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| Number | Title | Issue Date |
| 8129489 | Ethylene polymer and use thereof The present invention provides an ethylene polymer that has excellent fluidity and moldability as well as gives a molded product having excellent mechanical strength. The ethylene polymer of the present invention contains 0.02 to 1.50 mol % of a constitutiona... | 03/06/2012 |
| 8129490 | Soft propylene polymer compositions A propylene polymer composition having a Flexural modulus lower than 500 MPa, a total ethylene content from 9 to 30% by weight, a xylene soluble fraction at room temperature higher than 25% by weight, a melting temperature measured by DSC (Tm° C.) from 130 to 150°... | 03/06/2012 |
| 8124709 | Ethylene/α-olefin block interpolymers Embodiments of the invention provide a class of mesophase separated ethylene/α-olefin block interpolymers with controlled block sequences. The ethylene/α-olefin interpolymers are characterized by an average block index, ABI, which is greater than zero and up to ab... | 02/28/2012 |
| 8124708 | Polyolefin powder Uncompounded polyolefin powder which is multimodal and has a particle size distribution such that D95 is less than 355 μm, D5 is at least 60 μm, and (D90−D10)/D50 is less than 1.2, where D95, D90, D50 and D10 are defined such that 95 wt %, 90 wt %, 50 wt % and 1... | 02/28/2012 |
| 8093344 | β-pinene polymer and process for producing the same To provide a β-pinene polymer excellent in heat resistance while having thermoplasticity, and further also having excellent strength, without impairing the inherent characteristics of small specific gravity and excellent transparency. A desired β-pinene polymer ha... | 01/10/2012 |
| 8067518 | Polymers made with metallocene catalysts, for use in rotomolding and injection molding products Ethylene alpha-olefin copolymers formed by contacting at least one supported metallocene catalyst, ethylene, and an alpha-olefin in a gas phase reactor are disclosed. In some embodiments, the polymer may have: a density of between 0.890 and 0.970 g/cc; a melt index ... | 11/29/2011 |
| 8039569 | Polyethylene molding compositions for injection molding applications Monomodal molding compositions based on polymers of ethylene, wherein the density of the molding compositions is in the range from 0.940 to 0.96 g/cm3, the Mi is in the range from 0.5 to 10.0 g/10 min. the polydispersity Mw/Mn is in ... | 10/18/2011 |
| 7981991 | Separation of polymer slurries Methods for producing elastomers or elastomeric compositions are provided. One or more C4 to C7 isoolefins and one or more comonomers can be polymerized in the presence of a diluent comprising one or more hydrofluorocarbons to provide a slurry ... | 07/19/2011 |
| 7947797 | Method for operating a gas-phase reactor at or near maximum production rates while controlling polymer stickiness Embodiments of the present invention relate to operating a gas-phase reactor at or near maximum production rates and to measuring and controlling polymer stickiness in a gas phase reactor polymerization. In particular, embodiments relate to monitoring acoustic emiss... | 05/24/2011 |
| 7910679 | Bulk homogeneous polymerization process for ethylene propylene copolymers Provided are bulk homogeneous polymerization processes for producing ethylene propylene random copolymers. The process includes contacting in a reactor or in a series of reactors propylene monomer, ethylene comonomer with one or more catalyst systems and optional so... | 03/22/2011 |
| 7893180 | Process for the polymerization of olefins; novel polyethylenes, and films and articles produced therefrom A novel process for the polymerization of olefins is provided. The process involves contacting at least one olefin with a Ziegler-Natta type catalyst in the presence of a specified compound that results in the production of polymeric products having a narrower molec... | 02/22/2011 |
| 7888444 | Production of isotactic and regiorandom polypropylene based polymer and block copolymers One step ortho-alkylation of anilines with styrenes to give chiral anilines is obtained using a strong acid catalyst, e.g. CF3SO3H. Condensation of the product to give ligand and metallation gives complex which catalyzes polymerization of propy... | 02/15/2011 |
| 7875690 | Ethylene-alpha olefin copolymers and polymerization processes for making the same A process for the production of an ethylene alpha-olefin copolymer is disclosed. The process includes polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas pha... | 01/25/2011 |
