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WO/2012/054541A2 |
A method for controlling the physical state of an ultra-high molecular weight polymer to make the ultra-high molecular weight polymer suitable for further processing, and related polymers compositions methods and systems, wherein the met...
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WO/2012/052387A1 |
A catalyst system comprising the product obtained by contacting (a) a solid catalyst component containing Mg, Ti, halogen and at least an electron donor compound selected from diolesters of a specific formula (b) an alkylaluminum cocatal...
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WO/2012/053261A1 |
A method for producing ethylene-based polymer particles by homopolymerizing ethylene or copolymerizing ethylene and a C3-20 linear or branched α-olefin in the presence of an olefin polymerization catalyst containing: (A) micro-particles...
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WO/2012/052386A1 |
A process for the (co)polymerization of propylene carried out at a temperature ranging from 77 to 95°C in the presence of a catalyst comprising the product obtained by reacting: -an organo-aluminium compound, with -a solid catalyst comp...
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WO/2012/051268A1 |
A polyethylene production process, comprising contacting ethylene and a polymerization catalyst under suitable reaction conditions to yield a polymerization product stream, separating a light gas stream from the polymerization product st...
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WO/2012/050667A1 |
An elastomeric composition and method incorporating a hydrocarbon polymer modifier with improved permanence. The composition comprises elastomer, filler and silane- functionalized hydrocarbon polymer modifier (Si-HPM) adapted to couple t...
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WO/2012/049204A1 |
Automotive interior element comprising a polypropylene composition comprising (percent by weight): A) from 60% to 90% of a propylene homopolymer having: i) a polydispersity Index (P.I.) value of from 3.5 to 10.0; ii) a fraction insoluble...
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WO/2012/050658A1 |
A hydrocarbon polymer modifier (HPM) having high softening point and high aromaticity, is an interpolymer of (i) a piperylene component; (ii) an aromatic component; and (iii) a cyclic pentadiene component comprising a dicyclopentadiene f...
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WO/2012/048646A1 |
The present invention provides a new chromium catalyst and the use thereof in catalyzing the oligomerization and polymerization of alkenes. In particular, the catalyst of the present invention is a coordination compound composed of a tra...
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WO/2012/046443A1 |
This cyclic olefin copolymer comprises (A) one or more kinds of olefin-derived repeating units represented by formula (I), (B) a cyclic non-conjugated diene-derived repeating unit represented by formula (III), and (C) one or more kinds o...
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WO/2012/047517A2 |
A catalyst comprising a NCN pincer ligand group VI complex is capable of being used as an olefin polymerization or isomerization catalyst that does not require an expensive cocatalyst. The complex has the NCN pincer ligand in a trianioni...
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WO/2012/045288A1 |
The method of preparation of nucleated semi-crystalline polyolefin via coordination polymerization, wherein the nucleating agent is dosed in form of the suspension or the solution in a non-polar hydrocarbon solvent or in concentrated org...
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WO/2012/045782A1 |
The present invention relates to a polypropylene which has - a melt flow rate MFR(230°C, 2.16 kg) of at least 13 g/10 min, - an amount of xylene solubles XS of 6.0 wt% or less, and - a crystalline fraction, wherein at least 10 % of the ...
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WO/2012/041813A1 |
Extruded articles, particularly films, comprising an ethylene polymer obtained by a polymerization process carried out in the presence the products obtained by contacting the following components: (a) a solid catalyst component comprisin...
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WO/2012/040859A1 |
The present invention is directed to a method for preparing isobutene from a renewable source and their use in the preparation of renewable polymers. The invention also discloses purification of isobutene, selective removal of 1-butene, ...
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WO/2012/041017A1 |
The present invention provides a fluidized bed polymerization reactor, comprising: a tower body, provided therein with a liquid phase distributor and a gas phase distributor above the liquid phase distributor, so as to divide a reaction ...
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WO/2012/044504A1 |
A high pressure polymerization process to form an ethylene-based polymer comprises the steps of: A. Injecting a first feed comprising a chain transfer agent system (CTA system) and ethylene into a first autoclave reactor zone operating a...
