发明名称 |
PROCESS FOR MANUFACTURING TRIETHANOLAMINE AND PRODUCT OBTAINED |
摘要 |
The present invention relates to a continuous process for the manufacture of triethanolamine (TEA) comprising, in succession: (i) a step of synthesizing the TEA by continuously bringing ammonia into contact with ethylene oxide under conditions allowing the formation of a reaction mixture comprising mono-, di- and triethanolamines, (ii) a step of continuously separating the ammonia that has not reacted from the reaction mixture and (iii) a step of continuously separating the TEA from the mixture resulting from step (ii). The process is characterized in that a specific mixture of alkanolamines, comprising TEA and from 0,5 to 50 % by weight of at least one secondary dialkanolamine, is prepared or isolated from the mixture resulting from step (ii), and in that the TEA is separated and isolated with a degree of purity equal to or greater than 99.2 % by weight, by a continuous distillation of the specific mixture of alkanolamines. The present invention also relates to a colourless TEA having a high purity, that can be obtained by the process according to the invention and especially has a high resistance to coloration.
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申请公布号 |
WO0153250(A1) |
申请公布日期 |
2001.07.26 |
申请号 |
WO2001GB00216 |
申请日期 |
2001.01.19 |
申请人 |
BP CHEMICALS LIMITED;BP CHEMICALS SNC;BRUN-BUISSON, DANIEL;VILLEGIER, PHILIPPE |
发明人 |
BRUN-BUISSON, DANIEL;VILLEGIER, PHILIPPE |
分类号 |
C07C213/04;C07C213/10;C07C215/12;(IPC1-7):C07C213/10 |
主分类号 |
C07C213/04 |
代理机构 |
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