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15 条记录 (耗时 0.013 秒)

    Separating phthalonitriles from reaction gases containing the same
    1.
    发明授权
    Separating phthalonitriles from reaction gases containing the same 失效
    从含有它的反应气体中分离出苯并噻吩

    公开(公告)号：US3732275A

    公开(公告)日：1973-05-08

    申请号：US3732275D

    申请日：1970-12-30

    申请人： BASF AG

    发明人： PLATZ R ,  DECKER M ,  BUERGER G ,  STECHL H

    IPC分类号： C07C255/51 ,  C07C121/56

    CPC分类号： C07C255/00

    摘要： AN IMPROVED PROCESS FOR THE RECOVERY OF PHTHALONITRILES FROM HOT REACTION GASES CONTAINING THE SAME BY CONTACTING THE HOT REACTION GASES WITH A COOLANT WHICH IS AT A TEMPERATURE OF FROM 40* TO 200*C. AND COOLING THEM DOWN AT A RATE OF MORE THAN 350*C. PER SECONDS, THE COOLANT BEING WATER, BENZONITRILE OR O-TOLUNITRILE WHICH FROM RRECYCLING CONTAINS 2 TO 40% PHTHALONITRILES. O-PHTHALONITRILE IS SUITABLE FOR THE PRODUCTION OF PHTHALOCYANINES WHICH ARE VALUABLE PIGMENTS, TEREPHTHALONITRILE AND ISOPHTHALONITRILES CAN BE REDUCED TO THE CORRESPONDING DIAMINES WHICH ARE STARTING MATERIALS FOR THE MANUFACTURE OF POLYAMIDES WHICH CAN BE USED FOR THE PRODUCTION OF FIBERS.

    Process for the manufacture of aromatic nitriles
    3.
    发明授权
    Process for the manufacture of aromatic nitriles 失效
    制备硝基苯胺的方法

    公开(公告)号：US3776937A

    公开(公告)日：1973-12-04

    申请号：US3776937D

    申请日：1972-06-23

    申请人： LUMMUS CO

    发明人： GELBEIN A

    IPC分类号： C07C255/51 ,  C07C121/12 ,  C07C121/56

    CPC分类号： C07C253/20 ,  C07C255/51

    摘要： IN THE PRODUCTION OF AROMATIC POLYNITRILES AHVING AT LEAST ONE PAIR OF NITRILE GROUPS IN THE ORTHO POSITION RELATIVE TO EACH OTHER BY THE REACTION OF AN ALKYL AROMATIC HYDROCARBON WITH AMMONIA, THE PROBLEM OF IMIDE FORMATION CAN BE AT LEAST PARTIALLY RESOLVED BY PASSING THE PRODUCT STREAM OF THE RECTION OVER A DEHYDRATION CATALYST TO CONVENT IMIDES PRESENT TO ADDITIONAL NITRILE TO PRODUCT. IF NECCESSARY, ADDITIONAL AMMONIA CAN BE ADDED.

    Nematic compounds
    4.
    发明授权
    Nematic compounds 失效
    向列化合物

    公开(公告)号：US4637897A

    公开(公告)日：1987-01-20

    申请号：US638089

    申请日：1984-08-06

    申请人： Stephen M. Kelly

    发明人： Stephen M. Kelly

    IPC分类号： C07C17/00 ,  C07C25/18 ,  C07C39/42 ,  C07C41/00 ,  C07C43/225 ,  C07C45/46 ,  C07C49/84 ,  C07C53/44 ,  C07C67/00 ,  C07C69/75 ,  C07C69/757 ,  C07C69/76 ,  C07C69/78 ,  C07C253/00 ,  C07C255/50 ,  C07C255/54 ,  C07C255/55 ,  C07C255/57 ,  C09K19/30 ,  G02F1/13 ,  C07C25/13 ,  C07C121/52 ,  C07C121/56

    CPC分类号： C07C255/00 ,  C07C25/18 ,  C07C43/225 ,  C07C45/46 ,  C07C49/84 ,  C07C53/44 ,  C09K19/3028 ,  C09K19/3066 ,  C09K19/3068

    摘要： Nematic compounds with a negative DC antisotropy, characterized by the formula I ##STR1## in which m=1 or 2, r is zero or 1 and m+r=1 or 2, and R.sup.1 and R.sup.2 are identical or different and are selected from alkyl and alkoxy groups each having 1-12 carbon atoms in a straight or branched chain, which may be chiral, Z is a bridge member selected from a single bond and the groups of the formulae --CH.sub.2 CH.sub.2 --, --OCH.sub.2 --, --O--CO-- or --CO--O--, one of the groups X and Y is selected from fluorine, chlorine, bromine and cyano and the other of the groups X and Y is selected from hydrogen, fluorine, chlorine, bromine and cyano, with the proviso that m=r=1 if X and Y are both cyano, are suitable as components for liquid crystal mixtures having an overall negative DC anisotropy, such as are required in particular for electro-optical displays of the type of guest/host displays or homotropic-nematic displays.

