JPS543084A - Purification of lactam - Google Patents

Purification of lactam

Info

Publication number
JPS543084A
JPS543084A JP6763677A JP6763677A JPS543084A JP S543084 A JPS543084 A JP S543084A JP 6763677 A JP6763677 A JP 6763677A JP 6763677 A JP6763677 A JP 6763677A JP S543084 A JPS543084 A JP S543084A
Authority
JP
Japan
Prior art keywords
lactam
purification
polycapramide
distillation
exchange resin
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.)
Granted
Application number
JP6763677A
Other languages
Japanese (ja)
Other versions
JPS6021143B2 (en
Inventor
Takahito Masai
Toshifumi Onishi
Yukihiro Tonomura
Satoru Mitamura
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.)
Toyobo Co Ltd
Original Assignee
Toyobo Co Ltd
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 Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to JP6763677A priority Critical patent/JPS6021143B2/en
Publication of JPS543084A publication Critical patent/JPS543084A/en
Publication of JPS6021143B2 publication Critical patent/JPS6021143B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Polyamides (AREA)
  • Pyrrole Compounds (AREA)

Abstract

PURPOSE: To purify crude lactam obtained by the thermal depolymerization of polycapramide by the successive treatments comprising cation exchange resin treatment, ozone oxidation, and distillation.
COPYRIGHT: (C)1979,JPO&Japio
JP6763677A 1977-06-07 1977-06-07 Lactam purification method Expired JPS6021143B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6763677A JPS6021143B2 (en) 1977-06-07 1977-06-07 Lactam purification method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6763677A JPS6021143B2 (en) 1977-06-07 1977-06-07 Lactam purification method

Publications (2)

Publication Number Publication Date
JPS543084A true JPS543084A (en) 1979-01-11
JPS6021143B2 JPS6021143B2 (en) 1985-05-25

Family

ID=13350668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6763677A Expired JPS6021143B2 (en) 1977-06-07 1977-06-07 Lactam purification method

Country Status (1)

Country Link
JP (1) JPS6021143B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5379122A (en) * 1976-12-23 1978-07-13 Yamada Kikai Kogyo Kk Throttle lever device of powered mower and others
JPH09163849A (en) * 1995-12-19 1997-06-24 Gifu Pref Gov Bush slasher

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5379122A (en) * 1976-12-23 1978-07-13 Yamada Kikai Kogyo Kk Throttle lever device of powered mower and others
JPS567500B2 (en) * 1976-12-23 1981-02-18
JPH09163849A (en) * 1995-12-19 1997-06-24 Gifu Pref Gov Bush slasher

Also Published As

Publication number Publication date
JPS6021143B2 (en) 1985-05-25

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