会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 83. 发明授权
    • Separation of 6-aminocapronitrile and hexamethylenediamine from a mixture comprising hexamethylenediamine, 6-aminocapronitrile and tetrahydroazepine
    • 从包含六亚甲基二胺,6-氨基己腈和四氢氮杂的混合物中分离6-氨基己腈和六亚甲基二胺
    • US07208632B2
    • 2007-04-24
    • US10939144
    • 2004-09-10
    • John Joseph Ostermaier
    • John Joseph Ostermaier
    • C07C209/86
    • C07C209/86C07C253/34C07C211/12C07C255/24
    • 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 HMD 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 ACN and THA, which can be recycled back to the first distillation column, further increasing recovery of ACN from the feed stream. Process conditions of the method of the invention disfavor the production of 2-cyanocyclopentylideneimine (CPI).
    • 本发明涉及从包含ACN,HMD,四氮氮平(THA),己二腈(ADN)和低锅炉(LB))的混合物中蒸馏出6-氨基己腈(ACN)和六亚甲基二胺(HMD)的分离领域。 还公开了一种生产包含HMD的馏出液流的方法; 包含ACN,THA和ACN和HMD的低水平二聚体的侧引流; 以及包含ACN,THA和比侧馏分流中发现的ACN和HMD的显着更高水平的二聚体的尾料流。 由于ACN和HMD的低水平二聚体不会极大地影响己内酰胺生产过程中的催化剂寿命,所以侧引流特别适用于生产己内酰胺。 可以进一步蒸馏尾巴料流以产生包含ACN和THA的尾馏馏料流,其可再循环回第一蒸馏塔,进一步增加ACN从进料流中的回收。 本发明方法的工艺条件不利于2-氰基环戊烯亚胺(CPI)的生产。
    • 87. 发明申请
    • Method for reducing the content of an unsaturated amine in a mixture containing an amino nitrile, a diamine, a dinitrile or mixtures thereof
    • 降低含氨基腈,二胺,二腈或其混合物的混合物中不饱和胺含量的方法
    • US20050222449A1
    • 2005-10-06
    • US10515281
    • 2003-05-21
    • Stefan MaixnerChristoph BenischHermann LuykenPeter BasslerRolf-Hartmuth FischerJohann-Peter MelderAndreas Ansmann
    • Stefan MaixnerChristoph BenischHermann LuykenPeter BasslerRolf-Hartmuth FischerJohann-Peter MelderAndreas Ansmann
    • C07C209/84C07C211/09C07C211/12C07C253/34C07C255/09C07C255/24
    • C07C253/34C07C255/24
    • A process for reducing the level of an aliphatic monounsaturated amine (IV) in a mixture (V) containing an aminonitrile (I) or a diamine (II) or a dinitrile (III) or mixtures thereof as well as said amine (IV) by a) reacting said mixture (V) with an anionic nucleophile (VI) which contains a nucleophilic atom selected from the group consisting of oxygen, nitrogen and sulfur, which is capable of taking up an H+ ion to form an acid having a pKa value in the range from 7 to 11, as measured in water at 25° C., and which has a relative nucleophilicity, as measured in methyl perchlorate/methanol at 25° C., in the range from 3.4 to 4.7 when said nucleophilic atom is oxygen, in the range from 4.5 to 5.8 when said nucleophilic atom is nitrogen, and in the range from 5.5 to 6.8 when said nucleophilic atom is sulfur, in an amount in the range from 0.01 to 10 mol per mole of said amine (IV) in said mixture (V) at a temperature in the range from 50 to 200° C. to obtain a mixture (VII), b) distilling said aminonitrile (I) or said diamine (II) or said dinitrile (III) or mixtures thereof from said mixture (VII) at a temperature in the range from 50 to 200° C. and at a pressure in the range from 0.1 to 100 kPa to obtain a bottom product (VIII), which comprises c) distilling an aminonitrile (I) or diamine (II) or dinitrile (III) or mixtures thereof from said bottom product (VIII) at a temperature which is lower than that chosen in step b).
    • 含有氨基腈(I)或二胺(II)或二腈(III)或其混合物以及所述胺(IV)的混合物(V)中的脂肪族单不饱和胺(IV)的水平以及所述胺(IV) a)使所述混合物(V)与含有选自氧,氮和硫的亲核原子的阴离子亲核试剂(VI)反应,其能够吸收H + 形成在25℃下在水中测量的具有7至11的pK值的酸,其在25℃下在高氯酸甲酯/甲醇中测得的具有相对亲核性 当所述亲核原子为氧时,在3.4至4.7的范围内,当所述亲核原子为氮时,在4.5至5.8的范围内,当所述亲核原子为硫时在5.5至6.8的范围内,其量为 在所述混合物(V)中,在50至200℃的温度范围内每摩尔所述胺(IV)为0.01至10摩尔的范围,以获得混合物 (VII)中,b)在50至200℃的温度下,从所述混合物(VII)中蒸馏所述氨基腈(I)或所述二胺(II)或所述二腈(III)或其混合物, 压力为0.1至100kPa,以获得底部产物(VIII),其包括c)在所述底部产物(VIII)中蒸馏氨基腈(I)或二胺(II)或二腈(III)或其混合物, 温度低于步骤b)中选择的温度。