Patents by Inventor David Lewis Zimmerman, Jr.

David Lewis Zimmerman, Jr. 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).

  • Method of emulsion polymerization
    Patent number: 8008396
    Abstract: There is provided a process of emulsion polymerization comprising (a) adding a reactive mixture to a reaction vessel, said reactive mixture comprising water, one or more emulsifier, one or more monomer, and one or more initiator, (b) providing conditions in which said reactive mixture undergoes emulsion polymerization, and (c) passing some of the contents of said reaction vessel through a recirculating loop comprising a low-shear pump and a plate and frame heat exchanger having gap width of 6 to 18 mm, wherein more than 50% of the heat produced by said emulsion polymerization is removed from the contents of said reaction vessel by said plate and frame heat exchanger.
    Type: Grant
    Filed: April 2, 2009
    Date of Patent: August 30, 2011
    Assignee: Rohm and Haas Company
    Inventors: William Douglas Rohrbach, David Lewis Zimmerman, Jr.
  • Method of emulsion polymerization
    Publication number: 20090253861
    Abstract: There is provided a process of emulsion polymerization comprising (a) adding a reactive mixture to a reaction vessel, said reactive mixture comprising water, one or more emulsifier, one or more monomer, and one or more initiator, (b) providing conditions in which said reactive mixture undergoes emulsion polymerization, and (c) passing some of the contents of said reaction vessel through a recirculating loop comprising a low-shear pump and a plate and frame heat exchanger having gap width of 6 to 18 mm, wherein more than 50% of the heat produced by said emulsion polymerization is removed from the contents of said reaction vessel by said plate and frame heat exchanger.
    Type: Application
    Filed: April 2, 2009
    Publication date: October 8, 2009
    Inventors: William Douglas Rohrbach, David Lewis Zimmerman, JR.