发明授权
- 专利标题： Photochromatic and thermochromatic spiro-oxazepin-oxazine compounds and the process for their preparation
- 专利标题（中）： 光敏和热敏螺旋氧化烯 - 氧化合物及其制备方法
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申请号： US622710申请日： 1990-12-06
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公开(公告)号： US5055576A公开(公告)日： 1991-10-08
- 发明人: Graziano Castaldi , Pietro Allegrini
- 申请人： Graziano Castaldi , Pietro Allegrini
- 申请人地址： ITX Palermo
- 专利权人： Enichem Synthesis, S.p.A.
- 当前专利权人： Enichem Synthesis, S.p.A.
- 当前专利权人地址： ITX Palermo
- 优先权： ITX22659A/89 19891212
- 主分类号： C07D267/20
- IPC分类号： C07D267/20 ; C07D498/10 ; C09K9/02 ; G11B7/244
摘要：
New photochromatic and thermochromatic compounds of the spiro-oxazepin-oxazine class are definable by the general formula (I): ##STR1## where the substituents R and R.sub.1 -R.sub.12 are as defined in the description.The process for the preparation of the compounds (I) is described, as is their use as photochromatic and thermochromatic agents.
公开/授权文献
- US5803271A Centrifugal force separator 公开/授权日：1998-09-08
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