Title:
電子求引性置換基を含むフォトクロミック材料
Document Type and Number:
Japanese Patent JP2009521542
Kind Code:
A
Abstract:
Photochromic materials comprising indeno-fused naphthopyrans having a first electron-withdrawing substituent and, in certain non-limiting embodiments, a second electron-withdrawing substituent are disclosed. The photochromic materials according to the various embodiments may display faster fade rates, bathochromic shift, and higher performance ratings compared to comparable indeno-fused naphthopyrans without the electron-withdrawing substituents. Photochromic compositions and articles, such as optical elements, incorporating the photochromic materials are also disclosed.
Inventors:
Chopra, Anu
Kim, pon-kyu
Van, gemato barry
Kim, pon-kyu
Van, gemato barry
Application Number:
JP2008547261A
Publication Date:
June 04, 2009
Filing Date:
December 05, 2006
Export Citation:
Assignee:
Transitions Optical, Incorporated
International Classes:
C09K9/02; C07D311/78; G03C1/685
Domestic Patent References:
| JP2009526092A | 2009-07-16 | |||
| JP2008537762A | 2008-09-25 | |||
| JP2008535971A | 2008-09-04 | |||
| JP2003513017A | 2003-04-08 | |||
| JPH10508031A | 1998-08-04 | |||
| JP2009526092A | 2009-07-16 | |||
| JP2008537762A | 2008-09-25 | |||
| JP2008535971A | 2008-09-04 | |||
| JP2003513017A | 2003-04-08 | |||
| JPH10508031A | 1998-08-04 |
Foreign References:
| US20040191520A1 | 2004-09-30 | |||
| US20040191520A1 | 2004-09-30 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita