申请人:Optische Werke G. Rodenstock
公开号:US20040092743A1
公开(公告)日:2004-05-13
The present invention relates to specific photochromic heterocyclically annellated indenochromene derivatives and the use thereof in plastics of all types, particularly for ophthalmic applications. In particular, the present invention relates to indeno[2,1-f] chromene derivatives having the following general formula (I) and indeno[1,2-h] chromene derivatives having the following general formula (II):
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