PHOTOCHROMIC POLYURETHANE COATING AND ARTICLES HAVING SUCH A COATING
摘要
<p>Described are photochromic polyurethane coatings that meet commercially acceptable "cosmetic" standards for optical coatings. Also described are articles having such coatings. The coatings exhibit a Fischer microhardness of from 50 to 150 Newtons per mm2 and improved photochromic properties, i.e., the formation of darker activated colors and faster rates of photochromic activation and fade when irradiated with ultraviolet light.</p>
申请公布号
EP0963390(A1)
申请公布日期
1999.12.15
申请号
EP19980908513
申请日期
1998.02.10
申请人
PPG INDUSTRIES OHIO, INC.
发明人
BOWLES, ROBERT, J., III;GRUCHACZ, NANCYANNE;SWARUP, SHANTI;CONKLIN, JEANINE;HUNT, ROBIN
