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Matches 1 - 50 out of 27,858

Document Document Title
WO/2019/173030A1
Methods of preparing a polymerization reactor for startup including the step of providing an alkyl solution to the polymerization reactor to remove moisture from the seed bed followed by additional step(s) are provided herein.  
WO/2019/168729A1
A method of determining multimodal polyethylene quality comprising the steps of (a) providing a multimodal polyethylene resin sample; (b) determining, in any sequence, the following: that the multimodal polyethylene resin sample has a me...  
WO/2019/162456A1
The invention provides a process for separating hydrogen from a gaseous feed stream in a polymerisation process, comprising the steps i) polymerising an olefin monomer and optionally at least one olefin comonomer, in the presence of a so...  
WO/2019/162445A1
The invention provides a process for separating hydrogen from a gaseous feed stream in a polymerisation process, comprising the steps i) polymerising an olefin monomer and optionally at least one olefin comonomer in the presence of a sol...  
WO/2019/162448A1
The invention provides process for separating hydrogen from a fluid feed stream in a polymerisation process, comprising the steps i) polymerising an olefin monomer and optionally at least one olefin comonomer in the presence of a solvent...  
WO/2019/156482A1
The present invention relates to a method for preparing a supported hybrid metallocene catalyst and, more particularly, to a method in which a first metallocene compound is supported, a promoter is supported by means of split addition, i...  
WO/2019/156802A1
Methods and systems for solution polymerization. The method can include forming a first mixture stream consisting essentially of at least one catalyst and a process solvent, and forming a second mixture stream consisting essentially of a...  
WO/2019/154756A1
A gas-phase polymerization reactor for the gas-phase polymerization of olefins comprising at least one polymerization zone which is equipped with a recycle line for withdrawing reaction gas from the reactor, leading the reaction gas thro...  
WO/2019/157162A1
This invention relates to a supported catalyst system and process for use thereof. In particular, the catalyst system includes a benzindenyl transition metal complex, a support material and an activator. The catalyst system may be used f...  
WO/2019/157002A1
Low molecular weight, highly branched polyolefins are provided. Also provided are catalyst-mediated methods of making the low molecular weight, highly branched polyolefins and a catalyst system for carrying out the methods. The catalyst ...  
WO/2019/151483A1
Provided is a method for manufacturing alkoxy magnesium by intermittently adding metal magnesium a plurality of times to an alcohol in a reaction system, wherein: among the second and subsequent additions of metal magnesium to the reacti...  
WO/2019/103555A3
Provided are a polypropylene resin composition for injection foaming and a molded article manufactured therefrom, wherein the polypropylene resin composition has excellent lightweightness due to foaming and excellent mechanical propertie...  
WO/2019/129502A1
A metal complex of the formula (1) TCyLMZp (1), wherein M is a group 4 metal, Z is an anionic ligand, p is number of 1 to 2, preferably 2, TCy is a thiophene fused cyclopentadienyl-type ligand of the formula (2).  
WO/2019/129650A1
The present invention relates to a process for producing of solid particulate olefin polymerisation catalyst or catalyst carrier comprising forming a solution of the catalyst or a catalyst carrier in a solvent, subjecting the solution in...  
WO/2019/132450A1
The present invention relates to a novel supported catalyst containing a metallocene compound, the catalyst having excellent polymerization activity, and to a method for preparing polypropylene by polymerizing propylene in the presence o...  
WO/2019/133705A1
The present disclosure relates to dual-headed organoaluminum compositions having the formula (I) and processes to prepare the same. In at least one aspect, the compositions having the formula (I) may be used during olefin polymerization.  
WO/2019/132346A1
The present invention relates to a method for preparing a supported metallocene catalyst, and a method for preparing a polypropylene by using the catalyst prepared thereby. According to the present invention, provided is a supported meta...  
WO/2019/132687A1
A metal complex of the formula (1) TCyLMXp (1), wherein M is a group 4 metal Z is an anionic ligand, p is number of 1 to 2, preferably 2, TCy is a thiophene fused cyclopentadienyl-type ligand of the formula (2) wherein R1 and R2 being...  
WO/2019/122016A1
A process for the preparation of a solid olefin polymerisation catalyst or a solid olefin polymerisation catalyst component comprising the steps of: (a)forming a liquid/liquid emulsion of (i) a first organic liquid comprising at least on...  
WO/2019/124021A1
A method for producing a solid catalyst component includes bringing a magnesium compound, a titanium halide compound, and one or more internal electron donor compounds into contact with each other to effect a reaction; washing the result...  
WO/2019/123028A1
The present invention provides a metal-ligand complex, a catalyst composition comprising the same for ethylene-based polymerization, and a method for preparing an ethylene-based polymer by using same. The metal-ligand complex of the pres...  
WO/2019/118755A1
This disclosure relates to a high molecular weight polypropylene-based composition with high nucleation density and short crystallization half time. The composition may contain up to about 2 wt% ethylene.  
WO/2019/115450A1
Purification of a gas stream for polyolefin synthesis. Preferred gas is ethylene or propylene. Impurities are withdrawn when passing through an inorganic adsorbent, and then alkynes are selectively hydrogenated over a dedicated catalyst ...  
WO/2018/208398A8
A composition suitable for a film having a 1% secant flexural modulus (MD or TD) of at least 55,000 psi and a dart drop impact of at least 500 g is provided. The composition comprises a broad molecular weight distribution polypropylene w...  
WO/2019/108407A1
The present disclosure relates to asymmetric ansa-metallocene catalyst compounds that include at least one indenyl ligand substituted at the 3-position with a C3-C40 α-branched alkyl, such as 1-methylethyl, 1-methylpropyl, 1-methylbutyl...  
