| Patent Number |
Title Of Patent |
Date Issued |
| 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 |
| 6627707 |
Olefin polymerization processes and products thereof |
September 30, 2003 |
| A novel loop/slurry olefin polymerization process is provided which produces ultra-high molecular weight ethylene homopolymer. |
| 6617403 |
Olefin polymerization process |
September 9, 2003 |
| A copolymer of ethylene and a higher alpha-olefin having broadened melt processing windows and reduced melt fracture can be produced using a chromium-containing catalyst system and a trialkyl boron cocatalyst. The polymerization process must be carefully controlled to produce a copolymer |
| 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 |
| 6583235 |
Effect of aluminophosphate on catalyst systems comprising metal alkyl cocatalysts |
June 24, 2003 |
| Novel catalyst systems which comprise one or more diimine nickel (II) or palladium (II) complexes, one or more cocatalysts, and aluminophosphate are disclosed. Olefin polymerization processes using those catalyst systems are also disclosed. The inclusion of aluminophosphate can improve |
| 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 |
| 6569960 |
Process to produce polymers |
May 27, 2003 |
| A process to produce ethylene polymers is provided. Particularly, a process to produce ethylene polymers having a broad molecular weight distribution is provided. More particularly, a process to produce ethylene polymers that have low formation of smoke and odor during blow molding is pr |
| 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 |
| 6538077 |
Polymerization catalyst systems, methods of making and uses therefor |
March 25, 2003 |
| A novel magnesium treated silica-containing compound that is useful as a support for chromium based olefin polymerization catalyst systems is provided which produces ethylene polymers having with MWD's that promote good properties particularly in HMW film applications. |
| 6531550 |
Process for producing polymers |
March 11, 2003 |
| 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 |
| 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 |
| 6525148 |
Polymerization catalyst systems and processes therefor and therewith |
February 25, 2003 |
| A copolymer of ethylene and a higher alpha olefin, preferably 1-hexene, can be produced using an activated chromium containing catalyst system and a cocatalyst selected from the group consisting of trialkylboron, trialkylsiloxyaluminum, and a combination of trialkylboron and trialkyl |
| 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 |
| 6518376 |
Ethylene polymers |
February 11, 2003 |
| Disclosed herein are ethylene polymers having a density of 0.95 to 0.955, a melt index from 0.2 to 0.6 g/10 min., a high load melt index from 20 to 70 g/10 min., and a heterogeneity index from 10 to 16, and methods of preparing the same. In certain embodiments the polymers can have a she |
| 6495638 |
Process to produce polymers |
December 17, 2002 |
| A process is provided to produce a catalyst system. The process comprises blending a first component and a second component. The first component of the catalyst system comprises chromium on a support. The amount of chromium on the support is from about 0.05 to about 5 weight percent base |
| 6465586 |
Polymerization catalyst and process |
October 15, 2002 |
| An olefin polymerization process is provided comprising contacting an olefin monomer with chromium oxide on a titanium containing silica support having less than about 3 weight percent titanium in combination with an organoboron promoter. Polymers thus produced are useful for blow moldin |
| 6420579 |
Organometallic fluorenyl compounds, preparation, and use |
July 16, 2002 |
| Bridged and unbridged fluorenyl-containing metallocenes of the formula R".sub.x (FlR.sub.n)(CpR.sub.m)MQ.sub.k wherein Fl is a fluorenyl radical, Cp is a cyclopentadienyl, indenyl, tetrahydroindenyl, or fluorenyl radical, each R is an organo radical, R" is a structural bridge linking |
| 6403734 |
Organometallic fluorenyl compounds, preparation, and use |
June 11, 2002 |
| Bridged fluorenyl-containing metallocenes of metals of Groups 4-6 and their use in forming homopolymers of alpha olefins or polymers of ethylene and optionally minor amounts of alpha olefins, wherein in each case at least one of the cyclic groups of the bridged ligand is a fluorenyl and |
| 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 |
| 6388017 |
Process for producing a polymer composition |
May 14, 2002 |
| A process is provided for producing a polymer composition. The process comprises contacting a narrow molecular weight distribution base polymer and a high molecular weight polymer component. The base polymer is an ethylene polymer having a Mw/Mn less than about 5 and a melt flow index |
| 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 |
| 6329476 |
Olefin polymerization processes and products thereof |
December 11, 2001 |
| A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymers and ultra high molecular weight ethylene copolymers. Catalyst systems used are selected from the group consisting of inorganic oxide supported titanium-containin |
| 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. |
| 6294494 |
Olefin polymerization processes and products thereof |
September 25, 2001 |
| A novel loop/slurry olefin polymerization process is provided which produces ultra-high molecular weight ethylene homopolymer. |
| 6255413 |
Process to produce branched polymers from ethylene feedstock |
July 3, 2001 |
| A process for polymerizing ethylene feedstock to produce branched polymer of ethylene suitable for blow molding applications and having improved environmental stress crack resistance (ESCR). For example, a catalyst comprising chromium on silica is (1) calcined in air and (2) reduced in |