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WO/2012/041944A1 |
Adducts comprising a MgC12, an alcohol ROH in which R is a C1 -C1O hydrocarbon group, present in a molar ratio with MgC12 ranging from 0.5 to 5 and less than 15% wt, based on the total weight of the adduct, of a metal salt of an aliphati...
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WO/2012/041811A1 |
A method for feeding an antistatic compound to a polymerization reactor comprising the steps of: a) dispersing, under mixing conditions, a catalyst powder and an antistatic compound in an oil, so as to form a suspension of catalyst powde...
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WO/2012/041810A1 |
A method for feeding an antistatic compound to a polymerization reactor, the method comprising the steps of: a) dispersing, under mixing conditions, a catalyst powder and an antistatic compound in a liquid medium, so as to form a suspens...
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WO/2012/044063A2 |
The present invention relates to a preparation method of a metallocene catalyst, and more specifically, to a preparation method of a hybrid supported metallocene catalyst, comprising the following steps: treating a support having a water...
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WO/2012/037781A1 |
Disclosed are two types of supported non-metallocene catalysts for polyethylene, preparation methods and uses thereof, as well as a polyethylene having ultra-low degree of branching and ultra-high molecular weight. One type of the suppor...
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WO/2012/040144A1 |
A unimodal polymeric resin having a density of from about 0.946 g/ml to about 0.97 g/ml and a zero shear viscosity of from about 8 x 102 Pa-s to about 6 x 104 Pa-s. A method comprising (a) providing a catalyst system comprising a half-sa...
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WO/2012/038465A1 |
The invention relates to a polymer including at least one first type of polymer chain, said chain including at least two identical or different blocks, said blocks including repeating units from the polymerization of styrene monomers, sa...
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WO/2012/040147A1 |
A catalyst system comprising a half-sandwich chromium complex, an activator support and an optional cocatalyst. A compound of formula Cp'Cr(C1)2(Ln), where Cp' is η5- C5H4CH2CH2CH=CH2 and Ln is pyridine, THF or diethylether. A compound ...
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WO/2012/034869A1 |
Process for producing polyethylene compositions, like LLDPE, MDPE or HDPE, with a high level of homogeneity which comprises the steps of a) preactivating the total amount of a Ziegler-Natta procatalyst with the total amount of a cocataly...
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WO/2012/036237A1 |
Provided are: a propylene resin sheet having superior shock resistance at ultra-low temperatures, flexibility, transparency, and the like, having a reduced variation in thickness when layered, and having been improved with respect to deg...
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WO/2012/035710A1 |
Provided is an alphaolefin polymer that satisfies the belowmentioned A-D: (A) the range of a stereoregularity index [mm] is 10-50 mol%; (B) the range of kinematic viscosity at 100°C is 200-10,000 mm2/s; (C) the proportion of dimer and t...
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WO/2012/036443A2 |
The present invention relates to a dinuclear metallocene compound having a novel structure able to provide diverse forms of selectivity and activity with respect to copolymers, and relates to a production method therefor as well as to a ...
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WO/2012/034357A1 |
The invention relates to a dialkoxyl magnesium carrier, which is a product produced by reflux reaction of magnesium, an alcohol and mixed halogenating agents under an inert atmosphere. The mixed halogenating agents are iodine and magnesi...
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WO/2012/033227A2 |
The invention relates to a catalyst for the polymerization of norbornene monomers containing transition metal complex (A) represented by formula (1); and a method for producing norbornene copolymers containing a monomer unit represented ...
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WO/2012/028591A1 |
Process for the preparation of a polyolefin polymer by continuously polymerizing one or more olefin monomers in suspension at temperatures of from 40°C to 120°C and pressures of from 0.1 to 10 MPa in the presence of a polymerization ca...
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WO/2012/030567A1 |
A method for making a support impregnated Ziegler-Natta-type catalyst precursor including at least two transition metals and a support material wherein the resulting catalyst precursor is free-flowing is provided. Also provided is a proc...
