发明授权
US5210260A Process for obtaining bis(2,4-di-tert-butylphenyl) halophosphites
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获得二氯甲烷(2,4-二叔丁基苯基)甲醛的方法
- 专利标题: Process for obtaining bis(2,4-di-tert-butylphenyl) halophosphites
- 专利标题(中): 获得二氯甲烷(2,4-二叔丁基苯基)甲醛的方法
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申请号: US856073申请日: 1992-07-06
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公开(公告)号: US5210260A公开(公告)日: 1993-05-11
- 发明人: Manfred Bohshar , Hans-Jerg Kleiner
- 申请人: Manfred Bohshar , Hans-Jerg Kleiner
- 申请人地址: DEX Frankfurt am Main
- 专利权人: Hoechst AG
- 当前专利权人: Hoechst AG
- 当前专利权人地址: DEX Frankfurt am Main
- 优先权: DEX3937610 19891111
- 主分类号: C07F9/146
- IPC分类号: C07F9/146
摘要:
The invention relates to a process for obtaining phosphorus acid-bis(2,4-di-tert-butylphenyl) ester halides in which a phosphorus acid-2,4-di-tert-butylphenyl ester dihalide is heated in the presence of a catalyst containing nitrogen or phosphorus, or both, to 130.degree. C. to 280.degree. C. and the phosphorus trihalide produced by disproportionation is removed from the reaction mixture.
公开/授权文献
- US5842471A Purification of polyphosphazene polyacids 公开/授权日:1998-12-01