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| Number | Title | Issue Date |
| 7964677 | Method of changing between incompatible polymerization catalysts in a gas-phase fluidized-bed reactor Method of changing from a polymerization using a first catalyst to a polymerization using a second catalyst which is incompatible with the first catalyst in a gas-phase reactor, which comprises the steps a) stopping of the polymerization reaction using ... | 06/21/2011 |
| 7365131 | Thermoplastic vulcanizate composition A thermoplastic vulcanizate composition comprised of (a) thermoplastic resin selected from the group consisting of polyphenylene ether, polypropylene, polyethylene, and polystyrene, (b) at least one elastomer selected from the group consisting of butadiene-isoprene ... | 04/29/2008 |
| 7351781 | Synthesis of vinyl polymers by controlled radical polymerization A controlled free radical polymerization process, which includes the steps of: adding a monofunctional iniferter compound to an oxygen-free solvent; heating the solution to a temperature sufficient to allow the iniferter compound to form two carbon centered radical ... | 04/01/2008 |
| 7326748 | Thermoplastic composition The subject invention discloses a thermoplastic composition which is comprised of a blend of a thermoplastic resin and an elastomer, wherein said thermoplastic resin is selected from the group consisting of polyphenylene ether and polystyrene, wherein said elastomer... | 02/05/2008 |
| 7312254 | High temperature stabilization of UV systems A composition comprising one or more radiation curable monomers and/or oligomers and one or heat stable composition comprising at least one radiation-curable alpha, beta-ethylenically unsaturated compound, at least one phenolic stabilizer, and at least one non-pheno... | 12/25/2007 |
| 7265191 | Multi-functional admixtures for hydraulic cement compositions A multi-functional admixture for simultaneously providing specified characteristics to hydraulic cement compositions such as concrete contains one or more of specified reaction mixtures obtained by specified two processes as well as partially or completely neutraliz... | 09/04/2007 |
| 7189593 | Elimination of RDL using tape base flip chip on flex for die stacking A flexible film interposer for stacking a flip chip semiconductor die onto a second (bottom) semiconductor die, semiconductor devices and stacked die assemblies that incorporate the flexible film interposer, and methods of fabricating the devices and assemblies are ... | 03/13/2007 |
| 7179875 | Method for producing water-absorbent resins In a process for preparing water-absorbent resins based on acrylic acid, crude acrylic acid is firstly isolated from the reaction gases from the catalytic gas-phase oxidation of propane, propylene and/or acrolein. This is treated with an aldehyde scavenger and pure ... | 02/20/2007 |
| 7166178 | Protective film and method for preparing same A high-quality protective film for a dry film resist is provided. A film of a polyethylene is used as the protective film, the polyethylene being prepared by pressurizing ethylene with use of an ultra-high pressure compressor and then polymerizing the ethylene at a ... | 01/23/2007 |
| 7112520 | Semiconductor die packages with recessed interconnecting structures and methods for assembling the same Apparatus and methods relating to semiconductor assemblies. A semiconductor assembly includes an interposer which may be constructed from a flexible material, such as a polyimide tape. A pattern of conductive traces disposed on a first surface of the interposer is i... | 09/26/2006 |
| 7053157 | Method for production of multimodal polyolefins of tunable composition, molecular weight, and polydispersity The present invention relates to a method of producing multimodal polyolefins using at least one or more activated metallocene catalysts. The activated metallocene catalysts are used in combination in a single-process method. The method allows for the production of ... | 05/30/2006 |
| 7045582 | Preparation process of copolymer for semiconductor lithography and a copolymer for semiconductor lithography available by this process Provided are a preparation process of a copolymer for semiconductor lithography, suited for a film forming composition used for the formation of minute patterns necessary for semiconductor fabrication, which comprises carrying out radical polymerization of at least ... | 05/16/2006 |
| 7015284 | Thermoplastic elastomer composition The present invention relates to a soft thermoplastic elastomer composition that is free of thermoplastic resin that can be utilized in manufacturing shoe sole inserts, seals, gaskets, wheels, and that can be overmolded on a hard substrate, such as a metal or a ther... | 03/21/2006 |
