GB919428A - Process for decolorising and/or stabilizing against discoloration aromatic compounds - Google Patents

Process for decolorising and/or stabilizing against discoloration aromatic compounds

Info

Publication number
GB919428A
GB919428A GB3340061A GB3340061A GB919428A GB 919428 A GB919428 A GB 919428A GB 3340061 A GB3340061 A GB 3340061A GB 3340061 A GB3340061 A GB 3340061A GB 919428 A GB919428 A GB 919428A
Authority
GB
United Kingdom
Prior art keywords
tert
butyl
sec
butylaniline
octylphenol
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
GB3340061A
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Publication of GB919428A publication Critical patent/GB919428A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/86Purification; separation; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Phenols and aromatic amines are stabilized and/or decolorised by contact with a basic aqueous solution containing dithionite ions. Specified compounds are:- b -naphthol, 1phenanthrol, resorcinol, pyrogallol, phenol, o-, m- and p-cresols, the xylenols, o-ethylphenol, p-octylphenol, 2:4:6 - tritert-butylphenol, durenol, 2-methyl-6-isopropylphenol, 2-ethyl-6-tert-butylphenol, 2-hexyl-6-tert-octylphenol, 2-propyl-6-cyclohexylphenol and 2:6di-isopropyl, -sec-butyl, -sec-amyl, -sec-octyl, -tert-butyl, -tert-amyl, -tert-heptyl and -tertoctylphenols; biphenols such as 3,31,5,51-tetratert-butyl biphenol and bis(3,5-di-tert-butyl-4hydroxyl)methane; b -naphthylamine, phenylenediamine, durenediamine, aniline, methyl and dimethyl anilines, 2:6 - diethylaniline, o - tert - butylaniline, 2:4 - ditert-butylaniline, monoaminodurine and p-octylaniline. Zn, Ca, Na and K dithionites are mentioned; basic compounds which may be used include NaOH, KOH, Ca(OH)2, K2CO3 and NaHCO3. The treatment may be combined with an alkylation process in which a phenol or aromatic amine is alkylated, preferably with an olefine containing 2-8 carbon atoms, in the presence of an acidic alkylation catalyst and the product is treated with a solution containing dithionate ions before it is isolated. Specifications 756,538, 798,438 and 843,745 are referred to.
GB3340061A 1960-09-19 1961-09-18 Process for decolorising and/or stabilizing against discoloration aromatic compounds Expired GB919428A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5665860A 1960-09-19 1960-09-19

Publications (1)

Publication Number Publication Date
GB919428A true GB919428A (en) 1963-02-27

Family

ID=22005840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3340061A Expired GB919428A (en) 1960-09-19 1961-09-18 Process for decolorising and/or stabilizing against discoloration aromatic compounds

Country Status (1)

Country Link
GB (1) GB919428A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356330A (en) * 1981-07-20 1982-10-26 Texaco Inc. Method of decolorizing mixtures of T-butyl alkylphenols with N-(2-hydroxyethyl)oxazolidine
WO1996004236A1 (en) * 1994-08-02 1996-02-15 Hoechst Aktiengesellschaft Method for preparing polyhydroxy fatty acid amide solutions of good color quality and their use
CN111792980A (en) * 2020-06-18 2020-10-20 湖南国发精细化工科技有限公司 O-sec-butylphenol containing antitarnish agent

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356330A (en) * 1981-07-20 1982-10-26 Texaco Inc. Method of decolorizing mixtures of T-butyl alkylphenols with N-(2-hydroxyethyl)oxazolidine
WO1996004236A1 (en) * 1994-08-02 1996-02-15 Hoechst Aktiengesellschaft Method for preparing polyhydroxy fatty acid amide solutions of good color quality and their use
US5571934A (en) * 1994-08-02 1996-11-05 Hoechst Ag Process for preparing solutions of polyhydroxy-fatty acid amides having good color quality, and their use
AU689638B2 (en) * 1994-08-02 1998-04-02 Clariant Gmbh Method for preparing polyhydroxy fatty acid amide solutions of good color quality and their use
CN111792980A (en) * 2020-06-18 2020-10-20 湖南国发精细化工科技有限公司 O-sec-butylphenol containing antitarnish agent

Similar Documents

Publication Publication Date Title
GB919428A (en) Process for decolorising and/or stabilizing against discoloration aromatic compounds
GB891561A (en) An improved method of producing phenol having a high degree of purity
ES263521A1 (en) Procedure for the preparation of phenoles (Machine-translation by Google Translate, not legally binding)
ES2037499T3 (en) PROCEDURE FOR THE ISOLATION OF THE BLOOD COAGULATION FACTOR IX.
ES249465A1 (en) Improvements in or relating to the extraction of phenols from solution
GB963294A (en) Process for the production of polyhydric diaryl-alkanes,-cycloalkanes and -aralkanes
GB1102309A (en) Improvements in or relating to the methylation of hydroxy aromatic compounds
GB886603A (en) Compounds produced by alkylation of aromatic compounds with polycyclopentadiene and process therefor
GB992629A (en) Alkyl phenols
GB558987A (en) Improvements relating to processes for the production of oxy-benzyl-mono-alcohols by condensation of phenols with formaldehyde
GB969415A (en) Process for the separation of mixtures containing cresols and xylenols
GB731270A (en) Improvements in or relating to the alkylation of phenols and naphthols
Feigl et al. Spot test detection of phenoxy compounds
ES339765A1 (en) Production of substituted phenols
GB843745A (en) Process for the preparation of 2, 6-dialkyl phenols
GB989376A (en) Process for the production of alkyl phenols
Chen et al. Study on anti-oxidation actity of astaxanthin
GB748287A (en) Phenol production
GB1193526A (en) Coupling of Phenols with Quinol Ethers
GB960004A (en) Process for preventing the formation of insoluble deposits on heating and evaporating crude benzene
GB864763A (en) A process of preparing aromatic diamines
GB851212A (en) Improvements in or relating to the hydrodealkylation of alkylated phenols
ES198156A1 (en) A PROCEDURE FOR THE SEPARATION OF PHENOLS AND LIKE ACID COMBINATIONS FROM THE MIXTURES OF ELEVATED ALCOHOLS AND KETONES CONTAINING THEM
GB1235240A (en) Process for the production of alkyl phenols
GB1024817A (en) Process for preparing an oxygen containing alkylated 5,6,7,8-tetrahydronaphthalene