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Matches 601 - 650 out of 28,756

Document Document Title
WO/2016/052982A8
The present invention relates to: a polyolefin which exhibits narrow molecular weight distribution, high strength and a high stretching ratio; and a preparation method therefor. According to the present invention, it is possible to provi...  
WO/2017/016006A1
Disclosed is a polypropylene tail gas recovery device. The polypropylene tail gas recovery device comprises a compression unit, a drying unit, a membrane separation unit and a cryogenic separation unit connected in sequence, wherein the ...  
WO/2017/019380A1
A method of monitoring a solid component of a reactor feed stream (12, 12a) in a polymer production system, such as a loop slurry process (100), comprising (a) measuring a turbidity of the reactor feed stream (12, 12a) with a turbidimete...  
WO/2017/017336A1
The invention relates to a process for manufacturing an antishrinkage agent for moulding an unsaturated polyester in the presence of a reactive diluent, comprising at least one monomer copolymerizable with the unsaturated polyester, comp...  
WO/2017/011073A1
This invention relates to novel bridged bis indenyl metallocene catalyst compounds where the bridge is -((R15*)2Si-Si(R15)2)- wherein, each R15 and R15* is identical or different and is a substituted or unsubstituted, branched or unbranc...  
WO/2017/009386A1
The present invention relates to a process for preparing a polyethylene product having a multimodal molecular weight distribution, said process comprising the steps of: (a) feeding ethylene monomer, a diluent, at least one metallocene ca...  
WO/2017/003566A1
Systems and processes for controlling fouling in the manufacture of ethylene polymers and copolymers at high pressure. Disclosed is a high pressure polyethylene polymerization system comprising a reactor, a primary compressor, and a seco...  
WO/2017/001384A1
The present invention relates to the use of a free radical initiator composition for the reduction of gels in polyethylene materials wherein a polyethylene material is subjected to melt processing in the presence of a free radical initia...  
WO/2017/003262A1
The present invention provides a novel transition metal compound and a catalyst composition containing same, the transition metal compound having excellent polymer reactivity along with structural stability, thereby being capable of bein...  
WO/2017/003803A1
An article is disclosed that comprises at least about 95 weight percent reclaimed polyethylene base resin. The base resin comprises less than about 10 ppm Al, less than about 200 ppm Ti, and less than about 5 ppm Zn. The article is subst...  
WO/2017/003800A1
A composition is disclosed that comprises at least about 95 weight percent reclaimed polypropylene. The reclaimed polypropylene comprises less than about 10 ppm Al, less than about 5 ppm Ti, and less than about 5 ppm Zn. The reclaimed po...  
WO/2017/002756A1
Provided is a method for producing a polyolefin including (1) a step (1) for subjecting one or more olefins to solution polymerization or slurry polymerization in the presence of a polymerization catalyst and producing a polymer solution...  
WO/2017/001882A1
The invention relates to a method for the preparation of polyethylene having a molecular weight of at least 1 million g/mol, comprising the following steps: -introducing the following compounds into a gas phase reactor: an olefin polymer...  
WO/2017/003261A1
The present invention provides a novel transition metal compound and a catalyst composition containing same, the transition metal compound having excellent polymer reactivity along with structural stability, thereby being capable of bein...  
WO/2017/003801A1
A composition is disclosed that comprises at least about 95 weight percent reclaimed polyethylene. The reclaimed polyethylene comprises less than about 10 ppm Al, less than about 200 ppm Ti, and less than about 5 ppm Zn. The reclaimed po...  
WO/2017/003565A1
New pyridylamide transition metal complex compositions for olefin polymerizations are described herein featuring a 7-membered chelate ring and a cyclometalated hydrocarbyl group. When activated using typical activators these compositions...  
WO/2016/210308A1
A process to form an ethylene-based polymer comprises polymerizing a reaction mixture comprising ethylene, at least one monomeric chain transier agent, and at least one chain transfer agent system comprising at least one chain transfer a...  
WO/2016/207909A1
The present invention relates to novel polymerization catalysts. More particularly, the present invention relates to a novel catalysts for the preparation of ultra high molecular weight polyethylene (UHMWPE) and process for preparation t...  
WO/2016/210160A1
A process to form an ethylene-based polymer comprises polymerizing a reaction mixture comprising ethylene, at least one symmetrical polyene and at least one chain transfer agent system comprising at least one chain transfer agent (CTA) i...  
WO/2016/209807A1
A composition comprising an ethylene-based polymer is made by a process comprising the steps of: (A) contacting under first polymerization conditions at least ethylene and at least one molecular catalyst to form a first ethylene-based po...  
WO/2016/204457A1
The present invention relates to a method for preparing a polyolefin having a wide molecular weight distribution. More specifically, provided is a method for preparing a polyolefin having a wide molecular weight distribution and an ultra...  
WO/2016/204469A1
The present invention relates to a method for producing a metallocene-supported catalyst, capable of more effectively preparing a polyolefin, which has a molecular weight distribution for good swelling, through increased polymer elastici...  
WO/2016/204387A1
The present invention relates to a polyolefin powder for fiber preparation and a fiber comprising the same. According to the present invention, a polyolefin can be provided that exhibits a high-molecular weight range and a narrow molecul...  
WO/2016/196965A1
A method of refining a polymer resin material is provided. The method comprises melting and subjecting the resin material to shear stresses in a range of 250 kPa to 400 kPa to form a refined resin material. The refined resin material may...  
WO/2016/196490A1
Polymerization reactor systems providing integrated liquid-solid sampling systems are disclosed. Methods for operating such polymerization reactor systems and for measuring a property of the liquid portion of liquid-solid mixture are des...  
