyst for olefin polymerization, comprising same, and preparation methods therefor. Specifically, the present invention r...
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WO/2022/104029A1 |
Provided herein are compounds that can be used as a catalyst to form cyclic polymers, methods of making and using the same. For example, provided herein are compounds of formula (I) or (II).
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WO/2022/097580A1 |
The compound having a dipicolylamine moiety according to the present invention is represent by formula (I): A1-X-B1. In formula (I), X includes a repeating unit represented by formula (II) and having a dipicolylamine moiety, and A1 and B...
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