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Class Information
Number: 526/104
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Polymers from only ethylenic monomers or processes of polymerizing, polymerizable compositions containing only ethylenic monomers as reactants or processes of preparing > Polymerizing in the presence of a specified material other than monomer > Material contains transition metal or compound thereof > Material contains transition metal oxide (other than peroxide) > Group vib metal oxide (cr, mo, w)
Description: Subject matter wherein the specified material contains an oxide of a Group VIB metal, i.e., Cr, Mo, W.










Sub-classes under this class:

Class Number Class Name Patents
526/105 Contains non-transition elemental metal, hydride thereof, or nontransition metal to carbon atom bond 107
526/106 Metal oxide is of chromium 338


Patents under this class:
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Patent Number Title Of Patent Date Issued
8481658 Method for transitioning between incompatible olefin polymerization catalyst systems Jul. 9, 2013
8124698 Diene polymerisation Feb. 28, 2012
8088870 Methods for applying solution catalysts to reactor surfaces Jan. 3, 2012
7956138 Catalyst system for olefin polymerization and polymers produced therefrom Jun. 7, 2011
7951881 Polyethylene film having improved barrier properties and methods of making same May. 31, 2011
7915357 Blow molding polyethylene resins Mar. 29, 2011
7910669 Methods of preparing a polymerization catalyst Mar. 22, 2011
7851400 Multimodal polyethylene obtained with multilayer chromium catalyst Dec. 14, 2010
7491776 Polymerization process Feb. 17, 2009
7381778 Method of preparing a treated support Jun. 3, 2008
7375169 Method for catalyst preparation and improved polyethylene blow molding resin May. 20, 2008
7368516 Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst May. 6, 2008
7271124 Process to produce polymers Sep. 18, 2007
7271122 Multimodal polyethylene obtained with multilayer chromium catalyst Sep. 18, 2007
7262259 Method of preparing a treated support Aug. 28, 2007
7250474 Physical blends of polyethylenes Jul. 31, 2007
7232551 Fluidized bed method and reactor for the treatment of catalysts and catalyst carriers Jun. 19, 2007
7214642 Methods of preparing active chromium/alumina catalysts via treatment with sulfate May. 8, 2007
7202313 Chromium-based catalysts in mineral oil for production of polyethylene Apr. 10, 2007
6989344 Supported chromium oxide catalyst for the production of broad molecular weight polyethylene Jan. 24, 2006
6982238 Supported catalyst Jan. 3, 2006
6855781 Process to produce polymers Feb. 15, 2005
6833416 Methods of polymerizing olefin monomers with mixed catalyst systems Dec. 21, 2004
6815511 Continuous withdrawal from high solids slurry polymerization Nov. 9, 2004
6806324 High solids slurry polymerization using heat exchange to condense the flashed diluent Oct. 19, 2004
6747085 Conjugated diene polymer and rubber composition Jun. 8, 2004
6743869 High polymer solids slurry polymerization employing 1-olefin comonomer Jun. 1, 2004
6734131 Heterogeneous chromium catalysts and processes of polymerization of olefins using same May. 11, 2004
6689829 Process for imparting improved whiteness to polyolefin resins Feb. 10, 2004
6670302 High pore volume polyolefin catalyst Dec. 30, 2003
6657023 Polymerization process Dec. 2, 2003
6642324 Process that produces polymers Nov. 4, 2003
6632897 Use of nano-scaled metal oxide particles as polymerization catalysts Oct. 14, 2003
6600011 Process for purification and drying of polymer hydrogels Jul. 29, 2003
6583241 Process for making MVTR resin Jun. 24, 2003
6531565 MVTR resin produced with post-titanated Cr/Si/Ti catalyst Mar. 11, 2003
6528565 Process for imparting improved whiteness to polyolefin resins Mar. 4, 2003
6518375 Catalyst for the production of ethylene polymer and process for producing ethylene polymer Feb. 11, 2003
6495638 Process to produce polymers Dec. 17, 2002
6489428 Titanated chromium-based catalysts to produce polyethylene Dec. 3, 2002
6441110 Method for producing halogen-free reactive polyisobutene Aug. 27, 2002
6417131 Production of polyethylene having a broad molecular weight distribution Jul. 9, 2002
6384154 Preparation of halogen-free, reactive polyisobutene May. 7, 2002
6348635 Start-up polymerization process Feb. 19, 2002
6265501 Treatment of metathesis catalysts for olefins in a vibratory helicoidal conveyor Jul. 24, 2001
6255418 Catalysts containing organochromium compounds and their use for polymerizing alkenes Jul. 3, 2001
6245866 Production of polyethlene Jun. 12, 2001
6242543 Process for producing polyethylenes having a broad molecular weight distribution, and a catalyst system used thereby Jun. 5, 2001
6239235 High solids slurry polymerization May. 29, 2001
6204346 Polymerization process Mar. 20, 2001

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