| 7875691 | Polyethylene composition with improved stress crack resistance/stiffness relation for blow moulding The present invention relates to a polyethylene composition wherein (i) the composition has an MFR2 of 0.05 to 100 g/10 min, (ii) the environmental stress crack resistance ESCR measured according to the FNCT at 12 MPa and 23° C. in hours and the E-modulus EM measur... | 01/25/2011 |
| 7842770 | Compositions of ethylene/α-olefin multi-block interpolymer for blown films with high hot tack The present invention relates to film layers and compositions having improved hot tack properties. The compositions comprise at least one ethylene/α-olefin interpolymer, wherein the ethylene/α-olefin interpolymer may have, for example, a Mw/Mn from about 1.7 to ab... | 11/30/2010 |
| 7838611 | Ethylene polymer, catalyst for ethylene polymer production, and method for producing ethylene polymer An object of the present invention relates to provide an ethylene polymer having excellent mechanical strength and excellent molding processability in a wide molding processing temperature range. The invention relates to use an ethylene polymer comprising a repeatin... | 11/23/2010 |
| 7795365 | Liquid and gel-like low molecular weight ethylene polymers The subject invention pertains to homogeneous liquid low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of ... | 09/14/2010 |
| 7795366 | Modified polyethylene compositions The present invention relates to a composition comprising more than 25 weight % (based on the weight of the composition) of one or more ethylene polymers having an Mw of 20,000 g/mole or more and at least 0.1 weight % of a liquid hydrocarbon modifier wher... | 09/14/2010 |
| 7750104 | Shear thinning ethylene/α-olefin interpolymers and their preparation Shear-thinning ethylene/α-olefin and ethylene/α-olefin/diene monomer interpolymers that do not include a traditional branch-inducing monomer such as norbornadiene are prepared at an elevated temperature in an atmosphere that has little or no hydrogen using a const... | 07/06/2010 |
| 7732551 | Post-treatment for polymer pellets A continuous process for minimizing the agglomeration of freshly manufactured polyolefin pellets comprising the steps of: feeding an aqueous stream containing polyolefin pellets to a tower, cooling said polyolefin ... | 06/08/2010 |
| 7700707 | Polyolefin adhesive compositions and articles made therefrom Embodiments of the present invention relate to article comprising 1) a functionalized component, 2) tackifier, and 3) an olefin polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 5 mole % of ethylene having a Dot T-Peel... | 04/20/2010 |
| 7674869 | Mini-random copolymer resins having improved mechanical toughness and related properties suitable for thin wall thermoforming applications A random copolymer having improved mechanical toughness and properties suitable for thin wall thermoforming applications is provided. The random copolymer exhibits the following physical properties: a flexural modulus profile having a 2% flexural modulus of about 16... | 03/09/2010 |
| 7652113 | Polyethylene copolymers having low n-hexane extractable A novel process for the polymerization of olefins is provided. The process involves contacting at least one olefin with a Ziegler-Natta type catalyst in the presence of a specified compound that results in the production of polymeric products having a narrower molec... | 01/26/2010 |
| 7642330 | Method of selecting polyolefins based on rheological properties This invention relates to a method for selecting a polyolefin having a die swell within a pre-selected range, the method comprising (a) obtaining from reference samples of a plurality of polyolefin batches a data set for at least one property, other than die swell, ... | 01/05/2010 |
| 7598333 | Low-viscosity drag reducer Low-viscosity drag reducers, systems for delivering low-viscosity drag reducers, and methods of making low-viscosity drag reducers are disclosed. The low-viscosity drag reducers have a viscosity less than 350 cP at a shear rate of 250 sec−1 and a temper... | 10/06/2009 |
| 7592410 | Polyethylene resin with narrow particle size distribution The present invention relates to a polyethylene resin comprising A) a first ethylene homo- or copolymer fraction, and B) a second ethylene homo- or copolymer fraction, wherein fraction (A) has a lower molecular weight than fraction (B), characterized in that the pol... | 09/22/2009 |
