FR2193805B1 - - Google Patents

Info

Publication number
FR2193805B1
FR2193805B1 FR7327089A FR7327089A FR2193805B1 FR 2193805 B1 FR2193805 B1 FR 2193805B1 FR 7327089 A FR7327089 A FR 7327089A FR 7327089 A FR7327089 A FR 7327089A FR 2193805 B1 FR2193805 B1 FR 2193805B1
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.)
Expired
Application number
FR7327089A
Other languages
French (fr)
Other versions
FR2193805A1 (en
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.)
Union Rheinische Braunkohlen Kraftstoff AG
Original Assignee
Union Rheinische Braunkohlen Kraftstoff 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 Union Rheinische Braunkohlen Kraftstoff AG filed Critical Union Rheinische Braunkohlen Kraftstoff AG
Publication of FR2193805A1 publication Critical patent/FR2193805A1/fr
Application granted granted Critical
Publication of FR2193805B1 publication Critical patent/FR2193805B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/74—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • C07C37/80—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation by extractive distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FR7327089A 1972-07-24 1973-07-24 Distillative prodn of pure hydroquinone - avoiding crystallisation of prod on cool surfaces which clogs equipment Granted FR2193805A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722236304 DE2236304A1 (de) 1972-07-24 1972-07-24 Verfahren zur gewinnung von reinem hydrochinon

Publications (2)

Publication Number Publication Date
FR2193805A1 FR2193805A1 (en) 1974-02-22
FR2193805B1 true FR2193805B1 (enExample) 1977-05-13

Family

ID=5851537

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7327089A Granted FR2193805A1 (en) 1972-07-24 1973-07-24 Distillative prodn of pure hydroquinone - avoiding crystallisation of prod on cool surfaces which clogs equipment

Country Status (2)

Country Link
DE (1) DE2236304A1 (enExample)
FR (1) FR2193805A1 (enExample)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1912628A (en) * 1931-09-04 1933-06-06 Dow Chemical Co Purification of dihydric phenols

Also Published As

Publication number Publication date
DE2236304A1 (de) 1974-02-14
FR2193805A1 (en) 1974-02-22

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Legal Events

Date Code Title Description
ST Notification of lapse