发明名称 |
METHOD FOR PREPARING HYDRAZINE HYDRATE |
摘要 |
The invention concerns a method for preparing methyl ethyl ketone azine which consists in: (a) reacting ammonia, hydrogen peroxide and methyl ethyl ketone in the presence of a working solution to form an azine; (b) separating the working solution and the azine possibly containing methyl ethyl ketone which has not reacted and butanol-2; (c) recycling the working solution to step (a) after optional treatment; (d) separating the methyl ethyl ketone and the butanol-2 from the azine. The butanol-2 of the flow in step (d) is either purged or dehydrogenated in MEK and recycled at step (a). |
申请公布号 |
WO0012430(A1) |
申请公布日期 |
2000.03.09 |
申请号 |
WO1999FR01685 |
申请日期 |
1999.07.09 |
申请人 |
ELF ATOCHEM S.A.;SCHIRMANN, JEAN-PIERRE;BOURDAUDUCQ, PAUL |
发明人 |
SCHIRMANN, JEAN-PIERRE;BOURDAUDUCQ, PAUL |
分类号 |
C07C249/16;C01B21/16;C07C251/88 |
主分类号 |
C07C249/16 |
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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