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    니트릴계 단량체의 회수 방법 및 회수 장치
    2.
    发明申请
    니트릴계 단량체의 회수 방법 및 회수 장치 审中-公开

    公开(公告)号：WO2022055104A1

    公开(公告)日：2022-03-17

    申请号：PCT/KR2021/008780

    申请日：2021-07-09

    申请人： 주식회사 엘지화학

    发明人： 신상철 ,  고준석 ,  조용헌 ,  신준호

    IPC分类号： C07C253/02 ,  C07C253/32 ,  C07C255/08

    摘要： 본 발명은 니트릴계 단량체의 회수 방법에 관한 것으로, 보다 상세하게는 니트릴계 단량체, 질소 화합물 및 물을 포함하는 피드 스트림을 제1 증류탑으로 공급하여, 물을 포함하는 하부 배출 스트림과 니트릴계 단량체, 질소 화합물 및 물을 포함하는 상부 배출 스트림으로 분리하는 단계(S10); 상기 제1 증류탑의 상부 배출 스트림을 응축시키고 디캔터에 공급하여, 물 층과, 니트릴계 단량체 및 질소 화합물을 포함하는 유기층으로 분리하는 단계(S20); 상기 디캔터로부터 배출되는 유기층 스트림을 제2 증류탑으로 공급하여, 질소 화합물을 포함하는 하부 배출 스트림과 니트릴계 단량체 및 질소 화합물을 포함하는 상부 배출 스트림으로 분리하는 단계(S30); 및 상기 제2 증류탑의 상부 배출 스트림의 일부를 분기하여 상기 제2 증류탑으로 환류시키는 단계(S40)를 포함하는 니트릴계 단량체의 회수 방법을 제공한다.

    PROCESS FOR PREPARING 3-METHYLSULFONYLPROPIONITRILE
    3.
    发明申请
    PROCESS FOR PREPARING 3-METHYLSULFONYLPROPIONITRILE 审中-公开
    制备3-甲基磺酰脲的方法

    公开(公告)号：WO2013130436A1

    公开(公告)日：2013-09-06

    申请号：PCT/US2013/027749

    申请日：2013-02-26

    申请人： OLATEC INDUSTRIES LLC.

    发明人： ST. LAURENT, Joseph P. ,  JONES, Gerald S. ,  BRESSE, David M.

    IPC分类号： C07C315/02 ,  C07C317/04 ,  C07C253/32 ,  C07C255/03

    CPC分类号： C07C315/02 ,  C07B2200/13 ,  C07C315/00 ,  C07C315/06 ,  C07C317/28 ,  C07C317/44

    摘要： The present invention relates to processes for preparing 3-methylsulfonylpropionitrile. The processes provide a good yield and a good purity of the final product and provide a controllable reaction. The present invention also relates to a crystalline form of 3- methylsulfonylpropionitrile having X-ray diffraction peaks at 13.9 ± 0.1, 19.2± 0.1, 20.0± 0.1, 22.5± 0.1, 23.2± 0.1, 25.7± 0.1, 28.1± 0.1, 29.9± 0.1, and 30.6± 0.1 degrees 20, and wherein the most intense peak is the peak at 13.9 ± 0.1 degrees 20.

    摘要翻译： 本发明涉及3-甲基磺酰基丙腈的制备方法。 该方法提供了最终产物的良好产率和良好的纯度并提供了可控的反应。 本发明还涉及在13.9±0.1,19.2±0.1,20.0±0.1,22.5±0.1,23.2±0.1,25.7±0.1,23.1±0.1,29.7±0.1,28.1±0.1,29.9±±的X射线衍射峰的3-甲基磺酰基丙腈的结晶形式 0.1和30.6±0.1度20，其中最强峰是13.9±0.1度20的峰。

    NITRILE PROCESS
    6.
    发明申请
    NITRILE PROCESS 审中-公开
    腈工艺

    公开(公告)号：WO0246293B1

    公开(公告)日：2003-05-15

    申请号：PCT/US0146985

    申请日：2001-11-06

    申请人： DU PONT

    发明人： ROGERS JANET MARIE ,  BLACKSTONE ROBERT CLIFFORD ,  HORSAGER JEFFREY JON

    IPC分类号： C07C253/32 ,  C07C253/26 ,  C07C253/34 ,  C07C255/08 ,  C04C255/03

    CPC分类号： C07C253/34 ,  C07C255/08

    摘要： A process for purifying a nitrile such as acrylonitrile is disclosed. The process comprises (1) contacting a product mixture, which comprises acrylonitrile and hydrogen cyanide, with an acid or a precursor of the acid to produce an acid-treated product; and (2) recovering the nitrile from the acid-treated product. The product mixture can be produced by contacting ammonia with a hydrocarbon such as an olefin under a condition effective to produce a nitrile and hydrogen cyanide.

