Method for Suspension of Solid Particles in Polyamic Acid Solution
Original Publication Date: 1986-Mar-01
Included in the Prior Art Database: 2005-Mar-08
Preparation of uniform coatings with suspended organic particles is accomplished prior to and concomitant with the synthesis of polyamic acid solution. Inorganic particles (i.e., powders of glass, copper, graphite, aluminum, (iron oxide) Fe2O3, etc.) are blended into a solution and reduced in size, prior to complete preparation of the intended polymer binder. The method precludes use of surfactants in suspending the inorganic solids and yields more homogeneous and longer life polyamic solutions.