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PROCESS FOR PRODUCING LLDPE RESINS . Field of the Invention . The present invention is directed to a method of producing ethylene polymers. Especially, the present invention is directed to a method of making multimodal ethylene polymers where the method comprises polymerising ethylene in at least two polymerisation stages.

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PROCESS FOR PRODUCING ALFA-OLEFIN POLYMERS The present invention relates to a process for producing poly-a-olefin compositions, in particularly polypropylene copolymer compositions having uniform quality with desired stiffness and impact strength properties and being suitable for a wide range of applications including different packaging applications.

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Method 1631, Revision E: Mercury in Water by Oxidation ...

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WO1996032420A1 - Method for preventing fouling and ...

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University of South Florida Scholar Commons USF Patents December 2013 Method of preventing biofouling using an anti-fouling bio-hydrogel composition. Method and system of preventing fouling and . Method and system of preventing fouling and corrosion of biomedical devices and structures Number of patents in Portfolio can not be more than 2000

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A method for preventing sheeting problems in a gas phase reactor in such multi-phase polymerization process, which comprises at least one loop reactor followed by a gas phase reactor, where the polymerization is continued in the presence of added monomers, and in which process a fouling preventive agent is used to prevent fouling or sheeting in the reactors.

PROCESS FOR PRODUCING ALFA-OLEFIN POLYMERS

Method 1631, Revision E Mercury in Water by Oxidation, Purge and Trap, and Cold Vapor Atomic Fluorescence Spectrometry 1.0 Scope and Application 1.1 Method 1631, Revision E (the "Method") is for determination of mercury (Hg) in filtered and unfiltered water by oxidation, purge and trap, desorption, and cold-vapor atomic fluorescence

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An olefin or mixture of olefins is polymerized in a hydrocarbon diluent in a turbulent reaction zone to produce particles of polymer which are substantially insoluble in the diluent (particle form process). Fouling of the reactor by adherence of polymer particles to the walls of the reactor is reduced by adding to the reaction medium a composition which comprises a mixture of (a) a polysulfone ...

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Method Preventing Us6096837 - tvpdcollege.in Method for preventing fouling and sheeting in gas … United States Patent US6096837 Note: If you have problems …

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Method of drying a paper web in a press arrangement. The method includes moving the paper web, disposed between at least one first fabric and at least one second fabric, between a support surface and a pressure producing element and moving a fluid through the paper web, the at least one first and second fabrics, and the support surface.

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Nov 11, 2003· A process for the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor using a Ziegler-Nata type catalyst wherein the polymerisation is performed in the presence of a process aid additive selected from at least one of (1) a polysulphone copolymer; (2) a polymeric polyamine or (3) an oil-soluble sulphonic acid.

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Jan 30, 2001· Catalyst composition and methods for its preparation and use in a polymerization process ... WO1996032420A1: 1996-10-17: METHOD FOR PREVENTING FOULING AND SHEETING IN GAS PHASE REACTORS: ... The present invention relates to a catalyst composition and methods for preparing the catalyst composition and for its use in a process for polymerizing ...

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method to obtain total filterable particulate if you sample within 90 to 110 percent of isokinetic flow, the number of sampling points is the same as required by Method 5 of appendix A-3 to part 60 or Method 17 of appendix A-6 to part 60, and the filter temperature is within an acceptable

PROCESS FOR PRODUCING LLDPE RESINS - BOREALIS AG - …

Nov 11, 2003· The present invention also relates to a process for preventing fouling during the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor using a Ziegler-Natta type catalyst. Processes for the co-polymerisation of olefins in the gas phase are well known in the art.

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Method 1007.0: Mysid, Mysidopsis bahia, Survival, Growth, and Fecundity Test; Chronic Toxicity . Excerpt from: Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Marine and Estuarine Organisms . 3rd edition (2002) EPA-821-R-02-014

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Oct 28, 2003· A process for the gas-phase (co-)polymerization of olefins in a fluidized bed reactor using a chromium oxide catalyst. The polymerization is performed in …