| 7582716 | Compositions of ethylene/α-olefin multi-block interpolymer for blown films with high hot tack The present invention relates to film layers and compositions having improved hot tack properties. The compositions comprise at least one ethylene/α-olefin interpolymer, wherein the ethylene/α-olefin interpolymer may have, for example, a Mw/Mn from about 1.7 to ab... | 09/01/2009 |
| 7579422 | Propylene random copolymer and process for the production thereof The present invention relates to a process for preparing a propylene random copolymer comprising polymerization of propylene with a comonomer, said comonomer being ethylene or an α-olefin comprising at least four carbon atoms, in the presence of a catalyst in a mul... | 08/25/2009 |
| 7572875 | Ethylene homopolymers or copolymers having good machine direction (MD) elmendorf tear strength This invention relates to catalyst compositions comprising a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. This invention also relates to methods to prepare and use t... | 08/11/2009 |
| 7569651 | Transition metal compound, ligand system, catalyst system and its use for the polymerization and copolymerization of olefins A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which ... | 08/04/2009 |
| 7560523 | Production of isotactic and regiorandom polypropylene based polymer and block copolymers One step ortho-alkylation of anilines with styrenes to give chiral anilines is obtained using a strong acid catalyst, e.g. CF3SO3H. Condensation of the product to give ligand and metallation gives complex which catalyzes polymerization of propy... | 07/14/2009 |
| 7560524 | High-density polyethylene compositions and method of making the same The instant invention is a high-density polyethylene composition, and method of making the same. The high-density polyethylene composition of the instant invention includes an ethylene alpha-olefin copolymer having a density in the range of 0.935 to 0.952 g/cm3... | 07/14/2009 |
| 7534847 | Copolymers of ethylene with α-olefins Copolymers of ethylene with α-olefins which have a molar mass distribution Mw/Mn of from 1 to 8, a density of from 0.85 to 0.94 g/cm3, a molar mass Mn of from 10.000 g/mol to 4 000 000 g/mol and a CDBI of less than 50% an... | 05/19/2009 |
| 7528205 | Photo radical generator, photo sensitive resin composition and article A photoradical generator which produces no low-molecular decomposition material but a radical during a photoradical generating process, does not generate a radical during a heating process, exists in a chemically stable state in a resulting product of a radical reac... | 05/05/2009 |
| 7524912 | Preparation of linear ethylene-acrylate copolymers with palladium catalysts and free radical scavengers A polymerizable composition including a late transition metal complex, a non-polar olefin, a polar olefin, and a free radical scavenger, wherein the polymerizable composition is capable of forming a linear poly[(non-polar olefin)-(polar olefin)] substantially free o... | 04/28/2009 |
| 7524910 | Polyolefin adhesive compositions and articles made therefrom Embodiments of the present invention relate to article comprising a polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 5 mole % of ethylene having a Dot T-Peel of 1 Newton or more, a branching index (g′) of 0.95 or le... | 04/28/2009 |
| 7524911 | Adhesive and marking compositions made from interpolymers of ethylene/α-olefins An adhesive composition comprises: (i) at least one ethylene/α-olefin interpolymer, (ii) at least one tackifier; and (iii) optionally at least one additive, such as a plasticizer, wax and antioxidant. Preferably, the ethylene/α-olefin interpolymer has a Mw | 04/28/2009 |
| 7521518 | Ethylene copolymer compositions Disclosed is a novel ethylene copolymer by copolymerizing an ethylene and at least one comonomer selected from a compound represented by the formula H2C═CHR wherein R is an alkyl group or an aryl group, and a diene, by slurry polymerization process in t... | 04/21/2009 |
| 7479531 | Olefin polymerization catalyst system useful for polar monomers This invention relates to copolymers produced by a polymerization method comprising contacting at least one olefin monomer, at least one polar monomer, an optional activator, and a catalyst compound represented by the formula: | 01/20/2009 |
| 7473750 | Random copolymers and formulations useful for thermoforming and blow molding applications A composition that may be useful for thermoforming and blow molding applications comprises a metallocene catalyzed propylene-ethylene random copolymer having an ethylene content of from about 0.1 to about 1.5 weight percent based on the copolymer, and exhibits a fle... | 01/06/2009 |
