Patents by Inventor Melissa Merlau Johnson

Melissa Merlau Johnson 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).

  • Publication number: 20110281980
    Abstract: A composition and method whereby the same group that is attached to or within the backbone of an associative thickener is reversibly switched between being hydrophilic and hydrophobic in nature. When the group that is attached to or within the backbone is rendered hydrophilic, the aqueous thickener is pourable and readily incorporated into aqueous polymer compositions. When this group is rendered hydrophobic, the thickener performs its thickening function efficiently. Switching is readily accomplished by adjusting the pH of the associative thickener composition and the aqueous polymer composition being thickened. The thickeners may be prepared from monomers by an all-aqueous solution polymerization.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 17, 2011
    Inventors: Barrett Richard Bobsein, Melissa Merlau Johnson, Thomas Glenn Madle, John Joseph Rabasco
  • Patent number: 7985795
    Abstract: A polymer composition with blocks of hydrophobes attached to or within the backbone of an associative thickener. The blocks are composed of two or more units of the same or different hydrophobes whereby the hydrophobe is reversibly switched between being hydrophilic and hydrophobic in nature. When the hydrophobe is rendered hydrophilic, the aqueous thickener is pourable and readily incorporated into aqueous polymer compositions. When this hydrophobe is rendered hydrophobic, the thickener performs its thickening function efficiently, especially in tinted systems. Switching is readily accomplished by adjusting the pH of the associative thickener composition and the aqueous polymer composition being thickened.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: July 26, 2011
    Assignee: Rohm and Haas Company
    Inventors: Barrett Richard Bobsein, Melissa Merlau Johnson, Joseph Joseph Rabasco, Ling Li
  • Patent number: 7893151
    Abstract: A liquid applied sound damping composition with a binder having from 0.05 wt. % to 20 wt. %, based on the total weight of polymer solids, of carboxy acid monomers, present as copolymerized monomers in pendant polyacid sidechain groups.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: February 22, 2011
    Assignee: Rohm and Haas Company
    Inventors: Melissa Merlau Johnson, Andrew J. Swartz, Drew E. Williams
  • Publication number: 20100286434
    Abstract: New ethylenically unsaturated monomers are provided that can be (co)polymerized to provide a composition and method whereby the same group that is attached to or within the backbone of an associative thickener is reversibly switched between being hydrophilic and hydrophobic in nature. When the group that is attached to or within the backbone is rendered hydrophilic, the aqueous thickener is pourable and readily incorporated into aqueous polymer compositions. When this group is rendered hydrophobic, the thickener performs its thickening function efficiently. Switching is readily accomplished by adjusting the pH of the associative thickener composition and the aqueous polymer composition being thickened. The thickeners are prepared from the novel monomers by an aqueous solution polymerization.
    Type: Application
    Filed: May 28, 2010
    Publication date: November 11, 2010
    Inventors: Barrett Richard Bobsein, Melissa Merlau Johnson, Thomas Glenn Madle, John Joseph Rabasco
  • Patent number: 7803864
    Abstract: A method for improving the viscosity stability of an aqueous composition having a latex polymer and associative thickeners with at least one hydrophilic segment and at least two hydrophobic segments is provided. The associative thickeners are chosen such that one associative thickener has a lower molecular weight than the other associative thickener.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: September 28, 2010
    Assignee: Rohm and Haas Company
    Inventors: Barrett Richard Bobsein, Melissa Merlau Johnson, Lifeng Zhang
  • Patent number: 7741402
    Abstract: A composition and method whereby the same group that is attached to or within the backbone of an associative thickener is reversibly switched between being hydrophilic and hydrophobic in nature. When the group that is attached to or within the backbone is rendered hydrophilic, the aqueous thickener is pourable and readily incorporated into aqueous polymer compositions. When this group is rendered hydrophobic, the thickener performs its thickening function efficiently. Switching is readily accomplished by adjusting the pH of the associative thickener composition and the aqueous polymer composition being thickened.
    Type: Grant
    Filed: October 11, 2007
    Date of Patent: June 22, 2010
    Assignee: Rohm and Haas Company
    Inventors: Barrett Richard Bobsein, Melissa Merlau Johnson, John Joseph Rabasco, Carol Zeszotarski
  • Publication number: 20100076145
    Abstract: A polymer composition with blocks of hydrophobes attached to or within the backbone of an associative thickener. The blocks are composed of two or more units of the same or different hydrophobes whereby the hydrophobe is reversibly switched between being hydrophilic and hydrophobic in nature. When the hydrophobe is rendered hydrophilic, the aqueous thickener is pourable and readily incorporated into aqueous polymer compositions. When this hydrophobe is rendered hydrophobic, the thickener performs its thickening function efficiently, especially in tinted systems. Switching is readily accomplished by adjusting the pH of the associative thickener composition and the aqueous polymer composition being thickened.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 25, 2010
    Inventors: Barrett Richard Bobsein, Melissa Merlau Johnson, Joseph Joseph Rabasco, Ling Li
  • Publication number: 20090121174
    Abstract: A liquid applied sound damping composition with a binder having from 0.05 wt. % to 20 wt. %, based on the total weight of polymer solids, of carboxy acid monomers, present as copolymerized monomers in pendant polyacid sidechain groups.
    Type: Application
    Filed: June 20, 2008
    Publication date: May 14, 2009
    Inventors: Melissa Merlau Johnson, Andrew J. Swartz, Drew E. Williams
  • Publication number: 20080234411
    Abstract: A composition and method whereby the same group that is attached to or within the backbone of an associative thickener is reversibly switched between being hydrophilic and hydrophobic in nature. When the group that is attached to or within the backbone is rendered hydrophilic, the aqueous thickener is pourable and readily incorporated into aqueous polymer compositions. When this group is rendered hydrophobic, the thickener performs its thickening function efficiently. Switching is readily accomplished by adjusting the pH of the associative thickener composition and the aqueous polymer composition being thickened.
    Type: Application
    Filed: October 11, 2007
    Publication date: September 25, 2008
    Inventors: Barrett Richard Bobsein, Melissa Merlau Johnson, John Joseph Rabasco, Carol Zeszotarski