| Document |
Document Title |
|
WO/2009/057747A1 |
Disclosed are: an olefin polymerization catalyst which is free of any polyfunctional aromatic compound, and which has a large particle diameter; and a solid titanium catalyst component (I) for use in the production of the olefin polymeri...
|
|
WO/2009/056461A1 |
A method for controlling a solution process for the polymerisation of olefins is disclosed. The method is based on an algorithm that calculates predicted operating parameters of the process, including calculation of the extent of reactio...
|
|
WO/2009/053672A1 |
A method for preparing a catalyst precursor for an olefin polymerization catalyst involves the use of aqueous or alcoholic solutions of a chromium salt and of boric acid and aluminium carboxylate for deposition onto an inorganic support ...
|
|
WO/2009/053228A1 |
This invention relates to the use of a coloured polyethylene pipe for transporting water containing disinfectant. The pipe is prepared from a polyethylene resin, that is produced with one or more single site catalyst systems, and that co...
|
|
WO/2009/054832A1 |
Certain metallocene compounds are provided that, when used as a component in a supported polymerization catalyst under industrially relevant polymerization conditions, afford high molar mass homo polymers or copolymers like polypropylene...
|
|
WO/2009/054831A1 |
A metallocene compound with the 4- and 7-positions on the indenyl moiety possessing large aromatic substituents is prepared in accordance with a method which produces substantially 100 percent racemic isomer. Advantageously, polymerisati...
|
|
WO/2009/052701A1 |
A non-metallocene catalyst supported on a magnesium compound is disclosed. The catalyst is obtained either in situ through a supported method by directly contacting a non-metallocene ligand with a magnesium compound containing a metal wi...
|
|
WO/2009/052700A1 |
A supported non-metallocene catalyst which is obtained in situ through a supported method by reacting a non-metallocene ligand with a metal compound with catalytic activity on a carrier is disclosed. Such method is industrially practicab...
|
|
WO/2009/050042A1 |
The present invention relates to the covalent anchorage of non-coordinating anions on mineral supports to prepare supported ionic liquids and to their use as activating supports for the polymerisation of ethylene and alpha-olefins. The i...
|
|
WO/2009/050037A1 |
A metallocene compound of formula (I) Wherein M is an atom of a transition metal; X, is a hydrogen atom, a halogen atom, or a hydrocarbon group optionally containing heteroatoms R1 and R2, equal to or different from each other, are C1-C4...
|
|
WO/2009/045300A2 |
The present techniques relate to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene compound comprising bridged 5-cyclopentadienyl-type ligands, typically in combination with a cocatalyst, and a activator. Th...
|
|
WO/2009/045043A2 |
Disclosed is a method of preparing a highly transparent polypropylene αmprising a step of prepolymerizing an α-olefin and a vinyl cyclic saturated hydrocarbon in the presence of a Zegler-Natta catalyst and an external electron donor, w...
|
|
WO/2009/045215A1 |
A method comprising contacting a donor support with a recipient support to generate a mixture, wherein the donor support and the recipient support are selected from the group consisting of alumina, silica-titania, aluminophosphate, zirco...
|
|
WO/2009/043157A1 |
Polyethylene is made by (co)polymerizing ethylene in a gas-phase reactor using a mixed catalyst system comprising a chromium catalyst supported on silica and a Group 4 transition metal catalyst, separately supported on silica. The Group ...
|
|
WO/2009/045301A2 |
The present techniques relate to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene compound comprising bridging 5-cyclopentadienyl-type ligands, typically in combination with a cocatalyst, and a activator. T...
|
|
WO/2009/043156A1 |
Polyethylene is made by (co)polymerizing ethylene in a gas-phase reactor using a catalyst system comprising a chromium catalyst and a Group 4 transition metal catalyst, co-supported on an inorganic oxide support. The Group 4 transition m...
|
|
WO/2009/045625A1 |
A catalyst system for the polymerization or copolymerization of α-olefins comprises a bis(imino)pyridyl complex of a transition metal on a support having an aluminum halide and/or an alkylaluminum halide chemically or physically bonded ...
|
|
WO/2009/043828A1 |
The present invention relates to methods for delivering granulated material to a reactor for use in the polymerization of alpha-olefin comprising the steps of: providing a first conduit having a granulated material inlet, the conduit bei...
|
|
WO/2009/041725A1 |
A process for producing an olefin polymer using a vapor phase polymerization apparatus which comprises a fluidized bed reactor, a gas-circulating line assembled by connecting a gas outlet located on the upper side of the reactor to a gas...
|
|
WO/2009/042149A2 |
A method of preparing a catalyst comprising contacting a support with a trivalent titanium compound and a chromium-containing compound. A catalyst composition comprising a support, chromium, and titanium, wherein the titanium is derived ...
|
|
WO/2009/037103A1 |
This invention is related to the preparation of polyethylene pipe resins suitable for transporting hot and cold water containing chloramine.
|
|
WO/2009/038041A1 |
Disclosed is a transition metal ion complex represented by the following general formula (1). (In the formula, M represents a group 4 element of the periodic table; A represents a group 14 element of the periodic table; D represents a gr...
|
|
WO/2009/037080A1 |
A process for the multistage polymerization of olefins in a sequence of an upstream slurry reactor and a downstream gas-phase reactor, the transfer of polymer from the upstream reactor to the downstream reactor comprising the following s...
|
|
WO/2009/038753A1 |
The present invention relates to methods and apparatus for activation of a low reactivity, non-polar chemical compound. In one example embodiment, the method comprise introducing the low reactivity chemical compound to a catalyst. At lea...
|
|
WO/2009/032050A1 |
A slurry process for polymerizing ethylene is disclosed. The process comprises polymerizing ethylene in the presence of an a-olefin and a catalyst comprising an activator and a supported bridged bis-indeno[2,1-b]indolyl zirconium complex...
|
|
WO/2009/030460A1 |
Continuous feed of auxiliaries for the polymerization reaction of ethylene, propene, and other higher homologous olefins in the preparation of homo- and copolymers, avoiding production of inhomogeneities, such as lumps or chunks which ar...
|
|
WO/2009/030646A1 |
Process for producing a multimodal polyethylene in at least two reactors connected in series, in which 20-80wt% of a high molecular weight (HMW) polymer is made in suspension in a first reactor and 20-80wt% of a low molecular weight (LMW...
|
|
WO/2009/030645A1 |
Process for producing a multimodal polyethylene in at least two reactors connected in series, in which 20-80wt% of a first polymer is made in suspension in a first reactor and 80-20wt% of a second polymer is made in suspension in a secon...
|
|
WO/2009/030647A1 |
Process for producing a multimodal polyethylene in at least two loop reactors connected in series, in which 20-80wt% of a high molecular weight (HMW) polymer is made in suspension in a first reactor and 20-80wt% of a low molecular weight...
|
|
WO/2009/030642A1 |
Process for producing a multimodal polyethylene in at least two reactors connected in series, in which 20-80wt% of a high molecular weight (HMW) polymer is made in suspension in a first reactor and 20-80wt% of a low molecular weight (LMW...
|
|
WO/2009/030644A1 |
A polymerisation process is disclosed in which polyethylene is produced in slurry in a polymerisation reactor in the presence of a Ziegler Natta catalyst and an activator, and slurry containing the polymer is withdrawn from the reactor a...
|
|
WO/2009/029486A2 |
A process for polymerizing one or more olefins in a gas-phase polymerization reactor is provided. The gas-phase reactor has a fluidized bed and a fluidizing medium. The flυidizing medium has an operating density and an operating velocit...
|
|
WO/2009/027181A1 |
The invention relates to the production of compounds (I) containing hydrocarbon chains R1-C(CH3)2-CH2-C(CH3)2-[CH2-CH=CH-CH2]n-Nu, in which R1 represents a hydrocarbon group, Nu represents a group derived from an O- or N-nucleophile and ...
