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US 5,028,729 AGranted
Process for the production of bis-(dialkoxythio-phosphoryl)-trisulfides
AssigneeBayer Aktiengesellschaft
InventorsRudiger Schubart, Hans-Wilhelm Engels
Life of this patent
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Abstract
The elminination of sulfur from bis-(dialkoxythiophosphoryl)-tetrasulfides to bis-(dialkoxythiophosphoryl)-trisulfides on certain silicate fillers, carbon black and aluminium oxide is quantitative.
Claims9
A process for the production of bis-(di-C.sub.1-6 -alkoxythiophosphoryl)-trisulfides from bis-(di-C.sub.1-6 -alkoxythiophosphoryl)-tetrasulfides by elimination of sulfur on sodium aluminium silicate or on a filler selected from the group consisting of silicates, carbon black and aluminium oxide which fillers have been treated with alkali or on a earth alkali hydroxide.
Dependencies are inferred from the claim text.