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OwnerWolfram Spiess, Friedrich Franke +4inventors
InventorsWolfram Spiess, Friedrich Franke, Rolf Himmelreich, deceased, by Margot M. C. Himmelreich, executor, by Petra Himmelreich, heir, by Ralf Himmelreich, heir
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Novel tungsten hexa(dialkyldithiocarbamates) of the general formula I ##STR1## in which R and R.sup.1 can be identical or different, branched or straight-chain, saturated or unsaturated alkyl radicals having 1-18 carbon atoms are prepared by a process in which 6 mols of an alkali metal dialkyldithiocarbamate of the general formula II ##STR2## in which R and R.sup.1 are as signified above and Me can be sodium, potassium or ammonium, are reacted with 1 mol of tungsten hexachloride in a solvent which is inert with respect to the reaction. The alkali metal chloride or ammonium chloride formed is separated off and the tungsten hexa(dialkyldithiocarbamate) is isolated. The tungsten hexa(dialkyldithiocarbamates) of the invention can be used as additives for prolonging the life of hydraulic oils or permanent gear lubrication oils.
A tungsten hexa(dialkyldithiocarbamate) of the formula I ##STR9## wherein R and R.sup.1 may be identical or different and are selected from the group consisting of branched or straight-chain, saturated or unsaturated alkyl radicals having 1-18 carbon atoms.
Tungsten hexa(diamyldithiocarbamate).
Tungsten hexa(di-2-ethylhexyldithiocarbamate).
A tungsten hexa(dialkyldithiocarbamate) of the formula I ##STR11## wherein R and R.sup.1 may be identical or different and are selected from the group consisting of straight-chain, saturated or unsaturated alkyl radicals having 1-18 carbon atoms.
Dependencies are inferred from the claim text.