Patents by Inventor Shahid Murtuza
Shahid Murtuza 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: 8937141Abstract: The present invention provides curable compositions comprising non-Sn organo-metal catalysts that accelerate the condensation curing of moisture curable silicones/non-silicones. In particular, the present invention provides Mn(III) complexes that are particularly suitable as replacements for organotin for sealant and RTV formulations. The Mn(III) complexes are comparable or superior to organotin such as DBTDL, superior to Mn(II) compounds, and exhibit certain behavior in the presence of components that allow for tuning or adjusting the cure characteristics of the present compositions and provide good adhesion and storage stability.Type: GrantFiled: September 8, 2011Date of Patent: January 20, 2015Assignee: Momentive Performance Materials Inc.Inventors: Sumi, Edward J. Nesakumar, Anantharaman Dhanabalan, Shahid Murtuza, Shayne J. Landon
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Patent number: 8192649Abstract: A method of preparing a capped poly(arylene ether) resin includes reacting a capping agent with a blend of two or more poly(arylene ether) resins having different intrinsic viscosities. Cured compositions prepared from these capped poly(arylene ether) resins exhibit improved balances of stiffness, toughness, and dielectric properties compared to compositions with two or more separately capped and isolated poly(arylene ether) resins.Type: GrantFiled: April 20, 2007Date of Patent: June 5, 2012Assignee: Sabic Innovative Plastics IP B.V.Inventors: Gary William Yeager, Hua Guo, Zhiqing Lin, Shahid Murtuza
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Publication number: 20120065308Abstract: The present invention provides curable compositions comprising non-Sn organo-metal catalysts that accelerate the condensation curing of moisture curable silicones/non-silicones. In particular, the present invention provides Mn(III) complexes that are particularly suitable as replacements for organotin for sealant and RTV formulations. The Mn(III) complexes are comparable or superior to organotin such as DBTDL, superior to Mn(II) compounds, and exhibit certain behavior in the presence of components that allow for tuning or adjusting the cure characteristics of the present compositions and provide good adhesion and storage stability.Type: ApplicationFiled: September 8, 2011Publication date: March 15, 2012Inventors: Sumi, Edward J. Nesakumar, Anantharaman Dhanabalan, Shahid Murtuza, Shayne J. Landon
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Patent number: 7579495Abstract: Cyclic siloxanes that contain releasable active ingredients are described. The active ingredient can be an alcohol or enolizable carbonyl-containing compound such as a ketone, aldehyde, or ester. The product siloxanes are useful in a variety of personal and household care products where slow or controlled release of active ingredient is desired. A preferred embodiment utilizes substituents that when released as active ingredients are fragrant.Type: GrantFiled: December 19, 2003Date of Patent: August 25, 2009Assignee: Momentive Performance Materials Inc.Inventors: Robert J. Perry, Mark D. Leatherman, Shahid Murtuza
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Patent number: 7576170Abstract: Cyclic siloxanes that contain releasable active ingredients are described. The active ingredient can be an alcohol or enolizable carbonyl-containing compound such as a ketone, aldehyde, or ester. The product siloxanes are useful in a variety of personal and household care products where slow or controlled release of active ingredient is desired. A preferred embodiment utilizes substituents that when released as active ingredients are fragrant.Type: GrantFiled: December 19, 2003Date of Patent: August 18, 2009Assignee: Momentive Performance MaterialsInventors: Robert J. Perry, Mark D. Leatherman, Shahid Murtuza
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Publication number: 20080058490Abstract: A curable fluorosilicone composition comprising: a) an alkenyl fluorine-containing siloxane having the formula: MaDbD?cTdQe where M=R1R2R3SiO1/2; D=R4R5SiO2/2; D=R6R7SiO2/2; T=R8SiO3/2; and Q=SiO4/2 with with each R1, R2, R4, R5, R6 and R8 independently selected from the group of i) C1 to C10 monovalent hydrocarbon radicals and ii) monovalent fluorinated alkyl radicals having the formula (CH2)ZRf monovalent radicals where 2?z?10 and Rf is a terminal perfluorinated alkyl group of C1 to C8 and each R3 and R7 independently selected from the group of C2 to C40 monovalent alkenyl hydrocarbon radicals, the stoichiometric coefficients a and b are non-zero and positive while the stoichiometric coefficients c, d and e are zero or positive subject to the requirement that a+c is greater than or equal to 2; the substituents R1, R2, R4, R5, R6 and R8 are chosen such that at least 30 mole percent of the sum of the silicon atoms on the M, D, D?, and T groups contain a monovalent fluorinated alkyl radical; b) The hydrogeType: ApplicationFiled: August 31, 2006Publication date: March 6, 2008Applicant: General Electric CompanyInventors: Kim Chi Thi Le, Shahid Murtuza