    摘要翻译： 公开了一种纯化腈如丙烯腈的方法。 该方法包括（1）使包含丙烯腈和氰化氢的产物混合物与酸或酸的前体接触以产生酸处理的产物; 和（2）从酸处理产物中回收腈。 产物混合物可以通过在有效产生腈和氰化氢的条件下使氨与烃如烯烃接触来制备。

    VINYL MONOMER POLYMERIZATION INHIBITION USING HINDERED HYDROXYLAMINES
    7.
    发明申请
    VINYL MONOMER POLYMERIZATION INHIBITION USING HINDERED HYDROXYLAMINES 审中-公开
    使用羟基羟胺的乙烯单体聚合抑制

    公开(公告)号：WO00014177A1

    公开(公告)日：2000-03-16

    申请号：PCT/US1999/020598

    申请日：1999-09-08

    IPC分类号： C07B63/04 ,  C07C7/20 ,  C07C15/46 ,  C07C17/42 ,  C07C21/06 ,  C07C51/50 ,  C07C57/075 ,  C07C67/62 ,  C07C69/15 ,  C07C253/32 ,  C07C255/08 ,  C09K15/30 ,  C09K15/20 ,  C07C239/08

    CPC分类号： C09K15/30 ,  C07B63/04 ,  C07C7/20 ,  C07C51/50 ,  C07C253/32 ,  C07C15/46 ,  C07C11/167 ,  C07C57/04 ,  C07C11/18 ,  C07C255/08

    摘要： It has been discovered that the polymerization of vinyl aromatic compounds, such as styrene, may be inhibited by the addition of a composition that contains a hindered hydroxylamine, and, optionally, a synergist together with the hindered hydroxylamine. In one embodiment of the invention, the hindered N,N-disubstituted hydroxylamine has the formula: [(R R R )C]2N-OH where R , R , and R are independently selected from the group consisting of hydrogen, straight, branched or cyclic alkyl, aryl, aralkyl, and alkaryl moieties; where no more than two of R , R , and R on each C can be hydrogen at a time; where one or more of R , R , and R on one C may be joined to a R , R , and R on the other C to form a cyclic moiety selected from the group consisting of alkylene, and aralkylene moieties; where any two of the R , R , and R on any one C may be joined together to form a cycloalkyl; where any of the above definitions of R , R , and R may contain one or more heteroatoms selected from the group consisting of N, O and S; and where the total number of carbon atoms in the hindered N,N-disubstituted hydroxylamine ranges from 6 to 70. Optional synergists may include alkyl-substituted hydroxyarenes such as 2,5-di-tert-butylhydroquinone, and hydrogen transfer agents such as 1,2,3,4-tetrahydronaphthalene; and the like, and mixtures thereof.

    摘要翻译： 已经发现乙烯基芳族化合物如苯乙烯的聚合可以通过加入含有受阻羟胺的组合物和任选的增效剂与受阻羟胺一起被抑制。 在本发明的一个实施方案中，受阻的N，N-二取代的羟胺具有下式：[（R 1 R 2 R 3）C] 2N-OH，其中R 1，R 2， R 3独立地选自氢，直链，支链或环状烷基，芳基，芳烷基和烷芳基部分; 其中每个C上R 1，R 2和R 3中不超过两个可以是氢; 其中一个C上的R 1，R 2和R 3中的一个或多个可以在另一个C上连接到R 1，R 2和R 3，以形成 选自亚烷基和亚芳基部分的环状部分; 其中任何一个C上的R 1，R 2和R 3中的任何两个可以连接在一起形成环烷基; 其中R 1，R 2和R 3的上述定义中的任何一个可以含有一个或多个选自N，O和S的杂原子; 并且其中受阻N，N-二取代羟胺中的碳原子总数范围为6至70.任选的增效剂可包括烷基取代的羟基芳烃如2,5-二叔丁基氢醌和氢转移剂如1 1,2,3,4-四氢化萘; 及其混合物。

    POLYMERIZATION INHIBITION OF ACRYLATES USING BLENDS OF NITROXIDES
    8.
    发明申请
    POLYMERIZATION INHIBITION OF ACRYLATES USING BLENDS OF NITROXIDES 审中-公开
    使用硝化物的混合物进行丙烯酸酯的聚合抑制

    公开(公告)号：WO98056746A1

    公开(公告)日：1998-12-17

    申请号：PCT/EP1998/003342

    申请日：1998-06-04

    IPC分类号： C07D211/94 ,  C07C51/50 ,  C07C57/07 ,  C07C57/075 ,  C07C67/62 ,  C07C69/54 ,  C07C253/32 ,  C07C255/08 ,  C07C57/04

    CPC分类号： C07C253/32 ,  C07C51/50 ,  C07C67/62 ,  C07C57/04 ,  C07C69/54 ,  C07C255/08

    摘要： Ethylenically unsaturated carboxyl monomers, such as acrylic or methacrylic acid or their esters, are protected from premature polymerization during manufacture and storage in the presence or absence of water by the incorporation therein of an effective stabilizing amount of a blend of two or more nitroxides. Some of these blends provide synergistic stabilization efficacy much superior to the stabilization results obtained by use of either nitroxide alone.

    摘要翻译： 乙烯基不饱和羧基单体如丙烯酸或甲基丙烯酸或其酯在制备和储存期间在水存在或不存在的情况下通过其中加入有效稳定量的两种或更多种氮氧化物的共混物来防止过早聚合。 这些共混物中的一些提供了协同稳定效果，远优于单独使用硝基氧所获得的稳定结果。