FR2171258A1 - - Google Patents

Info

Publication number
FR2171258A1
FR2171258A1 FR7304340A FR7304340A FR2171258A1 FR 2171258 A1 FR2171258 A1 FR 2171258A1 FR 7304340 A FR7304340 A FR 7304340A FR 7304340 A FR7304340 A FR 7304340A FR 2171258 A1 FR2171258 A1 FR 2171258A1
Authority
FR
France
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
FR7304340A
Other languages
French (fr)
Other versions
FR2171258B1 (xx
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.)
PUSZTASZERI STEPHEN
Original Assignee
PUSZTASZERI STEPHEN
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 PUSZTASZERI STEPHEN filed Critical PUSZTASZERI STEPHEN
Publication of FR2171258A1 publication Critical patent/FR2171258A1/fr
Application granted granted Critical
Publication of FR2171258B1 publication Critical patent/FR2171258B1/fr
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
FR7304340A 1972-02-07 1973-02-07 Expired FR2171258B1 (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22427472A 1972-02-07 1972-02-07

Publications (2)

Publication Number Publication Date
FR2171258A1 true FR2171258A1 (xx) 1973-09-21
FR2171258B1 FR2171258B1 (xx) 1980-08-08

Family

ID=22839968

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7304340A Expired FR2171258B1 (xx) 1972-02-07 1973-02-07

Country Status (6)

Country Link
JP (1) JPS5212711B2 (xx)
CA (1) CA999252A (xx)
FR (1) FR2171258B1 (xx)
GB (1) GB1398501A (xx)
IT (1) IT977223B (xx)
NL (1) NL7301652A (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276215A (en) * 1977-07-25 1981-06-30 Gaf Corporation Purification of pyrrolidone

Also Published As

Publication number Publication date
GB1398501A (en) 1975-06-25
FR2171258B1 (xx) 1980-08-08
IT977223B (it) 1974-09-10
DE2305921A1 (de) 1973-08-16
JPS4891062A (xx) 1973-11-27
CA999252A (en) 1976-11-02
DE2305921B2 (de) 1975-10-23
NL7301652A (xx) 1973-08-09
JPS5212711B2 (xx) 1977-04-08

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Legal Events

Date Code Title Description
ST Notification of lapse