|
|
WO/2009/029366A1 |
The method of polymerization includes the steps of a) providing a catalyst system, b) providing at least one monomer or comonomer mixture in a reaction vessel, c) introducing the catalyst into the reaction vessel, and d) polymerizing the...
|
|
WO/2009/029857A1 |
Compositions useful for activating catalysts for olefin polymerization, and methods for making same, are provided. Such compositions can be derived from at least: a) an intermediate composition derived from at least an organoaluminium co...
|
|
WO/2009/026675A1 |
The current invention provides a method of improving the efficiency of one or more heat exchangers used in cooperation with a high temperature solution polymerization process. Addition of surface active agents, such as C6 to C22 carboxyl...
|
|
WO/2009/027518A1 |
The present invention relates to a loop reactor suitable for olefin polymerization process comprising: a plurality of interconnected pipes defining a flow path for a polymer slurry, said slurry consisting essentially of an olefin reactan...
|
|
WO/2009/027269A1 |
The present invention relates to catalysts systems for the polymerization of ethylene and its mixtures with olefins CH2=CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1 -12 carbon atoms, comprising (A) a solid catalyst com...
|
|
WO/2009/027378A1 |
A resin composition comprising at least 0.1% by weight of poly(hydroxy carboxylic acid) and at least 50% by weight of polypropylene prepared with a single-site catalyst, preferably with a metallocene catalyst.
|
|
WO/2009/027266A1 |
The present invention relates to catalysts for the polymerization of ethylene and its mixtures with olefins CH2=CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising (A) a solid catalyst component co...
|
|
WO/2009/029447A1 |
A catalyst composition for the polymerization of propylene is provided. The catalyst composition includes one or more Ziegler-Natta procatalyst compositions having one or more transition metal compounds and an internal electron donor, on...
|
|
WO/2009/027270A1 |
The present invention relates to catalysts for the polymerization of olefins, in particular ethylene and its mixtures with olefins CH2=CHR, wherein R is an alkyl, cycloalkyl or aryl radical having 1-12 carbon atoms, comprising a solid ca...
|
|
WO/2009/027075A2 |
A complex comprising a ligand of formula (I), wherein each R1, which may be the same or different, is hydrogen, an optionally substituted C1-20 hydrocarbyl group, N(R5)2, silyl, siloxy; an optionally substituted heteroaryl group, an opti...
|
|
WO/2009/024675A2 |
Novel group 4 organometallic compounds, supported on anions by means of at least one covalent metal-oxygen bond, are obtained by reaction of at least one borate or aluminate comprising at least one hydroxy group with at least one group 4...
|
|
WO/2009/025696A1 |
A process to prepare a multimodal polyethylene with controlled LCB distribution is disclosed. In the first stage, ethylene is polymerized in the presence of a Ziegler catalyst that results in a homopolyethylene component having a higher ...
|
|
WO/2009/020121A1 |
An ethylene polymer satisfying the following requirements (A) to (H). (A) Density (kg/m3): 910 to below 950; (B) MFR (g/10 min): 0.1 to 20; (C) the number of terminal vinyls: 0.2 vinyl or less per 1000 carbon atoms; (D) the relationship ...
|
|
WO/2009/019169A1 |
The present invention relates to a process for producing a propylene terpolymer comprising comonomer units derived from ethylene and from one alpha-olefin selected from the group of C4-C8 alpha-olefins and being characterized by a total ...
|
|
WO/2009/021096A1 |
Embodiments of the present invention are directed generally to methods for producing high purity exo-alkenylnorbornenes from a mixture of conformational isomers thereof.
|
|
WO/2009/019919A1 |
A propylene polymer which has satisfactory flowability, a high melt tension, and a high swell ratio and hence has excellent moldability. It is suitable for use in foam molding, sheet forming, blow molding, etc. The propylene polymer is c...
|
|
WO/2009/017930A1 |
The instant invention is a polymeric composition, process of producing the same, and articles made therefrom. The polymeric composition according to instant invention comprises: (1) a polyolefin, wherein said polyolefin is the polymeriza...
|
