| Patent Number |
Title Of Patent |
Date Issued |
| 7420097 |
Synthesis of 6-aryl-6-alkyl fulvenes, 6-aryl-6-alkenyl fulvenes, and related compounds |
September 2, 2008 |
| The present invention provides a method of making fulvenes, particularly 6-aryl-6-alkylfulvenes, 6-aryl-6-alkenylfulvenes, and related compounds, by combining alkyl- or alkenyl-arylketones with magnesium cyclopentadienyl reagents in nonprotic, including ethereal, solvents. The use of |
| 7417097 |
Organometal compound catalyst |
August 26, 2008 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 7390764 |
Organometal catalyst compositions |
June 24, 2008 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition co |
| 7312283 |
Polymerization catalysts and process for producing bimodal polymers in a single reactor |
December 25, 2007 |
| Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. Methods for preparing and using such catalysts to produce polyolefins are also provided. The compositions and methods discl |
| 7307133 |
Polymers having broad molecular weight distributions and methods of making the same |
December 11, 2007 |
| Methods of polymerizing at least one olefin include contacting the olefin with a catalyst comprising chromium and with a cocatalyst comprising a non-transition metal cyclopentadienyl (Cp) compound. The polymerization may be performed in the presence of hydrogen. Using the cocatalyst in |
| 7294599 |
Acidic activator-supports and catalysts for olefin polymerization |
November 13, 2007 |
| This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst composition. In one aspect, this invention encompasses precontacting a metallocene with an olefin o |
| 7247594 |
Catalysts for olefin polymerization |
July 24, 2007 |
| This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a catalyst composition. One aspect of this invention is the formation and use of a catalyst c |
| 7226886 |
Polymerization catalysts and process for producing bimodal polymers in a single reactor |
June 5, 2007 |
| Catalyst compositions comprising a first metallocene compound, a second metallocene compound, an activator-support, and an organoaluminum compound are provided. An improved method for preparing cyclopentadienyl complexes used to produce polyolefins is also provided. |
| 7199073 |
Resins that yield low haze films and the process for their production |
April 3, 2007 |
| Catalyst compositions comprising a first metallocene compound, a second metallocene compound, a third metallocene compound, a chemically-treated solid oxide, and an organoaluminum compound are provided. Methods for preparing and using the catalyst and polyolefins are also provided. The |
| 7163906 |
Organochromium/metallocene combination catalysts for producing bimodal resins |
January 16, 2007 |
| This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst |
| 7148298 |
Polymerization catalysts for producing polymers with low levels of long chain branching |
December 12, 2006 |
| This invention relates to catalyst compositions, methods, and polymers encompassing a Group 4 metallocene with bridging .eta..sup.5-cyclopentadienyl-type ligands, in combination with a cocatalyst and an activator-support. The compositions and methods disclosed herein provide ethylene |
| 7119153 |
Dual metallocene catalyst for producing film resins with good machine direction (MD) elmendorf t |
October 10, 2006 |
| This invention relates to catalyst compositions comprising a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. This invention also relates to methods to prepare and use the catalyst compos |
| 7109277 |
Polymerization catalysts |
September 19, 2006 |
| A process to produce a polymer is provided. The process comprising contacting a treated solid oxide compound, an organometal compound, and an organoaluminum compound in the presence of an alpha olefin under polymerization conditions to produce the polymer. |
| 7094857 |
Ethylene polymers and copolymers with high optical opacity |
August 22, 2006 |
| This invention relates to the field of metal-catalyzed olefin polymerization methods and the polymers and films prepared therefrom. In one aspect, this invention provides polyethylene and ethylene/.alpha.-olefin copolymers formed in the presence of tightly-bridged metallocene catalys |
| 7041753 |
Organometal catalyst compositions |
May 9, 2006 |
| This invention provides oxide matrix compositions that can be utilized in catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. The oxide matrix composition comprises residual mineral components and an oxide precursor. The catalyst composit |
| 7041617 |
Catalyst compositions and polyolefins for extrusion coating applications |
May 9, 2006 |
| This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst |
| 7026494 |
Polymerization catalysts for producing high melt index polymers without the use of hydrogen |
April 11, 2006 |
| Various catalyst compositions including the contact product of at least one ansa-metallocene compound, at least one organoaluminum compound, and at least one activator-support are disclosed. Processes for forming such compositions and for forming polyolefins with such compositions are al |
| 6992032 |
Organometal catalyst compositions |
January 31, 2006 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6984603 |
Organometal catalyst compositions |
January 10, 2006 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6982306 |
Stannoxy-substituted metallocene catalysts for olefin and acetylene polymerization |
January 3, 2006 |
| This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a catalyst composition. One aspect of this invention is the formation and use of a catalyst c |
| 6977235 |
Catalyst systems comprising a calcined chromium catalyst and a non-transition metal cyclopentadi |
December 20, 2005 |
| According to an embodiment, catalyst systems for polymerizing olefins include a catalyst comprising chromium and a cocatalyst comprising a substituted or unsubstituted non-transition metal cyclopentadienyl compound (Cp). The catalyst also comprises an inorganic oxide support. In an e |
| 6936667 |
Polymerization catalyst compositions and processes to produce polymers and bimodal polymers |
August 30, 2005 |
| A process to produce a first catalyst composition is provided. The process comprises contacting at least one first organometal compound and at least one activator to produce the first catalyst composition. The activator is selected from the group consisting of aluminoxanes, fluoro-organo |
| 6878785 |
Organometal compound catalyst |
April 12, 2005 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6858687 |
Organometal catalyst compositions |
February 22, 2005 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6838533 |
Organometal catalyst composition |
January 4, 2005 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6833338 |
Organometal compound catalyst |
December 21, 2004 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6831141 |
Process for producing polymers |
December 14, 2004 |
| A process of using a catalyst composition to polymerize at least one monomer to produce a polymer. The process comprises contacting the catalyst composition and at least one monomer in a polymerization zone under polymerization conditions to produce the polymer. The catalyst composit |
| 6750302 |
Organometal catalyst compositions |
June 15, 2004 |
| A polymerization catalyst is disclosed, wherein the catalyst comprises: (a) a metallocene of Ti, Zr or Hf, (b) an organoaluminum compound, and (c) a treated solid oxide support which comprises fluorine and chromium. |
| 6691727 |
Device and method for protecting a subterranean pipe from damage during excavation |
February 17, 2004 |
| A system and method is claimed for protecting sections of a buried utility pipe that will eventually be excavated and exposed for tapping purposes. The system includes a protective collar that is applied to the utility pipe before the utility pipe is buried. When the utility pipe is to b |
| 6667274 |
Polymerization catalysts |
December 23, 2003 |
| A process to produce a polymer is provided. The process comprising contacting a treated solid oxide compound, an organometal compound, and an organoaluminum compound in the presence of an alpha olefin under polymerization conditions to produce the polymer. |
| 6653416 |
Polymerization process utilizing organometal catalyst compositions and the polymer produced ther |
November 25, 2003 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6632894 |
Organometal catalyst compositions |
October 14, 2003 |
| This invention provides oxide matrix compositions that can be utilized in catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. The oxide matrix composition comprises residual mineral components and an oxide precursor. The catalyst composit |
| 6613852 |
Organometal catalyst compositions |
September 2, 2003 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6613712 |
Organometal catalyst compositions with solid oxide supports treated with fluorine and boron |
September 2, 2003 |
| The invention provides for compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein the composition comprises a post-contacted organometal compound, a post-contacted organoaluminum compound, and a post-contacted solid oxide compound treated with bo |
| 6576583 |
Organometal catalyst composition |
June 10, 2003 |
| This invention provides a process for producing a catalyst composition comprising contacting at least one group 4 metallocene, at least one organoaluminum compound, and at least one solid. The solid is selected from the group consisting of titanium tetrafluoride, zirconium tetrafluor |
| 6573344 |
Propylene polymerization process |
June 3, 2003 |
| A process to produce a propylene polymer is provided. The process comprising contacting at least one organometal compound, at least one organoaluminum compound, at least one treated solid oxide compound, propylene, and ethylene in a polymerization zone under polymerization conditions |
| 6548442 |
Organometal compound catalyst |
April 15, 2003 |
| This invention is directed to an organometal compound catalyst that is useful for polymerizing at least one monomer to produce a polymer. The catalyst is produced by combining a titanium, zirconium or hafnium organometal compound, preferably a metallocene, at least one organoaluminum |
| 6548441 |
Organometal catalyst compositions |
April 15, 2003 |
| This invention provides a catalyst composition for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises an organometal compound, an organoaluminum compound, and a treated solid oxide compound comprising nickel, a halogen, and a solid oxi |
| 6528448 |
Polymerization catalyst compositions and processes to produce polymers and bimodal polymers |
March 4, 2003 |
| A process to produce a first catalyst composition is provided. The process comprises contacting at least one first organometal compound, oxygen bridged mono-cyclopentadienyl transition metal dimer, and at least one activator to produce the first catalyst composition. The activator is |
| 6524987 |
Organometal catalyst compositions |
February 25, 2003 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6469117 |
Dialkenyl-tricyclic-nonaromatic/olefin polymers |
October 22, 2002 |
| A process is provided to produce a dialkenyl-tricyclic-nonaromatic/olefin polymer. The process comprises contacting at least one dialkenyl-tricyclic-nonaromatic compound, at least one olefin, at least one titanium complex, and at least one aluminoxane in a polymerization zone under p |
| 6395666 |
Organometal catalyst compositions |
May 28, 2002 |
| This invention provides catalyst composition for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises as organometal compound, as organoaluminum compound, and a fluorided solid oxide compound. |
| 6391816 |
Organometal compound catalyst |
May 21, 2002 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6380329 |
Polymerization catalysts and processes therefor |
April 30, 2002 |
| A process is provided which comprises preparing heterogeneous or homogeneous catalyst systems comprising cyclodisilizane complexes of Group IV metals wherein said metal is selected from consisting of titanium, zirconium and hafnium; and a cocatalyst selected from the group consisting |
| 6376415 |
Organometal catalyst compositions |
April 23, 2002 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce said polymer, wherein said catalyst compositio |
| 6355594 |
Organometal catalyst compositions |
March 12, 2002 |
| This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition c |
| 6316553 |
Process for producing polymers using a composition comprising an organometal compound, a treated |
November 13, 2001 |
| A process of using a catalyst composition to polymerize at least one monomer to produce a polymer. The process comprising contacting the catalyst composition, at least one monomer in a polymerization zone under polymerization conditions to produce the polymer. The catalyst composition |
| 6300271 |
Compositions that can produce polymers |
October 9, 2001 |
| This invention provides a compositions that are useful for polymerizing at least one monomer into at least one polymer. |
| 6239300 |
Metallocene production process |
May 29, 2001 |
| A number of process steps are provided that can be combined to produce bridged cyclopentadienyl-fluorenyl metallocenes. The process steps include production of a cyclopentadiene compound from dicyclopentadiene; production and recovery of a fulvene compound using the cyclopentadiene c |
| 6107230 |
Compositions that can produce polymers |
August 22, 2000 |
| This invention provides compositions for polymerizing at least one monomer to produce a polymer. The compositions are produced by a process comprising contacting at least one organometal compound, at least one organoaluminum compound, and at least one treated solid oxide compound. Th |
