1. Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 233-8522, Japan
2. New Business Development Japan, DuPont Kabushiki Kaisha, DuPont Japan Technology Center, 19-2 Kiyohara Kogyo Danchi, Utsunomiya 321-3231, Japan; e-mail:
3. Glass Laminating Solutions & Vinyls, Kuraray America, Inc., Experimental Station, 200 Powder Mill Road, Wilmington, DE 19803 e-mail:
4. Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 233-8522, Japan e-mail: