Patents by Inventor Mark D Leatherman

Mark D Leatherman 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: 10017688
    Abstract: Proppant materials, and methods for making proppant materials, are provided. In one embodiment, the proppant material comprises a substrate material, a polymeric material disposed on the substrate material, a surface wettability modifier disposed on the polymeric material, and a surfactant material disposed on the surface wettability modifier. A consolidation material may also be disposed on the polymeric material or formed as part of the polymeric material.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: July 10, 2018
    Assignee: HEXION INC.
    Inventors: John W. Green, Silje V. Nordas, Mark D. Leatherman
  • Patent number: 9988404
    Abstract: There is provided herein a polyalkylene-oxide-free surfactant composition comprising an ester-modified organosilicon having the general formula (I) AOaR4b(BOcR11d)e(C)fDg. There is also provided methods for making the ester-modified organosilicon (I) and agricultural, coating, personal care and home care applications containing the polyalkylene-oxide-free surfactant composition.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: June 5, 2018
    Assignee: Momentive Performance Materials Inc.
    Inventors: George A. Policello, Narayan Mukherjee, Roland Wagner, Mark D. Leatherman
  • Publication number: 20170291914
    Abstract: There is provided herein a polyalkylene-oxide-free surfactant composition comprising an ester-modified organosilicon having the general formula (I) AOaR4b(BOcR11d)e(C)fDg. There is also provided methods for making the ester-modified organosilicon (I) and agricultural, coating, personal care and home care applications containing the polyalkylene-oxide-free surfactant composition.
    Type: Application
    Filed: April 7, 2016
    Publication date: October 12, 2017
    Inventors: George A. Policello, Narayan Mukherjee, Roland Wagner, Mark D. Leatherman
  • Patent number: 9701883
    Abstract: A composition for treating an aqueous fluid includes an ionic polyacrylamide and a silicon polyether. The composition can be an oil-in-water emulsion or a water-in-oil emulsion. The ionic polyacrylamide can be an anionic polyacrylamide or a cationic polyacrylamide. The composition can be employed, for example, as a friction reducing additive for water based fracturing fluid, or a drilling mud additive.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: July 11, 2017
    Assignee: Momentive Performance Materials Inc.
    Inventors: Mukesh Kumar, Kalman Koczo, Kostas Spyropoulos, John Terracina, Mark D. Leatherman, Benjamin Falk, Olusegun Matthew Falana
  • Publication number: 20150240144
    Abstract: A composition for treating an aqueous fluid includes an ionic polyacrylamide and a silicon polyether. The composition can be an oil-in-water emulsion or a water-in-oil emulsion. The ionic polyacrylamide can he an anionic polyacrylamide or a cationic polyacrylamide. The composition can he employed, for example, as a friction reducing additive for water based fracturing fluid, or a drilling mud additive.
    Type: Application
    Filed: May 16, 2014
    Publication date: August 27, 2015
    Inventors: Mukesh Kumar, Kalman Koczo, Kostas Spyropoulos, John Terracina, Mark D. Leatherman, Benjamin Falk, Olusegun Matthew Falana
  • Patent number: 8664422
    Abstract: A silicone composition comprising a formula: (M1)a(D1)b(D2)c wherein M1=R1R2R3SiO1/2, D1=R4R5SiO2/2; and D2=R6R7SiO2/2; wherein R1 is independently at each occurrence a monovalent hydrocarbon radical comprising a reactive end-group other than an amino group; R6 comprises a monovalent poly(oxyalkyl)hydrocarbon radical; and R2, R3, R4, R5, and R7 are independently monovalent hydrocarbon radicals; wherein a, b, and c are stoichiometric subscripts that are zero or positive subject to the following limitations: a is greater than or equal to 2; c is greater than or equal to 1; and when b=0, a+c is greater than or equal to 3 is disclosed.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: March 4, 2014
    Assignee: Momentive Performance Materials Inc.
    Inventors: Vikram Kumar, Mark D. Leatherman, Suresh Rajaraman, Anubhav Saxena
  • Publication number: 20130296595
    Abstract: A silicone composition comprising a formula: (M1)a(D1)b(D2)c wherein M1=R1R2R3SiO1/2, D1=R4R5SiO2/2; and D2=R6R7SiO2/2; wherein R1 is independently at each occurrence a monovalent hydrocarbon radical comprising a reactive end-group other than an amino group; R6 comprises a monovalent poly(oxyalkyl)hydrocarbon radical; and R2, R3, R4, R5, and R7 are independently monovalent hydrocarbon radicals; wherein a, b, and c are stoichiometric subscripts that are zero or positive subject to the following limitations: a is greater than or equal to 2; c is greater than or equal to 1; and when b=0, a+c is greater than or equal to 3 is disclosed.
