use of essentially completely hydrogenated dimer of amp; alpha; - methylstyrols as a basic material in a fluid for the power transmission in mechanical devices

摘要

1357406 Hydraulic fluids MONSANTO CO 22 Sept 1971 [24 Sept 1970 26 Oct 1970] 44100/71 Heading C5F Hydraulic fluids comprise hydrogenated linear alpha-alkylstyrene dimers of formula where R is C 1 -C 4 alkyl and n is 0, 1 or 2, optionally with up to 20 wt. per cent of cyclic dimers of formula The composition may also contain up to 50 wt. per cent of other synthetic base stocks (examples of cyclic hydrocarbons are given) and minor amounts of conventional additives, e.g. polymethacrylates, polyalkylstyrenes, vinyl acetate/ alkyl fumarate copolymers, methacrylate/vinyl pyrrolidone copolymers, 2,6-di-t-butyl-p-cresol, phenyl-alpha-naphthylamine, and dilauryl selenide. Reference has been directed by the Comptroller to Specification 1,257,473.