| 6204346 |
Polymerization process |
March 20, 2001 |
| Polymerization processes for ethylene and at least one mono-1-olefin comonomer having from about three to eight carbon atoms per molecule in the presence of a twice-aged catalyst system comprising chromium supported on a silica-titania support and a trialkylboron compound is provided. |
| 6201077 |
Process that produces polymers |
March 13, 2001 |
| A process comprising polymerizing ethylene, or polymerizing ethylene and at least one other olefin, to produce a polymer is provided. |
| 6197899 |
Olefin polymerization |
March 6, 2001 |
| A process is disclosed for the particle form polymerization of olefins. The process employs a titanium-containing having hydrocarbon soluble titanium components. The resulting catalyst is pretreated with an organometallic reducing agent prior to the introduction of the catalyst into the |
| 6194526 |
Processes that produce polymers |
February 27, 2001 |
| A process to produce a polymer is provided. The process comprises polymerizing monomers wherein the monomers comprise ethylene, 1-butene, and 1-hexene. The total amount of 1-butene and 1-hexene in the polymer is less than 10 mole percent of the polymer, and the mole ratio of 1-butene |
| 6174981 |
Polymerization process |
January 16, 2001 |
| Polymerization processes for ethylene and at least one mono-1-olefin comonomer having from about three to eight carbon atoms per molecule in the presence of a catalyst system comprising chromium supported on a silica-titania support and a trialkylboron compound is provided. Novel eth |
| 6165929 |
Compositions that can produce polymers |
December 26, 2000 |
| A process is provided to produce a composition of matter. The process comprises contacting at least one organometal compound, at least one solid mixed oxide compound, and at least one organoaluminum compound to produce the composition. |
| 6162936 |
Organometallic fluorenyl compounds, preparation, and use |
December 19, 2000 |
| Fluorenyl-containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition, polymers resulting from such polymerizations are disclosed. |
| 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 |
| 6037433 |
Olefin polymerization processes and products thereof |
March 14, 2000 |
| A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymer. |
| 6034186 |
Olefin polymerization processes and products thereof |
March 7, 2000 |
| A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymer. |
| 5866661 |
Ethylene polymerization processes and products thereof |
February 2, 1999 |
| A process to control the heat transfer coefficient in slurry olefin polymerization processes comprising shocking the polymerization reactor is provided. This shock comprises quickly decreasing and then restoring to normal operating conditions, the higher alpha-olefin comonomer to ethylen |
| 5654249 |
Chromium catalyst compositions and polymerization processes therewith |
August 5, 1997 |
| Chromium catalyst compositions are provided. These chromium catalyst compositions comprise at least two chromium catalyst systems that have a certain amount of chromium and a support that comprises silica and titania. the supports have certain pore volumes and surface areas. These ca |
| 5648439 |
Process for producing polyolefins |
July 15, 1997 |
| A process is provided to produce polyolefins having a multimodal molecular weight distribution at the molecular level by contacting at least one mono-1-olefin in a polymerization zone, under polymerization conditions, with two different types of supported chromium catalyst systems. The f |
| 5641842 |
Ethylene copolymerization process |
June 24, 1997 |
| A process is provided comprising copolymerizing, under copolymerizing conditions, ethylene with one or more alpha-olefins, using a catalyst system, where said catalyst system has been sized, to produce a lower-density-copolymer, where said lower-density-copolymer has a density lower |
| 5627247 |
Organometallic fluorenyl compounds and use thereof in olefin polymerization |
May 6, 1997 |
| Unbridged fluorenyl containing metallocenes are disclosed along with methods for making the metallocenes. Also disclosed are methods for using the metallocenes as polymerization catalysts. In addition, polymers resulting from such polymerizations are disclosed. |
| 5624877 |
Process for producing polyolefins |
April 29, 1997 |
| A process is provided to produce polyolefins having a multimodal molecular weight distribution at the molecular level by contacting at least one mono-1-olefin in a polymerization zone, under polymerization conditions, with two different types of supported chromium catalyst systems. The f |
| 5610247 |
Unbridged metallocenes of 9-substituted fluorenyl compounds and use thereof |
March 11, 1997 |
| 9-substituted fluorenyl-containing metallocenes and their use in the polymerization of olefins is disclosed. In addition, novel 9-cyclohexylfluorenyl or 9-phenylfluorenyl compounds are disclosed. Also methods for preparing such 9-substituted fluorenyl compounds are presented. |
| 5599887 |
Chromium catalyst compositions and ethylene polymerization processes therewith |
February 4, 1997 |
| This invention provides a chromium catalyst system that comprises[a] a support that comprises silica, wherein said support has a surface area to pore volume relationship as followswherein said f(SA) isand[b] a hexavalent chromium compound;wherein the surface concentration of said hexavalent chro |
| 5595953 |
Chromium catalyst compositions |
January 21, 1997 |
| Chromium catalyst compositions are provided. Theses chromium catalyst compositions can be used to polymerized olefins. The resulting polymerization product can have improved properties. |