WO/2016/195867A1
This invention relates to high porosity (>15%) and/or low pore diameter (PD < 165 μιη) propylene polymers and propylene polymerization processes using single site catalyst systems with supports having high surface area (SA > 400 m2/g)...  
WO/2016/197037A1
The invention is directed to a supported olefin polymerization catalyst system comprising catalyst compound, silica support and alumoxane activator, where part of the alumoxane is present on the support and part of the alumoxane is not a...  
WO/2016/195868A1
This invention relates to catalyst supports having high surface area (SA ≥ 400 m2 /g), low pore volume (PV ≤ 2 mL/g), a specific mean pore diameter range (PD = 1 - 20 nm), and high average particle size (PS ≥ 30 μιη), supported ...  
WO/2016/195865A1
This invention relates to high porosity (≥15%) and/or low pore diameter (PD < 165 μm) propylene polymers and propylene polymerization processes using single site catalyst systems with supports having high surface area (SA ≥ 400 m2/g...  
WO/2016/195424A1
The present invention relates to a novel supported metallocene catalyst, and a method for preparing a polyolefin by using the same. According to the present invention, the supported metallocene catalyst exhibits high polymerization activ...  
WO/2016/195996A1
Processes for producing a polypropylene product by using a lower purity propylene stream. An operating parameter of the separation zone for a dehydrogenation zone effluent may be adjusted or controlled to lower the purity of the propylen...  
WO/2016/195870A1
This invention relates to heterophasic copolymers of propylene and an alpha olefin comonomer having a high fill phase content (≥15%), and heterophasic polymerization processes using a single site catalyst system with a support having h...  
WO/2016/195168A1
The present invention relates to a 1-octene composition, and the 1-octene composition according to the present invention is characterized by being prepared by ethylene oligomerization and comprising a high content of 1-octene and monomer...  
WO/2016/195866A1
This invention relates to single site catalyst supportation methods involving high temperature treatment (≥ 40°C, e.g., 100-130°C) to improve catalyst activity for olefin polymerization, e.g., propylene polymerization, and to the sup...  
WO/2016/188999A1
The invention relates to a metallocene complex (1) according to formula (I) wherein M is a metal selected from lanthanides or transition metals from group 3, 4, 5 or 6 of the Periodic System of the Elements, Q is an anionic ligand to M, ...  
WO/2016/189412A1
A polymerization process for stable gas phase reactor start-up when making ethylene copolymers having relatively high molecular weight distribution and melt flow ratio.  
WO/2016/184884A1
A solid catalyst component for the polymerization of olefins comprising Mg, Ti and a an electron donor of formula (I) where independently, Z is a bridging group, the R2 groups, equal to or different from each other, are hydrogen or a C1-...  
WO/2016/186295A1
The present invention relates to a supported hybrid catalyst system, and a method for preparing a polyolefin by using the same. According to the present invention, the supported hybrid catalyst system can simultaneously carry out oligome...  
WO/2016/186287A1
The present invention relates to a catalytic system for an olefin oligomerization reaction and a method for olefin oligomerization and, more specifically, to a catalytic system for an olefin oligomerization reaction, which exhibits high ...  
WO/2016/186282A1
The present invention relates to a catalytic composition and a method for olefin oligomerization using the same, and the use of the catalytic composition according to the present invention is capable of simultaneously performing the olig...  
WO/2016/186291A1
The present invention relates to: a catalyst system for olefin oligomerization; and a method for oligomerizing olefins and, more specifically, to: a catalyst system for olefin oligomerization, enabling more effective preparation of α-ol...  
WO/2016/185310A1
A process for controlling the placement of alpha olefins within an ethylene copolymer. The process involves polymerizing ethylene and an alpha olefin in the gas phase while changing the breadth of control over the molar ratio of ethylene...  
WO/2016/182645A1
A process for separating components of a reactor off gas is provided. A related reactor system is also provided. The reactor system may include a high pressure tubular reactor and/or an autoclave reactor and may be used for the productio...  
WO/2016/183006A1
Catalyst support-activator for olefin polymerization catalysts, and processes for making, the support-activator comprising an intercalated, modified and calcined smectite clay comprising (a) pillars comprising aluminum and optionally: (i...  
WO/2016/181238A1
A fluid dynamic model having at least 5,000,000 cells of the portion of a gas phase reactor from the exit of the condenser to a half a reactor diameter above the bed plate is useful in determining the design of the bottom surface or supp...  
WO/2016/178245A1
A polypropylene or polyethylene cap composition comprising at least 94% by weight of polypropylene or polyethylene, 0.05 to 1% by weight of a slip and/or antiblocking agent comprising a mixture of linear saturated fatty amide(s) and glyc...  
WO/2016/179592A1
A method of forming a thermoformed article may include melt extruding polyethylene to form an extruded sheet. The rheological breadth parameter of the polyethylene may change by no more than about 5% after extrusion relative to the rheol...  
WO/2016/175942A1
An impact copolymer comprising a polypropylene comprising at least 50 mol% propylene, and having a molecular weight distribution (MwMALLS/Mn) greater than 10, a branching index (g') of less than 0.97, and a melt strength greater than 40 ...  
WO/2016/175427A1
The present invention relates to a method for preparing a super absorbent resin, the method comprising the steps of: a) preparing a hydrous gel polymer by means of thermopolymerizing or photopolymerizing a monomer composition comprising ...  
WO/2016/176135A1
Supported catalyst compositions, useful in olefin polymerization, and having improved flow properties are disclosed. The catalyst compositions may be characterized by low macro pore volume and high bulk density. Methods for preparing the...  

Matches 601 - 650 out of 28,756