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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8188206 | 10-50 G/D high strength polyethylene fiber and preparation method thereof A 10-50 g/d high strength polyethylene fiber and preparation method thereof are provided, which are in the high molecular material field. Said fiber is obtained by cross blend melt spinning method, and its strength is 10-50 g/d, its modulus is 400-2000 g/d. The mate... | 05/29/2012 |
| 8188207 | Process for producing high strength polyethylene film Process for producing high strength polyethylene films or tapes comprising the steps of: providing a quantity of disentangled polyethylene, applying a pressure of at least 20 bar to the quantity of disentangled polyethylene and a temperature between the α-relaxatio... | 05/29/2012 |
| 8110644 | Bimodal pipe resin and products made therefrom Disclosed is a bimodal Ziegler-Natta catalyzed polyethylene, having a density of from 0.930 g/cc to 0.960 g/cc, and a molecular weight distribution of from 10 to 25, wherein an article formed therefrom has a PENT of at least 1500. Also disclosed is a method of prepa... | 02/07/2012 |
| 8044160 | Polyethylene composition for injection molded caps and closure articles The present invention relates to a multimodal polyethylene composition wherein (i) the composition has an MFR2 of 0.1 to 100 g/10 min, (ii) the shear thinning index SHI(1,100) and the log MFR2 of the composition satisfy the following... | 10/25/2011 |
| 7858723 | Ethylene-based resin and molded object obtained therefrom Ethylene-based resin, which exhibits a satisfactorily high melt tension and can provide a molded object excellent in mechanical strength, the ethylene-based resin characterized in simultaneously satisfying the requirements [1] to [5] described below: [1... | 12/28/2010 |
| 7834117 | Process for preparing crystalline ethylene (co)polymers A process for preparing crystalline ethylene (co)polymers comprising (co)polymerizing ethylene in the presence of carried out in the presence catalyst system comprising (a) a solid catalyst component comprising Ti, Mg, halogen, ORI groups, where RI is a C1-C12 hydro... | 11/16/2010 |
| 7807770 | Drawn tapes, fibre and filaments comprising a multimodal polyethylene resin Drawn tape, fiber or filament including a multimodal resin having a density of at least 940 kg/m3, a melt index MI5 of 0.05 to 5 g/10 min, and a molecular weight distribution of the resin being less than 40. ... | 10/05/2010 |
| 7790826 | Polymer molding compositions The invention relates to formulated compositions which can be easily formed into bottle caps, without the need for a liner, while still maintaining pressure requirements, such as for carbonated beverages. The compositions may include an ethylene polymer having a den... | 09/07/2010 |
| 7786237 | Polyethylene materials prepared using mixed ziegler-natta catalysts systems A polyethylene may be prepared using a mixture of a silica supported catalyst and a magnesium chloride supported catalyst. By changing the ratio of the two catalysts, the polyethylene produced may have a varying bulk density and shear response. The method allows for... | 08/31/2010 |
| 7759445 | Process for preparing 1-olefin (co) polymers For the (co) polymerization of ethylene with other 1-olefins, a Ziegler catalyst which comprises the product from the reaction of a magnesium alkoxide suspended or dispersed as ge in an inert solvent with a tetravalent transition metal compound and is subjected to a... | 07/20/2010 |
| 7754840 | Bimodal high density polyethlyene The present invention is directed to a bimodal polyethylene comprising ethylene derived units and units derived from at least one of a C4 to C12 olefin; wherein the polyethylene has a density of from 0.940 to 0.970 g/cm3; an I21... | 07/13/2010 |
| 7714091 | Catalyst comprising chromium and zirconium for the polymerization and/or copolymerization of olefins Catalyst for the polymerization and/or copolymerization of olefins which is obtainable by application to a finely divided inorganic support and concluding calcination at temperatures of from 350 to 1050° C. and has a chromium content of from 0.1 to 5% by weight and... | 05/11/2010 |
| 7671159 | Process for the preparation of a shaped part of an ultra high molecular weight polyethylene The invention relates to a process for the manufacture of a shaped part of ultra high molecular weight polyethylene (UHMWPE) comprising melt processing, wherein a) the UHMWPE has a weight average molecular weight (Mw) of at least 1*106 g/mol, b) during the shaping t... | 03/02/2010 |
| 7547754 | Organometal compound catalyst This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said cata... | 06/16/2009 |
| 7452954 | Polymer of ethylene The invention relates to a polymer of ethylene which has a μo/μ2 ratio of at least 13; and a high load melt index HLMI lower than 8 g /10 min, and a value of tan δ at ω/ωc=0.01 of less than 1.3, where δ is G″/G′, ω is the frequency a... | 11/18/2008 |
| 7439313 | Magnesium dichloride-ethanol adducts and catalyst components obtained therefrom A MgCl2.mEtOH.nH2O adducts, where 3.4 | 10/21/2008 |
| 7435370 | Process of making a fiber A fiber and a process for obtaining same from a high-modulus polyethylene, extrudable in state-of-the-art equipment and in the absence of previous solubilization in any kind of organic solvent is described, the process comprising providing such a polyethylene, intro... | 10/14/2008 |
| 7435372 | Liquid bath annealing of polymers for orthopaedic implants A method is provided for annealing a polymer for an orthopaedic implant by immersing the polymer in a liquid bath. ... | 10/14/2008 |
| 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 |
| 7423099 | Process for producing polyolefin A process for producing a polyolefin comprising a combination of liquid phase polymerization of α-olefin conducted in one or more liquid phase polymerization reactors and gas phase polymerization of α-olefin conducted in one or more gas phase polymerization reacto... | 09/09/2008 |
| 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 |
