Patents by Inventor James A. Maddox
James A. Maddox 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: 7365139Abstract: A complex of transition metal Ti, Fe, Co, Ni, Cr, Mn, Ta, Rh, Y, Sc, Ru, Pd, Zr, Hf, V or Nb and a mono-, bi-, tri-, or tetra-dentate ligand, wherein at least one of the donor atoms of the ligand is a nitrogen atom N with a 5-membered heterocyclic substituent joined to the N by a carbon atom. The complex is preferably Formula (I) wherein R5—N-G-X1 is a bi-, tri, or tetra-dentate ligand, N is joined to G by an imine linkage; G is a bridging group which can contain a third or fourth donor atom; X1 is —O or —S if the X1-M bond is covalent, or if the X1-M bond is dative X1 is ?S, —PR7R8, —PR8R9, ?NR7, ?NR8, —NR7R8 or —NR8R9; R5 and R7 are 5-membered heterocyclic substituents joined to the nitrogen (or phosphorus) atoms via a carbon atom: R8 and R9 are hydrocarbyl or heterohydrocarbyl, substituted hydrocarbyl or aryl substituent; X represents an atom or group covalently or ionically bonded to the transition metal M: L is a group datively bound to M, and n is from 0 to 5; q is 1 or 2.Type: GrantFiled: December 5, 2006Date of Patent: April 29, 2008Assignee: BP Chemicals LimitedInventors: Simon Michael Green, Peter James Maddox
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Patent number: 7345129Abstract: A catalyst for the polymerisation of 1-olefins is disclosed, which comprises (1) a compound of Formula B wherein M is Fe[II], Fe[III], Co[I], Co[II], Co[III], Mn[I], Mn[II], Mn[III], Mn[IV], Ru[II], Ru[III] or Ru[IV]; X represents an atom or group covalently or ionically bonded to the transition metal M; T is the oxidation state of the transition metal M and b is the valency of the atom or group X; R1, R2, R3, R4, R5, R6 and R7 are independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl; and when any two or more of R1-R7 are hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl, said two or more can be linked to form one or more cyclic substituents; and (2) a further catalyst. Copolymers made using the catalyst having specific physical properties are also disclosed.Type: GrantFiled: November 20, 2006Date of Patent: March 18, 2008Assignee: Ineos Europe LimitedInventors: Brian Stephen Kimberley, Peter James Maddox, Stephen Roy Partington
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Patent number: 7163990Abstract: A complex of transition metal Ti, Fe, Co, Ni, Cr, Mn, Ta, Rh, Y, Sc, Ru, Pd, Zr, Hf, V or Nb and a mono-, bi-, tri-, or tetra-dentate ligand, wherein at least one of the donor atoms of the ligand is a nitrogen atom N with a 5-membered heterocyclic substituent joined to the N by a carbon atom. The complex is preferably formula (I) wherein R5—N-G-X1 is a bi-, tri, or tetra-dentate ligand, N is joined to G by an imine linkage; G is a bridging group which can contain a third or fourth donor atom; X1 is —O or —S if the X1-M bond is covalent, or if the X1-M bond is dative X1 is ?S, —PR7R8, —PR8R9, ?NR7, ?NR8, —NR7R8 or —NR8R9; R5 and R7 are 5-membered heterocyclic substituents joined to the nitrogen (or phosphorus) atoms via a carbon atom: R8 and R9 are hydrocarbyl or heterohydrocarbyl, substituted hydrocarbyl or aryl substituent; X represents an atom or group covalently or ionically bonded to the transition metal M; L is a group datively bound to M, and n is from 0 to 5; q is 1 or 2.Type: GrantFiled: May 14, 2002Date of Patent: January 16, 2007Assignee: BP Chemicals LimitedInventors: Simon Michael Green, Peter James Maddox
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Patent number: 7148304Abstract: A catalyst for the polymerization of 1-olefins is disclosed, which comprises (1) a compound of Formula B wherein M is Fe[II], Fe[III], Co[I], Co[II], Co[III], Mn[I], Mn[II], Mn[III], Mn[IV], Ru[II], Ru[III] or Ru[IV]; X represents an atom or group covalently or ionically bonded to the transition metal M; T is the oxidation state of the transition metal M and b is the valency of the atom or group X; R1, R2, R3, R4, R5, R6 and R7 are independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl; and when any two or more of R1–R7 are hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl, said two or more can be linked to form one or more cyclic substituents; and (2) a further catalyst.Type: GrantFiled: September 23, 2003Date of Patent: December 12, 2006Assignee: BP Chemicals LimitedInventors: Brian Stephen Kimberley, Peter James Maddox, Stephen Roy Partington
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Patent number: 6828398Abstract: A complex suitable for use as a catalyst in the polymerisation of olefins is disclosed, having the Formula (I) wherein M is a transition metal; X represents an atom or group covalently or ionically bonded to M; T is the oxidation state of M; b is the valency of the atom or group X; A1 to A3 are each independently N or P or CR, with the proviso that at least one but no more than two of them are independently CR; Y1 and Y2 are each independently CR′ or PR′R″; Z is oxygen or NR5, R5 and R7 and each R, each R′ and each R″ are independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl, substituted heterohydrocarbyl or SiR303 where each R30 is independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl; but excluding those complexes having the formulae (1) and (2) where in both cases R4 and R6 are Me, R5 and R7 are 2, 4, 6-trimethylphenyl, M is Fe, T is II, X is Cl aType: GrantFiled: November 15, 2002Date of Patent: December 7, 2004Assignee: BP Chemicals LimitedInventors: Vernon Charles Gibson, Olivier Hoarau, Brian Stephen Kimberley, Peter James Maddox
