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: 10421921
    Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: September 24, 2019
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Patent number: 9701595
    Abstract: This disclosure relates to a liquid syndiotactic polyalphaolefin, sPAO, comprising one or more C4 to C24 monomers, said sPAO having: a) an rr triad content of 5 to 50% as measured by 13C NMR; b) an mr triad content of 25 to 60% as measured by 13C NMR, where the mr to mm triad ratio is at least 1.0; c) a pour point of Z° C. or less, where Z=0.0648X?51.2, where X=kinematic viscosity at 100° C. as reported in centistokes (cSt); d) a kinematic viscosity at 100° C. of 100 cSt or more (alternatively 200 cSt or more); e) a ratio of mr triads to rr triad (as determined by 13C NMR) of less than 9; f) a ratio of vinylidene to 1,2-disubstituted olefins (as determined by 1H NMR) of less than 8; g) a viscosity index of 120 or more; and h) an Mn of 40,000 or less. This disclosure further relates to processes to make and use sPAOs, including those having any combination of characterics a) to h).
    Type: Grant
    Filed: January 2, 2013
    Date of Patent: July 11, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret M. Wu, Steven P. Rucker, Jo Ann M. Canich
  • Publication number: 20170137737
    Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Patent number: 9593288
    Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: March 14, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Publication number: 20150252279
    Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids
    Type: Application
    Filed: November 18, 2014
    Publication date: September 10, 2015
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Patent number: 8921291
    Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: December 30, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister
  • Publication number: 20140378720
    Abstract: A process to produce polyalpha-olefins includes contacting a feed stream of at least one alpha-olefin monomer having 4 to 25 carbon atoms with a metallocene catalyst compound and an activator, and optionally an alkyl-aluminum compound, under polymerizations conditions in a reactor. The alpha-olefin monomer is present at 10% volume or more in the reactor and the feed stream includes less than 600 ppm of heteroatom containing compounds. The process further includes obtaining a polyalpha-olefin with at least 50 mole % C5 to C24 alpha-olefin monomer and kinematic viscosity at 100° C. of 5000 cSt or less.
    Type: Application
    Filed: May 6, 2014
    Publication date: December 25, 2014
    Inventors: Margaret M. Wu, Norman Yang, Lisa S. Baugh, Jo Ann M. Canich, Steven P. Rucker, John F. Walzer, JR., Gordon H. Lee, Frederick Y. Lo, Andrew Jackson, Mark P. Hagemeister, Shakeel Tirmizi, Peijun Jiang, Chia S. Chee
  • Patent number: 8748361
    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: Grant
    Filed: June 2, 2006
    Date of Patent: June 10, 2014
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret May-Som Wu, Lisa Saunders Baugh, Jo Ann Marie 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
  • Patent number: 8614277
    Abstract: Isotactic polypropylene ethylene-propylene copolymer blends and in-line processes for producing. The blends 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: Grant
    Filed: February 13, 2012
    Date of Patent: December 24, 2013
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Gabor Kiss, Patrick Brant, Robert Patrick Reynolds, Jr., Aspy K. Mehta, Manika Varma-Nair, John W. Chu, Steven P. Rucker
  • Patent number: 8530712
    Abstract: This disclosure relates to a liquid syndiotactic polyalphaolefin, sPAO, comprising one or more C4 to C24 monomers, said sPAO having: a) an rr triad content of 5 to 50% as measured by 13C NMR; b) an mr triad content of 25 to 60% as measured by 13C NMR, where the mr to mm triad ratio is at least 1.0; c) a pour point of Z ° C. or less, where Z=0.0648X?51.2, where X=kinematic viscosity at 100° C. as reported in centistokes (cSt); d) a kinematic viscosity at 100° C. of 100 cSt or more (alternatively 200 cSt or more); e) a ratio of mr triads to rr triad (as determined by 13C NMR) of less than 9; f) a ratio of vinylidene to 1,2-disubstituted olefins (as determined by 1H NMR) of less than 8; g) a viscosity index of 120 or more; and h) an Mn of 40,000 or less. This disclosure further relates to processes to make and use sPAOs, including those having any combination of characteristics a) to h).
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: September 10, 2013
    Assignee: Exxonmobil Chemical Patents Inc.
    Inventors: Margaret M. Wu, Steven P. Rucker, Jo Ann M. Canich
  • Publication number: 20130131410
    Abstract: This disclosure relates to a liquid syndiotactic polyalphaolefin, sPAO, comprising one or more C4 to C24 monomers, said sPAO having: a) an rr triad content of 5 to 50% as measured by 13C NMR; b) an mr triad content of 25 to 60% as measured by 13C NMR, where the mr to mm triad ratio is at least 1.0; c) a pour point of Z ° C. or less, where Z=0.0648X?51.2, where X=kinematic viscosity at 100° C. as reported in centistokes (cSt); d) a kinematic viscosity at 100° C. of 100 cSt or more (alternatively 200 cSt or more); e) a ratio of mr triads to rr triad (as determined by 13C NMR) of less than 9; f) a ratio of vinylidene to 1,2-disubstituted olefins (as determined by 1H NMR) of less than 8; g) a viscosity index of 120 or more; and h) an Mn of 40,000 or less. This disclosure further relates to processes to make and use sPAOs, including those having any combination of characterics a) to h).