| 7005485 | Process for producing polyolefins A process is provided that produces polyolefins. The process comprises mixing a first stream, which comprises at least one catalyst deactivating agent, with a second stream, which comprises at least one polyolefin, at least one catalyst, at least one diluent, and at... | 02/28/2006 |
| 6998449 | Latent metallocene catalyst systems for olefin polymerization A metallocene catalyst may be temporarily and reversibly passivated by contact with an effective amount of a passivating compound selected from the group of oxygen, oxygen-containing compounds, and nitrogen-containing compounds. ... | 02/14/2006 |
| 6984706 | Diene rubber, process for production thereof, rubber compositions, process for producing the same, and crosslinked rubbers A diene rubber (A) having a weight average molecular weight (Mw) of 100,000 to 3,000,000, an Mw/number average molecular weight (Mn) ratio of 1.30 to 2.50, and an Mw/peak top molecular weight (Mp) ratio 0.70 to 1.30. A rubber composition comprising the diene rubber ... | 01/10/2006 |
| 6967230 | Process for producing polyolefins A process is provided that produces polyolefins. ... | 11/22/2005 |
| 6949612 | Processes for transitioning between metallocene and Ziegler-Natta polymerization catalysts Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning from olefin polymerizations utilizing metallocene catalyst systems to olefin po... | 09/27/2005 |
| 6936666 | Continuous gas-phase polymerization process Continuous gas-phase polymerization process for preparing ethylene and propene homopolymers and copolymers, in which ethylene, propene or mixtures comprising ethylene or propene and C3-C8-α-monoolefins are polymerized in the polymerization zon... | 08/30/2005 |
| 6906129 | Polymer scale preventive agent A polymer scale preventive agent for use in the polymerization of a monomer containing an ethylenic double bond is provided. The agent includes (A) a condensation reaction product obtained by reacting an aldehyde compound and a hydroxynaphthalene-based compound in t... | 06/14/2005 |
| 6897269 | Processes for transitioning between Ziegler-Natta and alumoxane-based single-site polymerization catalysts Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning among olefin polymerization reactions utilizing Ziegler-Natta catalyst systems,... | 05/24/2005 |
| 6875832 | Synthesis of vinyl polymers by controlled radical polymerization A controlled free radical polymerization process, which includes the steps of: adding a monofunctional iniferter compound to an oxygen-free solvent; heating the solution to a temperature sufficient to allow the iniferter compound to form two carbon centered radical ... | 04/05/2005 |
| 6858684 | Processes for transitioning between various polymerization catalysts This invention relates to processes for transitioning among polymerization catalyst systems, preferably catalyst systems, which are incompatible with each other. Particularly, the invention relates to processes for transitioning among olefin polymerization reactions... | 02/22/2005 |
| 6784262 | Processes for chemically-modifying the surface of emulsion polymer particles Processes for chemically-modifying the surface of an emulsion polymer particle are provided which include providing an aqueous emulsion polymer, a monomer at a level of at least 0.5% by weight based on the weight of the emulsion polymer and a, surface-modifying chem... | 08/31/2004 |
| 6710146 | Composition and process for controlled radical polymerization using multifunctional initiator/regulator compounds The present invention relates to a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b1) at least one multifunctional triazinyl based 2,2,6,6 tetramethylpiperidine-1-oxyl and a free radical initiator or b2) at least one multi... | 03/23/2004 |
| 6673879 | Use of diamines and alkanolamines to inhibit unsaturated monomer polymerization It has been discovered that the polymerization of unsaturated compounds, such as butadiene, may be inhibited by the addition of a diene and/or alkanolamine inhibitor. The inhibitor is believed to catalytically destroy peroxides present, such as hydrogen p... | 01/06/2004 |
| 6664346 | Protective film and method for preparing same A high-quality protective film for a dry film resist is provided. A film of a polyethylene is used as the protective film, the polyethylene being prepared by pressurizing ethylene with use of an ultra-high pressure compressor and then polymerizing the eth... | 12/16/2003 |
