发明名称 |
Low pressure process for manufacture of 3-dimethylaminopropylamine (DMAPA) |
摘要 |
An improved process for the production of 3-dimethylaminopropylamine in high (>99%) purity from N,N-dimethylaminopropionitrile utilizing a low pressure hydrogenation process is described. The basic process comprises contacting the nitrile with hydrogen at low pressure in the presence of a sponge nickel catalyst under conditions sufficient to effect the conversion of the nitrile to the primary amine product. The improvement in the process resides in a combination of carrying out the hydrogenation process at low pressures and temperatures in the presence of a catalytic amount of caustic base in order to give an improved selectivity of greater than 99.60% of DMAPN to DMAPA.
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申请公布号 |
US6660887(B1) |
申请公布日期 |
2003.12.09 |
申请号 |
US20020327765 |
申请日期 |
2002.12.23 |
申请人 |
SOLUTIA INC. |
发明人 |
WARD GREGORY J.;BLANCHARD BRYAN C. |
分类号 |
C07C209/48;(IPC1-7):C07C209/48 |
主分类号 |
C07C209/48 |
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