DE818579C - Process for the preparation of phenol-aldehyde condensation products - Google Patents
Process for the preparation of phenol-aldehyde condensation productsInfo
- Publication number
- DE818579C DE818579C DEP3959A DEP0003959A DE818579C DE 818579 C DE818579 C DE 818579C DE P3959 A DEP3959 A DE P3959A DE P0003959 A DEP0003959 A DE P0003959A DE 818579 C DE818579 C DE 818579C
- Authority
- DE
- Germany
- Prior art keywords
- phenol
- preparation
- condensation products
- nonaldehyde
- aldehyde condensation
- 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
- C07C37/11—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms
- C07C37/20—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using aldehydes or ketones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Verfahren zur Herstellung von Phenol-Aldehyd-Kondensationsprodukten Die Erfindung bezieht sich auf die Herstellung von neuen chemischen Verbindungen, nämlich i - t-1>is-(2'-Hydroxy-3" 5'-dialkylphenyl)-nonanen, in denen die Alkvlradikale nicht mehr als zwei Kohlenstoffatome 'besitzen. Diese neuen chemischen Verbindungen sind wertvolle Antioxydationsmittel für natürliche und synthetische Kautschukarten.Process for the preparation of phenol-aldehyde condensation products The invention relates to the production of new chemical compounds, namely i - t-1> is- (2'-Hydroxy-3 "5'-dialkylphenyl) -nonanes, in which the alkyl radicals have no more than two carbon atoms. These new chemical compounds are valuable antioxidants for natural and synthetic rubbers.
Diese Verbindungen werden dadurch hergestellt, daß ein Nonaldehyd mit einem 2 - 4-Dialkylphenol, in dem die Alkylgruppennicht mehr als zwei Kohlenstoffatome aufweisen, in Gegenwart eines sauren Kondensationsmittels, beispielsweise Salzsäure oder Schwefelsäure, kondensiert werden.These compounds are produced in that a nonaldehyde with a 2-4 dialkylphenol in which the alkyl groups have no more than two carbon atoms have, in the presence of an acidic condensing agent, for example hydrochloric acid or sulfuric acid.
Die 2 - 4-Dialkylphenole, welche angewandt werden können, bestehen aus 2 - 4-Dimethylphenol, 2 - Methyl -.4 - äthylphenol, 2 -Äthyl - 4 - methylphenol und 2 - 4-Diäthylphenol. Von diesen genannten Stoffen werden zweckmäßig die beiden erstgenannten verwendet, da sie technisch leicht verfügbar sind.The 2-4 dialkylphenols that can be used exist from 2 - 4-dimethylphenol, 2 - methyl -.4 - ethylphenol, 2 -ethyl - 4 - methylphenol and 2-4 diethylphenol. Of these substances mentioned, the two are expedient The former are used because they are readily available technically.
Wenn diese Verbindungen als Antioxydationsmittel für natürliche und synthetische Kautschukarten verwendet werden, ergeben sie Vulkanisate, die nur wenig, wenn überhaupt eine Verfärbung zeigen und die eine gute Widerstandsfähigkeit gegenüber den üblichen Alterungseinwirkungen aufweisen. In der Tat sind die vereinigten verfärbungsfreien und Antioxydationseigenschaften dieser Produkte unübertroffen.When these compounds are used as antioxidants for natural and synthetic rubbers are used, they result in vulcanizates, which only have little, if any discoloration show and which have good resilience exhibit against the usual aging effects. Indeed, they are united discoloration-free and antioxidant properties of these products are unmatched.
In den folgenden Beispielen sind einige Ausführungsformen der Erfindung angegeben, worauf diese jedoch nicht beschränkt ist. Die Teile sind Gewichtsteile.The following examples are some embodiments of the invention indicated, but this is not limited to this. The parts are parts by weight.
Beispiel i 3o Teile 2 4-Dimethylphenol werden 8 Stunden lang mit 19 Teilen eines Nonaldehyds, nämlich 3 ' 5 ' 5-Trimethylhexanal-i, CH, . C (C H3) 2 C H2. H C (C H3) - C H2 - C 1-10 (hergestellt duich Umsetzen von Diisobutylen mit Kohlenoxyd und Wasserstoff), und 2,5 Teilen 35%iger Salzsäure erwärmt. Verunreinigungen werden durch Dampfdestillation entfernt, und der Rückstand wird aus Benzol auskristallisiert: Das aus 2 - 2 - 4-Trimethyl-6 - 6-bis-(2'-oxy-3' # 5'-dimethylphenyl)-hexan bestehende Produkt wird in Form von farblosen Kristallen erhalten, die einen Schmelzpunkt von 169 bis 17o° besitzen. Die Destillation des benzollöslichen Anteils ergibt ein zweites Produkt in Form eines sehr viskosen gelben Öles mit einem Siedepunkt von 190 bis 204° bei o,1 mm Druck.Example i 3o parts of 2 4-dimethylphenol are mixed with 19 parts of a nonaldehyde, namely 3 '5' 5-trimethylhexanal-i, CH,. C (C H3) 2 C H2. HC (C H3) - C H2 - C 1-10 (produced by reacting diisobutylene with carbon oxide and hydrogen), and 2.5 parts of 35% hydrochloric acid are heated. Impurities are removed by steam distillation and the residue is crystallized from benzene: The product consisting of 2 - 2 - 4-trimethyl-6 - 6-bis- (2'-oxy-3 '# 5'-dimethylphenyl) -hexane is dissolved in Obtained in the form of colorless crystals which have a melting point of 169 to 17o °. The distillation of the benzene-soluble fraction gives a second product in the form of a very viscous yellow oil with a boiling point of 190 to 204 ° at 0.1 mm pressure.
Unter Anwendung der üblichen Mischverfahren wurden vulkanisierbare
Kautschukmassen folgender Zusammenset iung hergestellt: -
Um die verfärbungsfreien Eigenschaften dieser neuen Antioxydationsmittel
zu zeigen, wurden die oben angegebenen Vulkanisate 24 Stunden dem ultravioletten
Licht ausgesetzt und dabei folgende Ergebnisse erzielt:- -
C27H4,02 ergibt errechnet 8i,9 % C und i o, i % H, Unter Anwendung der üblichen Mischverfahren durch Analyse gefunden: 82,2% C und io,4%H.C27H4.02 gives calculated 8i, 9% C and i o, i% H, using of the usual mixing methods found by analysis: 82.2% C and io.4% H.
wurden vulkanisierbare Kautschukmassen folgender Zusammensetzung hergestellt:
Claims (3)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB818579X | 1948-09-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE818579C true DE818579C (en) | 1951-10-25 |
Family
ID=10527275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP3959A Expired DE818579C (en) | 1948-09-22 | 1949-08-25 | Process for the preparation of phenol-aldehyde condensation products |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE818579C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1054231B (en) * | 1951-07-16 | 1959-04-02 | Ici Ltd | Stabilizing natural and synthetic rubber |
DE1493867B1 (en) * | 1964-02-05 | 1969-12-04 | Ici Ltd | Process for the production of bis-1,1- (2'-hydroxy-3 ', 5'-dimethyl-phenyl) -alkanes from a reaction mixture |
-
1949
- 1949-08-25 DE DEP3959A patent/DE818579C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1054231B (en) * | 1951-07-16 | 1959-04-02 | Ici Ltd | Stabilizing natural and synthetic rubber |
DE1493867B1 (en) * | 1964-02-05 | 1969-12-04 | Ici Ltd | Process for the production of bis-1,1- (2'-hydroxy-3 ', 5'-dimethyl-phenyl) -alkanes from a reaction mixture |
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