GB1403341A - Process for the purification of caprolactam - Google Patents

Process for the purification of caprolactam

Info

Publication number
GB1403341A
GB1403341A GB2352273A GB2352273A GB1403341A GB 1403341 A GB1403341 A GB 1403341A GB 2352273 A GB2352273 A GB 2352273A GB 2352273 A GB2352273 A GB 2352273A GB 1403341 A GB1403341 A GB 1403341A
Authority
GB
United Kingdom
Prior art keywords
caprolactam
purification
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB2352273A
Inventor
Otto Immel
Hans-Helmut Schwarz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
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.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB1403341A publication Critical patent/GB1403341A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Hydrogenated Pyridines (AREA)
GB2352273A 1972-05-19 1973-05-17 Process for the purification of caprolactam Expired GB1403341A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722224505 DE2224505C3 (en) 1972-05-19 1972-05-19 Process for purifying caprolactam

Publications (1)

Publication Number Publication Date
GB1403341A true GB1403341A (en) 1975-08-28

Family

ID=5845364

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2352273A Expired GB1403341A (en) 1972-05-19 1973-05-17 Process for the purification of caprolactam

Country Status (8)

Country Link
JP (1) JPS4954389A (en)
BE (1) BE799659A (en)
CA (1) CA1025854A (en)
DE (1) DE2224505C3 (en)
FR (1) FR2185623B1 (en)
GB (1) GB1403341A (en)
IT (1) IT985180B (en)
NL (1) NL7306843A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010271A1 (en) * 1978-10-17 1980-04-30 BASF Aktiengesellschaft Crystallisation process for the purification of crude caprolactam

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5212187A (en) * 1975-07-17 1977-01-29 Toray Ind Inc Method of purifying alpha-amino-epsilon- caprolactam
IT1113404B (en) * 1979-02-28 1986-01-20 Snia Viscosa INTERNATIONAL PATENTS S.R.L. VIA BRENTANO 2 MILAN
DE2939312C2 (en) * 1979-09-28 1984-01-05 Liba Maschinenfabrik Gmbh, 8674 Naila Thread feed for warp knitting machines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1416202A (en) * 1963-11-30 1965-10-29 Basf Ag purification of pyrrolidone-2
FR1490312A (en) * 1965-09-11 1967-07-28 Zimmer Ag Hans J Advanced process for the purification of epsilon-caprolactam

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0010271A1 (en) * 1978-10-17 1980-04-30 BASF Aktiengesellschaft Crystallisation process for the purification of crude caprolactam

Also Published As

Publication number Publication date
NL7306843A (en) 1973-11-21
FR2185623A1 (en) 1974-01-04
FR2185623B1 (en) 1976-11-12
DE2224505A1 (en) 1973-12-06
IT985180B (en) 1974-11-30
JPS4954389A (en) 1974-05-27
DE2224505C3 (en) 1980-09-18
DE2224505B2 (en) 1980-01-17
BE799659A (en) 1973-11-19
CA1025854A (en) 1978-02-07

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee