发明授权
US4614803A Process for the preparation of dry alkali metal salts of
1,8-naphthalimide
失效
制备1,8-萘二甲酰亚胺的干碱金属盐的方法
- 专利标题: Process for the preparation of dry alkali metal salts of 1,8-naphthalimide
- 专利标题(中): 制备1,8-萘二甲酰亚胺的干碱金属盐的方法
-
申请号: US738577申请日: 1985-05-28
-
公开(公告)号: US4614803A公开(公告)日: 1986-09-30
- 发明人: Ernst Spietschka , Manfred Urban
- 申请人: Ernst Spietschka , Manfred Urban
- 申请人地址: DEX
- 专利权人: Hoechst Aktiengesellschaft
- 当前专利权人: Hoechst Aktiengesellschaft
- 当前专利权人地址: DEX
- 优先权: DEX3420161 19840530
- 主分类号: C07D221/14
- IPC分类号: C07D221/14 ; C07D221/04
摘要:
Process for the preparation of dry alkali metal salts of 1,8-naphthalimide, which comprises allowing concentrated alkali metal hydroxide solutions to run into solid 1,8-naphthalimide in a molar ratio, at a rate corresponding to the degree of reaction, with vigorous stirring in vacuo at an elevated internal temperature, and then carrying out drying without intermediate isolation of the alkali metal salt formed.
公开/授权文献
- US5704251A Motor vehicle gearbox with internal shift system 公开/授权日:1998-01-06
信息查询