KR890016014A - 고순도 카프로락탐의 제조방법 - Google Patents

고순도 카프로락탐의 제조방법 Download PDF

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Publication number
KR890016014A
KR890016014A KR1019890004665A KR890004665A KR890016014A KR 890016014 A KR890016014 A KR 890016014A KR 1019890004665 A KR1019890004665 A KR 1019890004665A KR 890004665 A KR890004665 A KR 890004665A KR 890016014 A KR890016014 A KR 890016014A
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KR
South Korea
Prior art keywords
high purity
producing high
mixture
caprolactam
level
Prior art date
Application number
KR1019890004665A
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English (en)
Other versions
KR950010682B1 (ko
Inventor
가즈오 단
다까시 히로나까
미찌오 나까무라
Original Assignee
스즈끼 세이지
미쓰비시 가세이 가부시끼가이샤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=13929082&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=KR890016014(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 스즈끼 세이지, 미쓰비시 가세이 가부시끼가이샤 filed Critical 스즈끼 세이지
Publication of KR890016014A publication Critical patent/KR890016014A/ko
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Publication of KR950010682B1 publication Critical patent/KR950010682B1/ko

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/16—Separation or purification

Abstract

내용 없음

Description

고순도 카프로락탐의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제 1 도는 본 발명을 수행하는 장치도의 한예를 나타낸다.

Claims (4)

  1. 조 카프로락탐의 용융액 및 물을 함유하는 혼합물로 부터 고순도 카프로락탐을 제조하는 방법에 있어서, 1 내지 22Torr의 감압하의 결정화기 내에서 혼합물중 물의 농도를 0.5 내지 10중량%의 수준으로 유지하면서 혼합물을 냉각하여, 고순도 카프로락탐을 결정화한후, 생성된 결정을 분리하는 것으로 이루어짐을 특징으로 하는 고순도 카프로락탐의 제조방법.
  2. 제 1 항에 있어서, 혼합물중 물의 농도를 1 내지 8중량%의 수준으로 유지하는 방법.
  3. 제 1 항에 있어서, 감압이 5 내지 20Torr의 수준인 방법.
  4. 제 1 항에 있어서, 결정화 온도가 30 내지 65℃의 범위내인 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019890004665A 1988-04-09 1989-04-08 고순도 카프로락탐의 제조방법 KR950010682B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP63-87947 1988-04-09
JP87947/88 1988-04-09
JP63087947A JPH075543B2 (ja) 1988-04-09 1988-04-09 高純度カプロラクタムの製造法

Publications (2)

Publication Number Publication Date
KR890016014A true KR890016014A (ko) 1989-11-28
KR950010682B1 KR950010682B1 (ko) 1995-09-21

Family

ID=13929082

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019890004665A KR950010682B1 (ko) 1988-04-09 1989-04-08 고순도 카프로락탐의 제조방법

Country Status (5)

Country Link
US (1) US4900821A (ko)
EP (1) EP0337323B1 (ko)
JP (1) JPH075543B2 (ko)
KR (1) KR950010682B1 (ko)
DE (1) DE68923312T2 (ko)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW215084B (en) * 1992-04-17 1993-10-21 Sumitomo Chemical Co Process for producing a high purity caprolactam
US5990306A (en) * 1997-09-03 1999-11-23 Alliedsignal Inc. Process for the purification of caprolactam obtained from the depolymerization of polyamide-containing carpet
EP0943608A1 (en) * 1998-03-20 1999-09-22 Dsm N.V. Process for the continuous purification of crude epsilon--caprolactam
US6821760B1 (en) * 1998-09-30 2004-11-23 Nippon Shokubai Co., Ltd. Methods for producing L-aspartic acid
FR2803296B1 (fr) 1999-12-30 2002-02-15 Rhodia Polyamide Intermediates Procede de purification de lactames
JP4182273B2 (ja) 2000-06-27 2008-11-19 住友化学株式会社 ε−カプロラクタムの製造方法
CN101190893B (zh) * 2006-11-20 2010-04-14 中国石油化学工业开发股份有限公司 一种纯化粗己内酰胺水溶液的设备与方法
JP2013133284A (ja) * 2011-12-26 2013-07-08 Sumitomo Chemical Co Ltd ε−カプロラクタムの製造方法
JP6003755B2 (ja) * 2012-12-19 2016-10-05 東レ株式会社 ラクタムの精製方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1022591B (de) * 1953-06-27 1958-01-16 Inventa A G Fuer Forschung & P Verfahren zur Nachreinigung von Lactamen der ªÏ-Aminocarbonsaeuren
US2813858A (en) * 1954-08-26 1957-11-19 Allied Chem & Dye Corp Process for purifying epsilon-caprolactam
US3426744A (en) * 1964-02-27 1969-02-11 United Aircraft Corp Heart pump cannula
DE1930218A1 (de) * 1969-06-13 1970-12-23 Bayer Ag Verfahren zur Reinigung von epsilon-Caprolactam
DE3735054A1 (de) * 1987-10-16 1989-04-27 Basf Ag Verfahren zur gewinnung von caprolactam aus leichtsiedern oder schwersiedern der caprolactamdestillation oder gemischen derselben

Also Published As

Publication number Publication date
US4900821A (en) 1990-02-13
KR950010682B1 (ko) 1995-09-21
DE68923312T2 (de) 1996-04-04
EP0337323A2 (en) 1989-10-18
EP0337323B1 (en) 1995-07-05
JPH075543B2 (ja) 1995-01-25
DE68923312D1 (de) 1995-08-10
JPH01261363A (ja) 1989-10-18
EP0337323A3 (en) 1990-07-18

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