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| Number | Title | Issue Date |
| 8187546 | Method of operating a high pressure ethylene polymerisation unit The invention relates to a method of operating a high pressure ethylene polymerization unit comprising a tubular reactor, the method characterized in that the electrical conductivity of the aqueous cooling medium is monitored in at least one location. Furthermore, t... | 05/29/2012 |
| 8178050 | Process for feeding a catalyst in a polymerization reactor A process for introducing a catalyst powder into a polymerization reactor comprising: a) metering the catalyst powder by means of a rotary valve comprising a stator, a rotor and sealing means arranged between said stator and said rotor; b) transferring... | 05/15/2012 |
| 8163246 | Spouted-fluidized bed-type olefin polymerization reactor An olefin polymerization reactor according to the present invention comprises: a vertically extending cylinder; a decreasing diameter portion on the cylinder, having an inside diameter that decreases progressively downward, and having a gas inlet orifice at a bottom... | 04/24/2012 |
| 8124018 | Modular device for the continuous degassing and production of polymer precondensate with high reaction product surface to volume ratio with gentle treatment of the reaction product mass A modular device for the continuous degas sing of reaction products, such as of a carboxylic acid or a polycarboxylic acid with a multi-functional alcohol suitable for application in the production of precondensates (or also prepolymers), has a heated enclosure in w... | 02/28/2012 |
| 8114353 | Continuous catalyst activator Methods and systems for preparing catalyst, such as chromium catalysts, are provided. The valence of at least a portion of the catalyst sent to an activator is changed from Cr(III) to Cr(VI). The catalyst is prepared or activated continuously using a fluidization be... | 02/14/2012 |
| 8025846 | Process for introducing a portion withdrawn from at least one production charge of annular coated catalysts K into a reaction tube of a tube bundle reactor A process for introducing annular coated catalysts K into a reaction tube of a tube bundle reactor, in which adhering pairs of annular coated catalysts K formed in the preparation of the annular coated catalysts K, before the introduction thereof into the reaction t... | 09/27/2011 |
| 8021620 | Apparatus for oligomerizing dilute ethylene The process and apparatus converts ethylene in a dilute ethylene stream that may be derived from an FCC product to heavier hydrocarbons. The catalyst may be an amorphous silica-alumina base with a Group VIII and/or VIB metal. The catalyst is resistant to feed impuri... | 09/20/2011 |
| 7998420 | Method and device for producing vacuum in the production of polyesters and copolyesters The invention relates to a method and a device for producing vacuum in the production of polyesters and copolyesters; unrectified vapors from at least one esterification or transesterification stage is preferably used as a driving medium in gas jet pumps for produci... | 08/16/2011 |
| 7993593 | Olefin polymerization reactor, polyolefin production system, and polyolefin production process An olefin polymerization reactor of the present invention includes a cylinder which extends vertically, and a decreasing diameter member which is formed on the cylinder, has an inside diameter that decreases progressively downward and has a gas inlet orifice at a bo... | 08/09/2011 |
| 7943094 | Polyester production system employing horizontally elongated esterification vessel A polyester production process employing an esterification system that utilizes a horizontally elongated esterification vessel as an esterification reactor and/or a vapor-liquid disengagement vessel. ... | 05/17/2011 |
| 7850926 | Process of discontinuous polycondensation and stirring reactor thereof A process for the discontinuous production of granules from polycondensation polymers by precondensation of an oligomer at 5 to 400 mbar and subsequent polycondensation in a stirring reactor and subsequent granulation. In the vicinity of the outlet port, the density... | 12/14/2010 |
| 7837950 | Apparatus for the production of polyethylene and ethylene copolymers The invention provides an apparatus and a process for the high pressure polymerization of ethylene, optionally with one or more comonomers, in which unreacted monomer is separated from the polymer in a separation system having at least first, second and third separa... | 11/23/2010 |
| 7776278 | Apparatus and process for the gas-phase polymerization of olefins Apparatus for the polymerization of olefins, in particular ethylene, comprising a gas-phase fluidized-bed reactor (1), a product offtake line (15) for taking polymer particles either continuously or discontinuously from the reactor (1), which li... | 08/17/2010 |
