Texas-based sugar processor and distributor Imperial Sugar Company yesterday [Thursday] announced the appointment of Robert A. Peiser as president and Chief Executive Office. He was also elected a director of the company. Peiser, 53, assumes the roles of President and CEO from Robert J. McLaughlin, chairman of the board, who became president and CEO after James Kempner retired in October 2001. McLaughlin will continue to serve as chairman of the board.