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WO/2018/134007A1 |
A fluid is fed into a polymer bed of a fluidized bed gas phase polymerization reactor by introducing it into the polymer bed through a distributor protruding into the fluidized bed zone of the reactor and terminating with a discharge end...
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WO/2018/132247A2 |
The present disclosure relates to bridged metallocene catalysts that include at least one indenyl ligand substituted at the 2-position with a C3-C10 branched alkyl, such as isopropyl. Catalyst systems including the catalysts, polymerizat...
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WO/2018/127772A1 |
The present invention relates to a novel transition metal compound based on a cyclopenta[a]naphthalene group, a transition metal catalyst composition comprising the same which has high catalytic activity for producing an ethylene homopol...
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WO/2018/127795A1 |
The present invention relates to: a novel indene-based transition metal compound; a transition metal catalyst composition for preparing an ethylene homopolymer or a copolymer of ethylene and one or more α-olefins, containing the same an...
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WO/2018/127472A1 |
A slurry polymerization process for the preparation of polyethylene in a reactor cascade of two or more polymerization reactors comprising polymerizing monomers in a polymerization reactor wherein the polymerization reactors comprise a r...
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WO/2018/123592A1 |
The present invention provides a polyester sheet which maintains superior mechanical strength, dimensional stability, and durability which are originally possessed by polyester, and has light reflection performance better than that of co...
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WO/2018/119538A1 |
The present invention relates to a method that allows the synthesis of oxidised and reduced polymer/carbon nanocomposites, the polymer being an olefin, more particularly polyethylene, the nanocomposites being obtained via in-situ polymer...
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WO/2018/122693A1 |
The present invention relates to a novel transition metal compound based on a cyclopenta[b]thiophenyl group, a transition metal catalyst composition, comprising same and having a high catalytic activity, for preparing ethylene homopolyme...
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WO/2018/123070A1 |
Provided are a novel Ziegler-Natta catalyst and a novel UHMWPE produced using the one thereof. Mixing MgO nanoparticles, a hydrocarbon solvent, and a surfactant produces the well-dispersed MgO nanoparticle-based Ziegler-Natta catalyst. C...
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WO/2018/113554A1 |
Provided is an alkoxy magnesium supported olefin polymerization catalyst component, comprising the reaction products of the following components: at least one alkoxy magnesium compound of Mg(OR1')N(OR2')2-N, at least one titanium compoun...
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WO/2018/118258A1 |
A method for controlling the start up conditions in a gas phase polymerization process is provided. An inventory can be calculated for each monomer, comonomer, and hydrogen sufficient to produce a polyethylene polymer having desired prop...
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WO/2018/118155A1 |
A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including ≥ 10 mol% tetramethylsilane under polymerizable conditions to produce a polyolefin polymer is provided.
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WO/2018/111631A1 |
Embodiments of the present disclosure are directed towards methods for rating polymerization processes based upon a first cracking index value and a second cracking index value.
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WO/2018/109415A1 |
The present invention relates to a composition comprising at least one dialkyl peroxide, in liquid form at ambient temperature, with a content of 75 wt% to 77 wt% relative to the total weight of the composition, and at least one mineral ...
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WO/2018/108936A1 |
The invention relates to a process for the preparation of a propylene homopolymer or a propylene α-olefin random copolymer comprising the step of a) preparing a propylene homopolymer or a propylene α-olefin random copolymer, wherein th...
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WO/2018/105865A1 |
The present invention relates to a catalyst composition for synthesizing an olefin copolymer comprising a first metallocene catalyst, a second metallocene catalyst, and a third metallocene catalyst, each having a specific chemical struct...
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WO/2018/105829A1 |
The present invention relates to a polyethylene resin composition for a bottle cap, comprising 0.01 to 0.4 parts by weight of a slip agent relative to 100 parts by weight of a polyethylene resin, wherein the slip agent is an unsaturated ...
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WO/2018/104080A1 |
The invention relates to a process of manufacturing high density polyethylene, comprising • performing first polymerization to form a first slurry in a first reactor (R1); transferring (104) at least part of the first slurry from the f...
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WO/2018/104424A1 |
The present invention relates to an organometallic compound of formula (I) or (II) in which M denotes an atom of a metal belonging to the 2nd column of the periodic table; R1, R2, R3 and R4 are hydrogen atoms or alkyl or aryl substituent...
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WO/2018/100076A1 |
The present invention relates to a process for operating a polymer powder degasser vessel, and in particular provides a process for operating a polymer powder degasser vessel which vessel comprises a silo comprising a main vertical cylin...
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WO/2018/098425A1 |
The present disclosure provides for a system and method for producing a polyethylene polymer (PE) that includes measuring a melt flow index (MFI) of the PE, comparing the measured value of the MFI to a predetermined desired range for the...
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WO/2018/097472A1 |
The present invention relates to a supported catalyst comprising a novel metallocene compound having excellent polymerization activity, and to a method for producing polypropylene having excellent processability and a broad molecular wei...
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WO/2018/092805A1 |
A master batch composition which is obtained by polymerizing propylene and ethylene with use of (A) a solid catalyst that contains, as essential components, magnesium, titanium, a halogen and an electron donor compound selected from amon...
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WO/2018/091684A1 |
A complex of formula (I) wherein M is zirconium or hafnium; each X independently is a sigma ligand; L is a divalent bridge selected from -R'2C-, -R'2C-CR'2-, -R'2Si-, -R'2Si-SiR'2-, -R'2Ge-, wherein each R' is independently a hydrogen at...
