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US 2011/0218130 A1Published application
Salts of thiophosphoric acids and use thereof in lubricants
AssigneesBASF SE, ILCO Chemikalien GmbH
InventorsLaszlo SZARVAS, Dirk GERHARD, Matthias VOLKHOLZ, Corvin VOLKHOLZ
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Abstract
Salts of the anion of di-, tri- or tetrathiophosphoric acid of the formula I in which Z1 and Z2 are each independently an oxygen or sulfur atom, and Ra and Rb are each independently an organic group having 1 to 20 carbon atoms, and a cation which comprises a heterocyclic ring system having one to three nitrogen atoms.
Claims18
A salt of the anion of di-, tri- or tetrathiophosphoric acid of the formula I
- in which Z1 and Z2 are each independently an oxygen or sulfur atom, and Ra and Rb are each independently an organic group having 1 to 20 carbon atoms,
- and a cation which comprises a heterocyclic ring system having one to three nitrogen atoms.
A di-, tri- or tetrathiophosphoric acid of the formula VII
- in which Z1 and Z2 are each independently an oxygen or sulfur atom, the Ra radical is a 2-propylheptyl group and Rb radical is an organic group having 1 to 20 carbon atoms.
Dependencies are inferred from the claim text.