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| Number | Title | Issue Date |
| 8138293 | Process for preparing polymers from 3-methylbut-1-ene The present invention relates to a copolymer which contains 3-methylbut-1-ene as a comonomer and which contains ethene or propene as a further monomer, the proportion of the incorporated 3-methylbut-1-ene being 0.1 to 40 mol %, and to a process for preparing such co... | 03/20/2012 |
| 8003743 | Metallocene compounds, ligands used in their preparation, preparation of 1-butene polymers and 1-butene polymers therefrom A process for preparing 1-butene polymers comprising polymerizing 1-butene and optionally ethylene, propylene or higher alpha-olefin, in the presence of a catalyst system obtainable by contacting: a) metallocene compound of formula (I): | 08/23/2011 |
| 7981993 | 1-butene ethylene copolymers A 1-butene ethylene copolymer having an ethylene derived units content ranging from 15.10% by molto 18.00% by mol having the following properties: a) distribution of molecular weight lower than 3; preferably b) hardness shore A (measured according to ISO 868) lower ... | 07/19/2011 |
| 7977444 | Process for polymerizaing 1-hexene or higher alpha-olefins A process for preparing a polymer containing derived units of one or more alpha olefins of formula CH2═CHW wherein W is a C3-C10 hydrocarbon radical and optionally from 0 to 81% by mol of derived units of propylene or 1-butene, com... | 07/12/2011 |
| 7968665 | Highly flowable 1-butene polymer and process for producing the same A 1-butene polymer satisfying the following (1), (2) and either (3) or (3′): a process for producing the polymer; a resin modifier comprising the polymer; and a hot-melt adhesive containing the polymer. (1) The intrinsic viscosity [η] as measured in tetralin solv... | 06/28/2011 |
| 7943717 | Butene-1 copolymers and process for their preparation The present invention relates to butene-1 copolymers containing up to 40% by mol of ethylene and/or propylene derived characterized by the following properties: d) Product of the reactivity ratios r1·r2≦2; e) Content of butene-1 units in form of isotactic pentads... | 05/17/2011 |
| 7807768 | Highly viscous, largely amorphous polyolefin A polyolefin which contains the following monomer units: a) not more than 25% by weight of units which are derived from ethene, b) not more than 75% by weight of units which are derived from propene and c) from 5 to 100% by wei... | 10/05/2010 |
| 7776986 | Butene-1 (Co)Polymers having low isotacticity Butene-1 (co)polymers characterized by the following properties: content of butene-1 units in the form of isotactic pentads (mmmm) from 25 to 55%; intrinsic viscosity [η] measured in tetraline at 135° C. from 1 t... | 08/17/2010 |
| 7737239 | Propylene copolymer, polypropylene composition and uses thereof, transition metal compound and olefin polymerization catalyst A propylene elastomer (PBER) comprising (a) 50 to 85 mol % of units derived from propylene, (b) 5 to 25 mol % of units derived from 1-butene and (c) 10 to 25 mol % of units derived from ethylene, and having a molar ratio of propylene content to ethylene content of f... | 06/15/2010 |
| 7619051 | Butene-1/ethylene copolymer A 1-butene/ethylene copolymer having a content of ethylene derived units from 0.1% to 5% by weight in which an ethylene content in the polymer (C2) and a melting point of the polymer (Tm) meet the following relation: Tm | 11/17/2009 |
| 7592411 | Synthetic lubricant composition and process A liquid polymer suitable for use as a lubricant base oil is produced by polymerizing ethylene and at least one alpha-olefin using a metallocene catalyst to provide a polymer which is then isomerized and hydrogenated to produce the liquid polymer. ... | 09/22/2009 |
| 7579423 | Process for polymerizing 1-butene A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH2═CHT wherein T is a C3-C10, alkyl group, in the presence of a catalyst system obtainable by contacting a ... | 08/25/2009 |
| 7538174 | Isotactic 1-butene copolymers An isotactic 1-butene copolymer having a content up to 30% by mol of at least one alpha-olefin of formula CH2═CHZ derived units, wherein Z is a C3-C20 hydrocarbon group, having the following features: ... | 05/26/2009 |