| 6660819 | Method for producing synthetic polymerizates with a very low residual monomer content, products produced according to this method and the use thereof The invention relates to a process for producing water-soluble or water-swellable polymer products with low levels of residual monomers using acrylic acid and/or acrylic acid derivatives, which process is characterized by adding a nitrogen compound to the... | 12/09/2003 |
| 6653414 | Inhibition of polymerization of unsaturated monomers Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of a mixture comprising: A) at least one stable hindered nitroxyl compound having the stru... | 11/25/2003 |
| 6639026 | Methods and compositions for inhibiting polymerization of vinyl monomers Methods and compositions for inhibiting the polymerization of vinyl monomers are disclosed. Combinations of aminophenol compounds and nitroxyl radical compounds are effective at inhibiting vinyl monomer polymerization under both processing and storage con... | 10/28/2003 |
| 6596825 | Low gel high cis polydiene The present invention is directed to a process for forming a high-cis polydiene. The process includes catalyzing a diene polymerization, and terminating the polymerization with an amine-water termination mixture, preferably a TMEDA-water termination mixtu... | 07/22/2003 |
| 6596824 | Method for producing polyolefin and gas phase polymerization apparatus Provided is a continuous vapor-phase polymerization method for producing polyolefins. In the method, polymer agglomerates and aggregates are prevented from being formed, and polymer deposition on the wall of reactors and around stirring blades is prevente... | 07/22/2003 |
| 6596798 | Preparation of low hysteresis rubber by reacting a lithium polymer with oxazoline compounds The present invention provides a method of forming a functionalized polymer. The method includes the steps of providing a living lithium polymer and terminating the polymer with an oxazoline compound selected from an organic halide oxazoline and a branche... | 07/22/2003 |
| 6573347 | Composition and process for controlled radical polymerization using multifunctional initiator/regulator compounds The present invention relates to a polymerizable composition comprising a) at least one ethylenically unsaturated monomer and b1) at least one multifunctional triazinyl based 2,2,6,6 tetramethylpiperidine-1-oxyl and a free radical initiator or b2) at leas... | 06/03/2003 |
| 6562915 | Method for carrying out radical ethylene high-pressure polymerization while preventing undesired polymer deposits In a process for the polymerization or copolymerization of ethylenically unsaturated monomers in the presence of polymerization initiators which decompose to form free radicals in a continuously operated polymerization apparatus comprising a fresh gas fee... | 05/13/2003 |
| 6552141 | Method for producing synthetic polymerizates with very low residual monomer content The invention relates to a method for producing water-soluble or water-swellable polymerizates with a low residual monomer content from acrylic acid and/or acrylic acid derivatives. The method is characterized by the addition of a nitrogen compound to the... | 04/22/2003 |
| 6541579 | Free radical inhibitors for quenching aqueous phase polymer growth and related methods An aqueous phase inhibitor for quenching free radical polymerization comprising a free radical quenching agent having a hydrophilic tail is disclosed, as well as a coating and related methods. In one embodiment, the free radical quenching agent can either... | 04/01/2003 |
| 6525147 | Use of diamines and alkanolamines to inhibit unsaturated monomer polymerization It has been discovered that the polymerization of unsaturated compounds, such as butadiene, may be inhibited by the addition of a diene and/or alkanolamine inhibitor. The inhibitor is believed to catalytically destroy peroxides present, such as hydrogen p... | 02/25/2003 |
| 6518453 | Method for stabilizing chemical compounds containing at least one ethylenically unsaturated bond in order to prevent undesirable radical polymerization In a process for stabilizing chemical compounds having at least one ethylenically unsaturated bond to undesired free radical polymerization, a nitroxyl radical and a chemical compound containing phosphorus in chemically bonded form are added to the unsatu... | 02/11/2003 |
| 6518374 | Method of immediately terminating free-radical polymerisation processes Free radical polymerizations immediately terminated by a process comprising the addition of an inhibitor solution which contains phenothiazine and at least 50% (w/w) N-alkylpyrrolidone to a system undergoing free radical polymerization, wherein the inhibi... | 02/11/2003 |
