| 摘要 |
The present invention is an optically clear, high hardness, impact resistan t polyurethane which provides exceptionally high heat distortion temperatures and excellent chemical resistance. The invention is particularly useful for transparency applications that require excellent impact resistance coupled with high heat distortion temperatures, such as architectural glazings, vehicles glazings, riot shield s, aircraft canopies, face masks, visors, opthalmic and sun lenses, protective eyewear, and transparent armor.
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