Photochromic materials that include 6-amino substituted indeno-fused naphthopyrans
作者： Huayun Yu , David B. Knowles , Anu Chopra
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摘要: The present invention relates to photochromic materials that include certain indeno-fused naphthopyrans. naphthopyrans have an amino group (e.g., a piperidino or morpholino group) bonded the 6-position and hydrogen halo fluoro) 11-position thereof. of can closed-form electromagnetic radiation absorption spectrum is shifted longer wavelengths greater than 390 nm), relative comparable materials. also optical elements, such as eyeglasses, invention. Formula (I).
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