发明授权
- 专利标题: Inhibitors of color formation in alkanolamines
- 专利标题(中): 烷醇胺中颜色形成抑制剂
-
申请号: US635247申请日: 1996-04-12
-
公开(公告)号: US5693866A公开(公告)日: 1997-12-02
- 发明人: Paul V. Roling , Quincy K. A. Sintim , J. Frederick Martin
- 申请人: Paul V. Roling , Quincy K. A. Sintim , J. Frederick Martin
- 申请人地址: PA Trevose
- 专利权人: BetzDearborn Inc.
- 当前专利权人: BetzDearborn Inc.
- 当前专利权人地址: PA Trevose
- 主分类号: C07C213/10
- IPC分类号: C07C213/10 ; C07C215/08 ; C07C209/90
摘要:
In the thermal processing of crude alkanolamines, a method of inhibiting color formation in the alkanolamines comprising adding an amount, effective for the purpose, of an alkali metal hydroxide or sulfite, or mixtures thereof.
公开/授权文献
- US5156130A Fuel injection system 公开/授权日:1992-10-20
信息查询