公开(公告)号：WO2004063176A1

公开(公告)日：2004-07-29

申请号：PCT/US2004/000045

申请日：2004-01-05

Applicant: THE STANDARD OIL COMPANY

Inventor： CESA, Mark, C. ,  MOORE, Eric, J. ,  BRUCE, Mark, R. ,  GODBOLE, Sanjay, P. ,  HAGANS, Michael, K. ,  BENDER, David, R.

IPC: C07D263/32

CPC classification number: C07D263/32

Abstract: A process for the recovery of oxazole comprising contacting a mixture comprising oxazole and acetonitrile with an acid to form an acid salt of oxazole; separating acid salt of the oxazole from the mixture; and neutralizing the acid salt of oxazole separated from the mixture to release oxazole.

Abstract translation: 回收恶唑的方法，包括使含有恶唑和乙腈的混合物与酸接触以形成恶唑酸盐; 从混合物中分离恶唑的酸盐; 并中和混合物中分离的恶唑酸盐以释放恶唑。

公开(公告)号：WO2004063145A1

公开(公告)日：2004-07-29

申请号：PCT/US2003/038691

申请日：2003-12-05

Applicant: THE STANDARD OIL COMPANY

Inventor： GODBOLE, Sanjay, P. ,  CESA, Mark, C.

IPC: C07C253/26

CPC classification number: C07C253/26 ,  C07C253/34 ,  C07C255/08

Abstract: A process for the recovery of acrylonitrile or methacrylonitrile from an aqueous solution comprising subjecting the said solution to a water extractive distillation by feeding the solution to a distillation column and performing said extractive distillation and using solvent water introduced at the top of said column, removing a first overhead vapor stream of acrylonitrile or methacrylonitrile with some water from the top of the column, and a first liquid stream containing water and impurities from the bottom of the column, the contents of said column maintained at a substantially neutral pH by adding a sufficient amount of at least one alkaline compound selected from ammonium carbonate, ammonium bicarbonate, ammonium carbamate, and aikylene diamines to the overhead decanter and/or to the solvent water.

Abstract translation: 一种从水溶液中回收丙烯腈或甲基丙烯腈的方法，包括通过将溶液加入蒸馏塔进行萃取蒸馏，并进行萃取蒸馏，并使用引入塔的顶部的溶剂水，除去 丙烯腈或甲基丙烯腈与来自塔顶部的一些水的第一塔顶蒸气流和从塔底部含有水和杂质的第一液流，所述塔的内容物通过加入足量的量保持在基本上中性的pH 的至少一种选自碳酸铵，碳酸氢铵，氨基甲酸铵和亚丁基二胺的碱性化合物加入到塔顶馏分器和/或溶剂水中。

公开(公告)号：EP1592676A1

公开(公告)日：2005-11-09

申请号：EP04700190.4

申请日：2004-01-05

Applicant: THE STANDARD OIL COMPANY

Inventor： CESA, Mark, C. ,  MOORE, Eric, J. ,  BRUCE, Mark, R. ,  GODBOLE, Sanjay, P. ,  HAGANS, Michael, K. ,  BENDER, David, R.

IPC: C07D263/32

CPC classification number: C07D263/32

Abstract: A process for the recovery of oxazole comprising contacting a mixture comprising oxazole and acetonitrile with an acid to form an acid salt of oxazole; separating acid salt of the oxazole from the mixture; and neutralizing the acid salt of oxazole separated from the mixture to release oxazole.

Abstract translation: 一种回收恶唑的方法，包括使含有恶唑和乙腈的混合物与酸接触以形成恶唑的酸式盐; 从混合物中分离恶唑的酸盐; 并中和从混合物中分离出的恶唑酸盐以释放恶唑。

公开(公告)号：EP1590320A1

公开(公告)日：2005-11-02

申请号：EP03796689.2

申请日：2003-12-05

Applicant: THE STANDARD OIL COMPANY

Inventor： GODBOLE, Sanjay, P. ,  CESA, Mark, C.

IPC: C07C253/26 ,  C07C253/34 ,  C07C255/08

CPC classification number: C07C253/26 ,  C07C253/34 ,  C07C255/08

Abstract: A process for the recovery of acrylonitrile or methacrylonitrile from an aqueous solution comprising subjecting the said solution to a water extractive distillation by feeding the solution to a distillation column and performing said extractive distillation and using solvent water introduced at the top of said column, removing a first overhead vapor stream of acrylonitrile or methacrylonitrile with some water from the top of the column, and a first liquid stream containing water and impurities from the bottom of the column, the contents of said column maintained at a substantially neutral pH by adding a sufficient amount of at least one alkaline compound selected from ammonium carbonate, ammonium bicarbonate, ammonium carbamate, and aikylene diamines to the overhead decanter and/or to the solvent water.