IL63611A0 - Process for the preparation of pyrocatechol and hydroquinone - Google Patents

Process for the preparation of pyrocatechol and hydroquinone

Info

Publication number
IL63611A0
IL63611A0 IL63611A IL6361181A IL63611A0 IL 63611 A0 IL63611 A0 IL 63611A0 IL 63611 A IL63611 A IL 63611A IL 6361181 A IL6361181 A IL 6361181A IL 63611 A0 IL63611 A0 IL 63611A0
Authority
IL
Israel
Prior art keywords
phenol
carboxylic acid
hydroquinone
rectification column
pyrocatechol
Prior art date
Application number
IL63611A
Other languages
English (en)
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.)
Filing date
Publication date
Application filed by Bayer Ag filed Critical Bayer Ag
Publication of IL63611A0 publication Critical patent/IL63611A0/xx

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
    • 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
    • C07C37/60—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by oxidation reactions introducing directly hydroxy groups on a =CH-group belonging to a six-membered aromatic ring with the aid of other oxidants than molecular oxygen or their mixtures with molecular oxygen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
IL63611A 1980-08-22 1981-08-19 Process for the preparation of pyrocatechol and hydroquinone IL63611A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19803031736 DE3031736A1 (de) 1980-08-22 1980-08-22 Verfahren zur herstellung von brenzkatechin und hydrochinon

Publications (1)

Publication Number Publication Date
IL63611A0 true IL63611A0 (en) 1981-11-30

Family

ID=6110211

Family Applications (1)

Application Number Title Priority Date Filing Date
IL63611A IL63611A0 (en) 1980-08-22 1981-08-19 Process for the preparation of pyrocatechol and hydroquinone

Country Status (7)

Country Link
US (1) US4362604A (fr)
EP (1) EP0046534B1 (fr)
JP (1) JPS5770830A (fr)
AT (1) ATE8383T1 (fr)
CA (1) CA1173780A (fr)
DE (2) DE3031736A1 (fr)
IL (1) IL63611A0 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3632075A1 (de) * 1986-09-20 1988-03-24 Degussa Verfahren zur herstellung von trihydroxy- bzw. alkoxyhydroxybenzolen
US5393305A (en) * 1993-08-26 1995-02-28 Bristol-Myers Squibb Company Two-part aqueous composition for coloring hair, which forms a gel on mixing of the two parts
JP4161470B2 (ja) * 1999-05-25 2008-10-08 宇部興産株式会社 高純度二価フェノール及びその製造法
FR2903097B1 (fr) * 2006-06-29 2012-10-19 Rhodia Recherches & Tech Procede de preparation d'hydroquinone purifiee et mise en forme
FR2903100B1 (fr) * 2006-06-29 2012-08-03 Rhodia Recherches & Tech Procede de preparation d'hydroquinone purifiee
FR2903099B1 (fr) * 2006-06-29 2012-08-03 Rhodia Recherches & Tech Procede de separation et de purification d'hydroquinone a partir de melanges bruts
CN108147949B (zh) * 2016-12-06 2021-03-26 嘉兴市中华化工有限责任公司 一种苯二酚反应液的分离方法
CN115433061B (zh) * 2022-09-13 2024-05-14 上海霍卫工艺设备有限公司 一种高浓度苯酚废水的分离方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1518317A1 (de) * 1965-07-13 1969-11-27 Somerville Robert L Verfahren zur Gewinnung von Phenolen aus Koksofengas
DE2150657C3 (de) * 1971-07-17 1978-10-26 Brichima S.P.A., Mailand (Italien) Verfahren zur Herstellung einer Mischung aus Brenzcatechin und Hydrochinon
JPS5833207B2 (ja) * 1975-08-28 1983-07-18 工業技術院長 ニカフエノ−ルノセイゾウホウホウ
DE2658943C3 (de) * 1976-12-24 1982-02-18 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von Brenzkatechin und Hydrochinon
DE2928553A1 (de) * 1979-07-14 1981-01-29 Bayer Ag Verfahren zur gewinnung von brenzkatechin und hydrochinon

Also Published As

Publication number Publication date
CA1173780A (fr) 1984-09-04
DE3031736A1 (de) 1982-04-01
JPS5770830A (en) 1982-05-01
EP0046534A1 (fr) 1982-03-03
EP0046534B1 (fr) 1984-07-11
ATE8383T1 (de) 1984-07-15
US4362604A (en) 1982-12-07
DE3164721D1 (en) 1984-08-16

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