Invention Grant
US08388872B2 Photochromic materials having extended pi-conjugated systems and compositions and articles including the same
有权
具有延伸的π-共轭体系的光致变色材料和包含其的组合物和制品
- Patent Title: Photochromic materials having extended pi-conjugated systems and compositions and articles including the same
- Patent Title (中): 具有延伸的π-共轭体系的光致变色材料和包含其的组合物和制品
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Application No.: US13400734Application Date: 2012-02-21
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Publication No.: US08388872B2Publication Date: 2013-03-05
- Inventor: Anu Chopra , Jun Deng , Beon-Kyu Kim , David B. Knowles , Frank F. Molock, Jr. , Victor A. Montes , Stephen D. Straight , Wenjing Xiao , Huayun Yu
- Applicant: Anu Chopra , Jun Deng , Beon-Kyu Kim , David B. Knowles , Frank F. Molock, Jr. , Victor A. Montes , Stephen D. Straight , Wenjing Xiao , Huayun Yu
- Applicant Address: US FL Pinellas Park
- Assignee: Transitions Optical, Inc.
- Current Assignee: Transitions Optical, Inc.
- Current Assignee Address: US FL Pinellas Park
- Agent Deborah M Altman; Frank P. Mallak
- Main IPC: G02B5/23
- IPC: G02B5/23 ; C07D311/78 ; C07D311/94
Abstract:
The present invention provides a photochromic material which is an indeno-fused naphthopyran of structural formulas I or II, having a pi-conjugation extending group bonded to the 11-position of the indeno-fused naphthopyran, the pi-conjugation extending group having at least one pendent halo-substituted group bonded thereto. The pi-conjugation extending group extends the pi-conjugation system of said indeno-fused naphthopyran. The 13-position of the indeno-fused naphthopyran is substantially free of spiro-substituents. The invention further provides photochromic materials of specified structure, photochromic compositions, photochromic articles and optical elements that include the photochromic material.
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