Patents Assigned to Chang I. Chung
  • Patent number: 5665289
    Abstract: A new class of binders for binding finely divided inert inorganic molding particles when shaped into objects by known mechanical shaping techniques such as injection molding. The novel binders are solid polymer solutions containing a major fraction of a low molecular weight solid relatively non-volatile chemical as solvent in which is substantially dissolved a minor fraction of at least one high molecular weight solid polymer. The solid polymer solution binders when molten are homogeneous solutions and can be readily uniformly mixed with the usual inorganic molding particles into a readily flowable mixture which can be shaped and solidified. When solidified, the polymer and solid chemical remain a substantially homogeneous solution without appreciable phase separation.
    Type: Grant
    Filed: March 8, 1995
    Date of Patent: September 9, 1997
    Assignee: Chang I. Chung
    Inventors: Chan I. Chung, Miao Yong Cao