BE855367A - PURIFICATION OF EPSILON-CAPROLACTAM - Google Patents

PURIFICATION OF EPSILON-CAPROLACTAM

Info

Publication number: BE855367A
Authority: BE; Belgium
Prior art keywords: caprolactam; epsilon; purification
Prior art date: 1976-06-05

Application number

BE178173A

Other languages

French (fr)

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.)

1976-06-05

Filing date

1977-06-03

Publication date

1977-12-05

1977-06-03 Application filed by Bayer Ag filed Critical Bayer Ag

1977-12-05 Publication of BE855367A publication Critical patent/BE855367A/en

Links

JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 title 2
238000000746 purification Methods 0.000 title 1

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)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Pyrrole Compounds (AREA)
Polyamides (AREA)

BE178173A 1976-06-05 1977-06-03 PURIFICATION OF EPSILON-CAPROLACTAM BE855367A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19762625402 DE2625402A1 (en)	1976-06-05	1976-06-05	CLEANING EPSILON CAPROLACTAM

Publications (1)

Publication Number	Publication Date
BE855367A true BE855367A (en)	1977-12-05

Family

ID=5979933

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE178173A BE855367A (en)	1976-06-05	1977-06-03	PURIFICATION OF EPSILON-CAPROLACTAM

Country Status (10)

Country	Link
JP (1)	JPS52151186A (en)
BE (1)	BE855367A (en)
BR (1)	BR7703572A (en)
CH (1)	CH626339A5 (en)
DD (1)	DD132491A5 (en)
DE (1)	DE2625402A1 (en)
ES (1)	ES459328A1 (en)
FR (1)	FR2353535A1 (en)
GB (1)	GB1535485A (en)
NL (1)	NL7706080A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2845075A1 (en) *	1978-10-17	1980-05-08	Basf Ag	METHOD FOR PURIFYING ROHCAPROLACTAM
CN115253380B (en) *	2022-08-19	2023-09-01	清元智能科技研究院(湖北)有限公司	Caprolactam extraction system and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH522649A (en) *	1970-04-17	1973-04-13	Buchs Metallwerk Ag	Caprolactam purification - by solvent extn and crystallisation using same solvent
SU387996A1 (en) *	1971-04-30	1973-06-22		METHOD OF CLEANING CAPROLACTAM
CH564528A5 (en) *	1972-06-14	1975-07-31	Buchs Metallwerk Ag	Purification of caprolactam freed from water - by counter-current multi-stage cystallisation from the melt using a solvent

1976
- 1976-06-05 DE DE19762625402 patent/DE2625402A1/en not_active Withdrawn
1977
- 1977-05-30 GB GB2272777A patent/GB1535485A/en not_active Expired
- 1977-05-31 ES ES459328A patent/ES459328A1/en not_active Expired
- 1977-06-02 BR BR7703572A patent/BR7703572A/en unknown
- 1977-06-02 NL NL7706080A patent/NL7706080A/en not_active Application Discontinuation
- 1977-06-03 BE BE178173A patent/BE855367A/en not_active IP Right Cessation
- 1977-06-03 FR FR7717079A patent/FR2353535A1/en active Granted
- 1977-06-03 CH CH689777A patent/CH626339A5/en not_active IP Right Cessation
- 1977-06-03 DD DD19929277A patent/DD132491A5/en unknown
- 1977-06-03 JP JP6492777A patent/JPS52151186A/en active Pending

Also Published As

Publication number	Publication date
DE2625402A1 (en)	1977-12-22
FR2353535B1 (en)	1982-07-02
JPS52151186A (en)	1977-12-15
FR2353535A1 (en)	1977-12-30
ES459328A1 (en)	1978-03-16
BR7703572A (en)	1978-03-21
GB1535485A (en)	1978-12-13
DD132491A5 (en)	1978-10-04
NL7706080A (en)	1977-12-07
CH626339A5 (en)	1981-11-13

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Legal Events

Date

Code

Title

Description

1984-12-31

RE

Patent lapsed

Owner name: BAYER A.G.

Effective date: 19840603