GB919428A - Process for decolorising and/or stabilizing against discoloration aromatic compounds - Google Patents
Process for decolorising and/or stabilizing against discoloration aromatic compoundsInfo
- 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
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
- C07C37/86—Purification; 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.
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)
| 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 |
-
1961
- 1961-09-18 GB GB3340061A patent/GB919428A/en not_active Expired
Cited By (5)
| 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 |
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