Dithiophosphoric acid polysulfide mixtures, useful as sulfur source in the vulcanization of rubber, are prepared by heating the corresponding disulfide with sulfur in the presence of a solvent

Dithiophosphoric acid polysulfide mixtures, useful as sulfur source in the vulcanization of rubber, are prepared by heating the corresponding disulfide with sulfur in the presence of a solvent

Stable dithiophosphoric acid polysulfide mixtures of formula (I) are prepared by heating the corresponding disulfide compounds (II) with sulfur optionally in the presence of a solvent. Process for preparing dithiophosphoric acid polysulfide mixtures of formula (I): R - R (same or different) = straig...

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Bibliographische Detailangaben
Hauptverfasser: PAULI, ALFRED, FRUEH, THOMAS, HEGMANN, JOACHIM, SCHUDOK, CLEMENS, HEILIGER, LUDGER
Format: Patent
Sprache:eng ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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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Zusammenfassung:Stable dithiophosphoric acid polysulfide mixtures of formula (I) are prepared by heating the corresponding disulfide compounds (II) with sulfur optionally in the presence of a solvent. Process for preparing dithiophosphoric acid polysulfide mixtures of formula (I): R - R (same or different) = straight or branched 1-18 C alkyl, 1-18 C alkenyl, 5-28 C cycloalkyl, 5-28 C cycloalkenyl, 6-28 C aryl or 7-28 aralkyl n = 2.5-3.5 are prepared by heating the dithiophosphoric acid disulfide compound (II): in which R -R are as above, with 0.5-1.5 mol sulfur at temperatures of 100-140 deg C, optionally in the presence of a solvent. Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von Dithiophosphorsäurepolysulfid-Gemischen, das dadurch gekennzeichnet ist, daß man Dithiophosphorsäuredisulfide mit Schwefel bei erhöhten Temperaturen umsetzt. Die nach dem erfindungsgemäßen Verfahren hergestellten Dithiophosphorsäurepolysulfid-Gemische finden Verwendung als Schwefelspender für die Vulkanisation von Natur- und Synthesekautschuken sowie in der Latex-Vulkanisation von Natur- und Synthesekautschuk-Latex.