| 发明名称 |
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 mm 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 |
WO9837115(A1) |
申请公布日期 |
1998.08.27 |
| 申请号 |
WO1998US02558 |
申请日期 |
1998.02.10 |
| 申请人 |
PPG INDUSTRIES, INC. |
发明人 |
BOWLES, ROBERT, J., III;GRUCHACZ, NANCYANNE;SWARUP, SHANTI;CONKLIN, JEANINE;HUNT, ROBIN |
| 分类号 |
G02C7/10;C08G18/28;C08G18/40;C08G18/62;C09K9/02;G02B1/10;G02B5/23;G03C1/685;(IPC1-7):C08G18/40;G03C1/73 |
主分类号 |
G02C7/10 |
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