发明名称 |
Method for the production of isophorondiamine (ipda, 3-aminomethyl-3,5,5-trimethyl- cyclohexylamine) having a high cis/tran-isomer ratio |
摘要 |
The invention relates to processes for preparing 3-aminomethyl-3,5,5-trimethylcyclo-hexylamine (isophoronediamine, IPDA) having a high cis/trans isomer ratio. IPDA having a cis/trans isomer ratio in the range from 63/37 to 66/34 can be obtained in any desired cis/trans isomer ratio, irrespective of temperature, by reacting IPDA with H<SUB>2 </SUB>and NH<SUB>3 </SUB>in the presence of a hydrogenation catalyst. IPDA having a cis/trans isomer ratio of at least 73/27 which is an important starting material for the synthesis of polyurethanes and polyamides can be obtained by combining this isomerization process with distillative processes.
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申请公布号 |
US2005245767(A1) |
申请公布日期 |
2005.11.03 |
申请号 |
US20050522994 |
申请日期 |
2005.02.02 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
FUNKE FRANK;HILL THOMAS;VON WATZDORF JOBST R.;MATTMANN WOLFGANG;HARDER WOLFGANG;HENKES ERHARD;LITTMAN GERD;JUKIUS MANFRED |
分类号 |
C07C209/54;C07B61/00;C07C29/68;C07C209/82;C07C209/84;C07C209/86;C07C211/36;(IPC1-7):C07C29/68 |
主分类号 |
C07C209/54 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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