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ALKYLOXY ALKYLAMINO PROPANOLS AS MULTIFUNCTIONAL FUEL STABILIZERS

Nine different derivatives of alkyloxy alkylamino propanols were synthesised from epichlorohydrin, straight or branched chain primary and secondary alcohols and tertiary alkyl primary amines as well as straight chain primary amine. Their sedimentation inhibition characteristics in distillate fuels of various compositions were studied in comparison to tertiary alkyl primary amines as well as some known commercial additives of similar nature. It is inferred that the replacement of hydrogen in tertiary alkyl primary amines with a long chain hydroxy ether greatly improves the sediment inhibiting properties of tertiary alkyl primary amines, which were otherwise not found very effective in the fuels employed for present studies. Moreover it has been concluded that among these derivatives tertiary-dodecyl appears to be most optimum chain length for the amine moeity and eight C-atoms in the alkyl chain backbone of alcohol moiety is the most optimum for effective inhibition. Sedimentation values have been reduced from 10 mg/100 ml to 2.89 mg/100 ml for 3(3,7 dimethyl octyloxy)-1(t-dodecylamino)-Propan-2-ol employed as inhibitor.