Patents by Inventor Steven P. Rucker

Steven P. Rucker 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).

  • Patent number: 7807769
    Abstract: This invention relates to an isotactic propylene homopolymer having: more than 15 and less than 100 regio defects (sum of 2,1-erythro and 2,1-threo insertions and 3,1-isomerizations) per 10,000 propylene units; an Mw of 35000 g/mol or more; a peak melting temperature of greater than 149° C.; an mmmm pentad fraction of 0.85 or more; a heat of fusion of 80 J/g or more; and a peak melting temperature minus peak crystallization temperature (Tmp?Tcp) of less than or equal to (0.907 times Tmp) minus 99.64 (Tmp?Tcp<(0.907×Tmp)?99.64), as measured in ° C. on the homopolymer having 0 wt % nucleating agent.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: October 5, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Aspy K. Mehta, Manika Varma-Nair, Gabor Kiss, Patrick Brant, Robert P. Reynolds, John W. Chu, Steven P. Rucker, Peijun Jiang
  • Publication number: 20100113718
    Abstract: This invention relates to processes for producing an isotactic propylene homopolymer having more than 15 and less than 100 regio defects (sum of 2,1-erythro and 2,1-threo insertions and 3,1-isomerizations) per 10,000 propylene units; a weight-averaged molecular weight of 35000 g/mol or more; a peak melting temperature of greater than 149° C.; an mmmm pentad fraction of 0.85 or more; a heat of fusion of 80 J/g or more; and a peak melting temperature minus peak crystallization temperature (Tmp?Tcp) of less than or equal to (0.907 times Tmp) minus 99.64 (Tmp?Tcp<(0.907×Tmp)?99.64), as measured in ° C. on the homopolymer having 0 wt % nucleating agent.
    Type: Application
    Filed: November 4, 2008
    Publication date: May 6, 2010
    Inventors: Aspy K. Mehta, Manika Varma-Nair, Gabor Kiss, Robert P. Reynolds, John W. Chu, Steven P. Rucker
  • Patent number: 7592411
    Abstract: A liquid polymer suitable for use as a lubricant base oil is produced by polymerizing ethylene and at least one alpha-olefin using a metallocene catalyst to provide a polymer which is then isomerized and hydrogenated to produce the liquid polymer.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: September 22, 2009
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Margaret M. Wu, Steven P. Rucker, Richard T. Spissell, Steven E. Donnachie
  • Publication number: 20090221460
    Abstract: The present invention is directed to green lubricant compositions comprising a base oil and an effective amount of premixed additives that improve wear protection and reduce phosphorus emissions.
    Type: Application
    Filed: February 6, 2009
    Publication date: September 3, 2009
    Inventors: Jacob J. Habeeb, Douglas E. Deckman, Brandon T. Weldon, Steven P. Rucker, Michael E. Landis
  • Publication number: 20090163643
    Abstract: Isotactic polypropylene ethylene-propylene copolymer blends and in-line processes for producing them. The blend of polypropylene and ethylene-propylene copolymer may have between 1 and 50 wt % of isotactic polypropylene with a melt flow rate of between 0.5 and 20,000 g/10 min and a melting peak temperature of 145° C. or higher, and wherein the difference between the DSC peak melting and the peak crystallization temperatures is less than or equal to 0.5333 times the melting peak temperature minus 41.333° C., and between 50 and 99 wt % of ethylene-propylene copolymer including between 10 wt % and 20 wt % randomly distributed ethylene with a melt flow rate of between 0.5 and 20,000 g/10 min, wherein the copolymer is polymerized by a bulk homogeneous polymerization process, and wherein the total regio defects in the continuous propylene segments of the copolymer is between 40 and 150% greater than a copolymer of equivalent melt flow rate and wt % ethylene polymerized by a solution polymerization process.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 25, 2009
    Inventors: Gabor Kiss, Patrick Brant, Robert Partick Reynolds, JR., Aspy K. Mehta, Manika Varma-Nair, John W. Chu, Steven P. Rucker
  • Publication number: 20090163678
    Abstract: Provided are bulk homogeneous polymerization processes for producing ethylene propylene random copolymers. The process includes contacting in a reactor or in a series of reactors propylene monomer, ethylene comonomer with one or more catalyst systems and optional solvent (present at less than 40 wt %), wherein the reactor train is at a temperature of between 65° C. and 180° C.