    摘要翻译： 具有负直流消偏性的向列化合物，其特征在于其中m = 1或2，r为0或1，m + r = 1或2，并且R 1和R 2相同或不同并且被选择的式I 在直链或支链上各自具有1-12个碳原子的烷基和烷氧基，其可以是手性的，Z是选自单键的桥连体，式-CH 2 CH 2 - ， - OCH 2 - ，-O -CO-或-CO-O-，基团X和Y之一选自氟，氯，溴和氰基，X和Y中的另一个选自氢，氟，氯，溴和氰基，与 条件是如果X和Y都是氰基，则m = r = 1，适合作为具有总的负DC各向异性的液晶混合物的组分，例如特别对客体/主机显示器类型的电光显示器 或同向向列型显示器。

    Treatment of waste water from nitrile production
    7.
    发明授权
    Treatment of waste water from nitrile production 失效
    处理腈水生产废水

    公开(公告)号：US4246417A

    公开(公告)日：1981-01-20

    申请号：US905958

    申请日：1978-05-15

    申请人： Utah Tsao

    发明人： Utah Tsao

    IPC分类号： B01D3/38 ,  C02F1/20 ,  C02F1/58 ,  C02F9/00 ,  C07D213/57 ,  C07C121/30 ,  C07C121/54 ,  C07C121/56

    CPC分类号： C02F1/586 ,  B01D3/38 ,  C02F1/20 ,  C02F2103/38 ,  Y10S203/03

    摘要： Waste water recovered from a nitrile production effluent, containing ammonia, hydrogen cyanide, carbon dioxide and water soluble polymers is stripped of ammonia, carbon dioxide and hydrogen cyanide to produce an aqueous stream containing the water soluble polymer. At least a portion of this stream is introduced into a steam scrubber to generate steam therefrom, with scrubber bottoms and any remaining water from the stripping operation being introduced into a reboiler to provide steam for the stripping and an aqueous concentrate of the water soluble polymer. Heat for the reboiler can be provided by indirect heat transfer with steam from the scrubber which produces a condensate suitable as feed water for steam generation.

    摘要翻译： 从腈生产流出物中回收的含氨，氰化氢，二氧化碳和水溶性聚合物的废水被除去氨，二氧化碳和氰化氢，以产生含有水溶性聚合物的水流。 将该流的至少一部分引入蒸汽洗涤器以从其中产生蒸汽，其中洗涤塔底部和来自汽提操作的任何剩余的水被引入再沸器以提供用于汽提的蒸汽和水溶性聚合物的含水浓缩物。 用于再沸器的热可以通过间接传热与来自洗涤器的蒸汽提供，其产生适于作为用于蒸汽产生的给水的冷凝物。

    Preparation of iodophthalonitrile
    10.
    发明授权
    Preparation of iodophthalonitrile 失效
    碘邻苯二腈的制备

    公开(公告)号：US4351776A

    公开(公告)日：1982-09-28

    申请号：US195999

    申请日：1980-10-08

    申请人： Teddy M. Keller ,  James R. Griffith

    发明人： Teddy M. Keller ,  James R. Griffith

    IPC分类号： C07C255/51 ,  C07D487/22 ,  C07C121/56

    CPC分类号： C07D487/22 ,  C07C255/00

    摘要： Iodophthalonitrile is prepared by mixing aminophthalonitrile with sulfuric acid at a temperature below 25.degree. C., reacting that product with sodium nitrite at a temperature below 15.degree. C., and reacting that product with potassium iodide at a temperature below 20.degree. C. A fluoroalkyl phthalonitrile is prepared by mixing fluoroalkyl iodide, activated copper, iodophthalonitrile, and a solvent under an inert atmosphere at a temperature from 110.degree. C. to 125.degree. C. at least until the solution turns green. Both compounds are useful in synthesizing phthalocyanines and polyphthalocyanines.

    摘要翻译： 通过在低于25℃的温度下将氨基邻苯二甲腈与硫酸混合，将该产物与低于15℃的亚硝酸钠反应，并在低于20℃的温度下使该产物与碘化钾反应制备碘代邻苯二甲腈。 邻苯二腈通过在惰性气氛下在110℃至125℃的温度下混合氟代烷基碘，活化的铜，碘代邻苯二甲腈和溶剂来制备，至少直到溶液变绿。 这两种化合物都可用于合成酞菁和多酞菁。