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Publication number: 20070191577Abstract: A method of preparing a capped poly(arylene ether) resin includes reacting a capping agent with a blend of two or more poly(arylene ether) resins having different intrinsic viscosities. Cured compositions prepared from these capped poly(arylene ether) resins exhibit improved balances of stiffness, toughness, and dielectric properties compared to compositions with two or more separately capped and isolated poly(arylene ether) resins.Type: ApplicationFiled: April 20, 2007Publication date: August 16, 2007Inventors: Gary Yeager, Hua Guo, Zhiqing Lin, Shahid Murtuza
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Patent number: 7235192Abstract: A method of preparing a capped poly(arylene ether) resin includes reacting a capping agent with a blend of two or more poly(arylene ether) resins having different intrinsic viscosities. Cured compositions prepared from these capped poly(arylene ether) resins exhibit improved balances of stiffness, toughness, and dielectric properties compared to compositions with two or more separately capped and isolated poly(arylene ether) resins.Type: GrantFiled: July 1, 2003Date of Patent: June 26, 2007Assignee: General Electric CompanyInventors: Gary William Yeager, Hua Guo, Zhiqing Lin, Shahid Murtuza
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Publication number: 20060094809Abstract: The instant invention provides for an electrically and thermally conductive silicone adhesive composition comprising an alkenyl siloxane, a hydrido-siloxane, an electrically and thermally conductive filler, an optional thermally conductive filler, an adhesion promoter that does not deactivate the hydrosilylation catalyst, and a hydrosilylation catalyst and a hydrosilylation catalyst inhibitor.Type: ApplicationFiled: March 11, 2005Publication date: May 4, 2006Inventors: Davide Simone, Larry Lewis, Shahid Murtuza
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Publication number: 20050136022Abstract: Cyclic siloxanes that contain releasable active ingredients are described. The active ingredient can be an alcohol or enolizable carbonyl-containing compound such as a ketone, aldehyde, or ester. The product siloxanes are useful in a variety of personal and household care products where slow or controlled release of active ingredient is desired. A preferred embodiment utilizes substituents that when released as active ingredients are fragrant.Type: ApplicationFiled: December 19, 2003Publication date: June 23, 2005Inventors: Robert Perry, Mark Leatherman, Shahid Murtuza
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Publication number: 20050136021Abstract: Cyclic siloxanes that contain releasable active ingredients are described. The active ingredient can be an alcohol or enolizable carbonyl-containing compound such as a ketone, aldehyde, or ester. The product siloxanes are useful in a variety of personal and household care products where slow or controlled release of active ingredient is desired. A preferred embodiment utilizes substituents that when released as active ingredients are fragrant.Type: ApplicationFiled: December 19, 2003Publication date: June 23, 2005Inventors: Robert Perry, Mark Leatherman, Shahid Murtuza
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Publication number: 20040106750Abstract: A method of preparing a capped poly(arylene ether) resin includes reacting a capping agent with a blend of two or more poly(arylene ether) resins having different intrinsic viscosities. Cured compositions prepared from these capped poly(arylene ether) resins exhibit improved balances of stiffness, toughness, and dielectric properties compared to compositions with two or more separately capped and isolated poly(arylene ether) resins.Type: ApplicationFiled: July 1, 2003Publication date: June 3, 2004Applicant: GENERAL ELECTRIC COMPANYInventors: Gary William Yeager, Hua Guo, Zhiqing Lin, Shahid Murtuza
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Patent number: 6518384Abstract: Ethylene and/or propylene are polymerized to form highly branched, liquid polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which comprises (1) an alkyl aluminum component, (2) an aluminum or gallium trihalide component, and, optionally, (3) a Group 4 metallocene dihalide component.Type: GrantFiled: November 1, 2000Date of Patent: February 11, 2003Inventors: Ayusman Sen, Louis M. Wojcinski, II, Shahid Murtuza
