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    Separation of 6-aminocapronitrile and hexamethylenediamine from a mixture comprising hexamethylenediamine, 6-aminocapronitrile and tetrahydroazepinne
    196.
    发明公开
    Separation of 6-aminocapronitrile and hexamethylenediamine from a mixture comprising hexamethylenediamine, 6-aminocapronitrile and tetrahydroazepinne 有权
    从己二胺，6-氨基己腈和tetrahydroazepine的混合物6-氨基己腈和六亚甲基二胺的分离

    公开(公告)号：EP2581364A1

    公开(公告)日：2013-04-17

    申请号：EP12195063.8

    申请日：2005-09-09

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

    Inventor： Ostermaier, John, J.

    IPC: C07C209/48 ,  C07C253/34 ,  C07C209/86 ,  C07C211/12 ,  C07C255/24

    CPC classification number: C07C209/86 ,  C07C253/34 ,  C07C211/12 ,  C07C255/24

    Abstract: The invention relates to the field of separation by distillation of 6-aminocapronitrile (ACN) and hexamethylenediamine (HMD) from a mixture comprising ACN, HMD, tetrahydroazepine (THA), adiponitrile (ADN) and low boilers (LB). Also disclosed is a method for producing a distillate stream comprising HMD; a side draw stream comprising ACN, THA and low levels of dimers of ACN and HMD; and a tails stream comprising ACN, THA and substantially higher levels of dimers of ACN and HMD than found in the side draw stream. The side draw stream is particularly suitable for use in the production of caprolactam since the low levels of dimers of ACN and HMT do not greatly affect the catalyst life in the caprolactam production process. The tails stream can be further distilled to produce a tails distillate stream comprising CAN and THA, which can be recycled back to the first distillation column, futher increasing recovery of CAN from the feed stream. Process conditions of the method of the invention disfavor the production of 2-cyanocyclopentylideneimine (CPI).

    Abstract translation: 本发明从包含ACN，HMD，tetrahydroazepine（THA），己二腈（ADN）和低沸（LB）的混合物中涉及分离领域通过6-氨基己腈的蒸馏（ACN）和六亚甲基二胺（HMD）。 所以圆盘游离缺失是用于生产馏出物物流，其包括HMD的方法; 一个侧取物流包含ACN，THA和ACN和HMD的二聚体的低的水平; 和尾流包括ACN，THA和比侧馏分流中找到基本上更高水平的ACN和HMD的二聚体。 侧馏分流是特别适合于在生产己内酰胺的使用自ACN和HMT的二聚体的低级别不显着影响催化剂的寿命在己内酰胺的生产过程。 的尾流可以是蒸馏水，以产生进一步的尾馏出物流包含CAN和THA，其可以被再循环回到第一蒸馏塔，futher从进料流增加CAN的恢复。 本发明的方法的过程条件不利于生产2- cyanocyclopentylideneimine（CPI）的。

    PROCESS FOR MAKING NITRILES
    197.
    发明公开
    PROCESS FOR MAKING NITRILES 有权
    制造硝酸盐的方法

    公开(公告)号：EP2574191A1

    公开(公告)日：2013-04-03

    申请号：EP11729810.9

    申请日：2011-06-16

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

    Inventor： MOERBE, Larry, E. ,  CHAO, Tseng, H.

    IPC: C07C253/10 ,  C07C255/04

    CPC classification number: C07C253/10 ,  Y02P20/584 ,  C07C255/04

    Abstract: Adiponitrile is made by reacting 3-pentenenitrile with hydrogen cyanide. The 3- pentenenitrile is made by reacting 1,3-butadiene with hydrogen cyanide. The 1,3- butadiene feed includes a small amount of tertiary-butylcatechol. The catalyst for the reaction of 1,3-butadiene with hydrogen cyanide to make 3-pentenenitrile is recycled. At least a portion of the recycled catalyst is purified by an extraction process.

    Abstract translation: 己二腈是由3-戊烯腈与氰化氢反应制得的。 3-戊烯腈通过1,3-丁二烯与氰化氢反应制得。 1,3-丁二烯进料包含少量的叔丁基儿茶酚。 1,3-丁二烯与氰化氢反应生成3-戊烯腈的催化剂被循环使用。 至少一部分回收的催化剂通过萃取过程进行纯化。

    PROCESS FOR MAKING NITRILES
    198.
    发明公开
    PROCESS FOR MAKING NITRILES 有权
    制造硝酸盐的方法

    公开(公告)号：EP2574189A1

    公开(公告)日：2013-04-03

    申请号：EP11728474.5

    申请日：2011-06-16

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

    Inventor： MOERBE, Larry, E. ,  CHAO, Tseng, H.

    IPC: C07C253/10 ,  C07C255/04

    CPC classification number: C07C253/10 ,  Y02P20/584 ,  C07C255/04

    Abstract: Adiponitrile is made by reacting 3-pentenenitrile with hydrogen cyanide. The 3- pentenenitrile is made by reacting 1,3-butadiene with hydrogen cyanide. The catalyst for the reaction of 1,3-butadiene with hydrogen cyanide to make 3-pentenenitrile is recycled. At least a portion of the recycled catalyst is purified by an extraction process, which separates catalyst degradation products and reaction byproduct from the catalyst.

    Abstract translation: 己二腈是由3-戊烯腈与氰化氢反应制得的。 3-戊烯腈通过1,3-丁二烯与氰化氢反应制得。 1,3-丁二烯与氰化氢反应生成3-戊烯腈的催化剂被循环使用。 至少一部分回收的催化剂通过萃取过程来纯化，该萃取过程将催化剂降解产物和反应副产物从催化剂中分离出来。

    PRODUCTION OF AROMATIC CARBOXYLIC ACIDS
    199.
    发明公开
    PRODUCTION OF AROMATIC CARBOXYLIC ACIDS 审中-公开
    芳香族羧酸的生产

    公开(公告)号：EP2571842A2

    公开(公告)日：2013-03-27

    申请号：EP11783943.1

    申请日：2011-05-04

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

    Inventor： URE, Alan, Macpherson

    IPC: C07C51/43 ,  C07C51/265 ,  C07C51/44 ,  C07C63/04 ,  C07C63/15

    CPC classification number: C07C51/265 ,  C07C51/44 ,  C07C51/47 ,  Y02P20/131 ,  C07C63/26

    Abstract: Disclosed are processes and systems for the production of aromatic carboxylic acids, such as purified terephthalic acid. The processes result in reduced volatile aromatic monocarboxylic acid contamination throughout various stages of the PTA process when compared to known processes. This permits the various effluent streams to be recycled back to several stages in the production process, which allows for the efficient production of pure PTA at a lower cost.

    Abstract translation: 公开了生产芳族羧酸如纯化对苯二甲酸的方法和系统。 与已知方法相比，该方法在PTA方法的各个阶段导致挥发性芳香族一元羧酸污染降低。 这使得各种流出物流可以循环回到生产过程中的几个阶段，这允许以较低成本有效地生产纯PTA。

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