1. Research Center, Asahi Glass Co., Ltd., 1150 Hazawa, Kanagawa-ku, Yokohama, 221-8755 Japan (K.Y., R.K.); Asahi Glass Urethane Co., Ltd., 25 Higashiwada, Kamisu-cho, Kashima-gun, Ibaragi, 314-0195 Japan (C.S., M.M.); and Yokogawa Electric Co., Ltd., 2-9-32 Nakamachi, Musashino-shi, Tokyo, 180-8750 Japan (Y.N.)