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Class Information
Number: 526/105
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) > Contains non-transition elemental metal, hydride thereof, or nontransition metal to carbon atom bond
Description: Subject matter wherein the specified material contains an elemental nonheavy metal, or contains a hydride of a nonheavy metal, or contains a compound having a nonheavy metal to carbon bond.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8399580 Additives to chromium catalyst mix tank Mar. 19, 2013
8101691 Systems and methods for fabricating polymers Jan. 24, 2012
7745551 Low gel chromium catalysis Jun. 29, 2010
7632901 Catalyst system and process Dec. 15, 2009
7563851 Production of broad molecular weight polyethylene Jul. 21, 2009
7504463 Production of broad molecular weight polyethylene Mar. 17, 2009
7214642 Methods of preparing active chromium/alumina catalysts via treatment with sulfate May. 8, 2007
7067598 Process for the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor Jun. 27, 2006
6908885 Gel comprised of a poly-.alpha.-1,4-glucan and starch Jun. 21, 2005
6849699 Vapor-phase fluidized-bed process and ethylene homopolymers and copolymers produced thereby Feb. 1, 2005
6750302 Organometal catalyst compositions Jun. 15, 2004
6649709 Gas phase fluidized bed method and ethylene homo- and copolymers obtained using said method Nov. 18, 2003
6646069 Ethylene polymers and method for producing the same Nov. 11, 2003
6639031 Coreactive supporting materials for heterogenization of catalysts, cocatalysts and ligands Oct. 28, 2003
6639028 Process for the continuous gas-phase (co-)polymerization of olefins in a fluidized bed reactor Oct. 28, 2003
6632896 Ethylene polymerization Oct. 14, 2003
6617404 Chromium phyllosilicate clay .alpha.-olefin catalysts Sep. 9, 2003
6600011 Process for purification and drying of polymer hydrogels Jul. 29, 2003
6541581 Polyethylenes obtained by use of dual site catalyst Apr. 1, 2003
6465586 Polymerization catalyst and process Oct. 15, 2002
6423792 Production of polyethylene Jul. 23, 2002
6417131 Production of polyethylene having a broad molecular weight distribution Jul. 9, 2002
6407192 Production of polyethylene for blow molding Jun. 18, 2002
6372867 Process for the gas phase polymerization of olefins Apr. 16, 2002
6150480 Production of polyethylene for blow molding Nov. 21, 2000
6040399 Preparation method of ethylene base polymer Mar. 21, 2000
5866661 Ethylene polymerization processes and products thereof Feb. 2, 1999
5863854 Catalyst system for olefin polymerization and process for the polymerization of at least one olefin in the presence of this catalyst system Jan. 26, 1999
5852144 Catalyst compositions and catalytic processes Dec. 22, 1998
5654249 Chromium catalyst compositions and polymerization processes therewith Aug. 5, 1997
5599887 Chromium catalyst compositions and ethylene polymerization processes therewith Feb. 4, 1997
RE35346 Process for the polymerisation of ethylene or the copolymerisation of ethylene and alpha-olefins in a fluidised bed in the presence of a chromium based catalyst Oct. 1, 1996
5557021 Phillips catalyst and its use for the preparation of ethylene/.alpha.-olefin copolymers Sep. 17, 1996
RE35324 Prepolymers of olefins containing a chromium oxide and a granular refractory oxide support Sep. 3, 1996
5393719 Catalysts for olefin polymerization Feb. 28, 1995
5364915 Ethylene polymerization process Nov. 15, 1994
5360879 Polymerization catalysts and processes Nov. 1, 1994
5331070 Process for olefin polymerization Jul. 19, 1994
5324697 Phillips catalyst and its use for preparing ethylene homopolymers and copolymers Jun. 28, 1994
5284926 Catalyst system and process Feb. 8, 1994
5198400 Mixed chromium catalysts and polymerizations utilizing same Mar. 30, 1993
5165998 Prepolymers of olefins containing a chromiumoxide and a granular refractory oxide support Nov. 24, 1992
5166279 Process for the gas phase (co-)polymerization of ethylene Nov. 24, 1992
5096868 Catalyst composition for polymerizing alpha-olefins and alpha-olefins polymerization therewith Mar. 17, 1992
5075395 Process for the starting of the polymerization of ethylene or copolymerization of ethylene and at least one other alpha-olefin in the gas phase in the presence of a catalyst based on chromium Dec. 24, 1991
5037911 Polymerization with surface silicated and fluorided alumina supported chromium Aug. 6, 1991
5010152 Polymerization process utilizing chromium on an acid agglomerated refractory gel Apr. 23, 1991
5010151 Method for preparing ethylene polymers Apr. 23, 1991
5001204 Alumina phosphated with partial ester Mar. 19, 1991
4981927 Chromium catalyst compositions and polymerization utilizing same Jan. 1, 1991

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