FORFARANDE FOR FRAMSTELLNING AV STERISKT HINDRADE BIS- ELLER POLYFENOLER

Sterically hindered bisphenols or polyphenols of the general formula wherein the substituents are defined in Claim 1, are obtained by reacting sterically hindered 2,4,6-trialkylphenols with acetals or with aldehydes or with cyclic or linear polymers of these aldehydes at a temperature of 60 to 200 D...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	8)V K GUSEV, 4)O F STARIKOVA, 5)G I RUTMAN, 6)J I MICHUROV, 1)E L STYSKIN, 9)A G LIAKUMOVICH, 2)Y A GURVICH, 3)S T KUMOK, 7)V A YANSHEVSKY
Format:	Patent
Sprache:	swe
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL METHODS OF ORGANIC CHEMISTRY METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	Sterically hindered bisphenols or polyphenols of the general formula wherein the substituents are defined in Claim 1, are obtained by reacting sterically hindered 2,4,6-trialkylphenols with acetals or with aldehydes or with cyclic or linear polymers of these aldehydes at a temperature of 60 to 200 DEG C in the presence of an acid catatlyst. The sterically hindered bisphenols or polyphenols may be used, for example, as effective, non-staining, non-toxic and low-volatility stabilisers for natural and synthetic rubbers, plastics and other organic products.