    Type: Application
    Filed: July 2, 2013
    Publication date: November 7, 2013
    Inventors: Vikram Kumar, Mark D. Leatherman, Suresh Rajaraman, Anubhav Saxena
  • Patent number: 8569385
    Abstract: The present invention provides for a composition comprising a silane having the formula: (R1)(R2)(R3)Si—R4—Si(R5)(R6)(R7) wherein R1, R2, R3, R5, and R6 are each independently selected from the group consisting of 1 to 6 monovalent hydrocarbon radicals, aryl, and a hydrocarbon group of 7 to 10 carbons containing an aryl group; R4 is a hydrocarbon group of 1 to 3 carbons; R7 comprises an anionic, cationic or zwitterionic substituent. The silanes of the present invention exhibit resistance to hydrolysis over a wide pH range.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: October 29, 2013
    Assignee: Momentive Performance Materials Inc.
    Inventors: Mark D. Leatherman, George A. Policello, Wenqing N. Peng, Liping Zeng, Ronald Wagner, Suresh K. Rajamaran, Zijun Xia
  • Patent number: 8524934
    Abstract: A silicone composition comprising a formula: (M1)a(D1)b(D2)c wherein M1=R1R2R3SiO1/2; D1=R4R5SiO2/2; and D2=R6R7SiO2/2; wherein R1 is independently at each occurrence a monovalent hydrocarbon radical comprising a reactive end- group other than an amino group; R6 comprises a monovalent poly(oxyalkyl) hydrocarbon radical; and R2, R3, R4, R5, and R7 are independently monovalent hydrocarbon radicals; wherein a, b, and c are stoichiometric subscripts that are zero or positive subject to the following limitations: a is greater than or equal to 2; c is greater than or equal to 1; and when b=0, a+c is greater than or equal to 3 is disclosed.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: September 3, 2013
    Assignee: Momentive Performance Materials Inc.
    Inventors: Vikram Kumar, Mark D. Leatherman, Suresh Rajaraman, Anubhav Saxena
  • Patent number: 8491876
    Abstract: Compositions comprising disiloxane surfactant compositions comprising a silicone composition comprising a silicone having the formula: MM? where M=R1R2R3SiO1/2; M?=R4R5R6SiO1/2; with R1 selected from the group consisting of branched monovalent hydrocarbon radical of from 3 to 6 carbon atoms and R7, where R7 has the formula: R8R9R10SiR12 with R8, R9, and R10 each independently selected from the group of monovalent hydrocarbon radicals having from 1 to 6 carbon atoms and monovalent aryl or alkaryl hydrocarbon radicals having from 6 to 13 carbon atoms and R12 is a divalent hydrocarbon radical having from 1 to 3 carbon atoms, R2 and R3 are each independently selected from the group of from 1 to 6 carbon atom monovalent hydrocarbon radicals or R1, with R4 an alkylpolyalkyleneoxide of the general formula: R13(C2H4O)a(C3H6O)b(C4H8O)cR14 where R13 is a divalent linear or branched hydrocarbon radical having the structure: —CH2—CH(R15)(R16)dO— where R15 is H or methyl; R16 is a divalent alkyl radical of
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: July 23, 2013
    Assignee: Momentive Performance Materials Inc.
