Aqueous lubricant composition

An aqueous lubricant composition consisting essentially of

• (A) from 0.1 to 30 wt.% of a compound of the formula:
• R.sup.1 Y[(C.sub.p H.sub.2p O).sub.a (C.sub.2 H.sub.4 O).sub.b (C.sub.q H.sub.2q O).sub.c H].sub.m (I)
• wherein R.sup.1 is a hydrocarbon group having 5 to 26 carbon atoms, Y is an oxygen atom or a nitrogen atom, p and q are each 3 or 4, a.gtoreq.0, b.gtoreq.2 and c.gtoreq.0, with the provisos that the sum of a+b+c is in the range of 2 to 200 and the ratio (a+c)/b is in the range of 0 to 7/3, m is 1 when Y is an oxygen atom and m is 2 when Y is a nitrogen atom, each of the groups --(C.sub.p H.sub.2p O).sub.a --, --C.sub.2 H.sub.4 O).sub.b -- and --(C.sub.q H.sub.2q O).sub.c -- being present as block segments;
• (B) from 0.1 to 30 wt.% of a compound of the formula:
• R.sup.2 [Y[{(C.sub.2 H.sub.4 O).sub.d (C.sub.p H.sub.2p O).sub.e }(C.sub.q H.sub.2q O).sub.f H].sub.m ].sub.n (II)
• wherein R.sub.2 is a residue of a polyhydric alcohol, a polyhydric phenol, or a polyamine each having 2 to 26 carbon atoms, Y, p and q and m have the same meanings as defined above, d>0, e.gtoreq.0 and f>0, n is an integer of from 2 to 8, with the provisos that the sum of d+e+f is in the range of 10 to 3,000, the ratio e/d is in the range of 0 to 1, the ratio f/(d+e) is in the range of 1/9 to 0.8, the segment {(C.sub.2 H.sub.4 O).sub.d (C.sub.p H.sub.2p O).sub.e } in said formula (II) represents a chain formed by random addition when e is greater than 0, the segment [{(C.sub.2 H.sub.4 O).sub.d (C.sub.p H.sub.2p).sub.e }(C.sub.q H.sub.2q O).sub.f H] is in the form of addition blocks in the sequence given in said formula (II) and the content of C.sub.3-4 oxyalkylene blocks is not higher than 49.6% by weight;
• (C) 0.1 to 20 wt.% of a compound of the formula:
• ##STR14## wherein R.sup.3 is a hydrocarbon group obtained when a mono- or polycarboxylic acid having 8 to 54 carbon atoms is reacted with an alkanolamine or an alkylalkanolamine to form the formula III compound, R.sup.4 is a hydrogen atom, a hydrocarbon group having 1 to 26 carbon atoms, or a group of the formula --(C.sub.s H.sub.2s O)h.sub.H, t is an integer of from 1 to 5, r and s are each 2 or 3, and g and h are each a number in the range of 1 to 20;
• and
• (D) 20 to 99.7 wt.% of water.