发明名称 |
Process for the preparation of N-methyl-2-pyrrolidinone (NMP) |
摘要 |
N-Methyl-2-pyrrolidone (NMP) is prepared by preparing a mixture comprising monomethylamine, dimethylamine and trimethylamine and ammonia in a first process step by reacting ammonia with methanol at elevated temperature in the presence of a catalyst, separating 10 off the ammonia, reacting the mixture comprising the methylamines with gamma-butyrolactone (gamma-BL), in a molar ratio of monomethylamine to gamma-BL of at least 1 in a second process step at elevated temperature and superatmospheric pressure, separating NMP and unreacted methylamines from the reaction product and returning unreacted methylamines to the first process step for reaction with methanol and ammonia. |
申请公布号 |
EP1125923(A3) |
申请公布日期 |
2002.08.07 |
申请号 |
EP20010101420 |
申请日期 |
2001.01.23 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
OHLBACH, FRANK, DR.;MELDER, JOHANN-PETER, DR.;ROSS, KARL-HEINZ, DR.;RUDLOFF, MARTIN;LIEBE, JOERG, DR. |
分类号 |
C07B61/00;C07D207/26;C07D207/267 |
主分类号 |
C07B61/00 |
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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