| 7407695 | High gloss polyethylene articles The present invention includes an end use article (i.e., an article of manufacture) and a process for making the same, wherein the end use article has a relatively high gloss and exhibits excellent processability over a wide range of processing conditions. The end u... | 08/05/2008 |
| 7402637 | Method for producing a poly-1-olefin in the presence of a Ziegler catalyst The invention relates to a method for producing a poly-1-olefin by polymerization of a 1-olefin of the formula R4C═CH2, in which R4 is hydrogen or an alkyl radical having from 1 to 10 carbon atoms, in suspension, in solution or in ... | 07/22/2008 |
| 7393910 | Catalyst composition for ethylene polymerization A process for the polymerization of olefin monomers comprising contacting ethylene or a mixture of ethylene and one or more C4-8 α olefins with a catalyst composition comprising one or more Group 3-10 transition metal containing, Ziegler-Natta, procataly... | 07/01/2008 |
| 7388059 | Ethylene polymer, catalyst for producing thereof and method for producing thereof A method for producing an ethylene polymer which comprises continuously polymerizing ethylene alone or copolymerizing ethylene and a C3-C8 α-olefin by multistage polymerization in a plurality of polymerization reactors connected in series in t... | 06/17/2008 |
| 7381783 | Polymerization catalyst systems, their use, their products and articles thereof The present invention relates to a process for the polymerization of monomers utilizing a bulky ligand hafnium transition metal metallocene-type catalyst compound, to the catalyst compound itself and to the catalyst compound in combination with an activator. The inv... | 06/03/2008 |
| 7381752 | Selective, controlled manipulation of polymers The present invention provides partial and complete shielding approaches to alter the cross-linking characteristics of irradiated polymers, such as polyethylene. Irradiated polymers and fabricated articles, such as medical prosteses, comprising irradiated polymers a... | 06/03/2008 |
| 7381778 | Method of preparing a treated support This invention relates to a method of preparing a supported catalyst comprising the steps of contacting a solid titanium with a supported catalyst compound, and heating the combination to at least 150° C. ... | 06/03/2008 |
| 7378481 | Hot Melt Adhesives A hot melt adhesive based on a functionalized metallocene polyethylene copolymer finds use in packaging applications where high heat resistance, as well as good cold tolerance, is required. ... | 05/27/2008 |
| 7375169 | Method for catalyst preparation and improved polyethylene blow molding resin A method for polymerizing ethylene is provided. The method can include preparing a supported catalyst composition comprising the steps of: (a) dehydrating a chromium impregnated support; (b) at least partially dissolving a titanium-containing compound in one or more... | 05/20/2008 |
| 7370395 | Heating apparatus and process for drawing polyolefin fibers A heating apparatus and process useful for drawing ultrahigh molecular weight polyolefin fibers, such as polyethylene fibers. The heating apparatus includes a first set of rolls and a plurality of aligned ovens. The apparatus includes a second set of rolls at the ex... | 05/13/2008 |
| 7368516 | Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst A catalyst used for trimerization of ethylene into 1-hexene is descrobed, which comprises (i) a specific organometallic complex having a neutral multidentate ligand having a tripod structure, (ii) an alkylaluminoxane, and an optional ingredient selected from: ... | 05/06/2008 |
| 7364685 | Method for producing implant parts from highly cross-linked UHMWPE and implant parts for human medicine The invention relates to a method of manufacturing implant parts made of highly cross-linked polyethylene, wherein a blank made of ultra-high-molecular-weight polyethylene is irradiated with ionizing radiation in order to produce radicals in the blank. To optimize t... | 04/29/2008 |
| 7354981 | Polyethylene catalyst and a process for preparing the same The present invention discloses a polyethylene catalyst and a process for preparing the same, said catalyst being composed of a main component of catalyst and a cocatalyst, wherein the main component of catalyst is prepared by reacting: (1) a magnesium-alcohol compl... | 04/08/2008 |
| 7351465 | Polymeric based carpet Polymeric carpet and a method of making and recycling such carpet, the carpet having fibers, backing and extruded adhesive all of completely recyclable materials, the recycling being accomplished in one melting step, without a separation step. ... | 04/01/2008 |
| 7348385 | Acrylate/methacrylate adhesives initiated by chlorosulfonated polymer An adhesive formulation including an acrylate monomer and/or a methacrylate monomer, a chlorosulfonated polymer resin, and a reducing agent. The adhesive also includes a cycloheteroatom zirconate or a cycloheteroatom titannate, which is utilized as a cure profile re... | 03/25/2008 |
| 7348388 | Copolymers of olefins and vinyl- and allylsilanes Ethylene and allyl- or vinylsilanes are efficiently copolymerized by certain late transition metal complexes containing selected bidentate or tridentate ligands. The resulting novel polymers may be crosslinked by moisture when vinylsilane contains groups bound to si... | 03/25/2008 |
| 7348384 | Supported, titanized chromium catalyst and its use for preparing homopolymers and copolymers of ethylene Novel supported, titanized chromium catalysts for the homopolymerization of ethylene and the copolymerization of ethylene with α-olefins, a process for preparing them and to their use for the polymerization of olefins. ... | 03/25/2008 |
| 7345119 | Olefin polymerization catalyst and olefin polymerization method using the same An olefin polymerization solid catalyst including a reaction product of a transition metal compound and an organoaluminum compound carried on a support having silica treated with an organoaluminum-oxy compound. ... | 03/18/2008 |
| 7345129 | Polymerisation catalysts A catalyst for the polymerisation of 1-olefins is disclosed, which comprises (1) a compound of Formula B wherein M is Fe[II], Fe[III], Co[I], Co[II], Co[III], Mn[I], Mn[II], Mn[III], Mn[IV], Ru[II], Ru[III] or Ru[IV]; X represents an atom or group covalently or ioni... | 03/18/2008 |