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Publication number: 20040147389Abstract: A complex of transition metal Ti, Fe, Co, Ni, Cr, Mn, Ta, Rh, Y, Sc, Ru, Pd, Zr, Hf, V or Nb and a mono-, bi-, tri-, or tetra-dentate ligand, wherein at least one of the donor atoms of the ligand is a nitrogen atom N with a 5-membered heterocyclic substituent joined to the N by a carbon atom. The complex is preferably formula (I) wherein R5—N-G-X1 is a bi-, tri.Type: ApplicationFiled: November 14, 2003Publication date: July 29, 2004Inventors: Simon Michael Green, Peter James Maddox
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Publication number: 20040077489Abstract: A catalyst for the polymerisation of 1-olefins is disclosed, which comprises (1) a compound of Formula B wherein M is Fe[II], Fe[III], Co[I], Co[II], Co[III], Mn[I], Mn[II], Mn[III], Mn[IV], Ru[II], Ru[III] or Ru[IV]; X represents an atom or group covalently or ionically bonded to the transition metal M; T is the oxidation state of the transition metal M and b is the valency of the atom or group X; R1, R2, R3, R4, R5, R6 and R7 are independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl; and when any two or more of R1-R7 are hydrocarbyl, substituted hydrocarbyl, htctrohydrocarbyl or substituted heterohydrocarbyl, said two or more can be linked to form one or more cyclic substituents; and (2) a further catalyst. Copolymers made using the catalyst having specific physical properties are also disclosed.Type: ApplicationFiled: September 23, 2003Publication date: April 22, 2004Applicant: BP Chemicals LimitedInventors: Brian Stephen Kimberley, Peter James Maddox, Stephen Roy Partington
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Patent number: 6657026Abstract: A catalyst for the polymerization of 1-olefins which includes (1) a compound of Formula B wherein M is Fe[II], Fe[III], Co[I], Co[II], Co[III], Man[I], Man[II], Mn[III], Mn[IV], Ru[II], Ru[III] or Ru[IV]; X represents an atom or group covalently or ionically bonded to the transition metal M; T is the oxidation state of the transition metal M and b is the valency of the atom or group X; R1, R2, R3, R4, R5, R6 and R7 are independently selected form hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl; and when any two ore more of R1-R7 are hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl or substituted heterohydrocarbyl, said two or more can be linked to form one or more cyclic substituents; and (2) a further catalyst.Type: GrantFiled: September 11, 2000Date of Patent: December 2, 2003Assignee: BP Chemicals LimitedInventors: Brian Stephen Kimberley, Peter James Maddox, Stephen Roy Partington
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Publication number: 20030100689Abstract: A complex suitable for use as a catalyst in the polymerisation of olefins is disclosed, having the Formula (I) wherein M is a transition metal; X represents an atom or group covalently or ionically bonded to M; T is the oxidation state of M; b is the valency of the atom or group X; A1 to A3 are each independently N or P or CR, with the proviso that at least one but no more than two of them are independently CR; Y1 and Y2 are each independently CR′ or PR′R″; Z is oxygen or NR5, R5 and R7 and each R, each R′ and each R″ are independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl, substituted heterohydrocarbyl or SiR303 where each R30 is independently selected from hydrogen, halogen, hydrocarbyl, substituted hydrocarbyl, heterohydrocarbyl and substituted heterohydrocarbyl; but excluding those complexes having the formulae (1) and (2) where in both cases R4 and R6 are Me, R5 and R7 are 2, 4, 6-trimethylphenyl, M is Fe, T is II, X is Cl aType: ApplicationFiled: November 15, 2002Publication date: May 29, 2003Inventors: Vernon Charles Gibson, Olivier Hoarau, Brian Stephen Kimberley, Peter James Maddox
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Patent number: 6465386Abstract: A polymerization catalyst comprising (1) a catalyst having a compound of the Formula (I): (2) a further catalyst for the polymerization of 1-olefins which is different from catalyst (1).Type: GrantFiled: October 18, 2000Date of Patent: October 15, 2002Assignee: BP Chemicals LimitedInventors: Peter James Maddox, Stephen Roy Partington
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Patent number: 6461994Abstract: The present invention relates to transition metal complex compounds, to polymerization catalysts based thereon and to their use in the polymerization and copolymerization of olefins.Type: GrantFiled: October 30, 2000Date of Patent: October 8, 2002Assignee: BP Chemicals LimitedInventors: Vernon Charles Gibson, Brian Stephen Kimberley, Peter James Maddox, Sergio Mastroianni
