Patents by Inventor Feng-Jung Wu
Feng-Jung Wu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8163948Abstract: Processes are provided for producing transition metal amidos and/or imidos. In methods according to this invention, at least one halogenated transition metal, an amine compound and a solvent are combined, followed by the addition of an alkylated metal or a Grignard reagent to produce the transition metal amide and/or imido.Type: GrantFiled: March 2, 2009Date of Patent: April 24, 2012Assignee: Albemarle CorporationInventors: Jamie R. Strickler, Feng-Jung Wu
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Patent number: 8088939Abstract: Processes are provided for producing transition metal amides. In methods according to this invention, at least a halogenated transition metal and an amine are combined in a solvent to produce an intermediate composition and an alkylated metal or a Grignard reagent is added to the intermediate composition to produce the transition metal amide.Type: GrantFiled: September 5, 2008Date of Patent: January 3, 2012Assignee: Albemarle CorporationInventors: Jamie R. Strickler, Feng-Jung Wu
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Publication number: 20100331562Abstract: Processes are provided for producing transition metal amidos and/or imidos. In methods according to this invention, at least one halogenated transition metal, an amine compound and a solvent are combined, followed by the addition of an alkylated metal or a Grignard reagent to produce the transition metal amide and/or imido.Type: ApplicationFiled: March 2, 2009Publication date: December 30, 2010Applicant: ALBEMARLE CORPORATIONInventors: Jamie R. Strickler, Feng-Jung Wu
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Publication number: 20100204499Abstract: Processes are provided for producing transition metal amides. In methods according to this invention, at least a halogenated transition metal and an amine are combined in a solvent to produce an intermediate composition and an alkylated metal or a Grignard reagent is added to the intermediate composition to produce the transition metal amide.Type: ApplicationFiled: September 5, 2008Publication date: August 12, 2010Applicant: Albemarle CorporationInventors: Jamie R. Strickler, Feng-Jung Wu
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Patent number: 6812182Abstract: Surprisingly stable olefin polymerization co-catalysts formed from hydroxyaluminoxanes are revealed. In one embodiment of the invention, a solid composition of matter is formed from a hydroxyaluminoxane and a treating agent, whereby the rate of OH-decay for the solid composition is reduced as compared to that of the hydroxyaluminoxane. Processes for converting a hydroxyaluminoxane into a such a solid composition of matter, supported catalysts formed from such solid compositions of matter, as well as methods of their use, are described.Type: GrantFiled: September 5, 2001Date of Patent: November 2, 2004Assignee: Albemarle CorporationInventors: Feng-Jung Wu, Christopher G. Bauch, Larry S. Simeral, Jamie R. Strickler
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Publication number: 20040002420Abstract: Surprisingly stable olefin polymerization catalysts and co-catalysts formed from hydroxyaluminoxanes are revealed. In one embodiment of the invention, a solid composition of matter is formed from a hydroxyaluminoxane and a treating agent, whereby the rate of OH-decay for the solid composition is reduced as compared to that of the hydroxyaluminoxane. Gelatinous compositions of matter formed from hydroxyaluminoxane and having similar stability characteristics are also disclosed. Processes for converting a hydroxyaluminoxane into a such compositions of matter, supported catalysts formed from such co-catalyst compositions of matter, as well as methods of their use, are described.Type: ApplicationFiled: March 5, 2003Publication date: January 1, 2004Inventors: Feng-Jung Wu, Christopher G. Bauch, Larry S. Simeral, Jamie R. Strickler
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Patent number: 6562991Abstract: Gelatinous compositions of matter which are useful as polymerization catalyst components and are highly stable in terms of OH-decay rate, as well as similarly stable solid compositions of matter formed from such gelatinous compositions, are described. The gelatinous and solid compositions are formed from hydroxyaluminoxane. Also disclosed is a process comprising converting a hydroxyaluminoxane into a gelatinous composition of matter, whereby the rate of OH-decay for the composition is reduced as compared to that of the hydroxyaluminoxane. Olefin polymerization processes and catalysts formed from these novel compositions of matter also are disclosed.Type: GrantFiled: June 11, 2002Date of Patent: May 13, 2003Assignee: Albemarle CorporationInventors: Feng-Jung Wu, Larry S. Simeral
