发明名称 |
RECOVERY OF ADIPONITRILE FROM A MIXTURE OF ADIPONITRILE, AMINOCAPRONITRILE AND HEXAMETHYLENEDIAMINE |
摘要 |
Process for the recovery of substantially pure adiponitrile (ADN) from a mixture of adiponitrile, aminocapronitrile and hexamthylenediamine, comprising two sequential distillations, the first of which involves distilling the mixture in a distillation column at a head pressure that causes at least 70 % of the ADN to go into the distillate, along with bishexamethylenetriamine (BHMT) and 2-cyanocyclopentylideneimine (CPI), and the second of which involves distilling the distillate in a second distillation column at a head pressure that causes the formation of a distillate comprising a minimum temperature azeotrope between ADN and BHMT and a bottoms product that is ADN substantially free of both BHMT and CPI.
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申请公布号 |
KR20050029217(A) |
申请公布日期 |
2005.03.24 |
申请号 |
KR20057000810 |
申请日期 |
2005.01.17 |
申请人 |
INVISTA TECHNOLOGIES S.A.R.L. |
发明人 |
HASTINGS, JAMES, D.;OSTERMAIER, JOHN, J.;SCOTT, LEON, S. |
分类号 |
B01D3/14;C07C253/34;C07C255/04;C07C255/09;(IPC1-7):C07C253/34 |
主分类号 |
B01D3/14 |
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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