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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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WO/2011/136492A2 |
Disclosed is a highly productive polymerization method of alpha-olefins, using an internal-circulation-type fluidized bed polymerization reactor. The gas-phase polymerization method of alpha-olefins includes: supplying a circulating gas ...
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WO/2011/134797A1 |
The present invention relates to a process for the continuous transition between two different and compatible polymerisation catalysts.
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WO/2011/130822A1 |
Ethylene is selectively oligomerized in a continuously stirred tank reactor (CSTR) that is preferably operated in an isothermal manner using a chromium catalyst. The undesired formation of by-product polyethylene is mitigated by contacti...
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WO/2011/133005A2 |
The present invention relates to a method of producing a catalyst composition and an olefin polymer using the composition, and more particularly, to a method of producing a novel catalyst composition including at least 2 types of catalys...
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WO/2011/131033A1 |
A catalyst component for olefin polymerization reaction and a catalyst comprising same are provided. The catalyst component comprises magnesium, titanium, halogen and electron donor, wherein the electron donor is selected from at least o...
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WO/2011/130415A1 |
A process for making a Ziegler-Natta-type catalyst precursor including contacting a Group 4 metal compound with one or more Titanium compounds selected from the group of TiCl3 (A1-activated or hydrogen-reduced), and Ti(OR)4 where R is et...
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WO/2011/129593A2 |
The present invention relates to a method for preparing polypropylene, comprising a step of polymerizing propylene in the presence of a catalyst containing a transition metal compound having a novel structure. As the method for preparing...
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WO/2011/129589A2 |
The present invention relates to a novel ligand and a transition metal complex prepared using same, the novel ligand being derived from a tetrahydroquinoline derivative, and having a condensed ring formed by an amido ligand and ortho-phe...
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WO/2011/129592A2 |
The present invention relates to a supported catalyst for polymerizing olefin that is supported by a transition metal compound having a novel structure and a cocatalyst compound, and to a method for preparing a polyolefin using same. The...
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WO/2011/126029A1 |
A polyethylene resin molding material for a lid of a container for carbonated beverages and the like, which has excellent high speed moldability, high fluidity, stiffness, impact resistance, durability, heat resistance, lubricity, low sm...
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WO/2011/127339A1 |
Catalysts useful for polymerizing olefins are disclosed. The catalysts comprise an activator and a Group 4 transition metal complex which comprises at least one monoanionic R1N-XR2 ligand, where X is O or S, and each of R1 and R2 is inde...
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WO/2011/126988A2 |
A process for producing an olefm-based polymer in a polymerization reactor including a fluidized bed, a disengaging section and a neck connecting the bed and disengaging section, at least one monomer, in the gas phase, in the presence of...
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