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Patent number: 6555494Abstract: Novel, highly effective catalyst compositions are described in which a low cost co-catalyst can be employed at very low aluminum loadings. Such compounds are composed of a cation derived from d-block or f-block metal compound, such as a metallocene, by loss of a leaving group, and an aluminoxate anion derived by transfer of a proton from a stable or metastable hydroxyaluminoxane to such leaving group. These catalyst compositions have extremely high catalytic activity and typically have high solubility in paraffinic solvents. Moreover they yield reduced levels of ash and result in improved clarity in polymers formed from such catalysts. Surprisingly, when isolated and stored, and optionally purified, under anhydrous inert conditions and surroundings, the catalyst compounds are more stable than if kept in solution. Thus these catalyst compounds can be stored, shipped, and used under inert anhydrous conditions as preformed catalysts thus simplifying the polymerization operations.Type: GrantFiled: September 5, 2001Date of Patent: April 29, 2003Assignee: Albemarle CorporationInventors: Feng-Jung Wu, Jamie R. Strickler
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Patent number: 6492292Abstract: Gelatinous compositions of matter which are useful as polymerization catalyst components and are highly stable in terms of OH-decay rate, as well as similarly stable solid compositions of matter formed from such gelatinous compositions, are described. The gelatinous and solid compositions are formed from hydroxyaluminoxane. Also disclosed is a process comprising converting a hydroxyaluminoxane into a gelatinous composition of matter, whereby the rate of OH-decay for the composition is reduced as compared to that of the hydroxyaluminoxane. Olefin polymerization processes and catalysts formed from these novel compositions of matter also are disclosed.Type: GrantFiled: September 5, 2001Date of Patent: December 10, 2002Assignee: Albemarle CorporationInventors: Feng-Jung Wu, Larry S. Simeral
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Patent number: 6462212Abstract: Novel, highly effective catalyst compositions are described in which a low cost co-catalyst can be employed at very low aluminum loadings. Such compounds are composed of a cation derived from d-block or f-block metal compound, such as a metallocene, by loss of a leaving group, and an aluminoxate anion derived by transfer of a proton from a stable or metastable hydroxyaluminoxane to such leaving group. These catalyst compositions have extremely high catalytic activity and typically have high solubility in paraffinic solvents. Moreover they yield reduced levels of ash and result in improved clarity in polymers formed from such catalysts. Surprisingly, when isolated and stored, and optionally purified, under anhydrous inert conditions and surroundings, the catalyst compounds are more stable than if kept in solution. Thus these catalyst compounds can be stored, shipped, and used under inert anhydrous conditions as preformed catalysts thus simplifying the polymerization operations.Type: GrantFiled: September 5, 2000Date of Patent: October 8, 2002Assignee: Albemarle CorporationInventor: Feng-Jung Wu
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Publication number: 20020132945Abstract: Surprisingly stable olefin polymerization co-catalysts formed from hydroxyaluminoxanes are revealed. In one embodiment of the invention, a solid composition of matter is formed from a hydroxyaluminoxane and a treating agent, whereby the rate of OH-decay for the solid composition is reduced as compared to that of the hydroxyaluminoxane. Processes for converting a hydroxyaluminoxane into a such a solid composition of matter, supported catalysts formed from such solid compositions of matter, as well as methods of their use, are described.Type: ApplicationFiled: September 5, 2001Publication date: September 19, 2002Inventors: Feng-Jung Wu, Christopher G. Bauch, Larry S. Simeral, Jamie R. Strickler
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Publication number: 20020086957Abstract: Novel, highly effective catalyst compositions are described in which a low cost co-catalyst can be employed at very low aluminum loadings. Such compounds are composed of a cation derived from d-block or f-block metal compound, such as a metallocene, by loss of a leaving group, and an aluminoxate anion derived by transfer of a proton from a stable or metastable hydroxyaluminoxane to such leaving group. These catalyst compositions have extremely high catalytic activity and typically have high solubility in paraffinic solvents. Moreover they yield reduced levels of ash and result in improved clarity in polymers formed from such catalysts. Surprisingly, when isolated and stored, and optionally purified, under anhydrous inert conditions and surroundings, the catalyst compounds are more stable than if kept in solution. Thus these catalyst compounds can be stored, shipped, and used under inert anhydrous conditions as preformed catalysts thus simplifying the polymerization operations.Type: ApplicationFiled: September 5, 2001Publication date: July 4, 2002Inventors: Feng-Jung Wu, Jamie R. Strickler