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WO/2018/092803A1 |
A method for producing an α-olefin oligomer, which comprises a process wherein: an α-olefin oligomer mixture is produced by performing an oligomerization reaction of an α-olefin; subsequently, a distillation residue containing α-olef...
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WO/2018/093085A1 |
The present invention relates to a polyethylene resin exhibiting excellent impact strength, and more specifically, to a polyethylene resin exhibiting excellent impact strength and flexural strength when manufactured into a molded article.
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WO/2018/093052A2 |
The present invention relates to an olefinic monomer recovery device capable of suppressing fouling and pressure drop in the recovery device in a process of separating and recovering unreacted monomers after production of a polyolefin re...
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WO/2018/088359A1 |
[1] A propylene polymer having a melting endotherm (ΔH-D), as measured using differential scanning calorimetry (DSC), of 0 to 80 J/g, and a viscosity, as measured using a B-type viscometer, of 500 to 6000 mPa∙s; [2] a propylene resin ...
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WO/2018/089194A1 |
A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
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WO/2018/089193A1 |
A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
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WO/2018/089165A1 |
This invention relates to novel transition metal catalyst compounds comprising four oxygen atoms bonded to a transition metal where two of the oxygen groups are bonded to the metal by dative bonds and a silyl or germyl bridge, catalyst s...
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WO/2018/088741A1 |
A crosslinked polyethylene composition according to the present invention is characterized in that the migration of an additive is suppressed due to a small oil content of low-density polyethylene, so that when crosslinked polyethylene i...
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WO/2018/088209A1 |
The present invention provides an ethylene polymer which has a weight-average molecular weight (Mw) of 200,000-3,000,000. The ethylene polymer, when examined by a solid echo method with pulsed NMR, gives a free induction decay at 130°C,...
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WO/2018/089195A1 |
Provided are various bimodal polyethylene, including but not limited to a bimodal polyethylene for a pipe having a density of from 0.9340 to 0.9470 gram/cubic centimeters (g/ccm), a melt index (I2) of from 0.1 to 0.7 gram/10 minute, a me...
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WO/2018/087214A1 |
A process for preparing an ethylene polymer comprising homopolymerizing ethylene or copolymerizing ethylene with one or more comonomers in a gas-phase polymerization reactor comprising a riser unit, in which growing polymer particles flo...
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WO/2018/084983A1 |
A polymerization catalyst supply system is provided. The polymerization catalyst supply system can be used to prepare polyolefin polymers with multimodal or broad molecular weight distribution, or to prepare polyolefins having broad comp...
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WO/2018/077209A1 |
Provided are a magnesium alkoxide particle and an application thereof. The magnesium alkoxide particle contains the reaction product of the following components: 1) a magnesium powder, 2) a mixed alcohol, 3) a halogenating agent, and 4) ...
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WO/2018/078571A1 |
The present disclosure relates to an ethylene based disentangled polymer and a process for preparing the same, having predetermined modality. The process comprises polymerization of at least one olefinic monomer in the presence of a cata...
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WO/2018/080701A1 |
Disclosed is a method for polymerizing olefins comprising passing a heterogeneous single-site catalyst to a solution or slurry polymerization reactor in the absence of pre-polymerization, wherein the polymerization reactor operates at a ...
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WO/2018/067367A1 |
A phthalate-free procatalyst composition is disclosed for olefin polymerization that exhibits excellent polymerization activity and response to hydrogen, and can produce a polyolefin exhibiting high stereoregularity, high melt flow rate,...
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WO/2018/066535A1 |
Provided is a solid catalyst component for olefin polymerization, which has extremely low adhesion caused by stickiness (tackiness) of polymer particles during polymerization of olefins, especially during a copolymerization reaction such...
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WO/2018/063899A1 |
A magnesium halide-supported titanium procatalyst, a catalyst prepared therefrom, an enhanced catalyst consists essentially of a product of a reaction of the magnesium halide-supported titanium procatalyst and a hydrocarbylaluminoxane. A...
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WO/2018/063853A1 |
A process to prepare an ethylene-based polymer, said process comprising polymerizing a mixture comprising ethylene, at a pressure greater than, or equal to, 100 MPa, in the presence of at least one free-radical initiator; and in a reacto...
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WO/2018/060029A1 |
The present invention deals with a process for producing a coated pipe. The process comprises (i) homopolymerising ethylene or copolymerising ethylene and an α-olefin comonomer in a first polymerisation step in the presence of a polymer...
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WO/2018/060224A1 |
The invention relates to a process for the production of a high strength transparent high density polyethylene article comprising the steps of (i) heating a high density polyethylene (HDPE) to a temperature above the melting temperature ...
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WO/2018/063765A1 |
A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including propane and isobutane under polymerizable conditions to produce a polyolefin polymer is provided.
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WO/2018/064050A2 |
A method of preparing a catalyst comprising a) contacting (i) a silica-support, (ii) an oxotitanium compound, (iii) a chromium-containing compound, and (iv) an optional solvent to form a first aqueous mixture comprising a pre-catalyst an...
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WO/2018/063898A1 |
A modified Ziegler-Natta procatalyst that is a product mixture of modifying an initial Ziegler-Natta procatalyst with a molecular (pro)catalyst, and optionally an activator, the modifying occurring before activating the modified Ziegler-...
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WO/2018/063900A1 |
A method of polymerizing an olefin using a combination of a Ziegler-Natta catalyst and an unsupported molecular catalyst in a same reactor at the same time to give a polyolefin product, and the polyolefin product made by the method. Also...
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WO/2018/063767A1 |
A process including contacting one or more monomers, at least one catalyst system, and a condensing agent including a majority of propane under polymerizable conditions to produce a poly olefin polymer is provided.
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