Process for preparing lactam imides
    101.
    发明授权
    Process for preparing lactam imides 失效
    制备内酰胺的方法

    公开(公告)号:US4608201A

    公开(公告)日:1986-08-26

    申请号:US612213

    申请日:1984-05-21

    CPC classification number: C08G69/20 C07D223/10

    Abstract: A process for preparing a lactam imide involves reacting together a lactam, a non-volatile carboxyl group-containing material, and an anhydride of a volatile carboxylic acid with the proviso that an appreciable amount of non-volatile carboxyl group-containing material and volatile carboxylic acid which is generated as the anhydride reacts are both present in the reaction mixture at the same time.

    Abstract translation: 制备内酰胺的方法包括使内酰胺,不挥发性含羧基材料和挥发性羧酸的酸酐反应,条件是可观察量的不挥发性含羧基材料和挥发性羧酸 酸酐反应生成的酸都同时存在于反应混合物中。

    Process for separating 11-cyanoundecanoic acid, cyclohexanone and .epsilon.
-
    103.
    发明授权
    Process for separating 11-cyanoundecanoic acid, cyclohexanone and .epsilon. - 失效
    分离11-氰基十一烷酸,环己酮和{68-己内酰胺的方法

    公开(公告)号:US4165328A

    公开(公告)日:1979-08-21

    申请号:US901089

    申请日:1978-04-28

    CPC classification number: C07C255/00 C07C45/783 C07C45/80 C07C45/82 C07D201/16

    Abstract: Disclosed is a process for separating 11-cyanoundecanoic acid, cyclohexanone and .epsilon.-caprolactam from a pyrolysis product obtained by pyrolyzing 1,1'-peroxydicyclohexylamine in the presence of steam at a temperature of 300.degree. to 1,000.degree. C. The pyrolysis product is first contacted with a mixture comprised of aqueous ammonia and at least one organic solvent selected from benzene, toluene and xylene, and the so prepared liquid is separated into the oily layer and the aqueous layer. On one hand, the oily layer is distilled to separate cyclohexanone therefrom. On the other hand, the aqueous layer is acidified to a pH of below 4.0 by adding thereto a mineral acid and maintained at a temperature of 40.degree. to 100.degree. C. to separate crude 11-cyanoundecanoic acid in molten form from the aqueous layer, and then, the separated crude molten 11-cyanoundecanoic acid is washed with hot water to extract .epsilon.-caprolactam therefrom.

    Abstract translation: 公开了一种通过在300℃至1000℃的温度下在1,1'-二氧化二环己基胺蒸气存在下热解得到的热解产物中分离出11-氰基十一烷酸,环己酮和ε-己内酰胺的方法。热解产物是先 与由氨水和选自苯,甲苯和二甲苯中的至少一种有机溶剂组成的混合物接触,将如此制备的液体分离成油层和水层。 一方面,将油层蒸馏以分离出环己酮。 另一方面,通过向其中加入无机酸将水层酸化至pH值低于4.0,并保持在40℃至100℃的温度下,将熔融形式的粗的11-氰基十一烷酸与水层分离, 然后,将分离的粗熔融的11-氰基十一烷酸用热水洗涤以从其中提取ε-己内酰胺。

    Process for preparing lower lactams from allylic halide substrates
    105.
    发明授权
    Process for preparing lower lactams from allylic halide substrates 失效
    从烯丙基卤化物底物制备低级内酰胺的方法

    公开(公告)号:US4110340A

    公开(公告)日:1978-08-29

    申请号:US745019

    申请日:1976-11-26

    Inventor: John F. Knifton

    CPC classification number: C07D201/02

    Abstract: This invention concerns processes for preparing cyclic, five-membered ring, lactams through the carbonylation of allylic substrates in the presence of rhodium catalysts.

    Abstract translation: 本发明涉及在铑催化剂存在下通过烯丙基底物的羰基化制备环状五元环,内酰胺的方法。

    Process for preparing epsilon-caprolactam
    110.
    发明授权
    Process for preparing epsilon-caprolactam 失效
    制备EPSILON-CAPROLACTAM的方法

    公开(公告)号:US3712887A

    公开(公告)日:1973-01-23

    申请号:US3712887D

    申请日:1970-10-02

    CPC classification number: C07D201/02

    Abstract: E-CAPROLACTAM IS PREPARED FROM A CYCLOHEXANE OXIDATION PRODUCT CONTAINING CYCLOHEXYL HYDROPEROXIDE AND OXIDATION BY-PRODUCTS INCLUDING 6-HYDROPEROXY-HEXANOIC ACID, WHICH HAS BEEN OBTAINED BY LIQUID PHASE OXIDATION OF CYCLOHEXANE, WITHOUT A METAL CATALYST, USING A MOLECULAR OXYGEN CONTAINING GAS, BY WASHING THE OXIDATION PRODUCT WITH WATER, SEPARATING THE RESULTING AQUEOUS PHASE CONTAINING 6-HYDROPEROXYHEXANOIC ACID AND HEATING THE ACID UNDER PRESSURE WITH AMMONIA AND HYDROGEN IN THE PRESENCE OF A HYDROGENATION CATALYST.

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