WO/2019/105667A1
The present invention relates to a method of producing a magnesium compound represented by the following formula: Mg(OR1)2-n(Modifier)n wherein R1 is CmH2m+1, where in m is an integer from 2 to 10, and n is o - 2 wherein the method compr...  
WO/2019/075331A3
Isobutylene copolymer includes repeat units derived from isobutylene and one or more comonomers selected from isoprene, butadiene, cyclopentadiene, dicyclopentadiene, limonene, substituted styrenes, and C4 to CIO dienes other than isopre...  
WO/2019/103185A1
An embodiment of the present invention provides a method for preparing functionalized polyethylene wax comprising the steps of: (a) stirring and pyrolyzing polyethylene, which has a melting point of 110℃ or lower and a molecular weight...  
WO/2019/103184A1
An embodiment of the present invention provides a method for preparing functionalized polyethylene wax comprising the steps of: (a) stirring and pyrolyzing polyethylene, which has a melting point of 110℃ or lower and a molecular weight...  
WO/2019/103336A1
Provided are an olefin-based polymer and a film. The olefin-based polymer has a melt tension (MT) of 80 mN or more and a velocity at break of 200 mm/s or more.  
WO/2019/103182A1
An embodiment of the present invention provides a method for preparing polyethylene wax comprising the steps of: (a) stirring and pyrolyzing polyethylene, which has a melting point of 110℃ or lower and a molecular weight distribution (...  
WO/2019/099138A1
Methods of online cleaning of heat exchangers at elevated temperatures are provided. Cleaning of the heat exchanger is achieved through an increasing heat exchanger effluent temperature of a polymer solution together with operating under...  
WO/2019/099291A1
Methods for synthesizing a water-soluble titanium-silicon complex by partial hydrolysis are disclosed herein. The titanium-silicon complex can be utilized to produce titanated solid oxide supports and titanated chromium supported catalys...  
WO/2019/099292A1
A method of preparing a catalyst comprising a) contacting a titanium- containing compound, a solvating agent comprising an alpha, beta- unsaturated organic compound with a carbonyl or carboxyl group, and a solvent to form a solution; b) ...  
WO/2019/099134A1
In a gas phase fluidized bed polymerization process for the production of polyolefin polymers, such as polyethylene polymers or polypropylene polymers, loss of ethylene or propylene accompanying inert gas purging is reduced by passing an...  
WO/2019/096557A1
The present invention relates to a method for improving the cooling capacity of a gas solids olefin polymerization reactor by splitting the fluidization gas and returning part of the fluidization gas to the reactor into the bottom zone o...  
WO/2019/099116A1
The present disclosure provides catalyst systems having a bridged metallocene compound and a transition metal pyridyldiamide compound for use in alkene polymerization to produce multimodal polyolefins, such as multimodal ethylene, propyl...  
WO/2019/096556A1
The present invention relates to a process for polymerizing olefin monomer(s) in a gas solids olefin polymerization reactor wherein the fluidization gas is split and returned to the reactor into the bottom zone of the reactor and directl...  
WO/2019/099250A1
This invention relates to catalyst systems comprising a catalyst compound having a bridged group 4 metal metallocene (where the bridge preferably contains an (Me2Si)2 group, an activator, and a support material. In some embodiments, the ...  
WO/2019/093789A1
The present invention relates to a homopolypropylene resin for a non-woven fabric, and can produce a high-strength non-woven fabric, which is softer than an existing product and does not tear easily due to high toughness, by optimizing t...  
WO/2019/094347A1
A process of preparing a solid catalyst component for the production of polypropylene includes a) dissolving a halide-containing magnesium compound in a mixture, the mixture including an epoxy compound, an organic phosphorus compound, an...  
WO/2019/093393A1
Provided are: an olefin-based resin composition that enables production of a molded article where coloring is suppressed and excellent transparency is exhibited; a manufacturing method for such a resin composition; and a molded article o...  
WO/2019/090883A1
A method for preparing polypropylene or a propylene-ethylene copolymer, comprising: (1) subjecting a liquid phase propylene together with a polymerization catalyst to a prepolymerization of propylene, into a feedstock slurry containing a...  
WO/2019/093364A1
The present invention pertains to a catalyst for olefin polymerization that includes a metal complex indicated by general formula (C1) and a production method that uses the metal complex as a polymerization catalyst and produces: a copol...  
WO/2019/094216A1
A process of preparing a solid catalyst component for the production of polypropylene includes a) dissolving a halide-containing magnesium compound in a mixture, the mixture including an epoxy compound, an organic phosphorus compound, an...  
WO/2019/093630A1
Disclosed is a method using a metallocene catalyst system so as to control the polymer structure of a diene-modified polypropylene through process simplification, thereby being capable of preparing a hyperbranched polypropylene resin hav...  
WO/2019/090882A1
Disclosed is a method for the homopolymerization and the random copolymerization of propylene, comprising: (1) subjecting a liquid phase propylene comprising a polymerization catalyst to a prepolymerization of propylene, to obtain a feed...  
WO/2019/089111A1
A process of polymerizing olefins comprising combining propylene with a polymerization catalyst, hydrogen, and at least one external electron donor, such as at least one amino-silane donor, to form polypropylene in a first polymerization...  
WO/2019/090068A1
The invention relates to treatment of waste with one or more microorganisms for the purposes of, including but not limited to, degrading waste, bioremediation of waste, enhancing waste stabilization, reducing contaminants in waste, reduc...  
WO/2019/086987A1
This invention relates to a solution polymerization process that allows two different types of polyethylene to be produced at the same time. The different polyethylenes may have substantially different densities.  

Matches 1 - 50 out of 27,858