Back to results
US 5,482,638 AGranted
Metal-free dithiophosphoric acid derivatives
AssigneeRhein Chemie Rheinau GmbH
InventorsThomas Dimmig, Gunter Jager, Thomas Petri
Life of this patent
Estimating the term…
Abstract
Addition products of monoepoxides or diepoxides of mono- or polyunsaturated monocyclic or bicyclic hydrocarbons and dithiophosphoric acids, a process for the production of the adducts from the corresponding dithiophosphoric acids and epoxides and the use of the addition products as lubricant additives in lubricants based on mineral oils or native oils.
Claims7
Metal-free dithiophosphoric acid derivatives, obtained by reaction of dialkyl, diaryl or mixed alkyl/aryl dithiophosphoric acids with dicyclopentadiene diepoxide.
Dependencies are inferred from the claim text.