LUBRICATING COMPOSITIONS

A concentrate which upon dilution with water forms a lubricant composition for use in lubricating conveyor track comprising:- (a) (i) an alkylamine dicarboxylate compound of general formula (I> wherein R1 is a C8 to C18 saturated or unsaturated alkyl group, including mixtures of such alkyl groups, n is an integer of from 1 to 12, and each of M1 and M2 independently represents hydrogen or a Group I metal, and with the proviso that the distribution of alkyl chain lengths of the group R1 is such that components (a) and (b) remain in solution; and/or (ii) a compound of general formula (II> wherein R1 is defined above, R2 represents hydrogen or -(CH2)m-OH wherein m is an integer of from 2 to 12, and each of Y1 and Y2 is independently selected from -CH2OH, -COOM3, and -CH2COOM3, wherein M3 is hydrogen or a Group I metal; (b) a cyclic imidazoline of the general formula (III> wherein R3 is a C7 to C20 saturated or unsaturated alkyl group, and (c) a C12 to C18 saturated or unsaturated alkyl sulphonate anionic surfactant.