    Type: Application
    Filed: November 14, 2008
    Publication date: June 25, 2009
    Inventors: Gabor Kiss, Robert Patrick Reynolds, JR., John W. Chu, Steven P. Rucker, James Richardson Lattner
  • Publication number: 20090005279
    Abstract: This invention relates to a polyalpha-olefin (and hydrogenated analogs thereof) comprising more than 50 mole % of one or more C5 to C24 alpha-olefin monomers where the polyalpha-olefin has: a) 40 mole % or more of mm triads, b) a Bromine number of Y or greater, where Y is equal to 89.92*(V)?°5863, where V is the Kinematic Viscosity of the polyalpha-olefin measured at 100° C. in cSt, and c) 1,2 disubstituted olefins present at 7 mole % or more, preferably having Z mole % or more of units represented by the formula: where j, k and m are each, independently, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22, n is an integer from 1 to 350, and where Z=8.420*Log(V)?4.048, where V is the kinematic viscosity of the polyalpha-olefin measured at 1000 C in cSt This invention also relates to process to produce such polyalpha-olefins.
    Type: Application
    Filed: June 2, 2006
    Publication date: January 1, 2009
    Inventors: Margaret May-Som Wu, Lisa Saunders Baugh, Jo Ann Canich, Chia Shian Chee, Mark Paul Hagemeister, Andrew Jackson, Peijun Jiang, Gordon H. Lee, Frederick Yip-Kwai Lo, Steven P. Rucker, Shakeel Tirmizi, John F. Walzer, JR., Norman Yang
  • Publication number: 20080306215
    Abstract: A process is described for functionalizing a copolymer comprising units derived from at least one ?-olefin and units derived from at least one diene, which copolymer contains at least one double bond. The process comprises reacting the copolymer with at least one functionalizing agent to introduce polar pendant oxygen-containing functional groups onto the copolymer.
    Type: Application
    Filed: June 6, 2007
    Publication date: December 11, 2008
    Inventors: Abhimanyu Onkar Patil, Stephen Zushma, Steven P. Rucker, Christian Peter Mehnert, Raymond A. Cook, Lisa Saunders Baugh, Enock Berluche
  • Publication number: 20080214767
    Abstract: This invention relates to an isotactic propylene homopolymer having: more than 15 and less than 100 regio defects (sum of 2,1-erythro and 2,1-threo insertions and 3,1-isomerizations) per 10,000 propylene units; an Mw of 35000 g/mol or more; a peak melting temperature of greater than 149° C.; an mmmm pentad fraction of 0.85 or more; a heat of fusion of 80 J/g or more; and a peak melting temperature minus peak crystallization temperature (Tmp?Tcp) of less than or equal to (0.907 times Tmp) minus 99.64 (Tmp?Tcp<(0.907×Tmp)?99.64), as measured in ° C. on the homopolymer having 0 wt % nucleating agent.
    Type: Application
    Filed: December 20, 2007
    Publication date: September 4, 2008
    Inventors: Aspy K. Mehta, Manika Varma-Nair, Gabor Kiss, Patrick Brant, Robert P. Reynolds, John W. Chu, Steven P. Rucker, Peijun Jiang
  • Publication number: 20080177121
    Abstract: This invention relates to processes to produce liquid poly-alpha-olefins (PAOs) having a kinematic viscosity at 100° C. of more than 20 cSt in the presence of a metallocene catalyst with a non-coordinating anion activator and hydrogen.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 24, 2008
    Inventors: Margaret May-Som Wu, Cataline L. Coker, John F. Walzer, Peijun Jiang, Steven P. Rucker
  • Patent number: 7022784
    Abstract: A liquid polymer suitable for use as a lubricant base oil is produced by polymerizing ethylene and at least one alpha-olefin using a metallocene catalyst to provide a polymer which is then isomerized and hydrogenated to produce the liquid polymer.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: April 4, 2006
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Margaret May-Som Wu, Steven P. Rucker, Richard T. Spissell, Steven Edward Donnachie
  • Patent number: 6881806
    Abstract: The invention is related to a geminally disubstituted olefin-carbon monoxide-ethylene polymer. The invention is also related to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed and an ethylene feed under free radical polymerization conditions. The invention is further related to a geminally disubstituted olefin-carbon monoxide-ethylene-X polymer, where monomer X is a free radical polymerizable monomer. The invention is also directed to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene-X polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed, an ethylene feed and a feed containing monomer X under free radical polymerization conditions. The polymers of the invention are useful as polyvinyl chloride plasticizers.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: April 19, 2005
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Abhimanyu O. Patil, Nicholas V. Smith, Jose G. Santiesteban, Allen D. Godwin, Steven P. Rucker, Stephen Zushma
  • Patent number: 6864319
