发明申请
US20060270878A1 Process for the preparation of dimethylketene and then of polydimethylketene fro isobutyric anhydride 失效
制备二甲基烯酮,然后由异丁酸酐制备聚二甲基乙烯酮的方法

  • 专利标题: Process for the preparation of dimethylketene and then of polydimethylketene fro isobutyric anhydride
  • 专利标题(中): 制备二甲基烯酮,然后由异丁酸酐制备聚二甲基乙烯酮的方法
  • 申请号: US10545977
    申请日: 2004-02-20
  • 公开(公告)号: US20060270878A1
    公开(公告)日: 2006-11-30
  • 发明人: Serge Hub
  • 申请人: Serge Hub
  • 优先权: FR03/02219 20030221
  • 国际申请: PCT/FR04/00399 WO 20040220
  • 主分类号: C07C45/87
  • IPC分类号: C07C45/87
Process for the preparation of dimethylketene and then of polydimethylketene fro isobutyric anhydride
摘要:
The present invention relates to a process for the preparation of dimethylketene (DMK) and then of polydimethylketene (PDMK) by polymerization of DMK. More specifically, the DMK is obtained by pyrolysis by isobutyric anhydride (IBAN), the latter decomposing under the effect of heat (pyrolysis) to give isobutyric acid (IBA) and DMK. One mole of pyrolyzed IBAN gives one mole of IBA and one mole of DMK.
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