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Patent number: 6437060Abstract: A process for the polymerisation of olefins in the gas phase is carried out in the presence of a supported transition metal catalyst. The process involves a prepolymerisation step which may be performed in-situ and in particular the prepolymer may be prepared in the dry phase. The catalyst may for example comprise a constrained geometry transition metal complex supported on silica and used in the presence of an activator. The prepolymerisation step enables the activity of the catalyst to be improved.Type: GrantFiled: December 23, 1999Date of Patent: August 20, 2002Assignee: BP Chemicals LimitedInventors: Peter James Maddox, Peter Sefton Williams
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Patent number: 6437062Abstract: A process for the polymerization of olefins in a gas phase reactor operating in a non-condensed mode, in which the process is carried out in the presence of a catalyst system containing (a) a metallocene supported on a solid support and (b) an activator, and adding a lower alkane to the gas phase reactor.Type: GrantFiled: July 9, 1999Date of Patent: August 20, 2002Assignee: BP Chemicals LimitedInventors: Peter James Maddox, Peter Sefton Williams
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Patent number: 6410659Abstract: A process for preparing bimodal molecular weight distribution copolymers of ethylene with alpha-olefins having 3 to 20 carbon atoms, said copolymers having: (a) a comonomer distribution wherein the comonomer level at the mid-position of the low molecular weight component is <3 times the level at the mid-position of the high molecular weight component, and (b) a total average comonomer content in the range 0.5-20 short chain branches (SCB)/1000 C atoms characterised in that said process is carried out in the presence of a supported multisite catalyst. The multisite catalyst comprises a metallocene complex and a Ziegler catalyst. The metallocene complex for example is bis(pentamethylcyclopentadienyl) zirconium dichloride.Type: GrantFiled: July 31, 1997Date of Patent: June 25, 2002Assignee: BP Chemicals LimitedInventors: Peter James Maddox, John Paul McNally, David Pratt
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Patent number: 6300437Abstract: A process for preparing polyolefins having at least 0.01 long chain branches (LCB)/1000 carbon atoms along the polymer backbone as measured by flow activation and a molecular weight distribution greater than 2.5 comprises polymerization in the presence of a metallocene complex having the formula: wherein Cp1, Cp2 are independently a substituted or unsubstituted indenyl or hydrogenated indenyl group, Y is a univalent anionic ligand, M is zirconium, titanium or hafnium, and Z is a bridging group comprising an alkylene group having 1 to 20 carbon atoms or a dialkyl silyl- or germyl- group, or alkyl phophine or amine radical. Polyolefins prepared from such a process show specific flow activation energy/LCB relationships.Type: GrantFiled: July 31, 1997Date of Patent: October 9, 2001Assignee: BP Chemicals LimitedInventors: Philip Howard, Peter James Maddox, Stephen Roy Partington
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Patent number: 6258912Abstract: A process for preparing polyolefins having at least 0.01 long chain branches (LCB)/1000 carbon atoms along the polymer backbone as measured by flow activation and a molecular weight distribution greater than 2.5 comprises polymerization in the presence of a metallocene complex having the formula: wherein Cp1, Cp2 are independently a substituted or unsubstituted indenyl or hydrogenated indenyl group, Y is a univalent anionic ligand, M is zirconium, titanium or hafnium, and Z is a bridging group comprising an alkylene group having 1 to 20 carbon atoms or a dialkyl silyl- or germyl- group, or alkyl phophine or amine radical. Polyolefins prepared from such a process show specific flow activation energy/LCB relationships.Type: GrantFiled: July 15, 1999Date of Patent: July 10, 2001Assignee: BP Chemicals LimitedInventors: Philip Howard, Peter James Maddox, Stephen Roy Partington
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Patent number: 4059225Abstract: A label incorporating a plurality of concentric rings having two different light reflective characteristics provides a binary coded label on which any desired information can be displayed, and which may be secured to various objects. By passing the label in any orientation over a label scanning assembly which provides a scanning light beam, the label code signal is read and transmitted to a label information assembly which converts the label signal to digital signals, determines when the entire label signal has been read, and transmits the complete label information to data storage.Type: GrantFiled: August 27, 1971Date of Patent: November 22, 1977Inventor: James A. Maddox
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Patent number: 3971917Abstract: A label incorporating a plurality of concentric rings having two different light reflective characteristics provides a binary coded label on which any desired information can be displayed, and which may be secured to various objects. By passing the label in any orientation over a label scanning assembly which provides a scanning light beam, the label code signal is read and transmitted to a label information assembly which converts the label signal to digital signals, determines when the entire label signal has been read, and transmits the complete label information to data storage.Type: GrantFiled: August 1, 1974Date of Patent: July 27, 1976Inventors: James A. Maddox, Jeffery R. Maddox