BR8401034A - Processo para a preparacao de pirocatecol e hidroquinona - Google Patents

Processo para a preparacao de pirocatecol e hidroquinona

Info

Publication number
BR8401034A
BR8401034A BR8401034A BR8401034A BR8401034A BR 8401034 A BR8401034 A BR 8401034A BR 8401034 A BR8401034 A BR 8401034A BR 8401034 A BR8401034 A BR 8401034A BR 8401034 A BR8401034 A BR 8401034A
Authority
BR
Brazil
Prior art keywords
catalyst
hydrogen peroxide
water
phenol
azeotrope
Prior art date
Application number
BR8401034A
Other languages
English (en)
Inventor
Karlheinz Drauz
Axel Kleemann
Original Assignee
Degussa
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6193218&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR8401034(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Degussa filed Critical Degussa
Publication of BR8401034A publication Critical patent/BR8401034A/pt

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
    • C07C37/60—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Electroluminescent Light Sources (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
BR8401034A 1983-03-11 1984-03-02 Processo para a preparacao de pirocatecol e hidroquinona BR8401034A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3308737A DE3308737C2 (de) 1983-03-11 1983-03-11 Verfahren zur Herstellung von Brenzcatechin und Hydrochinon

Publications (1)

Publication Number Publication Date
BR8401034A true BR8401034A (pt) 1984-10-16

Family

ID=6193218

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8401034A BR8401034A (pt) 1983-03-11 1984-03-02 Processo para a preparacao de pirocatecol e hidroquinona

Country Status (9)

Country Link
US (1) US4618730A (pt)
EP (1) EP0121672B1 (pt)
JP (1) JPS59170025A (pt)
AT (1) ATE23521T1 (pt)
BR (1) BR8401034A (pt)
CA (1) CA1201450A (pt)
DE (2) DE3308737C2 (pt)
FI (1) FI840688A (pt)
IL (1) IL71075A (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3308763C2 (de) * 1983-03-11 1985-01-24 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von Dihydroxybenzolen
DE3308769C2 (de) * 1983-03-11 1985-01-24 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von Dihydroxybenzolen
DE3334854A1 (de) * 1983-09-27 1985-04-11 Degussa Ag, 6000 Frankfurt Verfahren zur herstellung nichtwaessriger wasserstoffperoxidloesungen und deren verwendung
DE3602180A1 (de) * 1986-01-25 1987-07-30 Degussa Verfahren zur herstellung von brenzkatechin und hydrochinon
DE3643206C1 (de) * 1986-12-18 1988-03-24 Degussa Verfahren zur Herstellung von substituierten Dihydroxybenzolen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2041124A1 (de) * 1970-08-19 1972-02-24 Degussa Verfahren zur Herstellung organischer Wasserstoffperoxidloesungen
FR2201279B1 (pt) * 1972-09-28 1975-03-14 Rhone Poulenc Ind
DE2410742C3 (de) * 1974-03-06 1981-01-08 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von Brenzkatechin und Hydrochinon durch Kernhydroxylierung von Phenol
DE3225307A1 (de) * 1982-07-07 1984-01-12 Degussa Ag, 6000 Frankfurt Verfahren zur herstellung wasserfreier, organischer wasserstoffperoxidloesungen
DE3308726C2 (de) * 1983-03-11 1991-01-24 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von Dihydroxybenzolen
DE3308769C2 (de) * 1983-03-11 1985-01-24 Degussa Ag, 6000 Frankfurt Verfahren zur Herstellung von Dihydroxybenzolen

Also Published As

Publication number Publication date
CA1201450A (en) 1986-03-04
FI840688A0 (fi) 1984-02-20
IL71075A0 (en) 1984-05-31
ATE23521T1 (de) 1986-11-15
EP0121672A1 (de) 1984-10-17
DE3308737A1 (de) 1984-09-13
JPS59170025A (ja) 1984-09-26
IL71075A (en) 1987-07-31
US4618730A (en) 1986-10-21
EP0121672B1 (de) 1986-11-12
FI840688A (fi) 1984-09-12
DE3461278D1 (en) 1987-01-02
DE3308737C2 (de) 1985-01-24

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