ADJUSTMENT OF PH OF POLYVINYL PYRROLIDONE AND POLYVINYL PYRROLIDONE HAVING PH ADJUSTED WITH SAME AND SCREEN PRINTING ELECTROLYTE COMPOSITION CONTAINING THE SAME AND OXYGEN ELECTRODE USING THE COMPOSITION AND ITS PRODUCTION

摘要

PURPOSE: To stably adjust the pH of polyvinyl pyrrolidone by dissolving the polyvinyl pyrrolidone in a buffer solution having a prescribed pH value and subsequently removing the buffer solution component from the solution. ;CONSTITUTION: Polyvinyl pyrrolidone is dissolved in a buffer solution having a prescribed pH value, and the buffer solution component is removed from the obtained solution preferably by a gel filtration method or by a dialysis method. The buffer solution may be that usually used as a pH buffer solution such as a phosphoric acid buffer solution, acetic acid buffer solution or a citric acid buffer solution. An electrolytic composition for screen printing is obtained by dispersing a fine powdery inorganic salt capable of passing through a mesh for screen printing in a polyvinyl pyrrolidine organic solvent solution controlled to the above-mentioned pH.;COPYRIGHT: (C)1993,JPO&Japio