Patents by Inventor Donald S. Morehouse, Jr.

Donald S. Morehouse, 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).

  • Emulsion polymerization method for preparing microspheres having liquid center and seamless rigid walls
    Patent number: 4075134
    Abstract: Aqueous dispersions of normally solid, organic polymeric particles are prepared by (1) dispersing an oil phase containing at least one emulsion polymerizable monomer such as styrene in an aqueous phase containing a stabilizing emulsifier such as sodium dodecyl benzene sulfonate and a polymer of a sulfohydrocarbyl ester of an .alpha., .beta.-ethylenically unsaturated carboxylic acid such as a 2-sulfoethyl methacrylate/n-butyl acrylate copolymer and (2) subjecting the dispersion to emulsion polymerization. Microspheres having liquid centers and seamless rigid walls of a normally solid, organic polymer are prepared according to the above method except that the starting oil phase also contains a non-polymerizable, water-insoluble liquid such as hexane.
    Type: Grant
    Filed: September 27, 1973
    Date of Patent: February 21, 1978
    Assignee: The Dow Chemical Company
    Inventors: Donald S. Morehouse, Jr., Frank H. Bolton, deceased, by Kathryn M. Bolton, administratrix
  • Emulsion polymerization method for preparing aqueous dispersions of organic polymer particles
    Patent number: 4049604
    Abstract: Aqueous dispersions of normally solid, organic polymeric particles are prepared by (1) dispensing an oil phase containing at least one emulsion polymerizable monomer such as styrene in an aqueous phase containing a stabilizing emulsifier such as sodium dodecyl benzene sulfonate and a polymer of a sulfo ester of an .alpha.,.beta.-ethylenically unsaturated carboxylic acid such as a 2-sulfoethyl methacrylate n-butyl acrylate copolymer and (2) subjecting the dispersion to emulsion polymerization. Microspheres having liquid centers and seamless rigid walls of a normally solid, organic polymer are prepared according to the above method except that the starting oil phase also contains a non-polymerizable, water-insoluble liquid such as hexane.
    Type: Grant
    Filed: June 8, 1970
    Date of Patent: September 20, 1977
    Assignee: The Dow Chemical Company
    Inventors: Donald S. Morehouse, Jr., Frank Harold Bolton, deceased