PolyOne CEO/President steps down (POL) 5.49 :Co announced that Thomas A. Waltermire has stepped down as the co's president, CEO and director, effective immediately. The board has asked William F. Patient, non-executive chairman of the board, to serve as interim CEO until a permanent successor is named. Waltermire stated, "As the company enters the next phase of its strategic evolution, the Board and I agree that the time is right for new leadership."