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).

  • Polyalkylene oxide asymmetric siloxane
    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
  • Incorporating an asymmetrical siloxane into a composition in need of hydrolysis resistance
    Patent number: 7968666
    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. The formed asymmetric siloxane is incorporated into a composition in need of hydrolysis resistance.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: June 28, 2011
    Assignee: Momentive Performance Materials Inc.
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
  • Asymmetrical siloxane
    Patent number: 7947798
    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: May 28, 2007
    Date of Patent: May 24, 2011
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
  • Hydrosilylating an isolated monohydridosiloxane
    Patent number: 7897713
    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: June 7, 2007
    Date of Patent: March 1, 2011
    Assignee: Momentive Performance Materials Inc.
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
  • Selective hydrosilylation method with rhodium catalyst
    Patent number: 7834118
    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: August 14, 2006
    Date of Patent: November 16, 2010
    Assignee: Momentive Performance Materials Inc
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
  • Tetramethyl siloxane reaction
    Patent number: 7829734
    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 an 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: August 14, 2006
    Date of Patent: November 9, 2010
    Assignee: Momentive Performance Materials Inc
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
  • Selective hydrosilylation method with alcohol or epoxide reactant and product
    Patent number: 7605219
    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: May 28, 2007
    Date of Patent: October 20, 2009
    Assignee: Momentive Performance Materials
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
  • ASYMMETRICAL SILOXANE
    Publication number: 20080076895
    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: Application
    Filed: May 28, 2007
    Publication date: March 27, 2008
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
  • SELECTIVE HYDROSILYLATION METHOD WITH ALCOHOL OR EPOXIDE REACTANT AND PRODUCT
    Publication number: 20080076894
    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: Application
    Filed: May 28, 2007
    Publication date: March 27, 2008
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
  • Selective hydrosilylation method and product
    Patent number: 7326761
    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: August 14, 2006
    Date of Patent: February 5, 2008
    Assignee: General Electric Company
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman
  • Selective hydrosilylation method
    Patent number: 7259220
    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 olefine compound and in a second step, a monohydridosiloxane produced in the first step is reacted under hydrosilylating condtions with another olefine compound different from the first olefine compound.
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: August 21, 2007
    Assignee: General Electric Company
    Inventors: David D Farris, Chauncey J Rinard, Mark D Leatherman