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WO/2012/028252A1 |
The present invention relates to a heterophasic polypropylene resin comprising a crystalline propylene homopolymer matrix (A) and an amorphous propylene copolymer phase (B) dispersed within the matrix having excellent mechanical properti...
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WO/2012/027139A2 |
This invention relates to a process to produce a poly(alpha-olefin)(alpha, internally unsaturated, nonconjugated olefin) comprising: contacting at least one renewable feedstream with at least one lower olefin in the presence of a metathe...
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WO/2012/025379A1 |
A solid catalyst component for olefin polymerization, and in particular for the preparation of LLDPE, comprising Mg, Ti, halogen and an electron donor compound (ID) belonging to cyclic ethers having 3-6 carbon atoms, characterized by hav...
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WO/2012/022127A1 |
The present invention relates to a catalytic composition for the polymerization of olefin. The composition comprises: at least one organic magnesium compound; at least one titanium compound; at least one hydroxyl compound; at least one o...
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WO/2012/021331A1 |
The present embodiment can teach a method of feeding to a materials processor a mixture containing an agglomerated drag reducer. The mixture is then homogenized to produce a remediated drag reducer. The maximum particle size diameter of ...
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WO/2012/018463A2 |
A polyalphaolefin polymer, having a kinematic viscosity at 100° C of 135 cSt or greater, is shear stable. The polymer either has not more than 0.5 wt% of the polymer having a molecular weight of greater than 60,000 Daltons, or after bei...
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WO/2012/016971A1 |
A process for continuously mixing at least two fluid streams and splitting the stream of the mixture into at least two partial streams, comprising a) providing streams of the at least two fluids via separated conduits; b) combining the s...
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WO/2012/017038A1 |
Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor of Formula (I) in which R, R1 and R4 groups, equal to or different from each other, are C1-C15 hydrocarbon groups and the R groups can be linked...
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WO/2012/017040A1 |
A catalyst component for the polymerization of olefins comprising Mg, Ti and at least two electron donor compounds, one of which (A) belonging to specific diolesters and the other electron donor compound (B) being selected from aromatic ...
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WO/2012/013794A1 |
The present invention relates to a process of preparing a polyolefin in a loop reactor by introducing anti-fouling agent through a sleeve provided around at least part of the shaft of the pump. Also, the invention relates to the use of a...
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WO/2012/013802A1 |
The present invention relates to a process for preparing catalyst slurry in a catalyst slurry preparation system and supplying catalyst slurry to an ethylene polymerization loop reactor wherein an accurate control of the pressure within ...
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WO/2012/013806A1 |
The present invention relates to a process of preparing a polyolefin in a loop reactor by introducing anti-fouling agent in by-pass pipes. Also, the invention relates to the use of anti-fouling agent to prevent blockage by feeding the an...
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WO/2012/013805A1 |
The present invention relates to a process of preparing a polyethylene in a loop reactor in the presence of antifouling agent comprising the steps of: a) feeding into said loop reactor diluent, monomers, optionally hydrogen, and optional...
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WO/2012/013807A1 |
The present invention relates to a method for consecutively producing at least two different polyethylene resins in one slurry loop reactor, comprising producing a first polyethylene resin in the presence of a Ziegler-Natta and/or a Chro...
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WO/2012/010476A1 |
A composition is disclosed comprising a polyethylene powder having: (a) a specific density of 930 kg/m3 or less; (b) a melt index MI2 greater than 0.5 g/10min; (c) a ratio of HLMI/MI2 of less than 25, where HLMI is high load melt index m...
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WO/2012/007441A1 |
The present invention relates to a modified polymer produced by grafting a compound thereto, said compound including at least one group Q and at least one group A bonded together by at least one, and preferably only one, spacer group Sp,...
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WO/2012/007430A1 |
The invention refers to a process for preparing a Group 2 metal/transition metal olefin polymerisation catalyst component in particulate form free of conventional phthalate electron donors and the use thereof in a process for polymerisin...
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