    Abstract: The invention is related to a geminally disubstituted olefin-carbon monoxide-ethylene polymer. The invention is also related to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed and an ethylene feed under free radical polymerization conditions. The invention is further related to a geminally disubstituted olefin-carbon monoxide-ethylene-X polymer, where monomer X is a free radical polymerizable monomer. The invention is also directed to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene-X polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed, an ethylene feed and a feed containing monomer X under free radical polymerization conditions. The polymers of the invention are useful as polyvinyl chloride plasticizers.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: March 8, 2005
    Inventors: Abhimanyu O. Patil, Nicholas V. Smith, Jose G. Santiesteban, Allen D. Godwin, Steven P. Rucker, Stephen Zushma
  • Publication number: 20040167306
    Abstract: The invention is related to a geminally disubstituted olefin-carbon monoxide-ethylene polymer. The invention is also related to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed and an ethylene feed under free radical polymerization conditions. The invention is further related to a geminally disubstituted olefin-carbon monoxide-ethylene-X polymer, where monomer X is a free radical polymerizable monomer. The invention is also directed to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene-X polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed, an ethylene feed and a feed containing monomer X under free radical polymerization conditions. The polymers of the invention are useful as polyvinyl chloride plasticizers.
    Type: Application
    Filed: February 27, 2004
    Publication date: August 26, 2004
    Inventors: Abhimanyu O. Patil, Nicholas V. Smith, Jose G. Santiesteban, Allen D. Godwin, Steven P. Rucker, Stephen Zushma
  • Publication number: 20040167307
    Abstract: The invention is related to a geminally disubstituted olefin-carbon monoxide-ethylene polymer. The invention is also related to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed and an ethylene feed under free radical polymerization conditions. The invention is further related to a geminally disubstituted olefin-carbon monoxide-ethylene-X polymer, where monomer X is a free radical polymerizable monomer. The invention is also directed to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene-X polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed, an ethylene feed and a feed containing monomer X under free radical polymerization conditions. The polymers of the invention are useful as polyvinyl chloride plasticizers.
    Type: Application
    Filed: February 27, 2004
    Publication date: August 26, 2004
    Inventors: Abhimanyu O. Patil, Nicholas V. Smith, Jose G. Santiesteban, Allen D. Godwin, Steven P. Rucker, Stephen Zushma
  • Patent number: 6777514
    Abstract: The invention is related to a geminally disubstituted olefin-carbon monoxide-ethylene polymer. The invention is also related to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed and an ethylene feed under free radical polymerization conditions. The invention is further related to a geminally disubstituted olefin-carbon monoxide-ethylene-X polymer, where monomer X is a free radical polymerizable monomer. The invention is also directed to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene-X polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed, an ethylene feed and a feed containing monomer X under free radical polymerization conditions. The polymers of the invention are useful as polyvinyl chloride plasticizers.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: August 17, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Abhimanyu O. Patil, Nicholas V. Smith, Jose G. Santiesteban, Allen D. Godwin, Steven P. Rucker, Stephen Zushma
  • Publication number: 20040082728
    Abstract: A liquid polymer suitable for use as a lubricant base oil is produced by polymerizing ethylene and at least one alpha-olefin using a metallocene catalyst to provide a polymer which is then isomerized and hydrogenated to produce the liquid polymer.
    Type: Application
    Filed: September 16, 2003
    Publication date: April 29, 2004
    Inventors: Margaret May-Som Wu, Steven P. Rucker, Richard T. Spissell, Steven Edward Donnachie
  • Publication number: 20040044159
    Abstract: The invention is related to a geminally disubstituted olefin-carbon monoxide-ethylene polymer. The invention is also related to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed and an ethylene feed under free radical polymerization conditions. The invention is further related to a geminally disubstituted olefin-carbon monoxide-ethylene-X polymer, where monomer X is a free radical polymerizable monomer. The invention is also directed to a method for preparing geminally disubstituted olefin-carbon monoxide-ethylene-X polymers by reacting a geminally disubstituted olefin feed, a carbon monoxide feed, an ethylene feed and a feed containing monomer X under free radical polymerization conditions. The polymers of the invention are useful as polyvinyl chloride plasticizers.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 4, 2004
    Inventors: Abhimanyu O. Patil, Nicholas V. Smith, Jose G. Santiesteban, Allen D. Godwin, Steven P. Rucker, Stephen Zushma