    Type: Application
    Filed: January 2, 2013
    Publication date: May 23, 2013
    Applicant: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret May-Som Wu, Steven P. Rucker, Jo Ann M. Canich
  • Patent number: 8318875
    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: Grant
    Filed: November 4, 2008
    Date of Patent: November 27, 2012
    Assignee: Exxonmobil Chemical Patents Inc.
    Inventors: Aspy K. Mehta, Manika Varma-Nair, Gabor Kiss, Robert P. Reynolds, John W. Chu, Steven P. Rucker
  • Publication number: 20120225998
    Abstract: Isotactic polypropylene ethylene-propylene copolymer blends and in-line processes for producing. The blends 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: February 13, 2012
    Publication date: September 6, 2012
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Gabor Kiss, Patrick Brant, Robert Patrick Reynolds, JR., Aspy K. Mehta, Manika Varma-Nair, John W. Chu, Steven P. Rucker
  • Patent number: 8138269
    Abstract: Isotactic polypropylene ethylene-propylene copolymer blends and in-line processes for producing them. The blends 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: Grant
    Filed: December 18, 2008
    Date of Patent: March 20, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Gabor Kiss, Patrick Brant, Robert Patrick Reynolds, Jr., Aspy K. Mehta, Manika Varma-Nair, John W. Chu, Steven P. Rucker
  • Patent number: 8080501
    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: Grant
    Filed: February 6, 2009
    Date of Patent: December 20, 2011
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: Jacob J. Habeeb, Douglas E. Deckman, Brandon T. Weldon, Steven P. Rucker, Michael E. Landis
  • Patent number: 7989407
    Abstract: The present invention is directed to lubricating oils exhibiting improved resistance to oxidation and deposit/sludge formation comprising a lubricant base oil and an effective amount of a catalytic antioxidant comprising one or more polymetal organometallic compound, to a method for improving the antioxidancy and the resistance to deposit/sludge formation of formulated lubricating oil compositions by the addition thereto of an effective amount of the aforementioned polymetal organometallic compound, and to an additive concentrate containing the aforementioned polymetal organometallic compound.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: August 2, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Jacob J. Habeeb, Steven P. Rucker, Michael E. Landis, Abhimanyu O. Patil
  • Patent number: 7989670
    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: Grant
    Filed: January 22, 2007
    Date of Patent: August 2, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret May-Som Wu, Catalina L. Coker, John F. Walzer, Jr., Peijun Jiang, Steven P. Rucker
  • Publication number: 20110160502
    Abstract: This disclosure relates to a liquid syndiotactic polyalphaolefin, sPAO, comprising one or more C4 to C24 monomers, said sPAO having: a) an rr triad content of 5 to 50% as measured by 13C NMR; b) an mr triad content of 25 to 60% as measured by 13C NMR, where the mr to mm triad ratio is at least 1.0; c) a pour point of Z ° C. or less, where Z=0.0648X-51.2, where X=kinematic viscosity at 100° C. as reported in centistokes (cSt); d) a kinematic viscosity at 100° C. of 100 cSt or more (alternatively 200 cSt or more); e) a ratio of mr triads to rr triad (as determined by 13C NMR) of less than 9; f) a ratio of vinylidene to 1,2-disubstituted olefins (as determined by 1H NMR) of less than 8; g) a viscosity index of 120 or more; and h) an Mn of 40,000 or less. This disclosure further relates to processes to make and use sPAOs, including those having any combination of characteristics a) to h).
    Type: Application
    Filed: December 17, 2010
    Publication date: June 30, 2011
    Inventors: Margaret M. Wu, Steven P. Rucker, Jo Ann M. Canich
  • Patent number: 7910679
    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: Grant
    Filed: November 14, 2008
    Date of Patent: March 22, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Gabor Kiss, Robert Patrick Reynolds, Jr., John W. Chu, Steven P. Rucker, James Richardson Lattner
  • Publication number: 20100292424
    Abstract: This invention discloses an improved process which employs mixed alpha-olefins as feed over activated metallocene catalyst systems to provide essentially random liquid polymers particularly useful in lubricant components or as functional fluids.
    Type: Application
    Filed: July 14, 2006
    Publication date: November 18, 2010
    Inventors: Margaret M. Wu, Norman Yang, Phil Surana, Anura Patil, Steven P. Rucker, Kuangnan Qian, Shakeel Tirmizi, Mark P. Hagemeister