| 7534848 | 1-butene copolymers and process for preparing them A process comprising contacting 1-butene and one or more alpha-olefins under polymerization conditions in the presence of a catalyst system obtainable by contacting: (A) a metallocene compound of formula (I) wherein: M is a... | 05/19/2009 |
| 7514517 | Anti-blocking compositions comprising interpolymers of ethylene/α-olefins Anti-blocking polymer compositions comprise at least one ethylene/α-olefin interpolymer and at least one anti-blocking agent comprising an amide. The ethylene/α-olefin interpolymers are a multi-block copolymer comprising at least one soft block and at least one ha... | 04/07/2009 |
| 7488789 | Propylene copolymer, polypropylene composition, and uses thereof, transition metal compounds and catalyst for olefin polymerization A propylene/1-butene random copolymer containing 60 to 90 mol % of propylene units and 10 to 40 mol % of 1-butene units and has a triad isotacticity of not less than 85% and not more than 97.5%, a molecular weight distribution of from 1 to 3, an intrinsic viscosity ... | 02/10/2009 |
| 7476717 | Butene-1 homopolymer A 1-butene homopolymer having the following characteristics: intrinsic viscosity (I.V.)>0.7 dL/g isotactic triads (mm)>70%; 4,1 insertions400 M... | 01/13/2009 |
| 7429635 | Preparation of ultra high molecular weight linear low density polyethylene Disclosed is a method of preparing an ultra-high molecular weight, linear low density polyethylene with a catalyst system that comprises a bridged indenoindolyl transition metal complex, a non-bridged indenoindolyl transition metal complex, an alumoxane activator an... | 09/30/2008 |
| 7423103 | Low fouling and high activity polymerization process This invention is directed to a polymerization process that is carried out at relatively high productivity levels and with relatively low fouling. The process includes mixing together a catalyst system, at least one monomer and a hydrofluorocarbon to produce the pol... | 09/09/2008 |
| 7420012 | Rubber composition The rubber composition and the material suitable for preparing the rubber composition show high gas-barrier properties and being free from inhibition of vulcanization. The rubber composition is essentially composed of a rubber and a layered mineral filler treated wi... | 09/02/2008 |
| 7420023 | Process for producing modified butene-1 polymer and modified butene-1 polymer obtained by the process The present invention relates to a process for producing a buten-1-based polymer satisfying the following requirements (a), (b) and (c): (a) a crystalline resin having a melting point (Tm-D) of 0 to 100° C., the melting point being defined as a top of a peak observ... | 09/02/2008 |
| 7414095 | Liquid phase process for polymerizing olefins A solution process for polymerizing one or more α-olefins of the formula CH2═CHR, where R is H or an alkyl radical C1-C18, to produce a polymer that is soluble in the reaction medium, comprising the steps of: | 08/19/2008 |
| 7411023 | Pipe for hot fluids A polymer pipe for hot fluids, usually hot water is described. The pipe is characterised in that it comprises a multimodal polyethylene with a high molecular weight (HMW) fraction and a low molecular weight (LMW) fraction where said HMW fraction has a density of at ... | 08/12/2008 |
| 7396892 | Process for removal of intermediate hydrogen from cascaded polyolefin slurry reactors Multimodal polyolefin polymers may be prepared in series-connected polymerization reactors where a prior reactor is a slurry reactor employing light solvent as the slurry medium and hydrogen to limit polymer molecular weight, the polymer product from the prior react... | 07/08/2008 |
| 7390862 | Process for polymerizing 1-butene A process for polymerizing 1-butene, optionally with up to 30% by mol of ethylene, propylene or an alpha olefin of formula CH2═CHT wherein T is a C3-C10 alkyl group, in the presence of a catalyst system obtainable by contacting a m... | 06/24/2008 |
| 7345122 | High stereospecific polybutylene polymer and highly active process for preparation thereof Disclosed is a process for the preparation of a high stereospecific (isotactic) polybutylene polymer comprising the step of polymerizing a reactive monomer, 1-butene, which is used or is not used as a solvent, in the presence of catalyst and inert gas. According to ... | 03/18/2008 |
| 7345017 | Functional substances derived from oligoolefins having functional groups at the ends An amphiphilic functional substance with lipophilicity, affinity for supercritical CO2, and if necessary hydrophilicity comprising an oligoolefin chain and a perfluoroalkyl group(s) at a single end thereof or at both ends thereof with or without the inter... | 03/18/2008 |
| 7339019 | Ethylene-α-olefin copolymer A copolymer having monomer units derived from ethylene and monomer units derived from an α-olefin of 3 to 20 carbon atoms, a density of 906 to 970 kg/m3 and an activation energy of flow of 50 kJ/mol or more, and satisfying specific relations among a melt... | 03/04/2008 |
| 7335716 | Ethylene (co)polymers and uses thereof An ethylene (co)polymer of the present invention is a (co)polymer with excellent moldability and mechanical properties and either an ethylene homopolymer or a copolymer of ethylene and an α-olefin of 4 to 20 carbon atoms. The (co)polymer has methyl branches measure... | 02/26/2008 |
| 7335715 | Ethylene-alpha-olefin copolymer An ethylene-α-olefin copolymer having monomer units derived from ethylene and monomer units derived from an α-olefin of 3 to 20 carbon atoms, a density of 906 to 970 kg/m3, an activation energy of flow of 50 kJ/mol or more and a heat quantity of fusion ... | 02/26/2008 |
| 7316833 | Multi-layer thermoplastic films and packages made therefrom A multilayer thermoplastic film, and packages made from the film, comprising a layer of ethylene vinyl alcohol (EVOH) as an oxygen barrier layer, a layer of a polymer or copolymer formed by the polymerization reaction with a single site catalyst and ethylene vinyl a... | 01/08/2008 |
| 7312291 | Concrete admixture additive A new family of concrete admixture additives can be derived from reacting a mixture of olefins/cyclic olefins-maleic anhydride copolymers and methoxy polyethylene glycol amines and/or polyethylene glycol monoalkyl ethers, or a mixture of styrene-maleic anhydride cop... | 12/25/2007 |
| 7312283 | Polymerization catalysts and process for producing bimodal polymers in a single reactor Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. Methods for preparing and using such catalysts to produce polyolefins are also provided. The compositions... | 12/25/2007 |
| 7309747 | Highly flowable 1-butene polymer and process for producing the same A 1-butene polymer satisfying the following (1), (2) and either (3) or (3′): a process for producing the polymer; a resin modifier comprising the polymer; and a hot-melt adhesive containing the polymer. (1) The intrinsic viscosity [η] as measured in tetralin solv... | 12/18/2007 |
| 7302992 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 12/04/2007 |
| 7304118 | Polyethylene pipe having better melt processibility and high resistance to stress and method of preparing the same using metallocene catalyst An ethylene-based copolymer for non-crosslinked water supply pipe is provided. The ethylene-based copolymer is prepared using a supported hybrid metallocene catalyst and has a dimodal or broad molecular weight distribution. The ethylene-based copolymer has a high de... | 12/04/2007 |
| 7302991 | Fugitive pattern for casting A fugitive pattern for making a shell mold for investment casting a metal or alloy comprises a substantially random interpolymer and a low molecular weight polymer in proportions to provide a fugitive pattern having a combination of properties suitable for use in ma... | 12/04/2007 |
| 7304110 | Polymer, process for producing the polymer and curable composition containing the polymer This invention provides a production method of a vinyl polymer having a functional group at a molecular chain terminus which comprises adding a compound (I) having a functional group and an internal alkenyl group or conjugated polyene compound (II) in the living rad... | 12/04/2007 |
| 7288598 | Polyolefin masterbatch for preparing impact-resistant polyolefin articles A masterbatch composition comprising (1) 10-50 wt % of a crystalline propylene homopolymer and (2) 50-90 wt % of a blend consisting of (a) a copolymer of ethylene and one or more C4-CIO a-olefin(s), containing 10-40 of C4-CIO a-olefin(s), and (b) an amorphous copoly... | 10/30/2007 |
| 7282546 | Cocatalysts for reduction of production problems in metallocene-catalyzed polymerizations Polyolefins may be prepared using a cocatalyst conforming to the formula: AIRz(Xz)nLzm wherein Rz is a linear or branched organic moiety having at least 5 carbons and Xz | 10/16/2007 |
