公开(公告)号：US3476744A

公开(公告)日：1969-11-04

申请号：US3476744D

申请日：1966-06-07

Applicant: INVENTA AG

Inventor： BERTHER CLAU ,  SAILER RICHARD

IPC: B01D9/00 ,  B01D11/04 ,  C07D201/16 ,  C07D41/00 ,  C07D41/06

CPC classification number: C07D201/16 ,  B01D9/0036 ,  B01D9/0059 ,  B01D11/0488

Abstract: Lactams are purified by forming a melt of crude lactam and adding to it sufficiently finely divided solid crude lactam to make a mixture in which the melt forms 50-90% by weight, maintaining the mixture in an adiabatic state and, after melting equilibrium is reached, separating crystals of purified lactam from the mixture. The process is particularly suitable for the purification of lactams having 7-13 ring members. The crude lactam may be subjected to a preliminary treatment with potassium permanganate prior to purification.

公开(公告)号：US3399119A

公开(公告)日：1968-08-27

申请号：US56369566

申请日：1966-07-08

Applicant: MARATHON OIL CO

Inventor： HALL DAVID W ,  HURLEY JR EDWARD

IPC: C07D201/16

CPC classification number: C07D201/16

公开(公告)号：US3397731A

公开(公告)日：1968-08-20

申请号：US55547066

申请日：1966-06-06

Applicant: MALONEY CRAWFORD TANK

Inventor： GRAVIS CHARLES K ,  WOOD HAROLD S ,  SEIPP GEORGE F

IPC: B01D1/00 ,  B01D1/14 ,  B01D3/34 ,  B01D17/00 ,  B01D17/02 ,  B01D53/14 ,  B01D53/26 ,  B01D53/50 ,  B01D53/52 ,  C01B3/52 ,  C01B17/60 ,  C07C7/11 ,  C07D201/16 ,  C07D207/26 ,  C07D207/267 ,  C10L3/10

CPC classification number: C07D207/267 ,  B01D1/00 ,  B01D1/14 ,  B01D3/346 ,  B01D17/00 ,  B01D17/0205 ,  B01D53/1493 ,  B01D53/263 ,  B01D53/50 ,  B01D53/507 ,  B01D53/526 ,  C01B3/52 ,  C01B17/60 ,  C01B2203/0415 ,  C01B2203/0475 ,  C01B2203/048 ,  C01B2203/0485 ,  C01B2203/0495 ,  C07C7/11 ,  C07D201/16 ,  C10G2300/1025 ,  C10L3/10 ,  C07C9/04

公开(公告)号：US3358018A

公开(公告)日：1967-12-12

申请号：US36127364

申请日：1964-04-20

Applicant: SNIA VISCOSA

Inventor： WERNER MUENCH ,  GIOVANNA IELO

IPC: C07C51/48 ,  C07D201/06 ,  C07D201/16

CPC classification number: C07D201/16 ,  C07C51/48 ,  C07D201/06 ,  C07C63/04 ,  C07C61/08 ,  C07C63/06

公开(公告)号：US20230054797A1

公开(公告)日：2023-02-23

申请号：US17796631

申请日：2021-02-04

Applicant: CAP III B.V.

Inventor： Johan Thomas Tinge ,  Jarno Martijn Westerhof ,  Olaf Poorter

IPC: C01C1/242 ,  C07D201/06 ,  C07D201/16

Abstract: The invention provides a process for the production of crystalline ammonium sulfate, wherein the process comprises performing a Beckmann rearrangement reaction, neutralizing the Beckmann rearrangement reaction mixture, separating a first aqueous ammonium sulfate phase and an aqueous ε-caprolactam phase, charging the first ammonium sulfate phase to a first evaporative type crystallization section wherein crystalline ammonium sulfate is obtained, discharging from the first evaporative type crystallization section mother liquor enriched in organic components, extracting the aqueous ε-caprolactam phase to obtain an extracted ε-caprolactam phase and a second aqueous ammonium sulfate phase, discharging the mother liquor that is discharged from the first evaporative type crystallization section and/or the second aqueous ammonium sulfate phase to a second evaporative type crystallization section wherein evaporative type crystallization is performed so that a three-phase system occurs. At least a liquid oily phase is recovered from the three-phase system. The invention further provides a plant suitable to carry out the process of the invention, crystalline ammonium sulfate and a liquid oily phase obtained by the process of the invention.

公开(公告)号：US20210040036A1

公开(公告)日：2021-02-11

申请号：US17000116

申请日：2020-08-21

Applicant: AquafilSLO d.o.o.

