发明授权
US06774264B2 Catalyst to improve the color stability of N,N-dialkylalkanolamines
失效
提高N，N-二烷基链烷醇胺颜色稳定性的催化剂
- 专利标题： Catalyst to improve the color stability of N,N-dialkylalkanolamines
- 专利标题（中）： 提高N，N-二烷基链烷醇胺颜色稳定性的催化剂
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申请号： US10313560申请日： 2002-12-06
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公开(公告)号： US06774264B2公开(公告)日： 2004-08-10
- 发明人: Nathalie Cecile Delanghe , Gamini Ananda Vedage , Frederick Carl Wilhelm
- 申请人： Nathalie Cecile Delanghe , Gamini Ananda Vedage , Frederick Carl Wilhelm
- 主分类号： C07C20984
- IPC分类号： C07C20984
摘要：
This invention relates to an improvement in a process for effecting decolorization of an alkanolamine by subjecting the alkanolamine to hydrogenation in the presence of a hydrogenation catalyst. The improvement for removing color, by-products, or both from a dialkylalkanolamine represented by the formula: wherein R and R1 are methyl, ethyl, or a mixture thereof, which comprises: utilizing a catalyst comprised of palladium carried on gamma alumina as the hydrogenation catalyst.
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