公开(公告)号：EP3013793A1

公开(公告)日：2016-05-04

申请号：EP14742059.0

申请日：2014-06-25

Applicant: Invista Technologies S.à.r.l.

Inventor： KANTAK, Milind V.

IPC: C07C253/34 ,  C07C255/04

CPC classification number: C07C253/34 ,  C07C255/04

Abstract: The present invention provides an improved process for preferentially concentrating 2-methylglutaronitrile from mixtures comprising 2-methyl-glutaronitrile and other C6 nitriles having very close relative volatilities, for example, 2-ethylsuccinonitrile and adiponitrile, in a particular integrated, continuous distillative refining process, advantageously utilizing a carefully staged distillation apparatus train and by operating in an optimized window for effective separation.

Abstract translation: 本发明提供了一种改进的方法，其优选地将2-甲基戊二腈从包含2-甲基 - 戊二腈和具有非常接近的相对挥发性的其它C 6腈（例如2-乙基琥珀腈和己二腈）的混合物中浓缩在特定的一体化连续蒸馏精制方法中， 有利地利用仔细分级的蒸馏装置列车并通过在优化的窗口中操作以进行有效的分离。