    Inventors: Mark D. Leatherman, George A. Policello, Suresh K. Rajaramaran
  • Patent number: 8470894
    Abstract: The present invention provides for a composition comprising a siloxane having the formula: M1DM2 wherein M1=(R1)(R2)(R3)SiO1/2; M2=(R4)(R5)(R6)SiO1/2 and D=(R7)(Z)SiO2/2 where R1, R2, R3 R4, R5, R6 and R7 are each independently selected from the group consisting of 1 to 4 carbon monovalent hydrocarbon radicals, aryl, and a hydrocarbon group of 4 to 9 carbons containing an aryl group; Z is a pendant hydrophilic ionic group selected from the group consisting of R8—RA, R9-RC, and R10—RZ; RA being an anionic substituent, RC a cationic substituent or RZ a zwitterionic substituent on the D group wherein said siloxane has an enhanced resistance to hydrolysis at a pH below 6 or a pH above 7.5.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: June 25, 2013
    Assignee: Momentive Performance Materials
    Inventors: Mark D. Leatherman, George A. Policello, Wenqing N. Peng, Liping Zheng, Roland Wagner, Suresh K. Rajaraman, Zijun Xia
  • Patent number: 8461092
    Abstract: Compositions comprising disiloxane surfactant compositions comprising a silicone composition comprising a silicone having the formula: MM? where M=R1R2R3SiO1/2; M?=R4R5R6SiO1/2; with R1 selected from the group consisting of branched monovalent hydrocarbon radical of from 3 to 6 carbon atoms and R7, where R7 has the formula: R8R9R10SiR12 with R8, R9, and R10 each independently selected from the group of monovalent hydrocarbon radicals having from 1 to 6 carbon atoms and monovalent aryl or alkaryl hydrocarbon radicals having from 6 to 13 carbon atoms and R12 is a divalent hydrocarbon radical having from 1 to 3 carbon atoms, R2 and R3 are each independently selected from the group of from 1 to 6 carbon atom monovalent hydrocarbon radicals or R1, with R4 an alkylpolyalkyleneoxide of the general formula: R13(C2H4O)a(C3H6O)b(C4H8O)cR14 where R13 is a divalent linear or branched hydrocarbon radical having the structure: —CH2—CH(R15)(R16)dO— where R15 is H or methyl; R16 is a divalent alkyl radical of
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: June 11, 2013
    Assignee: Momentive Performance Materials Inc.
    Inventors: Mark D. Leatherman, George A. Policello, Suresh K. Rajaramaran
  • Patent number: 8367740
    Abstract: An asymmetric organomodified disiloxane surfactant having the formula: MM? wherein M comprises branched hydrocarbon substituents and M? comprises a cationic, anionic or zwitterionic substituent and a polyether substituent that may be combined as one moiety, wherein the disiloxane surfactant has an enhanced resistance to hydrolysis between a pH of about 3 to about 12.
    Type: Grant
    Filed: December 26, 2008
    Date of Patent: February 5, 2013
    Assignee: Momentive Performance Materials Inc.
    Inventors: Mark D. Leatherman, George A. Policello, Wenqing N. Peng, Liping Zheng, Roland Wagner, Suresh K. Rajaraman, Xia Zijun
  • Patent number: 8362124
    Abstract: The present invention relates to coating and printing ink compositions containing silylated polyether compounds comprising a hydrolysis-resistant bis-silyl hydrocarbylene group. More particularly, the silylated polyether compound comprising a bis-silyl hydrocarbylene group provides to the coating and ink compositions formulation flexibility over the entire pH range, leveling-and-flow and surface wetting, and are non-reactive with the other components of the coating and ink compositions, thereby providing long-term shelf-stability of formulated coatings and inks. These coating and ink compositions containing silylated polyether compounds do not release silicone materials and thereby provide articles treated with these coatings and ink compositions with uniform appearance and gloss.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: January 29, 2013
    Assignee: Momentive Performance Materials Inc.
    Inventors: Suresh K. Rajaraman, Eric R. Pohl, Mark D. Leatherman, George A. Policello
  • Patent number: 8329255
    Abstract: The present invention provides a crosslinkable polysiloxane-containing composition and a process for treating a textile with the composition whereby desirable properties, such as water repellency and durability, are enhanced.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: December 11, 2012
    Assignee: Momentive Performance Materials Inc.
    Inventors: Wanchao Jiang, Yong Long, Shingo Tabei, Uche Kelechi Anyanwu, Mark D. Leatherman, Zhipeng Zheng
  • Patent number: 8263669
    Abstract: The present invention provides for a composition comprising a siloxane having the formula: M1D M2 wherein M1=(R1)(R2)(R3)SiO1/2; M2=(R4)(R5)(R6)SiO1/2 and D=(R7)(Z)SiO2/2 where R1, R2, R3 R4, R5, R6 and R7 are each independently selected from the group consisting of 1 to 4 carbon monovalent hydrocarbon radicals, aryl, and a hydrocarbon group of 4 to 9 carbons containing an aryl group; Z is a pendant hydrophilic ionic group selected from the group consisting of R8—RA, R9 Rc and R10—RZ; RA being an anionic substituent, Rc a cationic substituent or Rz a zwitterionic substituent on the D group wherein the composition is resistant to hydrolysis under either basic or acidic conditions.
