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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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WO/2012/007427A1 |
The invention refers to a process for preparing a Group 2 metal/transition metal olefin polymerisation catalyst component in particulate form for polymerising olefins, especially ethylene or propylene or comonomers thereof.
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WO/2012/009369A1 |
Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise a transition metal complex, an optional activator, and an optional support. The complex is the reaction product of a Group 3-6 transition metal source, an op...
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WO/2012/004154A1 |
The present invention relates to production of polymer, and in particular provides an interlock for use in a process for production of a polymer in a reactor, which process comprises: a. polymerising a monomer and optionally a comonomer ...
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WO/2012/005432A2 |
The present invention relates to a photoreactive polymer which can be preferably used for the alignment layer of a liquid crystal display due to the good alignment stability and thermal stability thereof, as well as due to good liquid cr...
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WO/2012/005519A2 |
Disclosed is a method for polymerizing alpha-olefins with utilizing a three-phase system, using a three-phase fluidized bed reactor, wherein alpha-olefins are efficiently and economically polymerized by agitating multiphase reaction medi...
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WO/2012/006387A1 |
Provided are processes and systems for recovering hydrocarbons in a vent stream from a polymerization process. The methods and systems may include the recovery of an olefin monomer from a polymerization vent gas using ethylene refrigerat...
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WO/2012/004153A1 |
The present invention relates to the degassing of polymer powder, and in particular to an interlock for use in a process for degassing of a polymer powder in a degassing vessel, which interlock comprises: 1. measuring the temperature of ...
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WO/2012/003144A1 |
Disclosed is an adhesive composition. The adhesive composition comprises a maleated polyolefin and an LLDPE. The LLDPE is made by a Ziegler-Natta catalyst which comprises a MgCl2 support, a Ti(IV) complex, and an electron donor. The cata...
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WO/2012/002772A2 |
The present invention relates to an olefin-based polymer which exhibits superior processability and superior adhesive properties, and which therefore can be desirably used as a hot-melt adhesive (HMA) or the like. The present invention a...
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WO/2012/001051A1 |
A process for the preparation of a random propylene copolymer comprising polymerising propylene and at least one C2-10 alpha olefin (especially ethylene) in the presence of a catalyst; wherein said catalyst comprises: (i) a complex of fo...
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WO/2010/139720A9 |
The present invention pertains to a process for manufacturing an ultra-high molecular weight polyethylene, wherein olefin monomers are contacted with a catalytic system under polymerisation conditions under formation of a polyethylene, w...
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WO/2012/000022A1 |
The invention relates to a process for increasing the melt flow index of a propylene polymer, the process comprising melt mixing the propylene polymer in the presence of aqueous hydrogen peroxide.
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WO/2012/000956A1 |
Process for producing a prepolymerised metallocene catalyst system comprising a step of prepolymerising in a continuously operating prepolymerising reactor a solid metallocene catalyst system which does not comprise any catalytically ine...
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WO/2011/160936A1 |
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 1,3-diethers; (b) an alkylaluminum cocatalyst; and (c) an est...
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WO/2011/161412A1 |
A process for preparation of silica xerogel catalyst support particles having high surface areas involves ageing a silica hydrogel at a pH from 3 to 5 and at a temperature of 45°C or more. The ageing at low pH leads to a silica gel whic...
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WO/2011/162544A2 |
Disclosed is a polymerization reactor for the preparation of a superabsorbent polymer, and a method for preparing a superabsorbent polymer using the same. More particularly, the polymerization reactor may evenly supply polymerization ene...
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WO/2011/157582A1 |
A catalyst component for the polymerization of olefins obtained by: (a) reacting in a inert hydrocarbon suspension medium a Mg(OR1)(OR2) compound, in which R1 and R2 are identical or different and are each an alkyl radical having 1 to 10...
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WO/2011/159468A2 |
Provided herein are vinyl ether end-functionalized polyolefins and methods for producing the same.
