发明授权
- 专利标题: 3-(9-Julolidinyl)-3-(diphenylamino)phthalides
- 专利标题(中): 3-(9-奎宁环)-3-(二苯基氨基)苯并二氮杂环己烷
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申请号: US821927申请日: 1977-08-04
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公开(公告)号: US4168378A公开(公告)日: 1979-09-18
- 发明人: Paul J. Schmidt , William M. Hung
- 申请人: Paul J. Schmidt , William M. Hung
- 申请人地址: NY New York
- 专利权人: Sterling Drug Inc.
- 当前专利权人: Sterling Drug Inc.
- 当前专利权人地址: NY New York
- 主分类号: B41M5/145
- IPC分类号: B41M5/145 ; B41M5/327 ; C07D307/90 ; C07D215/38
摘要:
3-[4-Disubstituted-amino)phenyl] or (9-julolidinyl)-3-(diphenylamino)phthalides useful as color formers in pressure-sensitive and thermal marking systems are prepared by reaction of 2-[4-disubstituted-amino)benzoyl] or (9-julolidinyl-carbonyl)benzoic acids with diphenylamines.
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