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Publication number: 20020072578Abstract: Gelatinous compositions of matter which are useful as polymerization catalyst components and are highly stable in terms of OH-decay rate, as well as similarly stable solid compositions of matter formed from such gelatinous compositions, are described. The gelatinous and solid compositions are formed from hydroxyaluminoxane. Also disclosed is a process comprising converting a hydroxyaluminoxane into a gelatinous composition of matter, whereby the rate of OH-decay for the composition is reduced as compared to that of the hydroxyaluminoxane. Olefin polymerization processes and catalysts formed from these novel compositions of matter also are disclosed.Type: ApplicationFiled: September 5, 2001Publication date: June 13, 2002Inventors: Feng-Jung Wu, Larry S. Simeral
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Patent number: 6160145Abstract: Novel, highly effective catalyst compositions are described in which a low cost co-catalyst can be employed at very low aluminum loadings. Such compounds are composed of a cation derived from d-block or f-block metal compound, such as a metallocene, by loss of a leaving group, and an aluminoxate anion derived by transfer of a proton from a stable or metastable hydroxyaluminoxane to such leaving group. These catalyst compositions have extememly high catalytic activity and typically have high solubility in paraffinic solvents. Moreover they yield reduced levels of ash and result in improved clarity in polymers formed from such catalysts.Type: GrantFiled: October 23, 1998Date of Patent: December 12, 2000Assignee: Albemarle CorporationInventors: Feng-Jung Wu, Jamie R. Strickler
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Patent number: 5968866Abstract: Ethylene is trimerized to form 1-hexene by using a catalyst comprising an aluminoxane and polydentate phosphine, arsine, and/or stibine coordination complex of a chromium salt. Catalysts, complexes, and ligands enabling production of 1-hexene in extremely high yields and purity are also described.Type: GrantFiled: May 1, 1998Date of Patent: October 19, 1999Assignee: BP Amoco CorporationInventor: Feng-Jung Wu
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Patent number: 5811618Abstract: Ethylene is trimerized to form 1-hexene by using a catalyst comprising an aluminoxane and polydentate phosphine, arsine, and/or stibine coordination complex of a chromium salt. Catalysts, complexes, and ligands enabling production of 1-hexene in extremely high yields and purity are also described.Type: GrantFiled: August 25, 1995Date of Patent: September 22, 1998Assignee: Amoco CorporationInventor: Feng-Jung Wu
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Patent number: 5744677Abstract: Alpha-olefins enriched in 1-hexene are prepared by oligomerizing ethylene in the presence of a catalyst comprising (a) a chromium complex containing a coordinating polydentate ligand and, (b) an aluminoxane, in an organic solvent.Type: GrantFiled: July 14, 1992Date of Patent: April 28, 1998Assignee: Amoco CorporationInventor: Feng-Jung Wu
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Patent number: 5550305Abstract: Ethylene is trimerized to form 1-hexene by using a catalyst comprising an aluminoxane and polydentate phosphine, arsine, and/or stibine coordination complex of a chromium salt.Type: GrantFiled: April 14, 1994Date of Patent: August 27, 1996Assignee: Amoco CorporationInventor: Feng-Jung Wu
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Patent number: 5087788Abstract: A process for dimerizing an alpha-olefin of the general formula RCH.dbd.CH.sub.2, where R is alkyl, cycloalkyl, or cycloalkenyl with a carbon number ranging from 1 to about 30, to a vinylidene olefin comprises contacting said alpha-olefin at temperatures between about -60.degree. C. to and 280.degree. C. with a catalyst comprising (a) a metallocene having the general formula (cyclopentadienyl).sub.n MY.sub.4-n wherein n=2 or 3, M is titanium, zirconium or hafnium and each Y is individually selected from hydrogen, C.sub.1 -C.sub.5 alkyl, C.sub.6 -C.sub.20 aryl, C.sub.2 -C.sub.20 alkoxy, C.sub.2 -C.sub.20 ester, and halogen, (b) an alkylaluminoxane other than methyl-aluminoxane, and (c) trimethyl aluminum.Type: GrantFiled: March 4, 1991Date of Patent: February 11, 1992Assignee: Ethyl CorporationInventor: Feng-Jung Wu
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Patent number: 4946975Abstract: Cyclopentadienyl manganese tricarbonyl compounds are made by reacting a mixture of 0.25-0.55 moles of manganese acetate and 0.45-0.55 moles of a bis-cyclopentadienyl manganese compound with about 0.5-2.1 moles of an alkyl aluminum compound (e.g. triethyl aluminum) in the presence of about 0.75-1.25 moles of an ether per mole of said alkyl aluminum compound and reacting the mixture with carbon monoxide at about 65.degree.-175.degree. C. and 300-1500 psig.Type: GrantFiled: January 12, 1990Date of Patent: August 7, 1990Assignee: Ethyl CorporationInventors: Feng-Jung Wu, Bruce C. Berris, Donald R. Bell