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Class Information
Number: 526/901
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Monomer polymerized in vapor state in presence of transition metal containing catalyst
Description: Processes of polymerizing a vaporized ethylenically unsaturated monomer utilizing a catalyst having at least one transition metal atom.










Patents under this class:
1 2 3 4 5 6 7 8 9 10 11

Patent Number Title Of Patent Date Issued
8653209 High vinyl terminated propylene based oligomers Feb. 18, 2014
8642711 Living radical polymerization method Feb. 4, 2014
8497330 Methods for polymerization using spray dried and slurried catalyst Jul. 30, 2013
8481658 Method for transitioning between incompatible olefin polymerization catalyst systems Jul. 9, 2013
8431658 Process for feeding a catalyst in a polymerization reactor Apr. 30, 2013
8367787 Polyolefin production Feb. 5, 2013
8354481 Method of controlling a polymerization reactor Jan. 15, 2013
8338548 Process for the gas-phase polymerization of olefins Dec. 25, 2012
8247342 Polymer supported chrome catalyst for olefins polymerization Aug. 21, 2012
8148478 Process for the gas-phase polymerization of olefins Apr. 3, 2012
8148481 Method for seed bed treatment for a polymerization reaction Apr. 3, 2012
8093341 Method of controlling a polymerization reactor Jan. 10, 2012
8084557 Gas-phase process for the polymerization of alpha-olefins Dec. 27, 2011
8084560 Polymerization processes using metallocene catalysts, their polymer products and end uses Dec. 27, 2011
8030390 Rubber composition for dynamic parts Oct. 4, 2011
7981982 Process for the preparation of soft propylene polymer compositions Jul. 19, 2011
7964677 Method of changing between incompatible polymerization catalysts in a gas-phase fluidized-bed reactor Jun. 21, 2011
7906599 Transition metal compound, catalyst for olefin polymerization containing the same, and method for producing propylene/ethylene-.alpha.-olefin block copolymer by using the catalyst Mar. 15, 2011
7875685 Gas phase polymerization and distributor plate passivation treatment Jan. 25, 2011
7858718 Catalysts based on 2-aryl-8-anilinoquinoline ligands Dec. 28, 2010
7858719 Polymerization process Dec. 28, 2010
7847036 Method for reducing and/or preventing production of excessively low density polymer product during polymerization transitions Dec. 7, 2010
7834107 Preparation of polyolefins having high molecular weights in the presence of an organic transition metal compound in a gas-phase fluidized-bed reactor Nov. 16, 2010
7799876 Method and apparatus for controlling static charge in polyolefin reactors Sep. 21, 2010
7790816 Method of maintaining heat transfer capacity in a polymerization reaction system Sep. 7, 2010
7763685 Method of discharging a polymer from a polymerization reactor Jul. 27, 2010
7739217 Monitoring polyethylene polymerization system utilizing the method for message suppression in rule based expert system Jun. 15, 2010
7714082 Gas-phase polymerization process to achieve a high particle density May. 11, 2010
7705095 Polymerisation process Apr. 27, 2010
7696289 Low molecular weight induced condensing agents Apr. 13, 2010
7687588 Process for the gas-phase polymerization of olefins Mar. 30, 2010
7671151 Olefin polymerization process Mar. 2, 2010
7652109 Use of an additivie for improving the flowability of fines and their reintroduction into a continuous gas-phase (co-) polymerisation of olefins reactor Jan. 26, 2010
7645841 Method and system to reduce polymerization reactor fouling Jan. 12, 2010
7629422 Process for transitioning between Ziegler-Natta-based and chromium-based catalysts Dec. 8, 2009
7625987 Gas phase polymerization and method of controlling same Dec. 1, 2009
7615597 Process for the copolymerization of ethylene Nov. 10, 2009
7588735 Production of polyethylene Sep. 15, 2009
7582710 Degassing process Sep. 1, 2009
7531606 Method for operating a gas phase polymerization reactor May. 12, 2009
7511109 Rotomoulding polyethylene and method for producing said rotomoulding polyethylene Mar. 31, 2009
7507780 Polymerization process Mar. 24, 2009
7482410 Processes for producing high density polyethylene Jan. 27, 2009
7482411 Gas-phase olefin polymerization process Jan. 27, 2009
7476715 Supported antistatic polymerization catalyst Jan. 13, 2009
7470759 Isotactic-atactic polypropylene and methods of making same Dec. 30, 2008
7452948 Supported polymerisation catalysts Nov. 18, 2008
7446156 Swirling fluidized-bed reactors for olefin polymerization Nov. 4, 2008
7423099 Process for producing polyolefin Sep. 9, 2008
7414098 Gas-phase catalytic polymerization of olefins Aug. 19, 2008

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