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Matches 851 - 900 out of 20,117

Document Document Title
WO/2015/059280A1
The invention relates to a process for the preparation of a particulate ultra high molecular weight polyethylene (pUHMWPE) copolymer, comprising the steps of preparing a magnesium containing carrier, loading the carrier with a organometa...  
WO/2015/057001A1
Disclosed are a novel structure of a transition metal compound having a heteroatom introduced thereinto, a catalyst composition comprising the same, and a method for preparing a polymer using the same. The transition metal compound accor...  
WO/2015/055392A1
Polyethylene composition of Raised Temperature Resistance, having the following features: 1) density from 0.935 to 0.945 g/cm3; 2) melt flow index MIF from 10 to 18 g/10 min; 3) melt flow index MIP from 1 to 2.5 g/10 min; 4) ratio MIF/MI...  
WO/2015/055394A1
A polyethylene composition having density from 0.943 to 1.1 g/cm3, comprising: A) carbon black, or a UV stabilizer, or a mixture of carbon black and a UV stabilizer; B) a polyethylene comprising copolymers of ethylene with 1-alkenes, or ...  
WO/2015/055137A1
The present invention provides a catalyst component for olefin polymerization and a preparation method thereof, and a catalyst for olefin polymerization and an application thereof. The catalyst component for olefin polymerization compris...  
WO/2015/054758A1
The present invention relates to the preparation of bisupported Ziegler-Natta catalysts having a spherical morphology for the synthesis of polyolefin nanocomposites, in particular polypropylene, with high rigidity and thermal stability. ...  
WO/2015/057045A1
The invention relates to the use of coconut shell powder with wet starch and an oxodegrading additive, in the production of composites of thermoplastic polymer systems of any type, for producing biodegradable foamed materials for packing...  
WO/2015/054951A1
An internal electron donor compound for preparing α-olefin polymerization catalyst component, comprising two kinds of electron donors; the proportion of the two kinds of electron donors in the compounding preparation of the catalyst is ...  
WO/2015/055136A1
Spherical carriers for an olefin polymerization catalyst, catalyst components, a catalyst, and preparation methods therefor are disclosed. The method for preparing spherical carriers comprises the following steps: (1) reacting, in the pr...  
WO/2015/052184A1
A catalyst system comprising: a) a metal complex of the formula CyLMZp, wherein M is a group 4 metal Z is an anionic ligand, p is number of 1 to 2, preferably 2 Cy is a cyclopentadienyl-type ligand and, L is a ligand of the formula (A) w...  
WO/2015/043526A1
Disclosed is a catalyst composition for olefin polymerization, comprising the following components: a. a solid catalyst component, containing magnesium, titanium, halogen, and at least one internal electron donor compound containing lone...  
WO/2015/046931A1
The present invention relates to a method for preparing an olefin-based polymer, comprising a step of polymerizing an olefin-based monomer in the presence of a catalytic composition comprising cis-isomers and trans-isomers of a transitio...  
WO/2015/046930A1
The present specification relates to a catalytic composition and a method for preparing a polymer including the same.  
WO/2015/046995A1
The present invention relates to a polyolefin having a molecular weight distribution of 1.5 to 3.0, and a branch gradient number (BGN) value of 0.01 to 1.0. According to the present invention, it is possible to provide a polyolefin havin...  
WO/2015/046932A1
The present invention relates to an olefin-based polymer which comprises an elution temperature 1 (Te1) and an elution temperature 2 (Te2) constituting olefin-based polymer elution temperatures in a temperature range of between -20 and 1...  
WO/2015/047911A1
A catalyst composition may include a precontacted mixture of an olefin polymerization catalyst and an agent including an ammonium salt. The catalyst activity of the catalyst composition in the presence of water may be greater than if no ...  
WO/2015/046705A1
A transition metal compound of a novel structure, a catalyst composition containing the same, and a method for preparing a polymer by using the same are disclosed in the present specification.  
WO/2015/047031A1
The present invention relates to a polypropylene preparation method and polypropylene obtained therefrom and, more specifically, to a polypropylene preparation method using a catalyst containing a novel metallocene compound having excell...  
WO/2014/120494A9
This disclosure is directed to processes for producing catalyst compositions having more consistent properties and improved flowability. The processes may involve combining, at a controlled temperature of 30°C or higher, a metal carboxy...  
WO/2015/042045A1
A polyolefin manufacturing system and method including polymerizing olefin in a first reactor to form a polyolefin, transferring the polyolefin to a second reactor, polymerizing olefin in the second reactor, and discharging a product pol...  
WO/2015/036296A1
The present invention relates to a process for improving cleaning and/or drying of a polymerisation reactor by adding a compound that reacts with the catalyst poisons to scavenge it.  
WO/2015/032726A1
Disclosed are emulsion polymerization methods of at least one ethylenically unsaturated monomer conducted in the presence of an aqueous phase comprising a water soluble chitosan salt and at least one co-stabilizer. Also disclosed is an a...  
WO/2015/032370A1
The polyolefin powder contains particles with fluffy morphology. The method of preparation of polyolefin powder is carried out by the coordination polymerization of 1-olefins on the thermally-treated Ziegler-Natta precatalyst activated b...  
WO/2015/028595A1
The invention relates to a metallocene complex according to formula (1) 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, k is...  
WO/2015/030489A1
Disclosed are an apparatus and a method for removing halogens generated during the preparation of polybutene, which are capable of improving the utilization of polybutene and light polymers by removing halogen components contained in the...  