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WO/2011/156313A1 |
Disclosed is a novel composition comprising (a) 50-98 parts of hydrocarbon oil, (b) 1-40 parts of emulsifier, and (c) 1-10 parts of a non-curing hydrocarbon polymer. Aiso disciosed is a method of reducing adhesion to the surface of equip...
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WO/2011/156110A2 |
Provided herein are methods for the preparation of telechelic polyolefins via polymerization reaction with a terpene initiator.
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WO/2011/155753A2 |
The present invention provides a clay metal composite obtained by modifying an organic metal compound, using clay including an organic reforming agent a clay-supported nickel diimine catalyst including a nickel diimine catalyst that is s...
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WO/2011/155999A1 |
An olefin polymerization process comprises gas-phase polymerization of at least one olefin monomer in more than one polymerization zones in one or more polymerization reactors using a high activity catalyst injected in the front end of t...
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WO/2011/154841A2 |
Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a bridged cyclopentadienyl complex that incorporates a monoanionic hydroxylamido or hydrazido ligand fragment. Suitable complexes have the s...
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WO/2011/149153A1 |
The present invention relates to a production method for a spherical carrier for an olefin polymerization catalyst and to a solid catalyst produced using the carrier as well as to a propylene polymer produced using the solid catalyst. Pr...
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WO/2011/147539A1 |
The invention is directed to a process for the gas phase polymerisation of one or more olefin monomers in a fluidised bed reactor in a dry mode or in a (super) condensed mode with a gas stream comprising an inert gas characterised in tha...
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WO/2011/149656A2 |
The present invention relates to solid catalyst components comprising a reaction product of a titanium compound, a magnesium compound, an alcohol, an aluminum alkoxide, a siloxane mixture, and a maleate derivative; and catalyst systems c...
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WO/2011/148586A1 |
The disclosed terminally unsaturated polyolefin fulfills (1) to (4) below. (1) The meso pentad fraction [mmmm] of propylene chain units or butene-1 chain units is 20-80%. (2) The number of terminal vinylidene groups per molecule is 1.3-2...
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WO/2011/146334A1 |
Techniques and systems for producing a polyolefin using reactors in series are described. Described embodiments include techniques and systems for polymerizing a monomer in a first polymerization reactor to form a first polyolefin, disch...
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WO/2011/142735A1 |
The present techniques relates generally to polyolefin catalysts and, more specifically, to preparing a precursor compound for an unsymmetric metallocene catalyst, for using the precursor compound to prepare catalysts, and for employing ...
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WO/2011/142384A1 |
Disclosed is a method for producing a methacrylic polymer that satisfies the formula. The method comprises a step (a) for obtaining a first syrup by supplying methyl methacrylate and, if desired, another monomer containing an alkyl (meth...
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WO/2011/138214A1 |
Process for the preparation of a solid catalyst system (CS) comprising the steps of preparing a liquid clathrate (LC) comprising (a) a lattice (L) being the reaction product of (i) aluminoxane (A), (ii) an organometallic compound (O) of ...
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WO/2011/138209A1 |
Process for the preparation of a solid olefin polymerisation catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (lUPAC 2007) in the form of solid particles comprising the s...
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WO/2011/138212A1 |
Process for the preparation of a solid catalyst system comprising the steps of generating an emulsion by dispersing a liquid clathrate in a solution wherein (i) the solution constitutes the continuous phase of the emulsion and (ii) the l...
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WO/2011/138211A1 |
Process for the preparation of a solid olefin polymerisation catalyst system, comprising an organometallic compound of a transition metal of Group 3 to 10 of the Periodic Table (IUPAC 2007) in the form of solid particles comprising the s...
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WO/2011/135763A1 |
A resin fine powder which consists of a 4-methyl-1-pentene polymer that exhibits a limiting viscosity [η] of 1.0×10-2 to less than 3.0dl/g as determined in decalin at 135°C and which has a median particle diameter [D50] of 1.0×10-1 t...
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WO/2011/135004A2 |
A solid, particulate catalyst comprising: (i) a complex of Formula (I), wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from -R'2C-, -R'2C-CR'2-, -R'2Si-, -R'2Si-SiR'2-, -R'2Ge-, wherein each ...
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