Inventor： Anacleto Dal Moro ,  Michele Cecchetto ,  Denis Jahic ,  Vid Margon

IPC: C07D201/16 ,  B01D3/10 ,  B01D3/14 ,  B01D11/04 ,  C07D201/06 ,  C07D223/10

Abstract: The present invention relates to a process for purifying caprolactam from solutions of crude caprolactam by a direct treatment with one or more alkaline compounds of polyvalent metals, preferably bivalent and trivalent, without resorting to organic solvent extraction as used in the usual purification process.
A further subject of the present invention is a facility devoid of a unit for organic solvent extraction and designed to carry out the caprolactam purification process described herein.

公开(公告)号：US20190382339A1

公开(公告)日：2019-12-19

申请号：US16488016

申请日：2017-12-15

Applicant: AquafilSLO d.o.o.

Inventor： Anacleto Dal Moro ,  Michele Cecchetto ,  Denis Jahic ,  Vid Margon

IPC: C07D201/16 ,  C07D223/10 ,  C07D201/06 ,  B01D11/04 ,  B01D3/10 ,  B01D3/14

Abstract: The present invention relates to a process for purifying caprolactam from solutions of cmde caprolactam by a direct treatment with one or more alkaline compounds of polyvalent metals, preferably bivalent and trivalent, without resorting to organic solvent extraction as used in the usual purification process. A further subject of the present invention is a facility devoid of a unit for organic solvent extraction and designed to carry out the caprolactam purification process described herein.

公开(公告)号：US09923194B2

公开(公告)日：2018-03-20

申请号：US15017864

申请日：2016-02-08

Applicant: BASF SE

Inventor： Rolf Pinkos ,  Thomas Vogler ,  Karl Ott

IPC: C07D201/16 ,  C07D207/267 ,  H01M4/04 ,  H01M4/139 ,  C07D207/273 ,  C07D207/263

CPC classification number: H01M4/139 ,  C07D207/263 ,  C07D207/273 ,  H01M4/04

Abstract: Process for purifying N-alkylpyrrolidones which due to a previous use comprise at least one of the impurities of the formula I or II where R is hydrogen or a C1-C20-alkyl group, wherein a basic compound is added to the N-alkylpyrrolidone to be purified and the temperature of the mixture is at least 80° C. not more than 20 minutes after addition of the basic compound and N-alkylpyrrolidone is distilled off from the mixture obtained.

公开(公告)号：US09096516B2

公开(公告)日：2015-08-04

申请号：US13109450

申请日：2011-05-17

Applicant: Hideto Sugiura ,  Toru Inaoka ,  Shigeyuki Nozaki ,  Yoshihisa Oka

Inventor： Hideto Sugiura ,  Toru Inaoka ,  Shigeyuki Nozaki ,  Yoshihisa Oka

IPC: C07D201/16 ,  B01D9/00 ,  C07D207/267

CPC classification number: C07D207/267 ,  B01D9/0059 ,  C07D201/16

Abstract: A method for producing N-vinyl-2-pyrrolidone by crystallization including: controlling a water content in a feed N-vinyl-2-pyrrolidone solution at an inlet of a crystallizer so as to be not lower than 0.7% by weight and not higher than 10% by weight based on the total weight of the N-vinyl-2-pyrrolidone solution; and supplying the feed N-vinyl-2-pyrrolidone solution to a crystallization process.

Abstract translation: 通过结晶生产N-乙烯基-2-吡咯烷酮的方法包括：将结晶器入口处的进料N-乙烯基-2-吡咯烷酮溶液中的水含量控制在不低于0.7重量％且不高于 基于N-乙烯基-2-吡咯烷酮溶液的总重量的10重量％以上; 并将进料N-乙烯基-2-吡咯烷酮溶液供给至结晶过程。

公开(公告)号：US08846903B2

公开(公告)日：2014-09-30

申请号：US12666703

申请日：2008-06-25

Applicant: Meir Bialer ,  Boris Yagen ,  Jakob Avi Shimshoni

Inventor： Meir Bialer ,  Boris Yagen ,  Jakob Avi Shimshoni

IPC: C07D201/16 ,  C07C275/50

CPC classification number: C07C275/50

Abstract: Novel acyl-urea containing compounds, processes of preparing same, compositions containing same and uses thereof in the treatment of neurological diseases and disorders such as epilepsy, neuropathic pain, bipolar disorder, status epilepticus, chemically-induced convulsions and/or seizure disorders, febrile convulsions conditions, metabolic disturbances and a sustenance withdrawal conditions, are provided. Also provided are uses of these and other acyl-urea containing compounds in the treatment of neurological diseases and disorders.

Abstract translation: 新型含酰基脲的化合物，其制备方法，含有该组合物的组合物及其用于治疗神经疾病和病症如癫痫，神经性疼痛，双相情感障碍，癫痫持续状态，化学诱发性惊厥和/或发作性疾病，发热 提供抽搐状况，代谢紊乱和维持戒断条件。 还提供了这些和其它含酰基脲的化合物在治疗神经疾病和病症中的用途。