| 7771667 | Polymerization quench method and system A transfer method and system (8) to discharge overflow slurry from a polymerization reactor (10) to a tank (14). The method includes thermally isolating a conduit extension (28) at a distal end of a transfer line (20) from a quench... | 08/10/2010 |
| 7718137 | Reactor with optimized internal tray design A system for processing large quantities of a reaction medium while maintaining the reaction medium in sheets. The system includes a reactor having a plurality of vertically-spaced downwardly-sloped trays over which the reaction medium flows while it is subjected to... | 05/18/2010 |
| 7713490 | Particulate flow control process A process is disclosed for providing a flow of particulate matter such as a catalyst to a reactor, comprising intermittently adding said particulate matter and a diluent to a mixing tank, and continuously withdrawing a slurry of particulate matter in diluent from th... | 05/11/2010 |
| 7628961 | Method and apparatus for amplification of nucleic acid sequences by using thermal convection The present invention provides a nucleic acid sequence amplification method and apparatuses thereof that are simple in the design and easy to miniaturize and integrate into complex apparatuses, with capability of using DNA polymerases that are not thermostable. In t... | 12/08/2009 |
| 7622085 | Baffle assembly module for vertical staged polymerization reactors The present invention provides an assembly for use in vertical, gravity flow driven polymerization reactors for combinations of high viscosity, high throughput, and shallow polymer depths. The baffle assembly module of the invention includes a support structure havi... | 11/24/2009 |
| 7608225 | Tower reactor and use thereof for the continuous production of high molecular weight polyesters The invention relates to a tower reactor and the use thereof for producing high-molecular weight polyesters, such as e.g. polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polynaphthalene terephthalate (PEN), polytrimethylene terephthalate (PTT) an... | 10/27/2009 |
| 7563412 | Reactor for solid phase synthesis A Reactor (1) for solid phase synthesis comprises a vessel (2), a plurality of filters (3) arranged in the vessel (2) and a plurality of filtrate outlets (4) for evacuating the filtrate out of the filters (3). Each filter ( | 07/21/2009 |
| 7563413 | Compressor for high pressure polymerization The invention provides a compressor for use as a secondary compressor for an ethylene polymerization tubular reactor comprising a motor and at least two compressor frames, at least one of the compressor frames being coupled to the motor by means of a contoured diaph... | 07/21/2009 |
| 7494626 | Methods of delivering catalyst systems for propylene polymerization A polymerization process is provided. For example, a polymerization process is described, including providing a catalyst slurry having a metallocene catalyst and a first oil, providing a transport medium including a second oil and combining the transport medium and ... | 02/24/2009 |
| 7481981 | Apparatus for the esterification of a fatty acid The apparatus for the esterification of a fatty acid F includes a column with a packing. In addition to functioning as a catalytic reactor, the packing functions as a stripping section. A heteregenous catalysis of a fatty acid is carried out with an alcohol used in ... | 01/27/2009 |
| 7479258 | Method for producing an aromatic polycarbonate It is a task of the present invention to provide a method for producing a high quality, high performance aromatic polycarbonate (which is colorless and has excellent mechanical properties) from a molten aromatic polycarbonate prepolymer obtained by reacting an aroma... | 01/20/2009 |
| 7435392 | Scalable continuous production system A parallel chemical production system producing a desired product by operating a plurality of reactors in parallel. The fluidic properties of each of the reactors are identical to the properties of a test reactor employed to determine conditions for producing the pr... | 10/14/2008 |
| 7435393 | Baffle assembly module for vertical staged polymerization reactors The present invention provides an assembly for use in vertical, gravity flow driven polymerization reactors for combinations of high viscosity, high throughput, and shallow polymer depths. The baffle assembly module of the invention includes a support structure havi... | 10/14/2008 |
