公开(公告)号：US2797216A

公开(公告)日：1957-06-25

申请号：US2797216D

CPC classification number: C07D201/04

公开(公告)号：US2721199A

公开(公告)日：1955-10-18

申请号：US39841753

申请日：1953-12-15

Applicant: DU PONT

Inventor： HUBER MELVIN L

IPC: C07D201/04

CPC classification number: C07D201/04

公开(公告)号：US2541874A

公开(公告)日：1951-02-13

申请号：US2541874D

CPC classification number: C07D201/16 ,  C07D201/04

公开(公告)号：US2351381A

公开(公告)日：1944-06-13

申请号：US2351381D

CPC classification number: C07D201/04

公开(公告)号：US2313026A

公开(公告)日：1943-03-02

申请号：US32890540

申请日：1940-04-10

Applicant: PAUL SCHLACK

Inventor： PAUL SCHLACK

IPC: C07D201/04

CPC classification number: C07D201/04

公开(公告)号：US12060326B2

公开(公告)日：2024-08-13

申请号：US18054558

申请日：2022-11-11

Applicant: HANWHA SOLUTIONS CORPORATION

Inventor： Jiyeon Kim ,  Youngjin Kim ,  Jeongseok Park ,  Jinho Park ,  Hyun Seo ,  Seonghoon Hyeong ,  Kyuho Song

IPC: C07D201/04

CPC classification number: C07D201/04

Abstract: The present invention relates to a laurolactam preparation method and synthesis apparatus, and epoxidation and a rearrangement reaction are performed in the conversion of cyclododecene into cyclododecanone so that the preparation method can synthesize laurolactam having a higher purity with a higher selectivity and in a higher yield than a conventional preparation method.

公开(公告)号：US20190241513A1

公开(公告)日：2019-08-08

申请号：US16318791

申请日：2017-09-07

Applicant: Sumitomo Chemical Company, Limited

Inventor： Kazuaki YOSHIMURA ,  Nobufumi WATANABE ,  Kohei SEKI ,  Masashi TERAMORI ,  Keisuke TANAKA

IPC: C07D201/04 ,  B01J29/40 ,  C01B39/36

CPC classification number: C07D201/04 ,  B01J29/40 ,  C01B39/36 ,  C07D211/76 ,  Y02P20/52

Abstract: A method for producing ε-caprolactam involves a step of Beckmann-rearranging cyclohexanone oxime in a gas phase in the presence of a zeolite catalyst containing silicon and at least one element selected from alkaline earth metal elements and magnesium. The concentration of the above-described element in the zeolite catalyst is 3 ppm by mass or more and 10000 ppm by mass or less.

公开(公告)号：US09908785B2

公开(公告)日：2018-03-06

申请号：US14899579

申请日：2014-06-20

Applicant: CAP III B.V.

Inventor： Johan Thomas Tinge ,  Geert Ekkelenkamp ,  Robert Geertman

IPC: B01D9/00 ,  C01C1/24 ,  C01C1/248 ,  C07D201/16 ,  C07D201/04 ,  C07C249/08

CPC classification number: C01C1/24 ,  B01D9/0022 ,  B01D9/0031 ,  B01D9/004 ,  B01D9/0063 ,  B01D2009/0086 ,  C01C1/248 ,  C07C249/08 ,  C07C2601/14 ,  C07D201/04 ,  C07D201/16 ,  C07C251/44

Abstract: The present invention provides a continuous process for producing ammonium sulfate crystals, wherein said process comprises: (a) feeding to a first group of crystallization sections, which crystallization sections are heat integrated in series, a first aqueous ammonium sulfate solution that contains one or more impurities; (b) feeding to a second group of crystallization sections, which crystallization sections are heat integrated in series, a second aqueous ammonium sulfate solution that contains one or more impurities; (c) crystallizing ammonium sulfate crystals in each crystallization section respectively from each of said solutions of ammonium sulfate that contain one or more impurities; (d) purging a fraction of the ammonium sulfate solution that contains one or more impurities from each of said crystallization sections; and (e) discharging ammonium sulfate crystals from each crystallization section, characterized in that: (i) both the first group of crystallization sections and the second group of crystallization sections are together heat integrated in one series of crystallization sections; wherein the first group of crystallization sections operates at higher temperature than the second group of crystallization sections; and (ii) the composition of the first aqueous ammonium sulfate solution that contains one or more impurities is different to the composition of the second aqueous ammonium sulfate solution that contains one or more impurities. Further provided is apparatus suitable for producing ammonium sulfate crystals.

公开(公告)号：US09533933B2

公开(公告)日：2017-01-03

申请号：US14815014

申请日：2015-07-31

Applicant: Kevin Micoine ,  Ralf Meier ,  Juergen Herwig ,  Martin Roos ,  Harald Haeger ,  Luca Cameretti ,  Jens Doering

Inventor： Kevin Micoine ,  Ralf Meier ,  Juergen Herwig ,  Martin Roos ,  Harald Haeger ,  Luca Cameretti ,  Jens Doering

IPC: C07C45/51 ,  C07C45/58 ,  C07D201/04 ,  B01J23/44 ,  C07C45/82 ,  C07C249/04 ,  C07D225/02 ,  C07D301/12 ,  C08G69/16 ,  C07C29/52 ,  C07C45/00 ,  C07C45/28 ,  C07C49/413

CPC classification number: C07C45/512 ,  B01J23/44 ,  C07C29/52 ,  C07C45/002 ,  C07C45/28 ,  C07C45/58 ,  C07C45/82 ,  C07C49/413 ,  C07C249/04 ,  C07D201/04 ,  C07D225/02 ,  C07D301/12 ,  C08G69/16 ,  C07C35/205

Abstract: Cyclododecanone (CDON) is prepared by epoxidizing cyclododecene (CDEN) to epoxycyclododecane (CDAN epoxide), and rearranging the CDAN epoxide to CDON to obtain a mixture comprising said CDON and CDEN, wherein CDEN is separated from the CDON-containing mixture and sent to the epoxidation to CDAN epoxide in step a.

Abstract translation: 通过环环十二碳烯（CDEN）环氧环十二烷（CDAN环氧化物）制备环十二烷酮（CDON），并将CDAN环氧化物重排为CDON，得到包含所述CDON和CDEN的混合物，其中CDEN与含CDON的混合物分离并送至 在步骤a中对CDAN环氧化物进行环氧化。

公开(公告)号：US20160279622A9

公开(公告)日：2016-09-29

申请号：US14263156

申请日：2014-04-28

Applicant: Honeywell International Inc. ,  University of Southampton

Inventor： Alan B. Levy ,  Robert Raja ,  Matthew E. Potter

IPC: B01J29/85

CPC classification number: B01J29/85 ,  B01J35/002 ,  C01B37/08 ,  C01B39/54 ,  C07D201/04 ,  C07D223/10 ,  C07D225/02 ,  Y02P20/52

Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ε-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ω-laurolactam produced from cyclododecanone oxime.

Abstract translation: 提供了通过使用硅铝磷酸盐催化剂进行贝克曼重排来从肟产生内酰胺的方法。 这些催化剂可用于气相或液相反应以将肟转化成内酰胺。 使用所公开的方法制备肟的高转化率和对选择性内酰胺的高选择性，包​​括由环己酮肟产生的ε-己内酰胺的高转化率和选择性以及由环十二酮肟产生的ω-月桂内酰胺的高转化率和选择性。