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Patent number: 6344594Abstract: Ethylene is trimerized to form 1-hexene, at a selectivity of up to about 99 mole percent, by contacting ethylene, at an ethylene pressure of from about 200-1500 psig and at a reaction temperature of from about 0° C. to about 100° C., with a catalyst comprising a tantalum compound (e.g., TaCl5) and a alkylating component comprising a metal hydrocarbyl compound or a metal hydrocarbyl halide compound (e.g., Sn(CH3)4).Type: GrantFiled: April 14, 2000Date of Patent: February 5, 2002Assignee: The Penn State Research FoundationInventors: Ayusman Sen, Shahid Murtuza, Seth B. Harkins, Cecily Andes
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Patent number: 6303717Abstract: Oily hyperbranched polymers derived from ethylene, propylene, butene and/or a C5-C24 &agr;-olefin, and a method for their synthesis, are disclosed. The polymers have non-regular microstructures and are characterized by a ratio ()of methyl hydrogens centered around 0.85 ppm on the 1H-NMR spectra of the polymers relative to total aliphatic hydrogens of from about 0.40 to about 0.65 for polymers derived from ethylene or butene, and a ratio ()of from greater than 0.50 to about 0.65 for polymers derived from propylene. A method for grafting hyperbranched polymers derived from ethylene, propylene, butene and/or a C5-C24 &agr;-olefin onto aromatic rings in organic molecules and polymers, and the resulting grafted materials, are also disclosed. The hyperbranched polymers and grafted materials are useful, for example, as lubricants and lubricant additives.Type: GrantFiled: February 3, 1998Date of Patent: October 16, 2001Assignee: The Penn State Research Foundation University Park PAInventors: Ayusman Sen, Jang Sub Kim, James H. Pawlow, Shahid Murtuza, Smita Kacker, Louis M. Wojcinski, III
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Patent number: 6232257Abstract: Ethylene and/or propylene are polymerized to form highly branched, liquid polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which comprises (1) an alkyl aluminum component, (2) an aluminum or gallium trihalide component, and, optionally, (3) a Group 4 metallocene dihalide component.Type: GrantFiled: March 19, 1999Date of Patent: May 15, 2001Assignee: The Penn State-Research FoundationInventors: Ayusman Sen, Louis M. Wojcinski, II, Shahid Murtuza
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Patent number: 6150576Abstract: The novel synthetic polyethylene fluids of the present invention are characterized by high viscosity indices (about 94-151 VI), low pour points (about -60 to -10.degree. C.), and a kinematic viscosity of about 6 to 28 cSt KV at 100.degree. C. The product compositions comprise polymers having a molecular weight of from about 300 to 30,000 and a high branching index of 151 to 586 branches per 1000 CH.sub.2 groups, or BI=0.18-0.40, wherein the polymer is substantially free of methyl branches. Highly-branched polyethylene fluids that have less than 5 methyl branches per 1000 CH.sub.2 groups are prepared by polymerizing ethylene in the presence of a catalyst system consisting of [C] and [B], wherein [C] is a catalyst having the empirical formula MX.sub.4 and [B] is a co-catalyst having the empirical formula R.sub.n AlX.sub.3-n, where M is a Group IVB transition metal, X is a halogen anion, R is a C.sub.1 -C.sub.Type: GrantFiled: March 19, 1999Date of Patent: November 21, 2000Assignees: Mobil Oil Corporation, The Pennsylvania UniversityInventors: Zhaozhong Jiang, Gregory S. Long, Shahid Murtuza, Ayusman Sen, Suzanne E. Schramm, Jeffrey C. Trewella
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Patent number: 6063973Abstract: The novel synthetic polyethylene fluids of the present invention are characterized by high viscosity indices (about 94-151 VI), low pour points (about -60 to -10.degree. C.), and a kinematic viscosity of about 6 to 28 cSt KV at 100.degree. C. The product compositions comprise polymers having a molecular weight of from about 300 to about 30,000 and a branching index of 151 to 586 branches per 1000 CH.sub.2 groups, or BI=0.18-0.40. A process for preparing such novel synthetic polyethylene fluids comprises polymerizing ethylene in the presence of a catalyst system, said catalyst system comprising [A] and [B], wherein [A] is a catalyst having the formula MX.sub.5 and [B] is a co-catalyst having the formula R.sub.n AlX.sub.3-n where M is a Group VB, VIB, or VIII transition metal; X is a halogen anion; R is a C.sub.1 -C.sub.20 alkyl group; and n is 1-2.Type: GrantFiled: March 19, 1999Date of Patent: May 16, 2000Assignees: Mobil Oil Corporation, The Pennsylvania UniversityInventors: Ayusman Sen, Suzanne E. Schramm, Jeffrey C. Trewella, Zhaozhong Jiang, Gregory S. Long, Shahid Murtuza