| 7435391 | Light-mediated micro-chemical reactors A chemical reactor includes two substrates that are joined along a surface and a chemical reaction chamber formed between the substrates. The chemical reaction chamber has a hollow interior and one or more light reflectors located along walls of the hollow interior.... | 10/14/2008 |
| 7435390 | Nucleic acid synthesizers The present invention relates to nucleic acid synthesizers and methods of using and modifying nucleic acid synthesizers. For example, the present invention provides highly efficient, reliable, and safe synthesizers that find use, for example, in high throughput and ... | 10/14/2008 |
| 7431907 | Apparatus for removing vaporized unreacted isocyanate from a gaseous waste stream An apparatus includes a container that defines an interior. The interior is isolated from ambient atmosphere for receiving a composition that includes isocyanate. A conduit extends into the container and defines a channel therethrough. An interior of the container i... | 10/07/2008 |
| 7419830 | Plural reaction chamber catalytic testing device and method for its use in catalyst testing A catalytic testing device comprising a reaction block comprising a set of reaction chambers, each chamber comprising a fluid inlet and outlet connected to an outgoing fluid duct connected to analysis means, fluid ... | 09/02/2008 |
| 7402636 | Method and apparatus for decreasing polymer deposition The disclosure provides a slurry polymerization system and method to decrease polymer deposition on reactor surfaces using an oxygenate such as alcohol (16) supplied to the polymerization medium (32) separate from the catalyst feed (34). ... | 07/22/2008 |
| 7402288 | Reactor for testing catalyst systems A reactor for testing catalyst systems which has a plurality of catalyst tubes (2) which are arranged parallel to one another in the interior space of the reactor and whose ends are welded into tube plates and also has caps (3) at each end of the react... | 07/22/2008 |
| 7396513 | Liquid contacting of post-quench effluent vapor streams from oxygenate to olefins conversion to capture catalyst fines A process is provided for converting oxygenate to olefins from a fluidized bed reactor which comprises removal of catalyst fines from a quenched vaporous effluent by contacting with a liquid low in catalyst fines content, e.g., oxygenate feedstock, or by-product wat... | 07/08/2008 |
| 7390664 | Method and apparatus for high throughput catalysts screening and optimization The present invention relates to an apparatus and a process for the high-throughput, quick screening, optimization, regeneration, reduction and activation of catalysts. More specifically, the present invention is a method and apparatus to quickly screen, optimize an... | 06/24/2008 |
| 7384608 | Batchwise heating apparatus and method of drying a polyamide Described is an apparatus for the purpose of drying or solid phase polymerization of Polymer particles by batchwise heating the same in an atmosphere of inert gas or under reduced pressure. More particularly, described is batchwise heating apparatus which is capable... | 06/10/2008 |
| 7381788 | Method for continuous production of polyamide Provided is a continuous production method of a polyamide with stabilized polymerization degree and good quality, particularly an aromatic-containing polyamide. A continuous production method of a polyamide, comprising (a) a raw material preparation step of individu... | 06/03/2008 |
| 7371808 | Polymer treating method and apparatus A polymer treating method has the steps of: reacting a polymer compound with a reaction agent in a reaction vessel to generate a polymer treatment product; discharging the polymer treatment product containing the reaction agent from the reaction vessel; depressurizi... | 05/13/2008 |
| 7369227 | Imaging fluorescence signals using telecentricity The present invention relates to the field of DNA analysis. In particular, the present invention is directed to a device for the parallel imaging of fluorescence intensities at a plurality of sites as a measure for DNA hybridization. More particular, the present inv... | 05/06/2008 |
| 7368521 | Method of producing modified polycarbonate using spray-crystallizing method Provided is a method of producing a high-molecular weight modified polycarbonate resin. The method includes a melt condensation polymerization process in which transesterification and quick condensation polymerization are sequentially performed, a spray crystallizat... | 05/06/2008 |
| 7368089 | Systems and methods for producing fluorocarbons Systems and methods for producing fluorocarbons are provided that include contacting a saturated halogenated fluorocarbon with hydrogen and catalyst to produce a saturated hydrofluorocarbon and an unsaturated fluorocarbon. Aspects of the present invention describe s... | 05/06/2008 |
