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Matches 51 - 100 out of 28,756

Document Document Title
WO/2021/099123A1
A process for preparing a catalyst component comprising Mg, Ti, and at least an electron donor compound (ID) said process comprising two or more steps of reaction in which in a first step (a) carried out at a temperature ranging from 0 t...  
WO/2020/112483A8
A composition comprising polypropylene having a high melt strength suitable for an injection stretch blow molding (ISBM) process is provided. Such a composition includes a polypropylene (PP) copolymer having a branched structure. The PP ...  
WO/2021/100645A1
The present invention relates to polypropylene resin foam particles, the base resin of which has polypropylene resin as the main component, wherein the polypropylene resin foam particles are characterized in that: the polypropylene resin...  
WO/2021/099947A1
The present disclosure relates to a catalyst composition and a process for preparation thereof. The catalyst composition of the present disclosure is stable, and produces polyolefin having narrow molecular weight distribution during the ...  
WO/2021/085820A1
The present invention relates to a decrosslinked polyolefin resin for a cable filler, and a resin composition comprising same. Specifically, the present invention relates to a decrosslinked polyolefin resin, and a resin composition compr...  
WO/2021/083350A1
The present invention relates to a diimine metal complex represented by formula I, a preparation method therefor, and application thereof. The complex is used as a main catalyst in catalysts for olefin polymerization, and can achieve cat...  
WO/2021/085929A1
The present invention relates to an olefin-based polymer and a film prepared therefrom. According to an embodiment of the present invention, an olefin-based polymer, especially, a linear low-density polyethylene has a relatively wide dis...  
WO/2021/082278A1
Disclosed are a class of fluorine-containing α-diimine nickel complexes for preparing a polyolefin elastomer and intermediates thereof. The class of complexes have a single catalytic active center, the molecular weight of a polymer can ...  
WO/2021/083194A1
Disclosed is a catalyst for olefin polymerization, comprising a main catalyst and a cocatalyst; the main catalyst is a bisphenol metal complex represented by formula I, and the co-catalyst comprises an organoaluminum compound; in formula...  
WO/2021/083307A1
The present invention relates to a method for preparing a high viscosity index poly-α-olefin, comprising: α-olefin is subject to a polymerization reaction in the presence of a metallocene catalyst to obtain a poly-α-olefin, wherein th...  
WO/2021/083238A1
The present invention relates to a processing method for directly synthesizing a high-performance base oil by means of the polymerization of a low-carbon olefin. Specifically, disclosed is a method for directly synthesizing a high-perfor...  
WO/2021/083309A1
A metallocene compound having a structure shown by formula (I). A group connected to a bridging atom of the metallocene compound is an amine-substituted group and/or a metallocene-substituted group and/or a substituted metallocene group....  
WO/2021/083330A1
The present invention relates to an amino-imine metal complex represented by formula I and a preparation method and an application thereof. The complex is used as a main catalyst in catalysts for olefin polymerization, and can catalyze t...  
WO/2021/083207A1
Disclosed is a biphenol metal complex. The structure thereof is as represented by formula I, wherein R1 and R1' are each independently selected from hydrogen and a substituted or unsubstituted C1-C20 hydrocarbonyl; R3-R7 and R3'-R7' are ...  
WO/2021/085819A1
The present invention relates to decrosslinked polyolefin resin that has been recycled after crosslinking, and a resin composition comprising same. Specifically, the present invention relates to a recycled decrosslinked polyolefin resin ...  
WO/2021/034499A3
A new class of cost-effective carbon fiber precursors that comprise both hydrocarbon polymer and Pitch structural features in the same polymer structure to exhibit complementary advantages of both PAN- and Pitch-based carbon fiber precur...  
WO/2021/071242A1
The present invention relates to polypropylene particles and a method for preparing same, the polypropylene particles being formed from a polypropylene resin and having a melting index (M.I.) of 1000 g/10 min or more when the particles a...  
WO/2021/066579A1
The present invention provides a hybrid supported metallocene catalyst and a process for preparing a polyethylene copolymer using same, the hybrid supported metallocene catalyst being useful for preparing a polyethylene copolymer enablin...  
WO/2021/067007A1
Methods for producing polyethylene compositions having broader melt index ratio and narrower molecular weight distribution in high pressure multi-feed tubular reactors are provided. The methods are useful in multi-feed tubular reactors c...  
WO/2021/066398A1
The present invention provides: a pellet-type polypropylene resin composition exhibiting excellent heat resistance and oxidation stability, and exhibiting high fluidity without using a decomposition accelerator so as to enable fiber atte...  
WO/2021/034449A8
Methods of manufacturing highly crosslinked polymer particulate. The methods include positioning a granular polymeric material within a crosslinking apparatus and crosslinking the granular polymeric material with the crosslinking apparat...  
WO/2021/061478A1
Systems and methods of reducing heat exchanger fouling rate and of producing polyolefins are provide herein. In some aspects, the methods include providing a first gas stream comprising a gas and entrained fine polyolefin particles to a ...  
WO/2021/060908A1
The present invention provides a supported hybrid catalyst, and a method for preparing a polyolefin by using same, the supported hybrid catalyst comprising two or more types of transition metal compounds having a specific chemical struct...  
WO/2021/058607A1
The present invention relates to a process for the polymerization of olefin monomers in the presence of a catalyst system, using a tubular pre-polymerization reactor, wherein the tubular pre-polymerization reactor has a length L and the ...  
WO/2021/052733A1
A solid catalyst component for the polymerization of olefins comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being selected from 1,3 diethers (DE...  
WO/2021/050229A1
A method for minimizing the amount of catalyst inactivating agent that is present in a liquid fraction recovered from a slurry-based polymer production process, the liquid fraction comprising diluent used m the polymer production process...  
WO/2021/050231A1
Processes and apparatus for preparing bimodal polymers are provided. In some embodiments, processes include introducing a monomer, a first diluent, a catalyst, hydrogen, at a first hydrogen concentration, and optional comonomer, to a fir...  
WO/2021/047049A1
The present invention relates to a system and process for strengthening ethylene polymerization. The system comprises: a feeding unit; a reaction unit connected to the feeding unit; a micro-interface generator provided in the feeding uni...  
WO/2021/047920A1
An injection molded article comprising a propylene based composition comprising: Tl) from 90 wt % to 50 wt% of a propylene homopolymer; T2) from 10 wt % to 50 wt% of a polymer composition comprising: A) 5-35% by weight of a propylene hom...  
WO/2021/047054A1
A system and process for enhancing propylene polymerization. The system comprises: a polymerization reactor, a gas phase feeding unit, a liquid phase feeding unit, a polymeric molecular weight adjustment unit, a reflow unit, a cooling un...  
WO/2021/050227A1
A process and system for maintaining optimum polymerization production in a loop polymerization reactor by continuously and periodically obtaining polymerization results, such as melt index (MI), production rate and ash content of the po...  
WO/2021/050248A1
A colloidal suspension includes an organic phase and a complex of Formula I as precursor for Ziegler-Natta catalyst synthesis: XTiClp(OR1)4-p · YMg(OR2)q(OR3)t (I)· In Formula I, a molar ratio of X to Y (X/Y) is from 0.2 to 5.0, p is 0...  
WO/2021/047035A1
The present invention relates to an enhancing system and a process for preparing polyethylene on basis of a solution method, comprising: an ethylene storage tank, a reactor, a micro-interface generator, a killer, a desolvation tank, a re...  
WO/2021/050228A1
A process for maintaining an optimum polymerization process in a continuous loop polymerization reactor by driving a catalyst feed range set-point around a bad catalyst set-point range using a bad catalyst feed rate program to vary the c...  
WO/2021/041095A1
A bimodal polyethylene-based composition that is useful for making under film extrusion conditions a film that beneficially has both decreased water vapor transmission rate and decreased haze. The composition comprises an improved design...  
WO/2021/034457A1
Hydrocarbon wells including crosslinked polymer granules in sand control structures and/or methods of completing the hydrocarbon wells. The hydrocarbon wells include a wellbore that extends within a subsurface region and a downhole tubul...  
WO/2021/034452A1
Highly crosslinked polymer particulate and methods of manufacturing highly crosslinked polymer particulate. The highly crosslinked polymer particulate includes a plurality of crosslinked polymer granules. Each crosslinked polymer granule...  
WO/2021/034451A1
Hydrocarbon wells including crosslinked polymer granules as lost circulation material and methods of drilling the hydrocarbon wells. The hydrocarbon wells include a wellbore that extends within a subsurface region, a drilling rig, a dril...  
WO/2021/034450A1
Hydrocarbon wells including crosslinked polymer granules as a proppant, methods of forming the hydrocarbon wells, and methods of operating the hydrocarbon wells. The hydrocarbon wells include a wellbore that extends within a subsurface r...  
WO/2021/034449A1
Methods of manufacturing highly crosslinked polymer particulate. The methods include positioning a granular polymeric material within a crosslinking apparatus and crosslinking the granular polymeric material with the crosslinking apparat...  
WO/2021/034041A1
The present invention relates to an organic borate-based catalyst comprising a hydroxyl group-containing compound, a method for preparing an isobutene oligomer by using same, and an isobutene oligomer prepared thereby.  
WO/2021/018042A1
Disclosed are a catalyst system for olefin polymerization and use thereof. The catalyst system comprises a main catalyst and a cocatalyst. The cocatalyst comprises a twelve-membered ring compound represented by formula (M). The catalyst ...  
WO/2021/020436A1
Provided are: polymer ligands with which it is possible to obtain a metal organic framework having a certain thickness and strength while maintaining crystallinity, which had been difficult to accomplish in conventional metal organic fra...  
WO/2021/011632A1
This invention relates to a supported catalyst system comprising a first iron based catalyst, a second group 4 metal catalyst, a support material, and an activator; wherein the first catalyst is represented by Formula (I) and the second ...  
WO/2021/004684A1
The disclosure relates to a polymerization process. The polymerization process comprises polymerizing an olefin monomer and a comonomer in the presence of a polymerization catalyst in a polymerization step conducted in a polymerization r...  
WO/2021/006245A1
A method for producing ethylene according to the present invention includes: an ethylene production step for obtaining an ethylene-containing product that contains ethylene from raw ethanol containing waste-derived ethanol; and at least ...  
WO/2021/001200A1
The invention relates to an ethylene polymer comprising a low molecular weight component and a high molecular weight component, wherein - the ethylene polymer has a density of 955 to 977 kg/m3 and a viscosity value η100 of at most 1500 ...  
WO/2021/001855A1
The present invention relates to a new, improved and efficient process for synthesizing C2 (ethylene) bridged cyclopentadienyl ligand having formula I: and eventually forming the corresponding ansa-metallocene catalyst from the same; whi...  
WO/2020/262774A1
The present invention relates to a producing method for high-functional polybutene with a halogen component removed therefrom, a producing apparatus therefor, and polybutene produced thereby.  
WO/2020/263113A1
The present invention relates to a method of reducing polymer deposits on the internal surfaces of a reactor equipment, wherein the polymer is a by-product of the process of olefin oligomerization or is formed during the process of ol...  

Matches 51 - 100 out of 28,756