    Type: Grant
    Filed: December 26, 2008
    Date of Patent: September 11, 2012
    Assignee: Momentive Performance Materials Inc.
    Inventors: Mark D. Leatherman, George A. Policello, Wenging N. Peng, Liping Zheng, Roland Wagner, Suresh K. Rajaraman, Xia Zijun
  • Patent number: 8217129
    Abstract: An asymmetric siloxane is made by reacting a silicone having the formula MHDxM?H where MH is R1R2HSiO1/2, M?H is R4R5HSiO1/2 and x is an integer 0?x?10 under selective hydrosilylation conditions in the presence of a precious metal hydrosilylation catalyst, with a first olefinic compound and in a second step, a monohydridosiloxane produced in the first step is reacted under hydrosilylating conditions with another olefinic compound different from the first olefinic compound.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: July 10, 2012
    Assignee: Momentive Performance Materials
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
  • Publication number: 20120142535
    Abstract: The present invention provides for a composition comprising a siloxane having the formula: M1DM2 wherein M1=(R1)(R2)(R3)SiO1/2; M2=(R4)(R5)(R6)SiO1/2 and D=(R7)(Z)SiO2/2 where R1, R2, R3, R4, R5, R6 and R7 are each independently selected from the group consisting of 1 to 4 carbon monovalent hydrocarbon radicals, aryl, and a hydrocarbon group of 4 to 9 carbons containing an aryl group; Z is a pendant hydrophilic ionic group selected from the group consisting of R8—RA, R9-RC, and R10—RZ; RA being an anionic substituent, RC a cationic substituent or RZ a zwitterionic substituent on the D group wherein said siloxane has an enhanced resistance to hydrolysis at a pH below 6 or a pH above 7.5.
    Type: Application
    Filed: October 3, 2011
    Publication date: June 7, 2012
    Inventors: MARK D. LEATHERMAN, George A. Policello, Wenqing N. Peng, Liping Zheng, Roland Wagner, Suresh K. Rajaraman, Zijun Xia
  • Publication number: 20120142955
    Abstract: A silicone composition comprising a formula: (M1)a(D1)b(D2)c wherein M1=R1R2R3SiO1/2; D1=R4R5SiO2/2; and D2=R6R7SiO2/2; wherein R1 is independently at each occurrence a monovalent hydrocarbon radical comprising a reactive end-group other than an amino group; R6 comprises a monovalent poly(oxyalkyl) hydrocarbon radical; and R2, R3, R4, R5, and R7 are independently monovalent hydrocarbon radicals; wherein a, b, and c are stoichiometric subscripts that are zero or positive subject to the following limitations: a is greater than or equal to 2; c is greater than or equal to 1; and when b=0, a+c is greater than or equal to 3 is disclosed.
    Type: Application
    Filed: March 27, 2008
    Publication date: June 7, 2012
    Inventors: Vikram Kumar, Mark D. Leatherman, Suresh Rajaraman, Anubhav Saxena
  • Patent number: 8183317
    Abstract: A coating composition includes a silicone and a coating resin. The silicone has the formula MM? where M=R1R2R3SiO1/2 and M?=R4R5R6SiO1/2. R1 can be a branched monovalent hydrocarbon radical of from 3 to 6 carbon atoms or R7, where R7 has the formula R8R9R10SiR12 wherein R8, R9, and R10 can independently be monovalent hydrocarbon radicals having from 1 to 6 carbon atoms and monovalent aryl or alkaryl hydrocarbon radicals having from 6 to 13 carbon atoms. R12 is a divalent hydrocarbon radical having from 1 to 3 carbon atoms. R2 and R3 can be from 1 to 6 carbon atom monovalent hydrocarbon radicals or R1, with R4 being an alkylpolyalkyleneoxide. And R5 and R6 are each independently selected from the group of monovalent hydrocarbon radicals having from 1 to 6 carbon atoms or R4 that exhibit resistance to hydrolysis over a wide pH range.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: May 22, 2012
    Assignee: Momentive Performance Materials Inc.
    Inventors: Mark D. Leatherman, George A. Policello, Suresh K. Rajaramaran