WO/2015/030355A1
A polypropylene resin for a protective film according to the present invention has an ethylene content of 10-20 wt% in the polypropylene resin, wherein the ratio (a/b) of the ethylene content to an ethylene content in a solvent extract (...  
WO/2015/024517A1
The present invention relates to a bimetallic catalyst for olefin polymerization, a preparation method therefor, and the application thereof in catalysis for olefin polymerization. The catalyst is a transitional bimetallic complex of the...  
WO/2015/026731A1
The instant invention provides a method for polymerizing one or more ethylene-based polymers. The method for polymerizing one or more ethylene-based polymers according to the present invention comprises the following steps: (1) selecting...  
WO/2015/024088A1
The present invention relates to a process for modifying poly(propene) with control over quantity, size and configuration of branches, comprising the steps of (A) preparing a masterbatch of bis(sulphonazide) (BSA) by means of the dispers...  
WO/2015/022025A1
The present invention relates to a process for the introduction of liquid feeds to a polymerisation process, and in particular provides a process for the introduction of a fresh feed selected from fresh comonomer and fresh inert hydrocar...  
WO/2015/021948A1
An agent for elimination of formation of polyolefin powder fouling on walls of gas-phase polymerization reactors and their recycles and for preparation of a nucleated polyolefin directly during polymerization of 1-olefins on Ziegler-Natt...  
WO/2015/016423A1
The present invention relates to a novel metallocene compound, a catalyst composition comprising same, and a method for producing olefin polymer by means of the catalyst composition. The metallocene compound and the catalyst composition ...  
WO/2015/016577A1
Disclosed are a device and a method for manufacturing polybutene continuously by removing halogen acid, which is included in a reaction raw material, by adsorbing the halogen acid using an adsorbent and then re-introducing the reaction r...  
WO/2015/016422A1
The present invention relates to a novel metallocene compound, a catalyst composition comprising same, and a method for producing olefin polymer by means of the catalyst composition . The metallocene compound and the catalyst compound co...  
WO/2015/011404A1
An alkoxysilane-terminated hydrocarbon polymer of formula (1): Formula (1) in which: - is a double or single bond; - Each of R2, R3, R4 and R5 is H, a halogen, an alcoxycarbonyl or an alkyl, - m and p are each from 0 to 5, - each of R an...  
WO/2015/012963A1
A method is provided for polymerizing an olefin monomer in a reactor with a highly active polyolefin polymerization catalyst system. The method includes introducing a catalyst system comprising a catalyst and a catalyst activator into th...  
WO/2015/009473A1
This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound having at least one arenyl ligand substituted with: 1) a cyclopropyl group and, optionally, 2) at at least one other group, such as a hydroc...  
WO/2015/007828A1
Molecular precursor chromium compounds and chromium on silica catalyst precursors suitable for use in producing chromium on silica catalysts are disclosed. The molecular precursor compounds can be chromium(II) and/or chromium(III) and/or...  
WO/2015/009480A1
This invention relates to a process to produce propylene polymer using a bridged hafnium transition metal metallocene catalyst compounds having two indenyl ligands substituted at the 4 positions with a C1 to C10 alkyl, where the 3 positi...  
WO/2015/009479A1
This invention relates to novel bridged a hafnium transition metal metallocene catalyst compounds having two indenyl ligands substituted at the 4 positions with a C1 to C10 alkyl, where the 3 positions are hydrogen (assuming the bridge p...  
WO/2015/007553A1
Polyisobutylene having a total percentage of vinylidene double bonds of more than 50 mol.% and a number average molecular weight of 500 to 10,000 daltons, wherein at least 10% of all the vinylidene double bonds in the polyisobutylene are...  
WO/2015/009484A1
Methods for the preparation of fluorided-chlorided silica-coated alumina activator-supports are disclosed. These comprise (a) calcining a silica-coated alumina at a peak calcining temperature to produce a calcined silica-coated alumina; ...  
WO/2015/009470A1
This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound that is asymmetric having two non-identical indenyl ligands with substitution at R2 having a branched or unbranched C1-C20 alkyl group subst...  
WO/2015/009472A1
This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound having two indenyl ligands with identical substitution including, for example, cyclopropyl groups and substituted phenyl groups at the 2 and...  
WO/2015/007135A1
A supported catalyst for olefin polymerization, a preparation method therefor and the use thereof in the production of olefin homopolymers and olefin copolymers. The catalyst mainly comprises: a porous support A, a magnesium-containing s...  
WO/2015/009656A1
A sulfonated polyethylene is achieved where a polymethylene backbone with substituted methylene units having one or two sulfonic acid groups or salts of the sulfonic acid groups periodically, quasiperiodically, or quasirandomly separated...  
WO/2015/009471A1
This invention relates to a novel group 4 transition metal metallocene catalyst compound that is asymmetric having two non-identical indenyl ligands with substitution at R2 having a branched C1-C20 alkyl group, R8 having a linear alkyl g...  
WO/2015/005287A1
Provided are novel ultra-high-molecular-weight polyethylene particles exhibiting high crystallinity and a high melting point that can provide a molded body having superior wear resistance, heat resistance, and high mechanical strength. T...  
WO/2015/002835A1
A system and method for a first reactor to produce a transfer slurry having a first polyolefin polymerized in the first reactor, a heat-removal zone to remove heat from the transfer slurry, and a second reactor to receive the transfer sl...  
WO/2014/209930A1
The instant invention provides a polyethylene composition and process for polymerizing the same. The polyethylene composition according to the present invention comprises the polymerization reaction of ethylene and optionally one or more...  

Matches 851 - 900 out of 20,117