发明授权
- 专利标题: Photochromic compound, composition and use thereof
- 专利标题(中): 光敏化合物,组合物及其用途
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申请号: US676285申请日: 1991-03-28
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公开(公告)号: US5246989A公开(公告)日: 1993-09-21
- 发明人: Kayo Iwamoto , Takashi Tanaka , Satoshi Imura , Seiji Okazaki , Shinsuke Tanaka
- 申请人: Kayo Iwamoto , Takashi Tanaka , Satoshi Imura , Seiji Okazaki , Shinsuke Tanaka
- 申请人地址: JPX Tokuyama
- 专利权人: Tokuyama Soda Kabishiki Kaisha
- 当前专利权人: Tokuyama Soda Kabishiki Kaisha
- 当前专利权人地址: JPX Tokuyama
- 优先权: JPX2-78637 19900329; JPX2-202516 19900801; JPX2-301183 19901108; JPX2-301184 19901108
- 主分类号: C07D498/10
- IPC分类号: C07D498/10 ; C07D498/20 ; C07D498/22 ; G03C1/685
摘要:
A photochromic compound of the present invention is a spiroxazine compound represented by the following formula: ##STR1## wherein R.sup.1 to R.sup.3 represent a monovalent organic group such as alkyl group, Y represents a fused heterocyclic aromatic hydrocarbon group or an unsaturated heterocyclic group if R.sup.1 and R.sup.2 are both methyl groups, and represents an aromatic hydrocarbon group or unsaturated heterocyclic group if R.sup.1 and R.sup.2 are other than the above mentioned. This compound shows an excellent photochromic characteristics even at high temperatures not less than ambient temperature.