Patent ID: 6103675
Filing Date: 2000-08-15
Classification: C10M,C10N

Abstract:
A method of using mixtures of two or more phosphoric esters of formula (I) with one or more amines of formula (II) comprising adding the mixtures as extreme pressure additives in water-immiscible cooling lubricants ##STR3## wherein R.sub.1 of a first compound is a hydrogen atom or an isotridecyl group andR.sub.2 is an isotridecyl group andR.sub.1 of a second compound is a hydrogen atom, a butyl group or an ethylene glycol group andR.sub.2 is a butyl group or an ethylene glycol group, andin which R.sub.1 is not identical to R.sub.2 at least in one phosphoric ester of the formula (I), andR.sub.3 to R.sub.5, independently of one another, are a hydrogen atom, a C.sub.1 -C.sub.20 -alkyl group, a C.sub.2 -C.sub.20 -alkenyl group, a C.sub.1 -C.sub.20 -hydroxyalkyl group, a C.sub.2 -C.sub.20 -akylamino group or a C.sub.6 -C.sub.10 -aryl group optionally substituted by C.sub.1 -C.sub.5 -alkyl or by C.sub.1 -C.sub.5 -alkanol.