CA999252A - Purification of 2-pyrrolidone - Google Patents

Purification of 2-pyrrolidone

Info

Publication number
CA999252A
CA999252A CA161,972A CA161972A CA999252A CA 999252 A CA999252 A CA 999252A CA 161972 A CA161972 A CA 161972A CA 999252 A CA999252 A CA 999252A
Authority
CA
Canada
Prior art keywords
pyrrolidone
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
CA161,972A
Other languages
English (en)
Other versions
CA161972S (en
Inventor
Stephen F. Pusztaszeri
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA999252A publication Critical patent/CA999252A/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)
  • Pyrrole Compounds (AREA)
CA161,972A 1972-02-07 1973-01-24 Purification of 2-pyrrolidone Expired CA999252A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CA999252A true CA999252A (en) 1976-11-02

Family

ID=22839968

Family Applications (1)

Application Number Title Priority Date Filing Date
CA161,972A Expired CA999252A (en) 1972-02-07 1973-01-24 Purification of 2-pyrrolidone

Country Status (6)

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

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
IT977223B (it) 1974-09-10
JPS5212711B2 (fr) 1977-04-08
NL7301652A (fr) 1973-08-09
FR2171258B1 (fr) 1980-08-08
DE2305921B2 (de) 1975-10-23
GB1398501A (en) 1975-06-25
DE2305921A1 (de) 1973-08-16
JPS4891062A (fr) 1973-11-27
FR2171258A1 (fr) 1973-09-21

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