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    Acetonitrile purification process for ultrahigh performance liquid chromatography-mass spectrometer
    1.
    发明授权
    Acetonitrile purification process for ultrahigh performance liquid chromatography-mass spectrometer 有权

    公开(公告)号：US11945766B2

    公开(公告)日：2024-04-02

    申请号：US17314079

    申请日：2020-05-07

    申请人： FTSCI (HUBEI) BIOTECH CO., LTD.

    发明人： Sheng Wen ,  ZhengChong Zhao ,  ChunLi Gong ,  Fan Cheng ,  Hai Liu ,  FuQiang Hu

    IPC分类号： C07C253/34 ,  C07C255/07

    CPC分类号： C07C253/34 ,  C07C255/07

    摘要： The present invention relates to the technical field of acetonitrile refining, and in particular, to an improved acetonitrile purification process for an ultrahigh performance liquid chromatography-mass spectrometer. The present invention provides an acetonitrile purification process. A high-purity finished product may be obtained by performing operations of oxidation, rectification adsorption, drying, reflux rectification and filtration on industrial acetonitrile and controlling related parameters such as temperature, flow and the like, continuous production is ensured, a light transmittance of the finished product in ultraviolet rays of 200 to 260 nm is greater than or equal to 95%, water and impurities in the industrial acetonitrile are removed, and the requirements of the ultrahigh performance liquid chromatography-mass spectrometer are met; moreover, by controlling process parameters and equipment.

    Perfume compositions containing isomeric alkadienenitriles
    5.
    发明授权
    Perfume compositions containing isomeric alkadienenitriles 有权

    公开(公告)号：US09758475B2

    公开(公告)日：2017-09-12

    申请号：US14830313

    申请日：2015-08-19

    申请人： BEDOUKIAN RESEARCH, INC.

    发明人： Robert H. Bedoukian ,  Krzysztof Swierczek ,  Douglas Jay Pesak ,  Hifzur R. Ansari

    IPC分类号： C11B9/00 ,  C07C253/30 ,  C07C255/07

    CPC分类号： C07C253/30 ,  C07B2200/09 ,  C07C255/07 ,  C11B9/0023

    摘要： A perfume composition comprising an effective amount of at least one alkadienenitrile selected from 4,8-undecadienenitrile and isomers thereof, 4,9-dodecadienenitrile and isomers thereof, and 4,10-tridecadienenitrile and isomers thereof. The isomers of 4,8-undecadienenitrile comprise Z,Z-4,8-undecadienenitrile, E,E-4,8-undecadienenitrile, and mixed Z/E isomers of 4,8-undecadienenitrile; the isomers of 4,9-dodecadienenitrile comprise Z,Z-4,9-dodecadienenitrile, E,E-4,9-dodecadienenitrile, and mixed Z/E isomers of 4,9-dodecadienenitrile; and the isomers of 4,10-tridecadienenitrile comprise Z,Z-4,10-tridecadienenitrile, E,E-4,10-tridecadienenitrile, and mixed Z/E isomers of 4,10-tridecadienenitrile. A composition comprising an effective amount of at least one alkadienenitrile selected from 4,8-undecadienenitrile and isomers thereof, 4,9-dodecadienenitrile and isomers thereof, and 4,10-tridecadienenitrile and isomers thereof. Processes for the preparation of the isomeric alkadienenitriles are provided. The isomeric alkadienenitriles have a range of fresh, citric, ozonic and floral notes of exceptional strength.

    METHOD FOR PRODUCING LINEAR PENTENENITRILE
    9.
    发明申请
    METHOD FOR PRODUCING LINEAR PENTENENITRILE 有权
    生产线性胆固醇的方法

    公开(公告)号：US20160168082A1

    公开(公告)日：2016-06-16

    申请号：US14941167

    申请日：2015-11-13

    申请人： BASF SE

    发明人： Tim Jungkamp ,  Robert BAUMANN ,  Michael BARTSCH ,  Gerd HADERLEIN ,  Hermann LUYKEN ,  Jens SCHEIDEL ,  Tobias AECHTNER ,  Peter PFAB ,  Petra DECKERT ,  Wolfgang SIEGEL ,  Peter BASSLER

    IPC分类号： C07C253/30

    CPC分类号： C07C253/30 ,  C07C253/10 ,  Y02P20/582 ,  C07C255/07

    摘要： A process is described for preparing 3-pentenenitrile, characterized by the following process steps: (a) isomerizing a reactant stream which comprises 2-methyl-3-butenenitrile over at least one dissolved or dispersed isomerization catalyst to give a stream 1 which comprises the at least one isomerization catalyst, 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, (b) distilling stream 1 to obtain a stream 2 as the top product which comprises 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, and a stream 3 as the bottom product which comprises the at least one isomerization catalyst, (c) distilling stream 2 to obtain a stream 4 as the top product which, compared to stream 2, is enriched in (Z)-2-methyl-2-butenenitrile, based on the sum of all pentenenitriles in stream 2, and a stream 5 as the bottom product which, compared to stream 2, is enriched in 3-pentenenitrile and 2-methyl-3-butenenitrile, based on the sum of all pentenenitriles in stream 2, (d) distilling stream 5 to obtain a stream 6 as the bottom product which comprises 3-pentenenitrile and a stream 7 as the top product which comprises 2-methyl-3-butenenitrile.

    摘要翻译： 描述了制备3-戊烯腈的方法，其特征在于以下方法步骤：（a）在至少一种溶解或分散的异构化催化剂上异构化包含2-甲基-3-丁烯腈的反应物流，得到流1，其包含 至少一种异构化催化剂，2-甲基-3-丁烯腈，3-戊烯腈和（Z）-2-甲基-2-丁烯腈，（b）蒸馏物流1，得到作为顶部产物的物流2，其包含2-甲基 -3-丁烯腈，3-戊烯腈和（Z）-2-甲基-2-丁烯腈，以及作为底部产物的料流3，其包含至少一种异构化催化剂，（c）蒸馏物流2以获得物流4， 与流2相比，基于流2中的所有五烯丙烯的总和和作为底部产物的流5，与流2相比富含（Z）-2-甲基-2-丁烯腈的顶部产物与流2相比较 ，富含3-戊烯腈和2-甲基-3-丁烯腈，基于所有戊烯腈的总和 （d）蒸馏流5以获得作为底部产物的流6，其包含3-戊烯腈和作为顶部产物的料流7，其包含2-甲基-3-丁烯腈。