Patents Represented by Attorney Brahm J. Cornstanje

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  • Precipitation of homogeneous polymer mixtures from supercritical fluid solutions
    Patent number: 5290827
    Abstract: Homogeneous polymer blends are prepared from otherwise thermodynamically immiscible polymers. Thus, mixtures of polymers such as poly (methyl methacrylate) and poly (ethyl methacrylate) are dissolved under pressure in supercritical fluid solvents such as chlorodifluoromethane and expanded through a fine nozzle. As the SCF solvent evaporates, the polymer mixture deposits as a substantially homogeneous blend.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: March 1, 1994
    Assignee: University of Delaware
    Inventor: Annette D. Shine